/* ==========================================================================
   Utility tools — shared shell + unit converter renderer
   استایل مشترک همه ابزارهای ساده client-side (مبدل‌ها، پسوردساز و ...).
   تغییر ظاهر ورودی/دکمه همه این ابزارها فقط از همین فایل انجام می‌شود.
   فقط از design tokens استفاده کنید (tokens/*.css) — hex پراکنده ممنوع.
   Mobile-first: پایه برای موبایل، ارتقا در >= 576px.
   ========================================================================== */

/* --- Shell -------------------------------------------------------------- */

.utility-tool {
    max-width: 960px;
    margin-inline: auto;
    padding-block: var(--space-6, 1.5rem) var(--space-12, 3rem);
}

.utility-tool__header {
    text-align: center;
    margin-block-end: var(--space-6, 1.5rem);
}

.utility-tool__title {
    font-size: clamp(1.4rem, 4.5vw, 2rem);
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-text, #1a1a1a);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
}

.utility-tool__title-icon {
    color: var(--color-primary);
    font-size: 0.9em;
}

.utility-tool__title-image {
    flex: 0 0 auto;
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-md, 0.5rem);
}

.utility-tool__subtitle {
    color: var(--color-text-muted, #6b7280);
    font-size: clamp(0.9rem, 2.8vw, 1rem);
    margin-block: var(--space-2, 0.5rem) 0;
}

/* --- Panel (کارت اصلی ابزار) -------------------------------------------- */

.utility-tool__panel {
    background: var(--color-bg, #fff);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    box-shadow: var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 6%));
    padding: clamp(1rem, 4vw, 1.75rem);
}

/* --- Unit converter form ------------------------------------------------- */

.unit-converter__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4, 1rem);
}

.unit-converter__label {
    display: block;
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium, 500);
    color: var(--color-text-muted, #6b7280);
    margin-block-end: var(--space-1, 0.25rem);
}

.unit-converter__input,
.unit-converter__select {
    width: 100%;
    min-height: 48px; /* لمس راحت موبایل */
    padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
    font-size: 1.05rem;
    font-family: inherit;
    color: var(--color-text, #1a1a1a);
    background: var(--color-bg, #fff);
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    transition: border-color var(--duration-base, 0.15s), box-shadow var(--duration-base, 0.15s);
}

.unit-converter__input:focus,
.unit-converter__select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus, 0 0 0 3px rgb(59 130 246 / 25%));
}

.unit-converter__input[aria-invalid="true"] {
    border-color: var(--color-danger, #dc2626);
}

.unit-converter__units-row {
    display: flex;
    align-items: end;
    gap: var(--space-2, 0.5rem);
}

.unit-converter__unit-field {
    flex: 1 1 0;
    min-width: 0;
}

.unit-converter__swap {
    flex: 0 0 auto;
    min-width: 48px;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg-muted, #f9fafb);
    color: var(--color-primary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: background var(--duration-base, 0.15s);
}

.unit-converter__swap:hover {
    background: var(--color-bg-hover, #f3f4f6);
}

/* --- Actions ------------------------------------------------------------- */

.unit-converter__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2, 0.5rem);
}

.unit-converter__actions .unit-converter__convert,
.unit-converter__actions .unit-converter__reset {
    width: 100%;
    min-height: 48px;
}

@media (min-width: 576px) {
    .unit-converter__actions {
        flex-direction: row;
    }

    .unit-converter__actions .unit-converter__convert {
        flex: 2 1 0;
    }

    .unit-converter__actions .unit-converter__reset {
        flex: 1 1 0;
        width: auto;
    }
}

/* --- Result / error ------------------------------------------------------ */

.unit-converter__result {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    background: var(--color-bg-muted, #f0fdf4);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md, 0.5rem);
}

.unit-converter__result-value {
    font-size: clamp(1.2rem, 5vw, 1.6rem);
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-text, #111827);
    overflow-wrap: anywhere;
}

.unit-converter__result-unit {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.95rem;
}

.unit-converter__copy {
    margin-inline-start: auto;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1, 0.25rem);
    min-height: 40px;
    padding-inline: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #374151);
    font-size: 0.85rem;
    cursor: pointer;
}

.unit-converter__copy.is-copied {
    color: var(--color-success, #16a34a);
    border-color: var(--color-success, #16a34a);
}

.unit-converter__error {
    margin: 0;
    padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-danger-bg, #fef2f2);
    color: var(--color-danger, #dc2626);
    font-size: 0.9rem;
}

.unit-converter__formula {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.85rem;
    text-align: center;
}

/* --- Content blocks (متن ادمین پایین ابزار) ------------------------------ */

.utility-tool__content {
    margin-block-start: var(--space-10, 2.5rem);
}

.utility-tool__content-block + .utility-tool__content-block {
    margin-block-start: var(--space-6, 1.5rem);
}

.utility-tool__content-title {
    font-size: 1.15rem;
    font-weight: var(--font-weight-bold, 700);
    margin-block-end: var(--space-2, 0.5rem);
}

.utility-tool__content :is(p, li) {
    color: var(--color-text-muted, #4b5563);
    line-height: 1.9;
}

/* --- Related tools -------------------------------------------------------- */

.utility-tool__related {
    margin-block-start: var(--space-8, 2rem);
    padding-block-start: var(--space-6, 1.5rem);
    border-block-start: 1px solid var(--color-border, #e5e7eb);
}

.utility-tool__related-title {
    font-size: 1rem;
    font-weight: var(--font-weight-bold, 700);
    margin-block-end: var(--space-3, 0.75rem);
}

.utility-tool__related-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.utility-tool__related-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1, 0.25rem);
    min-height: 40px;
    padding-inline: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-full, 999px);
    color: var(--color-text, #374151);
    text-decoration: none;
    font-size: 0.9rem;
    transition: border-color var(--duration-base, 0.15s), color var(--duration-base, 0.15s);
}

.utility-tool__related-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.utility-tool__related-image {
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    object-fit: contain;
    border-radius: var(--radius-sm, 0.25rem);
}

/* --- Math calculator ----------------------------------------------------- */

.math-calculator__hint {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.9rem;
    margin-block: 0 var(--space-4, 1rem);
}

.math-calculator__fields {
    display: grid;
    gap: var(--space-3, 0.75rem);
}

.math-calculator__field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1, 0.25rem);
}

.math-calculator__field--exclusive {
    border-inline-start: 3px solid var(--color-primary, #2563eb);
    padding-inline-start: var(--space-3, 0.75rem);
}

.math-calculator__label {
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium, 500);
    color: var(--color-text, #1a1a1a);
}

.math-calculator__input {
    min-height: 44px;
    padding-inline: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #1a1a1a);
    font-size: 1rem;
}

.math-calculator__input:focus {
    outline: 2px solid color-mix(in srgb, var(--color-primary, #2563eb) 35%, transparent);
    border-color: var(--color-primary, #2563eb);
}

.math-calculator__input[aria-invalid="true"] {
    border-color: var(--color-danger, #dc2626);
}

.math-calculator__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
    margin-block-start: var(--space-4, 1rem);
}

.math-calculator__error {
    margin-block-start: var(--space-3, 0.75rem);
    color: var(--color-danger, #dc2626);
    font-size: 0.9rem;
}

.math-calculator__result {
    margin-block-start: var(--space-4, 1rem);
    padding: var(--space-4, 1rem);
    border-radius: var(--radius-md, 0.5rem);
    background: color-mix(in srgb, var(--color-primary, #2563eb) 6%, var(--color-bg, #fff));
    border: 1px solid color-mix(in srgb, var(--color-primary, #2563eb) 18%, var(--color-border, #e5e7eb));
}

.math-calculator__message {
    margin: 0 0 var(--space-3, 0.75rem);
    font-weight: var(--font-weight-medium, 500);
}

.math-calculator__rows {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2, 0.5rem) var(--space-4, 1rem);
    margin: 0;
}

.math-calculator__row-label {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.9rem;
}

.math-calculator__row-value {
    margin: 0;
    font-weight: var(--font-weight-bold, 700);
    text-align: end;
    word-break: break-word;
}

.math-calculator__row-value--mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.95rem;
}

.math-calculator__chips {
    list-style: none;
    margin: var(--space-3, 0.75rem) 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.math-calculator__chip {
    min-height: 32px;
    padding-inline: var(--space-2, 0.5rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    border: 1px solid var(--color-border, #e5e7eb);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
}

.math-calculator__copy {
    margin-block-start: var(--space-3, 0.75rem);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1, 0.25rem);
    min-height: 40px;
    padding-inline: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #374151);
    cursor: pointer;
}

.math-calculator__copy.is-copied {
    color: var(--color-success, #16a34a);
    border-color: var(--color-success, #16a34a);
}

@media (min-width: 576px) {
    .math-calculator__fields {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .math-calculator__field--full {
        grid-column: 1 / -1;
    }
}

.math-calculator__textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
    font-family: inherit;
}

.math-calculator__select {
    cursor: pointer;
}

.math-calculator__swatch {
    width: 100%;
    height: 72px;
    margin-block: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    border: 1px solid var(--color-border, #e5e7eb);
}

/* --- Scientific calculator ---------------------------------------------- */

.scientific-calculator__display-wrap {
    margin-block-end: var(--space-3, 0.75rem);
}

.scientific-calculator__display {
    display: block;
    width: 100%;
    min-height: 56px;
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-surface-muted, #f3f4f6);
    border: 1px solid var(--color-border, #e5e7eb);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    text-align: end;
    overflow-x: auto;
}

.scientific-calculator__expression {
    margin: var(--space-1, 0.25rem) 0 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.85rem;
    text-align: end;
}

.scientific-calculator__keys {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: var(--space-2, 0.5rem);
}

.scientific-calculator__keys button {
    min-height: 44px;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #1a1a1a);
    font-size: 0.95rem;
    cursor: pointer;
}

.scientific-calculator__keys button:hover {
    border-color: var(--color-primary, #2563eb);
    color: var(--color-primary, #2563eb);
}

.scientific-calculator__equals {
    background: var(--color-primary, #2563eb) !important;
    color: #fff !important;
    border-color: transparent !important;
}

.scientific-calculator__span2 {
    grid-column: span 2;
}

.scientific-calculator__error {
    margin-block-start: var(--space-3, 0.75rem);
    color: var(--color-danger, #dc2626);
}

@media (max-width: 575.98px) {
    .scientific-calculator__keys {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* --- Engineering calculator --------------------------------------------- */

.eng-calc {
    --eng-calc-key-h: 2.25rem;
}

.eng-calc__shell {
    display: grid;
    gap: var(--space-4, 1rem);
}

@media (min-width: 992px) {
    .eng-calc__shell {
        grid-template-columns: minmax(0, 1fr) min(18rem, 32%);
        align-items: start;
    }
}

.eng-calc__main {
    min-width: 0;
}

.eng-calc__display-card {
    padding: var(--space-3, 0.75rem);
    margin-block-end: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    background: linear-gradient(180deg, rgb(var(--color-primary-rgb, 37 99 235) / 0.04) 0%, var(--color-bg-elevated, #fff) 100%);
    box-shadow: var(--shadow-sm, 0 1px 3px rgb(0 0 0 / 8%));
}

.eng-calc__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2, 0.5rem);
    margin-block-end: var(--space-2, 0.5rem);
}

.eng-calc__angle {
    display: inline-flex;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-full, 999px);
    overflow: hidden;
    background: var(--color-bg, #fff);
}

.eng-calc__angle button {
    min-height: 1.75rem;
    padding: 0.15rem 0.55rem;
    border: 0;
    background: transparent;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
}

.eng-calc__angle button + button {
    border-inline-start: 1px solid var(--color-border, #e5e7eb);
}

.eng-calc__angle button.is-active {
    background: var(--color-primary, #2563eb);
    color: #fff;
}

.eng-calc__memory {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-full, 999px);
    background: rgb(var(--color-primary-rgb, 37 99 235) / 0.08);
    font-size: 0.75rem;
    color: var(--color-text-muted, #6b7280);
}

.eng-calc__memory-label {
    font-weight: 700;
    color: var(--color-primary, #2563eb);
}

.eng-calc__memory-value {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.78rem;
    color: var(--color-text, #1a1a1a);
}

.eng-calc__expression {
    margin: 0 0 0.25rem;
    min-height: 1rem;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.78rem;
    text-align: end;
    word-break: break-all;
}

.eng-calc__input {
    display: block;
    width: 100%;
    margin-block-end: 0.35rem;
    padding: 0.35rem 0.5rem;
    border: 0;
    border-block-end: 1px dashed rgb(var(--color-primary-rgb, 37 99 235) / 0.25);
    border-radius: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9rem;
    background: transparent;
    color: var(--color-text, #1a1a1a);
}

.eng-calc__input:focus {
    outline: none;
    border-block-end-color: var(--color-primary, #2563eb);
}

.eng-calc__result {
    display: block;
    width: 100%;
    min-height: 2rem;
    padding: 0.15rem 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: clamp(1.1rem, 2.5vw, 1.45rem);
    font-weight: 700;
    text-align: end;
    overflow-x: auto;
    color: var(--color-primary, #2563eb);
}

.eng-calc__hint {
    margin: 0.35rem 0 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
}

.eng-calc__keypad-tabs,
.eng-calc__aside-tabs {
    display: flex;
    gap: 0.35rem;
    margin-block-end: var(--space-2, 0.5rem);
}

.eng-calc__keypad-tabs button,
.eng-calc__aside-tabs button {
    flex: 1;
    min-height: 2rem;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-full, 999px);
    background: var(--color-bg, #fff);
    color: var(--color-text-muted, #6b7280);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
}

.eng-calc__keypad-tabs button.is-active,
.eng-calc__aside-tabs button.is-active {
    border-color: rgb(var(--color-primary-rgb, 37 99 235) / 0.35);
    background: rgb(var(--color-primary-rgb, 37 99 235) / 0.1);
    color: var(--color-primary, #2563eb);
}

/* Keypads: always LTR so number pad is never mirrored by page RTL */
.eng-calc__keypads {
    direction: ltr;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.eng-calc__board {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.eng-calc__util {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0.35rem;
}

.eng-calc__core {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 3.25rem;
    gap: 0.35rem;
    align-items: stretch;
}

.eng-calc__numpad {
    direction: ltr;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.35rem;
}

.eng-calc__ops {
    direction: ltr;
    display: grid;
    grid-template-rows: repeat(4, minmax(0, 1fr));
    gap: 0.35rem;
}

.eng-calc__fn-grid {
    direction: ltr;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.35rem;
}

.eng-calc__util button,
.eng-calc__numpad button,
.eng-calc__ops button,
.eng-calc__fn-grid button {
    min-height: var(--eng-calc-key-h);
    padding: 0.15rem 0.25rem;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #1a1a1a);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.1;
    cursor: pointer;
    transition:
        border-color var(--duration-fast, 120ms) var(--ease-standard, ease),
        background var(--duration-fast, 120ms) var(--ease-standard, ease),
        transform var(--duration-fast, 120ms) var(--ease-standard, ease);
}

.eng-calc__numpad button {
    font-size: 1rem;
    font-weight: 700;
}

.eng-calc__util button:hover,
.eng-calc__numpad button:hover,
.eng-calc__ops button:hover,
.eng-calc__fn-grid button:hover {
    border-color: rgb(var(--color-primary-rgb, 37 99 235) / 0.45);
    background: rgb(var(--color-primary-rgb, 37 99 235) / 0.04);
}

.eng-calc__util button:active,
.eng-calc__numpad button:active,
.eng-calc__ops button:active,
.eng-calc__fn-grid button:active {
    transform: scale(0.97);
}

.eng-calc__key--muted {
    color: var(--color-text-muted, #6b7280);
    background: var(--color-surface-muted, #f3f4f6);
}

.eng-calc__key--op {
    background: rgb(var(--color-primary-rgb, 37 99 235) / 0.08);
    color: var(--color-primary, #2563eb);
    font-size: 1.05rem;
}

.eng-calc__zero {
    grid-column: span 1;
}

.eng-calc__equals {
    background: var(--color-primary, #2563eb) !important;
    color: #fff !important;
    border-color: transparent !important;
    font-size: 1.1rem !important;
}

.eng-calc__error {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    margin-block-start: 0.55rem;
    padding: 0.55rem 0.65rem;
    border: 1px solid rgb(220 38 38 / 0.22);
    border-radius: var(--radius-md, 0.5rem);
    background: linear-gradient(180deg, rgb(254 242 242) 0%, rgb(254 226 226 / 0.75) 100%);
    color: #991b1b;
    animation: eng-calc-error-in 180ms var(--ease-out, ease-out);
}

.eng-calc__error[hidden] {
    display: none !important;
}

.eng-calc__display-card.has-error {
    border-color: rgb(220 38 38 / 0.35);
    box-shadow:
        var(--shadow-sm, 0 1px 3px rgb(0 0 0 / 8%)),
        0 0 0 3px rgb(220 38 38 / 0.1);
}

.eng-calc__display-card.has-error .eng-calc__input {
    border-block-end-color: rgb(220 38 38 / 0.55);
}

.eng-calc__display-card.has-error .eng-calc__result {
    color: #b91c1c;
}

.eng-calc__display-card.has-error .eng-calc__hint {
    display: none;
}

.eng-calc__error-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: var(--radius-full, 999px);
    background: rgb(220 38 38 / 0.12);
    color: #dc2626;
    font-size: 0.85rem;
}

.eng-calc__error-body {
    flex: 1;
    min-width: 0;
    text-align: start;
}

.eng-calc__error-title {
    display: block;
    margin: 0 0 0.1rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: #991b1b;
}

.eng-calc__error-text {
    margin: 0;
    font-size: 0.78rem;
    line-height: 1.45;
    color: #7f1d1d;
}

.eng-calc__error-dismiss {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.6rem;
    height: 1.6rem;
    margin: -0.1rem;
    border: 0;
    border-radius: var(--radius-md, 0.5rem);
    background: transparent;
    color: #b91c1c;
    cursor: pointer;
}

.eng-calc__error-dismiss:hover {
    background: rgb(220 38 38 / 0.12);
}

@keyframes eng-calc-error-in {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .eng-calc__error {
        animation: none;
    }
}

.eng-calc__aside {
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    padding: var(--space-3, 0.75rem);
    background: var(--color-bg-elevated, #fff);
    box-shadow: var(--shadow-sm, 0 1px 3px rgb(0 0 0 / 8%));
}

@media (min-width: 992px) {
    .eng-calc__aside {
        position: sticky;
        top: 5.5rem;
        max-height: calc(100vh - 7rem);
        display: flex;
        flex-direction: column;
    }
}

.eng-calc__aside-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-block-end: 0.5rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-text, #1a1a1a);
}

.eng-calc__clear-history {
    border: 0;
    background: transparent;
    color: var(--color-primary, #2563eb);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
}

.eng-calc__aside-desc {
    margin: 0 0 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-muted, #6b7280);
}

.eng-calc__aside-panel {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.eng-calc__constants {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
    overflow: auto;
    max-height: min(16rem, 40vh);
}

.eng-calc__const {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.1rem;
    padding: 0.35rem 0.45rem;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-surface-muted, #f3f4f6);
    text-align: start;
    cursor: pointer;
}

.eng-calc__const strong {
    font-size: 0.78rem;
    color: var(--color-primary, #2563eb);
}

.eng-calc__const span {
    font-size: 0.65rem;
    color: var(--color-text-muted, #6b7280);
    line-height: 1.3;
}

.eng-calc__const:hover {
    border-color: var(--color-primary, #2563eb);
}

.eng-calc__history {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    overflow: auto;
    max-height: min(16rem, 40vh);
    min-height: 2.5rem;
}

.eng-calc__history:empty::before {
    content: "هنوز محاسبه‌ای ثبت نشده است.";
    color: var(--color-text-muted, #6b7280);
    font-size: 0.78rem;
}

.eng-calc__history-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.1rem;
    width: 100%;
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    cursor: pointer;
    text-align: end;
}

.eng-calc__history-item:hover {
    border-color: var(--color-primary, #2563eb);
    background: rgb(var(--color-primary-rgb, 37 99 235) / 0.04);
}

.eng-calc__history-expr {
    font-size: 0.72rem;
    color: var(--color-text-muted, #6b7280);
    word-break: break-all;
}

.eng-calc__history-result {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-text, #1a1a1a);
}

/* Desktop: show all boards stacked — numpad always on top, then fn grids */
@media (min-width: 992px) {
    .eng-calc {
        --eng-calc-key-h: 2.15rem;
    }

    .eng-calc__keypad-tabs {
        display: none;
    }

    .eng-calc__board[data-keypad-panel] {
        display: flex !important;
    }

    .eng-calc__util {
        grid-template-columns: repeat(14, minmax(0, 1fr));
    }

    .eng-calc__core {
        grid-template-columns: minmax(0, 1fr) 3.5rem;
        max-width: 22rem;
    }

    .eng-calc__fn-grid {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }

    .eng-calc__board--fns {
        padding-top: 0.15rem;
        border-top: 1px solid var(--color-border, #e5e7eb);
    }
}

@media (max-width: 991.98px) {
    .eng-calc__util {
        grid-template-columns: repeat(7, minmax(0, 1fr));
    }

    .eng-calc__fn-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 575.98px) {
    .eng-calc {
        --eng-calc-key-h: 2.6rem;
    }

    .eng-calc__util {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .eng-calc__core {
        grid-template-columns: minmax(0, 1fr) 3rem;
    }

    .eng-calc__fn-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* --- QR generator ------------------------------------------------------- */

.qr-generator__preview {
    margin-block-start: var(--space-4, 1rem);
    display: flex;
    justify-content: center;
}

.qr-generator__preview canvas {
    width: min(100%, 256px);
    height: auto;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: #fff;
}

.qr-generator__download {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

/* --- Number counter ----------------------------------------------------- */

.number-counter__list {
    list-style: none;
    margin: var(--space-4, 1rem) 0 0;
    padding: 0;
    display: grid;
    gap: var(--space-3, 0.75rem);
}

.number-counter__item {
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    padding: var(--space-3, 0.75rem);
    background: var(--color-bg, #fff);
}

.number-counter__meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-3, 0.75rem);
    margin-block-end: var(--space-2, 0.5rem);
}

.number-counter__name {
    font-size: 1rem;
}

.number-counter__value {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 1.35rem;
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-primary, #2563eb);
}

.number-counter__controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.number-counter__btn {
    min-height: 40px;
    min-width: 40px;
    padding-inline: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    cursor: pointer;
}

.number-counter__btn:hover {
    border-color: var(--color-primary, #2563eb);
    color: var(--color-primary, #2563eb);
}

.number-counter__btn--ghost {
    color: var(--color-text-muted, #6b7280);
}

.number-counter__btn--danger {
    color: var(--color-danger, #dc2626);
}

.number-counter__step {
    margin: var(--space-2, 0.5rem) 0 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.85rem;
}

.number-counter__summary {
    margin-block-start: var(--space-4, 1rem);
    padding: var(--space-4, 1rem);
    border-radius: var(--radius-md, 0.5rem);
    background: color-mix(in srgb, var(--color-primary, #2563eb) 6%, var(--color-bg, #fff));
    border: 1px solid color-mix(in srgb, var(--color-primary, #2563eb) 18%, var(--color-border, #e5e7eb));
}

/* ── Time tools ─────────────────────────────────────────────── */

.time-tool__clock,
.time-tool__countdown {
    font-size: clamp(2rem, 6vw, 3.25rem);
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
    margin: var(--space-4, 1rem) 0;
    color: var(--color-text, #111827);
}

.time-tool__sync,
.time-tool__animal,
.time-tool__legend {
    text-align: center;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.9rem;
}

.time-tool__select,
.time-tool__select option {
    direction: rtl;
    text-align: right;
    color: #111827 !important;
    background-color: #fff !important;
}

.time-tool__precision-note {
    text-align: center;
}

.time-tool__nav,
.time-tool__toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
    align-items: center;
    justify-content: center;
    margin-block: var(--space-3, 0.75rem);
}

.time-tool__triple {
    display: grid;
    gap: var(--space-3, 0.75rem);
    grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
    margin-block-start: var(--space-4, 1rem);
}

.time-tool__card,
.time-tool__result-box {
    padding: var(--space-4, 1rem);
    border-radius: var(--radius-md, 0.5rem);
    border: 1px solid var(--color-border, #e5e7eb);
    background: color-mix(in srgb, var(--color-primary, #2563eb) 4%, var(--color-bg, #fff));
}

.time-tool__card h3,
.time-tool__subtitle {
    margin: 0 0 var(--space-2, 0.5rem);
    font-size: 1rem;
}

.time-tool__long {
    margin: 0;
    font-size: 1.05rem;
}

.time-tool__short {
    margin: var(--space-1, 0.25rem) 0 0;
    color: var(--color-text-muted, #6b7280);
    font-variant-numeric: tabular-nums;
}

.time-tool__check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: var(--space-3, 0.75rem) 0;
}

.time-tool__laps {
    margin: var(--space-3, 0.75rem) 0 0;
    padding-inline-start: 1.25rem;
    font-variant-numeric: tabular-nums;
}

.time-tool__stopwatch {
    --stopwatch-bg: #f8fafc;
    --stopwatch-surface: #fff;
    --stopwatch-text: #0f172a;
    --stopwatch-muted: #64748b;
    --stopwatch-border: #e2e8f0;
    --stopwatch-lap-surface: #f8fafc;
    --stopwatch-accent: var(--color-primary, #2563eb);
    --stopwatch-scale: 1;
    position: relative;
    isolation: isolate;
    overflow: hidden;
    container-type: inline-size;
    width: min(100%, 52rem);
    margin-inline: auto;
    padding: clamp(1rem, 3vw, 1.75rem);
    border: 1px solid var(--stopwatch-border);
    border-radius: var(--radius-xl, 1rem);
    background: var(--stopwatch-surface);
    color: var(--stopwatch-text);
    box-shadow: 0 12px 36px rgb(15 23 42 / 0.08);
    transition: background-color var(--duration-base, 180ms), color var(--duration-base, 180ms);
}

.time-tool__stopwatch::before,
.time-tool__stopwatch::after {
    position: absolute;
    z-index: 0;
    content: "";
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--duration-base, 180ms);
}

.time-tool__stopwatch > * {
    position: relative;
    z-index: 1;
}

.time-tool__stopwatch[data-backdrop="waves"]::before {
    inset: auto -35% -55% -35%;
    height: 78%;
    border-radius: 44% 56% 0 0 / 32% 38% 0 0;
    background:
        radial-gradient(ellipse at 35% 35%, color-mix(in srgb, var(--stopwatch-accent) 28%, transparent), transparent 54%),
        radial-gradient(ellipse at 66% 64%, color-mix(in srgb, var(--stopwatch-accent) 18%, transparent), transparent 58%);
    opacity: 1;
    animation: stopwatch-wave 12s ease-in-out infinite alternate;
}

.time-tool__stopwatch[data-backdrop="aurora"]::before {
    inset: -45%;
    background:
        radial-gradient(circle at 24% 38%, color-mix(in srgb, var(--stopwatch-accent) 22%, transparent), transparent 33%),
        radial-gradient(circle at 76% 60%, rgb(139 92 246 / 0.16), transparent 34%),
        radial-gradient(circle at 52% 18%, rgb(34 211 238 / 0.13), transparent 38%);
    opacity: 1;
    filter: blur(14px);
    animation: stopwatch-aurora 16s ease-in-out infinite alternate;
}

@keyframes stopwatch-wave {
    from { transform: translate3d(-4%, 3%, 0) rotate(-3deg) scale(1); }
    to { transform: translate3d(5%, -5%, 0) rotate(4deg) scale(1.08); }
}

@keyframes stopwatch-aurora {
    from { transform: translate3d(-4%, -2%, 0) rotate(0deg) scale(1); }
    to { transform: translate3d(5%, 4%, 0) rotate(10deg) scale(1.08); }
}

.time-tool__stopwatch[data-theme="dark"] {
    --stopwatch-bg: #0f172a;
    --stopwatch-surface: #111c31;
    --stopwatch-text: #f8fafc;
    --stopwatch-muted: #cbd5e1;
    --stopwatch-border: #334155;
    --stopwatch-lap-surface: #18243a;
    --stopwatch-accent: #60a5fa;
}

.time-tool__stopwatch-toolbar {
    position: relative;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.time-tool__stopwatch.is-palette-open .time-tool__stopwatch-toolbar {
    z-index: 40;
}

.time-tool__theme-picker {
    position: relative;
    display: inline-flex;
    gap: 0.25rem;
    padding: 0.2rem;
    border: 1px solid var(--stopwatch-border);
    border-radius: var(--radius-full, 999px);
    background: var(--stopwatch-bg);
}

.time-tool__stopwatch > .time-tool__palette-pop {
    position: absolute;
    z-index: 50;
    left: 0;
    top: 0;
    width: max-content;
    max-width: min(calc(100% - 1rem), 20rem);
    padding: 0.45rem 0.55rem;
    border: 1px solid var(--stopwatch-border);
    border-radius: var(--radius-full, 999px);
    background: color-mix(in srgb, var(--stopwatch-bg) 94%, #000);
    box-shadow: 0 10px 24px rgb(0 0 0 / 0.3);
}

.time-tool__palette-swatches {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
}

.time-tool__palette-swatch {
    flex: 0 0 auto;
    width: 1.55rem;
    height: 1.55rem;
    border: 2px solid rgb(255 255 255 / 0.35);
    border-radius: 0.35rem;
    background: var(--swatch);
    cursor: pointer;
    box-shadow: 0 1px 4px rgb(0 0 0 / 0.25);
}

.time-tool__palette-swatch:hover,
.time-tool__palette-swatch.is-active {
    border-color: #fff;
    transform: scale(1.12);
}

.time-tool__stopwatch[data-palette="ocean"] {
    --stopwatch-bg: #082f49;
    --stopwatch-surface: linear-gradient(155deg, #0ea5e9 0%, #1d4ed8 48%, #0f172a 100%);
    --stopwatch-text: #f0f9ff;
    --stopwatch-muted: #bae6fd;
    --stopwatch-border: #0284c7;
    --stopwatch-lap-surface: rgb(8 47 73 / 0.72);
    --stopwatch-accent: #38bdf8;
}

.time-tool__stopwatch[data-palette="sunset"] {
    --stopwatch-bg: #7c2d12;
    --stopwatch-surface: linear-gradient(155deg, #fb7185 0%, #f97316 45%, #7c2d12 100%);
    --stopwatch-text: #fff7ed;
    --stopwatch-muted: #fed7aa;
    --stopwatch-border: #ea580c;
    --stopwatch-lap-surface: rgb(124 45 18 / 0.72);
    --stopwatch-accent: #fdba74;
}

.time-tool__stopwatch[data-palette="jade"] {
    --stopwatch-bg: #062a2a;
    --stopwatch-surface: linear-gradient(145deg, #083344, #123129);
    --stopwatch-text: #ecfdf5;
    --stopwatch-muted: #a7f3d0;
    --stopwatch-border: #166534;
    --stopwatch-lap-surface: #0d3b34;
    --stopwatch-accent: #34d399;
}

.time-tool__stopwatch[data-palette="violet"] {
    --stopwatch-bg: #4c1d95;
    --stopwatch-surface: linear-gradient(155deg, #c084fc 0%, #7c3aed 46%, #312e81 100%);
    --stopwatch-text: #f5f3ff;
    --stopwatch-muted: #ddd6fe;
    --stopwatch-border: #7c3aed;
    --stopwatch-lap-surface: rgb(76 29 149 / 0.72);
    --stopwatch-accent: #d8b4fe;
}

.time-tool__stopwatch[data-palette="midnight"] {
    --stopwatch-bg: #111827;
    --stopwatch-surface: linear-gradient(155deg, #6366f1 0%, #1e293b 52%, #020617 100%);
    --stopwatch-text: #f8fafc;
    --stopwatch-muted: #c7d2fe;
    --stopwatch-border: #4338ca;
    --stopwatch-lap-surface: rgb(17 24 39 / 0.78);
    --stopwatch-accent: #a5b4fc;
}

.time-tool__stopwatch[data-palette="rose"] {
    --stopwatch-bg: #881337;
    --stopwatch-surface: linear-gradient(155deg, #fb7185 0%, #e11d48 44%, #4c0519 100%);
    --stopwatch-text: #fff1f2;
    --stopwatch-muted: #fecdd3;
    --stopwatch-border: #be123c;
    --stopwatch-lap-surface: rgb(136 19 55 / 0.72);
    --stopwatch-accent: #fda4af;
}

.time-tool__stopwatch[data-palette] {
    background: var(--stopwatch-surface);
}

.time-tool__display-controls {
    display: inline-flex;
    gap: 0.25rem;
    padding: 0.2rem;
    border: 1px solid var(--stopwatch-border);
    border-radius: var(--radius-full, 999px);
    background: var(--stopwatch-bg);
}

.time-tool__display-controls [data-action="size-down"],
.time-tool__display-controls [data-action="size-up"] {
    display: none;
}

.time-tool__icon-btn,
.time-tool__fullscreen-btn {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md, 0.5rem);
    background: transparent;
    color: var(--stopwatch-muted);
    cursor: pointer;
}

.time-tool__icon-btn {
    width: 2rem;
    height: 2rem;
}

.time-tool__icon-btn:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.time-tool__icon-btn.is-active,
.time-tool__icon-btn:hover,
.time-tool__fullscreen-btn:hover {
    border-color: color-mix(in srgb, var(--stopwatch-accent) 40%, var(--stopwatch-border));
    background: color-mix(in srgb, var(--stopwatch-accent) 14%, transparent);
    color: var(--stopwatch-accent);
}

.time-tool__fullscreen-btn {
    padding: 0.4rem 0.65rem;
    border-color: var(--stopwatch-border);
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: var(--font-weight-semibold, 600);
}

.time-tool__countdown--stopwatch {
    margin-block: clamp(1.5rem, 5vw, 2.5rem) 0.35rem;
    color: var(--stopwatch-text);
    font-size: min(calc(clamp(2.65rem, 10vw, 5.5rem) * var(--stopwatch-scale)), 14cqw);
    line-height: 1;
    letter-spacing: 0.03em;
}

.time-tool__status,
.time-tool__shortcut-hint {
    margin: 0;
    color: var(--stopwatch-muted);
    text-align: center;
    font-size: var(--font-size-xs, 0.75rem);
}

.time-tool__stopwatch-actions {
    justify-content: center;
    margin-block: 1.5rem 0.75rem;
}

.time-tool__stopwatch-actions .btn--primary,
.time-tool__stopwatch-actions .btn--ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 3.15rem;
    padding-inline: 1.2rem;
    border-radius: var(--radius-lg, 0.75rem);
    font-weight: var(--font-weight-bold, 700);
}

.time-tool__stopwatch-actions .btn--primary .bi,
.time-tool__stopwatch-actions .btn--ghost .bi {
    font-size: 1.15rem;
    line-height: 1;
}

.time-tool__stopwatch-actions .btn--primary {
    order: 2;
    min-width: 9.25rem;
    box-shadow: 0 8px 20px color-mix(in srgb, var(--color-primary, #2563eb) 25%, transparent);
}

/* Ghost actions must follow stopwatch theme (never page white). */
.time-tool__stopwatch-actions .btn--ghost {
    background-color: color-mix(in srgb, var(--stopwatch-bg) 72%, transparent);
    color: var(--stopwatch-muted);
    border-color: var(--stopwatch-border);
}

.time-tool__stopwatch-actions .btn--ghost:hover,
.time-tool__stopwatch-actions .btn--ghost:focus {
    background-color: color-mix(in srgb, var(--stopwatch-accent) 14%, var(--stopwatch-bg));
    color: var(--stopwatch-accent);
    border-color: color-mix(in srgb, var(--stopwatch-accent) 45%, var(--stopwatch-border));
}

.time-tool__stopwatch-actions .btn--ghost:disabled {
    background-color: color-mix(in srgb, var(--stopwatch-bg) 55%, transparent);
    color: var(--stopwatch-muted);
    border-color: var(--stopwatch-border);
    opacity: 0.55;
}

.time-tool__stopwatch-actions [data-action="lap"] {
    order: 1;
    color: var(--stopwatch-accent);
    border-color: color-mix(in srgb, var(--stopwatch-accent) 45%, var(--stopwatch-border));
}

.time-tool__stopwatch-actions [data-action="reset"] {
    order: 3;
    color: var(--stopwatch-muted);
    background-color: transparent;
    border-color: var(--stopwatch-border);
}

.time-tool__shortcut-hint kbd {
    display: inline-block;
    padding: 0.1rem 0.35rem;
    border: 1px solid var(--stopwatch-border);
    border-radius: 0.3rem;
    background: var(--stopwatch-bg);
    color: inherit;
    font-family: inherit;
    font-size: inherit;
}

.time-tool__shortcut-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
}

.time-tool__shortcut-key:hover kbd,
.time-tool__shortcut-key:focus-visible kbd {
    border-color: var(--stopwatch-accent);
    color: var(--stopwatch-accent);
}

.time-tool__laps {
    width: min(100%, 52rem);
    display: grid;
    gap: 0.5rem;
    margin-inline: auto;
    padding: 0;
    list-style: none;
    max-height: 15rem;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.time-tool__laps:empty {
    display: none;
}

.time-tool__laps li {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--stopwatch-border, var(--color-border, #e5e7eb));
    border-radius: var(--radius-md, 0.5rem);
    background: var(--stopwatch-lap-surface, var(--color-bg-muted, #f8fafc));
    color: var(--stopwatch-text, var(--color-text, #0f172a));
}

.time-tool__laps strong {
    color: var(--stopwatch-text, var(--color-text, #0f172a));
    font-variant-numeric: tabular-nums;
}

.time-tool__laps small {
    color: var(--stopwatch-muted, var(--color-text-muted, #64748b));
    font-variant-numeric: tabular-nums;
}

.time-tool__stopwatch:fullscreen {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 0;
    border-radius: 0;
    background: var(--stopwatch-bg);
    padding: clamp(1.5rem, 6vw, 4rem);
}

.time-tool__stopwatch:fullscreen .time-tool__stopwatch-toolbar {
    position: absolute !important;
    inset: clamp(1.5rem, 5vw, 3rem) clamp(1.5rem, 5vw, 3rem) auto;
    justify-content: space-between;
}

.time-tool__stopwatch:fullscreen .time-tool__display-controls [data-action="size-down"],
.time-tool__stopwatch:fullscreen .time-tool__display-controls [data-action="size-up"] {
    display: inline-flex;
}

.time-tool__stopwatch:fullscreen .time-tool__countdown--stopwatch {
    font-size: min(calc(clamp(4rem, 14vw, 11rem) * var(--stopwatch-scale)), 14cqw);
}

.time-tool__stopwatch:fullscreen .time-tool__stopwatch-actions {
    margin-block: clamp(2rem, 5vh, 4rem) 1rem;
}

.time-tool__stopwatch:fullscreen .time-tool__laps {
    width: min(100%, 46rem);
    max-height: min(27vh, 15rem);
    margin-top: clamp(1rem, 3vh, 2rem);
}

.time-tool__stopwatch:fullscreen .time-tool__laps li {
    background: color-mix(in srgb, var(--stopwatch-surface) 78%, transparent);
    border-color: color-mix(in srgb, var(--stopwatch-border) 75%, transparent);
}

@media (max-width: 575px) {
    .time-tool__stopwatch {
        padding: 0.85rem 0.75rem 1rem;
    }

    .time-tool__fullscreen-btn span {
        display: none;
    }

    .time-tool__stopwatch-toolbar {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
        align-items: center;
        gap: 0.35rem;
    }

    .time-tool__display-controls {
        order: 1;
        justify-self: start;
        min-width: 0;
    }

    .time-tool__fullscreen-btn {
        order: 2;
        justify-self: center;
        width: 2.15rem;
        height: 2.15rem;
        padding: 0;
        border-radius: var(--radius-md, 0.5rem);
    }

    .time-tool__theme-picker {
        order: 3;
        justify-self: end;
        min-width: 0;
    }

    .time-tool__theme-picker,
    .time-tool__display-controls {
        gap: 0.1rem;
        padding: 0.15rem;
    }

    .time-tool__icon-btn {
        width: 1.85rem;
        height: 1.85rem;
    }

    .time-tool__countdown--stopwatch {
        margin-block: 1.35rem 0.25rem;
        font-size: clamp(2.2rem, 12vw, 3.25rem);
    }

    .time-tool__shortcut-hint {
        display: none;
    }

    .time-tool__stopwatch-actions {
        display: grid;
        grid-template-columns: 1fr 1.25fr 1fr;
        gap: 0.45rem;
        margin-block: 1.15rem 0.35rem;
        align-items: stretch;
    }

    .time-tool__stopwatch-actions .btn--primary,
    .time-tool__stopwatch-actions .btn--ghost {
        min-width: 0;
        min-height: 3.4rem;
        flex-direction: column;
        gap: 0.15rem;
        padding-inline: 0.3rem;
        font-size: 0.78rem;
        line-height: 1.15;
    }

    .time-tool__stopwatch-actions .btn--primary {
        min-width: 0;
        font-size: 0.88rem;
        box-shadow: 0 6px 16px color-mix(in srgb, var(--color-primary, #2563eb) 30%, transparent);
    }

    .time-tool__stopwatch-actions .btn--primary .bi,
    .time-tool__stopwatch-actions .btn--ghost .bi {
        font-size: 1.25rem;
    }

    .time-tool__laps {
        max-height: 11rem;
    }

    .time-tool__stopwatch:fullscreen .time-tool__stopwatch-toolbar {
        top: 1rem;
        right: 0.75rem;
        bottom: auto;
        left: 0.75rem;
        display: grid;
        grid-template-columns: auto minmax(0, 1fr) auto;
        align-items: center;
        justify-content: initial;
        gap: 0.25rem;
        flex-wrap: nowrap;
    }

    .time-tool__stopwatch:fullscreen .time-tool__display-controls {
        order: unset;
        justify-self: center;
    }

    .time-tool__stopwatch:fullscreen .time-tool__theme-picker,
    .time-tool__stopwatch:fullscreen .time-tool__display-controls {
        gap: 0.1rem;
        padding: 0.15rem;
    }

    .time-tool__stopwatch:fullscreen .time-tool__icon-btn {
        width: 1.7rem;
        height: 1.7rem;
    }

    .time-tool__stopwatch:fullscreen .time-tool__countdown--stopwatch {
        margin-top: 3.5rem;
    }

    .time-tool__stopwatch:fullscreen .time-tool__laps {
        max-height: 22vh;
    }

    .time-tool__stopwatch:fullscreen .time-tool__stopwatch-actions {
        width: min(100%, 24rem);
        margin-inline: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    .time-tool__stopwatch::before,
    .time-tool__stopwatch::after {
        animation: none !important;
    }
}

.time-tool__timeline {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 0.25rem;
    margin-block: var(--space-3, 0.75rem);
}

.time-tool__hour {
    display: block;
    text-align: center;
    padding: 0.35rem 0;
    border-radius: var(--radius-sm, 0.35rem);
    background: var(--color-bg-muted, #f3f4f6);
    font-size: 0.75rem;
    font-variant-numeric: tabular-nums;
}

.time-tool__hour.is-from {
    background: color-mix(in srgb, #2563eb 35%, var(--color-bg, #fff));
    color: #1e3a8a;
    font-weight: 700;
}

.time-tool__hour.is-to {
    background: color-mix(in srgb, #16a34a 35%, var(--color-bg, #fff));
    color: #14532d;
    font-weight: 700;
}

.time-index__search {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
    margin-block: var(--space-4, 1rem);
}

.time-index__search .math-calculator__input {
    flex: 1 1 14rem;
}

.time-index__grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-3, 0.75rem);
}

.time-index__card {
    display: flex;
    align-items: center;
    gap: var(--space-3, 0.75rem);
    padding: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    text-decoration: none;
    color: inherit;
    background: var(--color-bg, #fff);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.time-index__card:hover {
    border-color: var(--color-primary, #2563eb);
    box-shadow: 0 1px 4px color-mix(in srgb, var(--color-primary, #2563eb) 18%, transparent);
}

.time-index__icon {
    flex: 0 0 auto;
    width: 2.5rem;
    height: 2.5rem;
    display: grid;
    place-items: center;
    font-size: 1.35rem;
    color: var(--color-primary, #2563eb);
}

.time-index__body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.time-index__body span {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.9rem;
}

/* ── Financial tools ────────────────────────────────────────── */

.financial-tool__intro {
    margin: 0 0 var(--space-4, 1rem);
    color: var(--color-text-muted, #6b7280);
    line-height: 1.8;
}

.financial-tool__fields {
    display: grid;
    gap: var(--space-3, 0.75rem);
}

.financial-tool__field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1, 0.25rem);
}

.financial-tool__field > label {
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium, 500);
}

.financial-tool__input-wrap {
    position: relative;
}

.financial-tool__input-wrap .math-calculator__input {
    width: 100%;
    padding-inline-end: 5.25rem;
    font-variant-numeric: tabular-nums;
}

.financial-tool__input-wrap > span {
    position: absolute;
    inset-inline-end: var(--space-3, 0.75rem);
    inset-block-start: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted, #6b7280);
    font-size: 0.85rem;
    pointer-events: none;
}

.financial-tool__input-wrap input[readonly] {
    background: var(--color-bg-muted, #f3f4f6);
}

.financial-tool__select,
.financial-tool__select option {
    direction: rtl;
    text-align: right;
    color: #111827 !important;
    background-color: #fff !important;
}

.financial-tool__output {
    margin-block-start: var(--space-4, 1rem);
}

.financial-tool__results {
    margin: 0;
    display: grid;
    gap: var(--space-2, 0.5rem);
}

.financial-tool__result-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-3, 0.75rem);
    align-items: center;
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg-muted, #f3f4f6);
}

.financial-tool__result-row dt {
    color: var(--color-text-muted, #6b7280);
}

.financial-tool__result-row dd {
    margin: 0;
    font-weight: var(--font-weight-bold, 700);
    text-align: end;
    font-variant-numeric: tabular-nums;
}

.financial-tool__result-row--emphasis {
    border: 1px solid color-mix(in srgb, var(--color-primary, #2563eb) 30%, var(--color-border, #e5e7eb));
    background: color-mix(in srgb, var(--color-primary, #2563eb) 8%, var(--color-bg, #fff));
}

.financial-tool__warning,
.financial-tool__note,
.financial-tool__words {
    margin: var(--space-4, 1rem) 0 0;
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    line-height: 1.8;
}

.financial-tool__warning {
    color: #854d0e;
    border: 1px solid #fde68a;
    background: #fffbeb;
}

.financial-tool__note,
.financial-tool__words {
    color: var(--color-text-muted, #6b7280);
    background: var(--color-bg-muted, #f3f4f6);
}

.financial-tool__checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    margin-block-start: var(--space-3, 0.75rem);
}

.financial-tool__comparison {
    margin-block-start: var(--space-4, 1rem);
    padding: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
}

.financial-tool__comparison h3 {
    margin: 0 0 var(--space-3, 0.75rem);
    font-size: 1rem;
}

.financial-tool__comparison p {
    margin: var(--space-2, 0.5rem) 0;
}

.financial-tool__schedule {
    margin-block-start: var(--space-4, 1rem);
}

.financial-tool__schedule summary {
    cursor: pointer;
    font-weight: var(--font-weight-medium, 500);
    color: var(--color-primary, #2563eb);
}

.financial-tool__table-wrap {
    overflow-x: auto;
    margin-block-start: var(--space-3, 0.75rem);
}

.financial-tool__table-wrap table {
    width: 100%;
    min-width: 42rem;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.financial-tool__table-wrap th,
.financial-tool__table-wrap td {
    padding: var(--space-2, 0.5rem);
    border-bottom: 1px solid var(--color-border, #e5e7eb);
    text-align: end;
    white-space: nowrap;
}

@media (min-width: 576px) {
    .financial-tool__fields {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* ── Vipad coin & loan calculator ───────────────────────────── */

.vipad-calc {
    --vipad-primary: #6d28d9;
    --vipad-secondary: #ec4899;
    --vipad-soft: color-mix(in srgb, var(--vipad-primary) 7%, var(--color-bg, #fff));
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.vipad-calc *,
.vipad-calc *::before,
.vipad-calc *::after {
    box-sizing: border-box;
}

.vipad-calc__notice {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2, 0.5rem);
    margin-block-end: var(--space-4, 1rem);
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    border: 1px solid color-mix(in srgb, var(--vipad-primary) 18%, var(--color-border, #e5e7eb));
    border-radius: var(--radius-lg, 0.75rem);
    background: linear-gradient(120deg, var(--vipad-soft), color-mix(in srgb, var(--vipad-secondary) 5%, var(--color-bg, #fff)));
}

.vipad-calc__notice span {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    color: var(--vipad-primary);
    font-weight: 800;
}

.vipad-calc__notice p {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.88rem;
}

.vipad-calc__modes {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2, 0.5rem);
    margin-block-end: var(--space-4, 1rem);
}

.vipad-calc__modes button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2, 0.5rem);
    min-height: 4.5rem;
    padding: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    color: var(--color-text, #111827);
    background: var(--color-bg, #fff);
    cursor: pointer;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.vipad-calc__modes button:hover {
    transform: translateY(-1px);
    border-color: color-mix(in srgb, var(--vipad-primary) 45%, var(--color-border, #e5e7eb));
}

.vipad-calc__modes button.is-active {
    border-color: var(--vipad-primary);
    color: var(--vipad-primary);
    background: var(--vipad-soft);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--vipad-primary) 9%, transparent);
}

.vipad-calc__modes i {
    font-size: 1.4rem;
}

.vipad-calc__modes span {
    display: grid;
    gap: 0.1rem;
    text-align: start;
}

.vipad-calc__modes strong {
    font-size: 0.9rem;
}

.vipad-calc__modes small {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
}

.vipad-calc__workspace {
    display: flex;
    flex-direction: column;
    gap: var(--space-5, 1.25rem);
    width: 100%;
    min-width: 0;
    max-width: 100%;
}

.vipad-calc__form {
    width: 100%;
    min-width: 0;
    padding: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--color-bg, #fff);
}

.vipad-calc__form-heading {
    margin-block-end: var(--space-3, 0.75rem);
}

.vipad-calc__form-heading > span {
    color: var(--vipad-primary);
    font-size: 0.74rem;
    font-weight: 800;
}

.vipad-calc__form-heading h2 {
    margin: 0.2rem 0;
    font-size: 1.05rem;
}

.vipad-calc__form-heading p {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.8rem;
    line-height: 1.8;
}

.vipad-calc__quick {
    display: grid;
    gap: var(--space-3, 0.75rem);
    margin-block: var(--space-3, 0.75rem) var(--space-4, 1rem);
}

.vipad-calc__quick-group {
    display: grid;
    gap: var(--space-2, 0.5rem);
}

.vipad-calc__quick-group > span {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.78rem;
}

.vipad-calc__quick-group > div {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.vipad-calc__quick button {
    min-height: 2.35rem;
    padding: 0.45rem 0.8rem;
    border: 1px solid color-mix(in srgb, var(--vipad-primary) 22%, var(--color-border, #e5e7eb));
    border-radius: 999px;
    color: var(--vipad-primary);
    background: var(--vipad-soft);
    font-size: 0.76rem;
    cursor: pointer;
}

.vipad-calc__quick button:hover {
    border-color: var(--vipad-primary);
}

.vipad-calc__fields {
    display: grid;
    gap: var(--space-3, 0.75rem);
}

.vipad-calc__fields--primary {
    padding: var(--space-4, 1rem);
    border: 1px solid color-mix(in srgb, var(--vipad-primary) 18%, var(--color-border, #e5e7eb));
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--vipad-soft);
}

.vipad-calc__field {
    display: grid;
    gap: var(--space-1, 0.25rem);
    min-width: 0;
}

.vipad-calc__field > label {
    font-size: 0.86rem;
    font-weight: 700;
}

.vipad-calc__field > small {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
    line-height: 1.55;
}

.vipad-calc__field > .vipad-calc__input-preview {
    min-height: 1.1rem;
    color: var(--vipad-primary);
    font-size: 0.78rem;
    font-weight: 700;
}

.vipad-calc__input-wrap {
    position: relative;
}

.vipad-calc__input-wrap input,
.vipad-calc__field select {
    width: 100%;
    min-height: 2.9rem;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    color: var(--color-text, #111827);
    background: var(--color-bg, #fff);
    font: inherit;
    font-variant-numeric: tabular-nums;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.vipad-calc__input-wrap input {
    padding: 0.65rem 0.75rem;
    padding-inline-end: 4.5rem;
}

.vipad-calc__field select {
    padding: 0.65rem 0.75rem;
}

.vipad-calc__input-wrap input:focus,
.vipad-calc__field select:focus {
    border-color: var(--vipad-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--vipad-primary) 12%, transparent);
}

.vipad-calc__input-wrap span {
    position: absolute;
    inset-inline-end: 0.75rem;
    inset-block-start: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted, #6b7280);
    font-size: 0.76rem;
    pointer-events: none;
}

.vipad-calc__advanced {
    margin-block-start: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
}

.vipad-calc__advanced > summary {
    display: flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-3, 0.75rem);
    color: var(--color-text, #111827);
    font-size: 0.86rem;
    font-weight: 700;
    cursor: pointer;
}

.vipad-calc__advanced > summary small {
    margin-inline-start: auto;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    color: var(--color-text-muted, #6b7280);
    background: var(--color-bg-muted, #f3f4f6);
    font-size: 0.68rem;
}

.vipad-calc__advanced > p {
    margin: 0;
    padding: 0 var(--space-3, 0.75rem) var(--space-2, 0.5rem);
    color: var(--color-text-muted, #6b7280);
    font-size: 0.75rem;
}

.vipad-calc__advanced > .vipad-calc__fields {
    padding: var(--space-3, 0.75rem);
    border-top: 1px solid var(--color-border, #e5e7eb);
}

.vipad-calc__form .vipad-calc__result {
    margin-block: var(--space-4, 1rem);
}

.vipad-calc__result {
    display: grid;
    gap: var(--space-4, 1rem);
    width: 100%;
    min-width: 0;
    max-width: 100%;
    scroll-margin-block-start: var(--space-4, 1rem);
}

.vipad-calc__result > * {
    width: 100%;
    min-width: 0;
    max-width: 100%;
}

.vipad-calc__result.is-updated .vipad-calc__hero-result {
    animation: vipad-result-highlight 0.8s ease-out;
}

@keyframes vipad-result-highlight {
    0%,
    100% {
        box-shadow: 0 12px 30px color-mix(in srgb, var(--vipad-primary) 18%, transparent);
    }

    35% {
        box-shadow:
            0 0 0 5px color-mix(in srgb, var(--vipad-secondary) 32%, transparent),
            0 16px 36px color-mix(in srgb, var(--vipad-primary) 28%, transparent);
    }
}

.vipad-calc__mobile-result,
.vipad-calc__result-toast {
    display: none;
    border: 0;
    font: inherit;
    cursor: pointer;
}

.vipad-calc__mobile-result[hidden],
.vipad-calc__result-toast[hidden] {
    display: none !important;
}

.vipad-calc__result-toast:not([hidden]) {
    position: fixed;
    z-index: 1060;
    display: flex;
    align-items: center;
    gap: var(--space-3, 0.75rem);
    min-width: min(15rem, calc(100% - 1.5rem));
    max-width: calc(100% - 1.5rem);
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    border: 1px solid color-mix(in srgb, var(--vipad-primary) 22%, var(--color-border, #e5e7eb));
    border-radius: var(--radius-lg, 0.75rem);
    color: var(--color-text, #111827);
    background: var(--color-bg, #fff);
    box-shadow: 0 14px 35px rgb(15 23 42 / 0.18);
    opacity: 1;
}

.vipad-calc__result-toast.is-visible {
    animation: vipad-toast-in 0.22s ease-out forwards;
}

.vipad-calc__result-toast > i:first-child {
    color: #059669;
    font-size: 1.15rem;
}

.vipad-calc__result-toast > i:last-child {
    margin-inline-start: auto;
    color: var(--vipad-primary);
}

.vipad-calc__result-toast span {
    display: grid;
    text-align: start;
}

.vipad-calc__result-toast strong {
    font-size: 0.82rem;
}

.vipad-calc__result-toast small {
    color: var(--vipad-primary);
    font-size: 0.72rem;
}

.vipad-calc__mobile-result.is-updated {
    animation: vipad-mobile-bar-pulse 0.8s ease-out;
}

.vipad-calc__empty-state {
    display: flex;
    align-items: center;
    gap: var(--space-3, 0.75rem);
    padding: var(--space-4, 1rem);
    border: 1px dashed color-mix(in srgb, var(--vipad-primary) 35%, var(--color-border, #e5e7eb));
    border-radius: var(--radius-lg, 0.75rem);
    color: var(--color-text, #111827);
    background: var(--vipad-soft);
}

.vipad-calc__empty-state > i {
    flex: 0 0 auto;
    color: var(--vipad-primary);
    font-size: 1.5rem;
}

.vipad-calc__empty-state strong {
    display: block;
    margin-block-end: 0.2rem;
}

.vipad-calc__empty-state p {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.8rem;
    line-height: 1.7;
}

.vipad-calc__hero-result {
    position: relative;
    overflow: hidden;
    padding: clamp(1rem, 3vw, 1.5rem);
    border-radius: var(--radius-lg, 0.75rem);
    color: #fff;
    background:
        radial-gradient(circle at 8% 5%, rgb(255 255 255 / 0.2), transparent 32%),
        linear-gradient(135deg, var(--vipad-primary), #8b5cf6 55%, var(--vipad-secondary));
    box-shadow: 0 12px 30px color-mix(in srgb, var(--vipad-primary) 18%, transparent);
}

.vipad-calc__hero-result > span {
    display: block;
    margin-block-end: var(--space-2, 0.5rem);
    color: rgb(255 255 255 / 0.78);
    font-size: 0.8rem;
}

.vipad-calc__hero-result h2 {
    margin: 0;
    color: #fff;
    font-size: clamp(1.05rem, 2.3vw, 1.35rem);
    line-height: 1.75;
    white-space: normal;
    overflow-wrap: anywhere;
}

.vipad-calc__hero-result p {
    margin: var(--space-2, 0.5rem) 0 0;
    color: rgb(255 255 255 / 0.84);
    font-size: 0.84rem;
    line-height: 1.8;
    white-space: normal;
    overflow-wrap: anywhere;
}

.vipad-calc__summary {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2, 0.5rem);
}

.vipad-calc__summary article {
    display: grid;
    gap: var(--space-1, 0.25rem);
    min-width: 0;
    padding: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
}

.vipad-calc__summary span {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.73rem;
}

.vipad-calc__summary strong {
    overflow-wrap: anywhere;
    font-size: 0.88rem;
    line-height: 1.6;
    white-space: normal;
}

.vipad-calc__progress {
    display: grid;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--vipad-soft);
}

.vipad-calc__progress > div {
    display: flex;
    justify-content: space-between;
    gap: var(--space-3, 0.75rem);
    font-size: 0.8rem;
}

.vipad-calc__progress-track {
    display: block;
    height: 0.55rem;
    overflow: hidden;
    border-radius: 999px;
    background: color-mix(in srgb, var(--vipad-primary) 14%, var(--color-bg, #fff));
}

.vipad-calc__progress-track i {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--vipad-primary), var(--vipad-secondary));
    transition: width 0.25s ease;
}

.vipad-calc__planning {
    display: grid;
    gap: var(--space-2, 0.5rem);
}

.vipad-calc__planning article {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.15rem var(--space-3, 0.75rem);
    padding: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
}

.vipad-calc__planning i {
    grid-row: 1 / 3;
    align-self: center;
    color: var(--vipad-primary);
    font-size: 1.25rem;
}

.vipad-calc__planning span {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.75rem;
}

.vipad-calc__detail,
.vipad-calc__options {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    padding: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--color-bg, #fff);
}

.vipad-calc__options {
    padding: 0;
    overflow: hidden;
}

.vipad-calc__options > summary {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-4, 1rem);
    color: var(--vipad-primary);
    cursor: pointer;
    list-style: none;
}

.vipad-calc__options > summary::-webkit-details-marker {
    display: none;
}

.vipad-calc__options > summary::after {
    content: "نمایش";
    padding: 0.3rem 0.6rem;
    border-radius: 999px;
    color: var(--vipad-primary);
    background: var(--vipad-soft);
    font-size: 0.72rem;
    font-weight: 700;
}

.vipad-calc__options[open] > summary::after {
    content: "بستن";
}

.vipad-calc__options > summary span {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    font-weight: 800;
}

.vipad-calc__options > summary small {
    flex: 1 1 12rem;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.75rem;
    font-weight: 400;
}

.vipad-calc__options-body {
    min-width: 0;
    padding: 0 var(--space-4, 1rem) var(--space-4, 1rem);
    border-top: 1px solid var(--color-border, #e5e7eb);
}

.vipad-calc__table-hint {
    padding-block-start: var(--space-3, 0.75rem);
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
}

.vipad-calc__section-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2, 0.5rem);
    margin-block-end: var(--space-3, 0.75rem);
}

.vipad-calc__section-heading h3 {
    margin: 0.15rem 0 0;
    font-size: 1rem;
}

.vipad-calc__section-heading > span {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.76rem;
}

.vipad-calc__eyebrow {
    color: var(--vipad-primary) !important;
    font-size: 0.72rem !important;
    font-weight: 700;
}

.vipad-calc__rate {
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    color: #047857 !important;
    background: #ecfdf5;
}

.vipad-calc__details-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2, 0.5rem);
    margin: 0;
}

.vipad-calc__details-grid > div {
    min-width: 0;
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg-muted, #f3f4f6);
}

.vipad-calc__details-grid dt {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.72rem;
}

.vipad-calc__details-grid dd {
    margin: 0.2rem 0 0;
    font-size: 0.84rem;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.vipad-calc__cost-note {
    margin: var(--space-3, 0.75rem) 0 0;
    padding: var(--space-3, 0.75rem);
    border-inline-start: 3px solid #f59e0b;
    color: #854d0e;
    background: #fffbeb;
    font-size: 0.76rem;
    line-height: 1.8;
}

.vipad-calc__schedule {
    margin-block-start: var(--space-3, 0.75rem);
}

.vipad-calc__schedule summary {
    color: var(--vipad-primary);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
}

.vipad-calc__table-wrap {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
    margin-block-start: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    scrollbar-width: thin;
}

.vipad-calc__table-wrap table {
    width: 100%;
    min-width: 43rem;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.vipad-calc__table-wrap th,
.vipad-calc__table-wrap td {
    padding: 0.7rem;
    border-bottom: 1px solid var(--color-border, #e5e7eb);
    text-align: start;
    white-space: nowrap;
}

.vipad-calc__table-wrap th {
    position: sticky;
    inset-block-start: 0;
    color: var(--color-text-muted, #6b7280);
    background: var(--color-bg-muted, #f3f4f6);
    font-weight: 700;
}

.vipad-calc__table-wrap tbody tr:last-child td {
    border-bottom: 0;
}

.vipad-calc__table-wrap tr.is-selected td {
    background: var(--vipad-soft);
}

.vipad-calc__status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
}

.vipad-calc__status.is-ready {
    color: #047857;
    background: #d1fae5;
}

.vipad-calc__status.is-missing {
    color: #9a3412;
    background: #ffedd5;
}

.vipad-calc__empty {
    margin: 0;
    padding: var(--space-5, 1.25rem);
    border-radius: var(--radius-md, 0.5rem);
    color: var(--color-text-muted, #6b7280);
    background: var(--color-bg-muted, #f3f4f6);
    text-align: center;
}

.vipad-calc__source {
    display: flex;
    gap: var(--space-3, 0.75rem);
    margin-block-start: var(--space-5, 1.25rem);
    padding: var(--space-4, 1rem);
    border: 1px solid #a7f3d0;
    border-radius: var(--radius-lg, 0.75rem);
    color: #064e3b;
    background: #ecfdf5;
}

.vipad-calc__source > i {
    flex: 0 0 auto;
    color: #059669;
    font-size: 1.35rem;
}

.vipad-calc__source p {
    margin: var(--space-1, 0.25rem) 0 var(--space-2, 0.5rem);
    font-size: 0.78rem;
    line-height: 1.75;
}

.vipad-calc__source div div {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.vipad-calc__source a {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: #047857;
    font-size: 0.72rem;
    font-weight: 700;
}

@media (min-width: 720px) {
    .vipad-calc__fields {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .vipad-calc__planning,
    .vipad-calc__summary,
    .vipad-calc__details-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .vipad-calc__result-toast:not([hidden]) {
        inset-inline-start: var(--space-5, 1.25rem);
        inset-block-end: var(--space-5, 1.25rem);
    }
}

@keyframes vipad-toast-in {
    from {
        opacity: 0;
        transform: translateY(0.5rem);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes vipad-mobile-bar-pulse {
    0%,
    100% {
        box-shadow: 0 14px 34px color-mix(in srgb, var(--vipad-primary) 32%, transparent);
    }

    40% {
        box-shadow:
            0 0 0 4px color-mix(in srgb, #fff 55%, transparent),
            0 16px 40px color-mix(in srgb, var(--vipad-primary) 48%, transparent);
    }
}

@media (min-width: 1050px) {
    .vipad-calc__summary {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .vipad-calc__details-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 719px) {
    .vipad-calc {
        padding-block-end: calc(5.5rem + env(safe-area-inset-bottom, 0px));
    }

    .vipad-calc__result-toast {
        display: none !important;
    }

    .vipad-calc__mobile-result:not([hidden]) {
        position: fixed;
        z-index: 1050;
        left: 50%;
        bottom: calc(0.5rem + env(safe-area-inset-bottom, 0px));
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-3, 0.75rem);
        width: min(calc(100% - 1rem), 34rem);
        min-height: 4rem;
        padding: 0.65rem var(--space-4, 1rem);
        border: 1px solid rgb(255 255 255 / 0.22);
        border-radius: var(--radius-lg, 0.75rem);
        color: #fff;
        background: linear-gradient(135deg, var(--vipad-primary), #8b5cf6);
        box-shadow: 0 14px 34px color-mix(in srgb, var(--vipad-primary) 32%, transparent);
        transform: translateX(-50%);
    }

    .vipad-calc__mobile-result > span {
        display: grid;
        min-width: 0;
        text-align: start;
    }

    .vipad-calc__mobile-result small {
        color: rgb(255 255 255 / 0.74);
        font-size: 0.68rem;
    }

    .vipad-calc__mobile-result strong {
        overflow: hidden;
        font-size: 0.9rem;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .vipad-calc__mobile-result > b {
        display: inline-flex;
        flex: 0 0 auto;
        align-items: center;
        gap: 0.25rem;
        padding-inline-start: var(--space-3, 0.75rem);
        border-inline-start: 1px solid rgb(255 255 255 / 0.24);
        font-size: 0.72rem;
        white-space: nowrap;
    }
}

@media (max-width: 600px) {
    .vipad-calc__modes {
        grid-template-columns: 1fr;
    }

    .vipad-calc__modes button {
        min-height: 3.75rem;
        justify-content: flex-start;
    }

    .vipad-calc__notice {
        align-items: flex-start;
        flex-direction: column;
    }

    .vipad-calc__summary strong {
        font-size: 0.8rem;
    }

    .vipad-calc__detail,
    .vipad-calc__form {
        padding: var(--space-3, 0.75rem);
    }

    .vipad-calc__hero-result {
        padding: var(--space-4, 1rem);
    }

    .vipad-calc__options > summary {
        align-items: flex-start;
        flex-direction: column;
    }

    .vipad-calc__options > summary::after {
        align-self: flex-end;
        margin-block-start: -2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .vipad-calc__result.is-updated .vipad-calc__hero-result,
    .vipad-calc__mobile-result.is-updated,
    .vipad-calc__result-toast.is-visible {
        animation: none;
    }
}

/* ── Password generator ─────────────────────────────────────── */

.password-tool__form {
    display: grid;
    gap: var(--space-4, 1rem);
}

.password-tool__intro {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.92rem;
    line-height: 1.8;
}

.password-tool__types {
    margin: 0;
    padding: 0;
    border: 0;
    min-width: 0;
}

.password-tool__types legend {
    margin-block-end: var(--space-2, 0.5rem);
    font-size: 0.92rem;
    font-weight: 700;
}

.password-tool__type-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2, 0.5rem);
}

.password-tool__type {
    display: grid;
    gap: 0.15rem;
    min-width: 0;
    padding: var(--space-3, 0.75rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.password-tool__type input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.password-tool__type strong {
    font-size: 0.95rem;
}

.password-tool__type small {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.75rem;
    line-height: 1.5;
}

.password-tool__type.is-active {
    border-color: var(--color-primary, #2563eb);
    background: color-mix(in srgb, var(--color-primary, #2563eb) 8%, var(--color-bg, #fff));
}

.password-tool__length {
    display: grid;
    gap: var(--space-2, 0.5rem);
}

.password-tool__length-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3, 0.75rem);
}

.password-tool__length-head label {
    font-size: 0.92rem;
    font-weight: 700;
}

.password-tool__length-head output {
    min-width: 2rem;
    color: var(--color-primary, #2563eb);
    font-size: 1.1rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    text-align: end;
}

.password-tool__length input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary, #2563eb);
}

.password-tool__length-presets {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.password-tool__length-presets button {
    min-width: 2.75rem;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: 999px;
    background: var(--color-bg, #fff);
    color: var(--color-text, #111827);
    font: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.password-tool__length-presets button.is-active {
    border-color: var(--color-primary, #2563eb);
    color: var(--color-primary, #2563eb);
    background: color-mix(in srgb, var(--color-primary, #2563eb) 8%, var(--color-bg, #fff));
    font-weight: 700;
}

.password-tool__result {
    display: grid;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-4, 1rem);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--color-bg-muted, #f3f4f6);
}

.password-tool__password {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-bg, #fff);
    color: var(--color-text, #111827);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: clamp(1rem, 3.5vw, 1.25rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
    overflow-wrap: anywhere;
}

.password-tool__strength {
    margin: 0;
    color: var(--color-text-muted, #6b7280);
    font-size: 0.82rem;
    line-height: 1.7;
    text-align: center;
}

.password-tool__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2, 0.5rem);
}

.password-tool__actions .btn--primary,
.password-tool__actions .btn--ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    min-height: 2.75rem;
    flex: 1 1 10rem;
}

@media (min-width: 640px) {
    .password-tool__type-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* --- Percentage calculator (percentage-calculator) ---------------------- */

.pct-calc__banner {
    margin-block-end: var(--space-4, 1rem);
    padding: var(--space-4, 1rem) var(--space-5, 1.25rem);
    border-radius: var(--radius-lg, 0.75rem);
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--color-primary) 88%, #000 12%),
        color-mix(in srgb, var(--color-primary) 70%, #4c1d95 30%)
    );
    color: #fff;
    text-align: center;
    box-shadow: var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 0.06));
}

.pct-calc__banner p {
    margin: 0;
    font-size: clamp(0.92rem, 2.8vw, 1.02rem);
    line-height: 1.7;
}

.pct-calc__fields {
    display: grid;
    gap: var(--space-4, 1rem);
    margin-block-end: var(--space-4, 1rem);
}

@media (min-width: 640px) {
    .pct-calc__fields {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-items: start;
    }
}

.pct-calc__field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2, 0.5rem);
}

.pct-calc__label {
    font-size: 0.92rem;
    font-weight: var(--font-weight-semibold, 600);
    color: var(--color-text, #1a1a1a);
}

.pct-calc__input,
.pct-calc__output {
    width: 100%;
    min-height: 3rem;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-surface, #fff);
    font-size: clamp(1.05rem, 3.5vw, 1.2rem);
    line-height: 1.4;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.pct-calc__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

.pct-calc__input[aria-invalid="true"] {
    border-color: var(--color-danger, #dc2626);
}

.pct-calc__output {
    display: flex;
    align-items: center;
    margin: 0;
    background: color-mix(in srgb, var(--color-primary) 6%, var(--color-surface, #fff));
    border-color: color-mix(in srgb, var(--color-primary) 24%, var(--color-border, #d1d5db));
    color: var(--color-text-muted, #6b7280);
    font-weight: var(--font-weight-bold, 700);
}

.pct-calc__output.has-value {
    color: var(--color-primary);
    font-size: clamp(1.15rem, 4vw, 1.35rem);
}

.pct-calc__hint {
    color: var(--color-text-muted, #6b7280);
    font-size: 0.78rem;
}

.pct-calc__quick {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    margin-block-end: var(--space-5, 1.25rem);
}

.pct-calc__quick-label {
    font-size: 0.85rem;
    color: var(--color-text-muted, #6b7280);
    flex: 0 0 auto;
}

.pct-calc__quick-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.pct-calc__chip {
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: 999px;
    background: var(--color-surface, #fff);
    color: var(--color-text, #1a1a1a);
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    cursor: pointer;
    min-height: 2.25rem;
    transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.pct-calc__chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface, #fff));
}

.pct-calc__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3, 0.75rem);
    margin-block-end: var(--space-4, 1rem);
}

.pct-calc__submit,
.pct-calc__reset {
    flex: 1 1 9rem;
    min-height: 2.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
}

.pct-calc__error {
    margin: 0 0 var(--space-4, 1rem);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-md, 0.5rem);
    background: color-mix(in srgb, var(--color-danger, #dc2626) 10%, #fff);
    color: var(--color-danger, #dc2626);
    font-size: 0.92rem;
}

.pct-calc__equation-wrap {
    position: relative;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--color-surface-muted, #f3f4f6);
    padding: var(--space-5, 1.25rem) var(--space-4, 1rem) var(--space-4, 1rem);
    transition: box-shadow 220ms ease;
}

.pct-calc__equation-wrap.is-updated {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.pct-calc__equation-tab {
    position: absolute;
    inset-inline-end: var(--space-4, 1rem);
    top: 0;
    transform: translateY(-50%);
    background: var(--color-text, #374151);
    color: #fff;
    font-size: 0.78rem;
    font-weight: var(--font-weight-semibold, 600);
    padding: 0.2rem 0.65rem;
    border-radius: var(--radius-sm, 0.375rem);
}

.pct-calc__equation-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3, 0.75rem);
    text-align: center;
}

.pct-calc__equation {
    margin: 0;
    font-size: clamp(1.05rem, 3.8vw, 1.25rem);
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-primary);
    line-height: 1.8;
}

.pct-calc__copy {
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--color-surface, #fff);
    color: var(--color-text, #1a1a1a);
    padding: 0.45rem 0.85rem;
    font-size: 0.88rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 2.35rem;
}

.pct-calc__copy.is-copied {
    border-color: var(--color-success, #16a34a);
    color: var(--color-success, #16a34a);
}