.alarm-page {
    position: relative;
    max-width: 960px;
}

.alarm-backdrop {
    position: fixed;
    inset: 0;
    backdrop-filter: blur(4px);
    background: rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.alarm-header .btn,
.alarm-toolbar .btn {
    white-space: nowrap;
}

.alarm-header {
	background-color: #f2e8ff;
	border: 1px solid #e2d4ff;
	border-radius: 16px;
	padding: 1.25rem 1.5rem;
}

.alarm-header .display-5 {
	font-weight: 700;
}

.alarm-guide-text {
    font-size: 1rem;
    line-height: 1.5;
    color: var(--alarm-guide-color, #495057);
}

.alarm-card {
    position: relative;
    max-width: 540px;
    width: 100%;
    z-index: 20;
    background-color: #f5f0ff; /* light purple background */
    border: 1px solid #e6d8ff;
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(125, 85, 185, 0.12);
}

.alarm-card #clock {
    font-family: 'Courier New', Courier, monospace;
    letter-spacing: .05em;
    background-color: #111;
    color: #3efb8f;
    padding: 20px 24px;
    border-radius: 16px;
    border: 3px solid #1f1f1f;
    box-shadow: 0 0 30px rgba(62, 251, 143, 0.3);
    display: inline-flex;
    justify-content: center;
    min-width: 230px;
}

.alarm-form .form-label {
    font-weight: 600;
}

.alarm-form .form-select-lg {
    font-size: 1.4rem;
    text-align: center;
}

.alarm-actions .btn {
    width: 100%;
    padding-block: 0.85rem;
    font-size: 1.2rem;
    font-weight: 700;
}

.btn-alarm-primary {
    background: linear-gradient(135deg, #0cd977, #1ec9ff);
    border: none;
    color: #053b2c;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-alarm-primary:hover,
.btn-alarm-primary:focus {
    background: linear-gradient(135deg, #05c16b, #18b7f0);
    color: #022a1f;
}

#time-remaining {
    font-weight: 600;
    color: #198754;
}

.alarm-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%) translateY(100%);
    background: rgba(33, 37, 41, 0.92);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1050;
    font-weight: 600;
}

.alarm-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.alarm-page--ringing .alarm-backdrop {
    opacity: 1;
}

.alarm-page--ringing .alarm-card {
    border-color: #dc3545;
    box-shadow: 0 0 30px rgba(220, 53, 69, 0.4);
}

.alarm-page--ringing #clock {
    background-color: #dc3545;
    color: #fff;
    border-color: #bd2130;
    box-shadow: 0 0 25px rgba(220, 53, 69, 0.65);
}

.alarm-page--ringing #stop-alarm-btn {
    animation: alarm-shake 0.6s linear infinite;
}

@keyframes alarm-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    50% { transform: translateX(6px); }
    75% { transform: translateX(-3px); }
}

.alarm-page--dark {
    --alarm-guide-color: #ced4da;
    color: #f8f9fa;
}

.alarm-page--dark .card {
    background-color: #1b1f24;
    border-color: #2a2f36;
    color: inherit;
}

.alarm-page--dark .alarm-card #clock {
    background-color: #0b141d;
    border-color: #17212b;
    color: #6affc9;
    box-shadow: 0 0 30px rgba(106, 255, 201, 0.35);
}

.alarm-page--dark .btn-outline-primary,
.alarm-page--dark .btn-outline-secondary {
    color: #f8f9fa;
    border-color: #6c757d;
}

.alarm-page--dark .btn-outline-primary:hover,
.alarm-page--dark .btn-outline-primary:focus,
.alarm-page--dark .btn-outline-secondary:hover,
.alarm-page--dark .btn-outline-secondary:focus {
    background-color: #2a2f36;
    border-color: #f8f9fa;
    color: #f8f9fa;
}

.alarm-page--dark .alarm-description {
    background-color: #11161c;
    border-color: #1f252d;
}

.alarm-page--dark .alarm-toast {
    background: rgba(15, 16, 17, 0.95);
}

.alarm-description {
    border-radius: 18px;
}

.alarm-description .card-body {
    line-height: 1.7;
    font-size: 1.05rem;
}

@media (max-width: 575.98px) {
    .alarm-header .display-5 {
        font-size: 2rem;
    }

    .alarm-card {
        padding: 1.5rem;
    }

    .alarm-card #clock {
        font-size: 2.75rem;
        margin-top: 0.5rem;
    }

    .alarm-toolbar {
        text-align: center;
    }
}

@media (min-width: 768px) {
    .alarm-card {
        margin-top: 1rem;
    }

    .alarm-card #clock {
        margin-left: 0;
    }
}