/* ===================================
   sleepy.help - CSS
   Accessible, responsive, timeless
   =================================== */

/* CSS Variables for theming */
:root {
    /* Colors - Night Theme */
    --color-bg: #0f0f1e;
    --color-bg-card: #1a1a2e;
    --color-bg-elevated: #252541;
    --color-text: #e8e8f0;
    --color-text-dim: #9999b8;
    --color-primary: #6b9fff;
    --color-accent: #ff9d6b;
    --color-good: #6bffb8;
    --color-warning: #ffd66b;
    --color-error: #ff6b9d;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-xxl: 3rem;

    /* Typography */
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;

    /* Borders */
    --radius: 1rem;
    --radius-sm: 0.5rem;

    /* Animations */
    --transition: 0.3s ease;
}

/* Respect user preferences */
@media (prefers-color-scheme: light) {
    :root {
        --color-bg: #f5f5fa;
        --color-bg-card: #ffffff;
        --color-bg-elevated: #fafaff;
        --color-text: #1a1a2e;
        --color-text-dim: #666680;
    }
}

@media (prefers-reduced-motion: reduce) {
    :root {
        --transition: 0s;
    }
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Layout */
#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.tagline {
    color: var(--color-text-dim);
    font-size: 1rem;
    font-weight: 300;
}

/* Main Content */
main {
    flex: 1;
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    main {
        grid-template-columns: 1fr 1fr;
    }
    .clock-container {
        grid-column: 1 / -1;
    }
}

/* Clock Container */
.clock-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

#globe-clock {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 16px rgba(107, 159, 255, 0.2));
}

/* Time Display */
.time-display {
    width: 100%;
    text-align: center;
}

.current-time {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

#current-time-value {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 200;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.time-label {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Cards */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--space-xl);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition);
}

.card:hover {
    transform: translateY(-2px);
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

/* Input Group */
.input-group {
    margin-bottom: var(--space-xl);
}

.input-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--color-text);
}

.input-group input[type="time"] {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    background: var(--color-bg-elevated);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: border-color var(--transition);
}

.input-group input[type="time"]:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input-group small {
    display: block;
    margin-top: var(--space-sm);
    color: var(--color-text-dim);
    font-size: 0.875rem;
}

/* Recommendation */
.recommendation {
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-lg);
}

.bedtime-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.bedtime-display .label {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.bedtime-value {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 300;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.sleep-info {
    text-align: center;
    color: var(--color-text-dim);
    font-size: 0.9rem;
}

.sleep-info strong {
    color: var(--color-text);
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.5rem;
}

.stat[data-status="good"] .stat-value {
    color: var(--color-good);
}

.stat[data-status="warning"] .stat-value {
    color: var(--color-warning);
}

.stat[data-status="error"] .stat-value {
    color: var(--color-error);
}

/* Location */
.location-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

#location-text {
    flex: 1;
    color: var(--color-text-dim);
}

.manual-location {
    margin-top: var(--space-md);
}

.manual-location input {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-body);
    transition: border-color var(--transition);
}

.manual-location input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Buttons */
button {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    font-weight: 500;
}

.btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-bg);
}

.btn-install {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: var(--space-md) var(--space-xl);
    font-weight: 600;
}

.btn-install:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(107, 159, 255, 0.3);
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Footer */
footer {
    margin-top: var(--space-xxl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-bg-elevated);
    text-align: center;
    color: var(--color-text-dim);
}

.footer-links {
    margin-top: var(--space-md);
}

/* Responsive */
@media (max-width: 767px) {
    #app {
        padding: var(--space-md);
    }

    .card {
        padding: var(--space-lg);
    }

    .stats {
        grid-template-columns: 1fr;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-bg: #000000;
        --color-bg-card: #1a1a1a;
        --color-text: #ffffff;
    }
}

/* Error Toast Notifications (Month 1: Error Handling) */
.error-toast {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    max-width: 400px;
    background: var(--color-error);
    color: white;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    animation: slideIn 0.3s ease;
}

.error-toast--hiding {
    animation: slideOut 0.3s ease;
}

.error-toast__content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
}

.error-toast__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.error-toast__message {
    flex: 1;
}

.error-toast__message strong {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.error-toast__message p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

.error-toast__close {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
    transition: background var(--transition);
}

.error-toast__close:hover {
    background: rgba(255, 255, 255, 0.2);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Responsive toast on mobile */
@media (max-width: 767px) {
    .error-toast {
        bottom: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
        max-width: none;
    }
}

/* Toast Notifications (Success, Info, Warning) - Phase 2 */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    max-width: 350px;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    animation: slideIn 0.3s ease;
    font-size: 0.9rem;
}

.toast--success {
    background: var(--color-good);
    color: #0a1a2a;
}

.toast--info {
    background: var(--color-primary);
    color: white;
}

.toast--warning {
    background: var(--color-warning);
    color: #0a1a2a;
}

.toast--hiding {
    animation: slideOut 0.3s ease;
}

@media (max-width: 767px) {
    .toast {
        bottom: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
        max-width: none;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }
    .btn-install,
    footer,
    .error-toast,
    .toast {
        display: none;
    }
}