/**
 * myZentro World Clock - Premium Dark Theme
 * Version: 1.0.0
 * Colors: Espresso / Gold / Cream
 */

:root {
    /* Brand Colors - DO NOT CHANGE */
    --bg-primary: #1B1A17;
    --bg-secondary: #242320;
    --bg-elevated: #2D2B28;
    --accent-gold: #D4A017;
    --accent-gold-light: #E4B839;
    --accent-gold-dark: #B38915;
    --text-primary: #F5E9DA;
    --text-muted: #BFAE8A;
    --text-secondary: #8B7D66;
    --border-color: #3A3733;
    --success-color: #8BC34A;
    --warning-color: #FFC107;
    --error-color: #F44336;
    --overlay-dark: rgba(27, 26, 23, 0.9);
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-gold: 0 0 20px rgba(212, 160, 23, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset & Base Styles */
.myzentro-container *,
.myzentro-container *::before,
.myzentro-container *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.myzentro-container {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 500px;
    line-height: 1.6;
    position: relative;
}

.myzentro-loading {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    gap: var(--spacing-lg);
    color: var(--text-muted);
}

.myzentro-spinner {
    animation: myzentro-spin 2s linear infinite;
}

@keyframes myzentro-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Typography */
.myzentro-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.myzentro-subtitle {
    font-family: var(--font-body);
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
}

.myzentro-heading {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    font-weight: 500;
}

.myzentro-section-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--accent-gold);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

/* Layout Components */
.myzentro-header {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.myzentro-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .myzentro-main {
        grid-template-columns: 2fr 1fr;
    }
}

.myzentro-sidebar {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.myzentro-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.myzentro-card:hover {
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.myzentro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.myzentro-card:hover::before {
    opacity: 1;
}

/* World Clock Styles */
.myzentro-clocks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.myzentro-clock-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    position: relative;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.myzentro-clock-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.myzentro-clock-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.myzentro-city {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.myzentro-timezone {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Consolas', monospace;
}

.myzentro-time-display {
    font-size: 3rem;
    font-weight: 300;
    color: var(--accent-gold);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    font-variant-numeric: tabular-nums;
}

.myzentro-date-display {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.myzentro-daynight {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.myzentro-daynight-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-gold);
    animation: myzentro-pulse 2s ease-in-out infinite;
}

.myzentro-daynight-indicator.night {
    background: #4A5568;
    animation: none;
}

@keyframes myzentro-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.myzentro-sun-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Time Zone Converter */
.myzentro-converter {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.myzentro-converter-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .myzentro-converter-grid {
        grid-template-columns: 1fr auto 1fr;
    }
}

.myzentro-convert-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    font-size: 1.5rem;
}

.myzentro-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.myzentro-input-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.myzentro-input {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: all var(--transition-fast);
}

.myzentro-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
}

.myzentro-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23D4A017' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
    padding-right: 3rem;
}

/* Meeting Scheduler */
.myzentro-scheduler {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.myzentro-participants {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.myzentro-participant-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.myzentro-participant-card:hover {
    border-color: var(--accent-gold);
}

.myzentro-participant-name {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.myzentro-participant-time {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.myzentro-suggestions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.myzentro-suggestion-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.myzentro-suggestion-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.myzentro-suggestion-card.selected {
    border-color: var(--accent-gold);
    background: rgba(212, 160, 23, 0.05);
}

.myzentro-suggestion-time {
    font-size: 1.5rem;
    color: var(--accent-gold);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.myzentro-suggestion-converted {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Controls & Buttons */
.myzentro-button {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.myzentro-button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
}

.myzentro-button:active {
    transform: translateY(0);
}

.myzentro-button-secondary {
    background: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--accent-gold);
}

.myzentro-button-secondary:hover {
    background: rgba(212, 160, 23, 0.1);
}

.myzentro-button-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.myzentro-button-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Timeline & Slider */
.myzentro-timeline {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.myzentro-timeline-slider {
    width: 100%;
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin: var(--spacing-lg) 0;
}

.myzentro-timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-gold);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.myzentro-timeline-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-gold);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.myzentro-timeline-marks {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Search & Autocomplete */
.myzentro-search {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.myzentro-search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 3rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
}

.myzentro-search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.myzentro-autocomplete {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.myzentro-autocomplete.show {
    display: block;
}

.myzentro-autocomplete-item {
    padding: var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.myzentro-autocomplete-item:hover {
    background: var(--bg-secondary);
}

/* Utility Classes */
.myzentro-hidden {
    display: none !important;
}

.myzentro-flex {
    display: flex;
}

.myzentro-flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.myzentro-flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.myzentro-gap-sm {
    gap: var(--spacing-sm);
}

.myzentro-gap-md {
    gap: var(--spacing-md);
}

.myzentro-gap-lg {
    gap: var(--spacing-lg);
}

.myzentro-mt-sm {
    margin-top: var(--spacing-sm);
}

.myzentro-mt-md {
    margin-top: var(--spacing-md);
}

.myzentro-mt-lg {
    margin-top: var(--spacing-lg);
}

.myzentro-mb-sm {
    margin-bottom: var(--spacing-sm);
}

.myzentro-mb-md {
    margin-bottom: var(--spacing-md);
}

.myzentro-mb-lg {
    margin-bottom: var(--spacing-lg);
}

.myzentro-text-center {
    text-align: center;
}

.myzentro-text-muted {
    color: var(--text-muted);
}

.myzentro-text-gold {
    color: var(--accent-gold);
}

/* Responsive Design */
@media (max-width: 768px) {
    .myzentro-header {
        padding: var(--spacing-lg);
    }
    
    .myzentro-main {
        padding: var(--spacing-lg);
        grid-template-columns: 1fr;
    }
    
    .myzentro-clocks-grid {
        grid-template-columns: 1fr;
    }
    
    .myzentro-time-display {
        font-size: 2.5rem;
    }
    
    .myzentro-title {
        font-size: 2rem;
    }
}

/* Print Styles */
@media print {
    .myzentro-button,
    .myzentro-search,
    .myzentro-timeline-slider {
        display: none !important;
    }
    
    .myzentro-container {
        background: white !important;
        color: black !important;
    }
    
    .myzentro-clock-card {
        break-inside: avoid;
        border: 1px solid #ddd !important;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .myzentro-container *,
    .myzentro-container *::before,
    .myzentro-container *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
.myzentro-input:focus-visible,
.myzentro-button:focus-visible,
.myzentro-timeline-slider:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --text-primary: #FFFFFF;
        --accent-gold: #FFD700;
    }
}

/* SEO Content (Hidden from UI but accessible to search engines) */
.myzentro-seo-content {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.myzentro-seo-content:not(:focus):not(:active) {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.myzentro-seo-content h1,
.myzentro-seo-content h2,
.myzentro-seo-content h3 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin: 1em 0 0.5em;
}

.myzentro-seo-content p {
    margin-bottom: 1em;
    line-height: 1.6;
}

.myzentro-faq {
    margin: 2em 0;
    border-top: 1px solid var(--border-color);
    padding-top: 1em;
}

.myzentro-faq-item {
    margin-bottom: 1.5em;
}

.myzentro-faq-item h3 {
    color: var(--accent-gold);
    font-size: 1.2em;
    margin-bottom: 0.5em;
}

.myzentro-features ul {
    list-style: none;
    padding-left: 0;
}

.myzentro-features li {
    position: relative;
    padding-left: 1.5em;
    margin-bottom: 0.5em;
}

.myzentro-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
}

/* Offline Indicator */
.myzentro-offline {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--error-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    z-index: 9999;
    display: none;
    box-shadow: var(--shadow-lg);
}

.myzentro-offline.show {
    display: block;
    animation: myzentro-slide-in 0.3s ease;
}

@keyframes myzentro-slide-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Service Worker Notification */
.myzentro-sw-notification {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--accent-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    z-index: 9998;
    display: none;
    box-shadow: var(--shadow-lg);
    max-width: 400px;
}

.myzentro-sw-notification.show {
    display: block;
    animation: myzentro-slide-up 0.3s ease;
}

@keyframes myzentro-slide-up {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Custom Scrollbar */
.myzentro-container::-webkit-scrollbar {
    width: 10px;
}

.myzentro-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.myzentro-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

.myzentro-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}

/* Loading Skeletons */
.myzentro-skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 25%,
        var(--bg-elevated) 50%,
        var(--bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: myzentro-skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes myzentro-skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.myzentro-skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.myzentro-skeleton-title {
    height: 2em;
    width: 60%;
}

.myzentro-skeleton-button {
    height: 3em;
    width: 120px;
}