/* ============================================
   NURAY - Premium Romantic Invitation
   Mobile-First Design System
   ============================================ */

/* CSS Variables */
:root {
    /* Welcome Overlay */
    --overlay-bg: rgba(10, 25, 20, 0.98);
    /* Colors */
    --bg-primary: #0F2C24;
    --bg-secondary: #0a1f19;
    --bg-card: rgba(15, 44, 36, 0.85);
    --text-ivory: #F9F6F0;
    --text-muted: rgba(249, 246, 240, 0.6);
    --gold: #D4AF37;
    --gold-muted: rgba(212, 175, 55, 0.7);
    --gold-glow: rgba(212, 175, 55, 0.3);
    
    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* ============================================
   WELCOME OVERLAY
   ============================================ */

.welcome-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.welcome-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.welcome-content {
    text-align: center;
    padding: var(--spacing-lg);
    max-width: 320px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease forwards;
    animation-delay: 0.2s;
}

.welcome-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--gold);
    opacity: 0.8;
    animation: floatIcon 3s ease-in-out infinite;
}

.welcome-icon svg {
    width: 100%;
    height: 100%;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.welcome-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    color: var(--gold-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.welcome-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 300;
    font-style: italic;
    color: var(--text-ivory);
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.02em;
}

.welcome-btn {
    position: relative;
    display: inline-block;
    padding: 1.1rem 2.5rem;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.welcome-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform var(--transition-medium);
    z-index: -1;
}

.welcome-btn:hover::before,
.welcome-btn:active::before {
    transform: scaleY(1);
}

.welcome-btn:hover,
.welcome-btn:active {
    color: var(--bg-primary);
}

.welcome-btn-glow {
    position: absolute;
    inset: -3px;
    background: var(--gold);
    opacity: 0;
    filter: blur(20px);
    z-index: -2;
    animation: pulseGlow 2.5s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.15; }
    50% { opacity: 0.35; }
}

/* Audio Toggle Button */
.audio-toggle {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1000;
    width: 44px;
    height: 44px;
    background: rgba(15, 44, 36, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--gold-muted);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-medium);
}

.audio-toggle:hover {
    background: rgba(212, 175, 55, 0.15);
    transform: scale(1.05);
}

.audio-toggle:active {
    transform: scale(0.95);
}

.audio-icon {
    width: 20px;
    height: 20px;
    color: var(--gold);
    transition: opacity var(--transition-fast);
}

.audio-icon.audio-on {
    display: none;
}

.audio-toggle.playing .audio-icon.audio-off {
    display: none;
}

.audio-toggle.playing .audio-icon.audio-on {
    display: block;
}

/* ============================================
   SECTION 1: HERO
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(15, 44, 36, 0.3) 0%,
        rgba(15, 44, 36, 0.6) 50%,
        rgba(15, 44, 36, 0.95) 100%
    );
}

.hero-content {
    text-align: center;
    max-width: 340px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1.2s ease forwards;
    animation-delay: 0.3s;
}

.hero-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.35em;
    color: var(--gold);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 10vw, 3.5rem);
    font-weight: 300;
    line-height: 1.15;
    color: var(--text-ivory);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 300;
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

/* Envelope Button */
.envelope-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.envelope-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
    z-index: -1;
}

.envelope-btn:hover::before {
    transform: scaleX(1);
}

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

.envelope-btn:hover .envelope-icon svg {
    color: var(--bg-primary);
}

.envelope-icon {
    width: 28px;
    height: 21px;
}

.envelope-icon svg {
    width: 100%;
    height: 100%;
    transition: color var(--transition-medium);
}

.btn-glow {
    position: absolute;
    inset: -2px;
    background: var(--gold);
    opacity: 0;
    filter: blur(15px);
    z-index: -2;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.25; }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.5s;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { 
        opacity: 0.3;
        transform: scaleY(1);
    }
    50% { 
        opacity: 1;
        transform: scaleY(1.2);
    }
}

/* ============================================
   SECTION 2: DETAILS
   ============================================ */

.details {
    padding: var(--spacing-2xl) var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
}

.details-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--gold-muted);
    padding: var(--spacing-lg);
    opacity: 0;
    transform: translateY(40px);
    transition: all var(--transition-slow);
}

.details-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.card-header h2 {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    color: var(--gold);
    white-space: nowrap;
}

.card-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-muted), transparent);
    max-width: 60px;
}

.details-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--gold);
    opacity: 0.8;
}

.detail-icon svg {
    width: 100%;
    height: 100%;
}

.detail-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold-muted);
}

.detail-value {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-ivory);
    line-height: 1.5;
}

.detail-value em {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.detail-note {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Status Block */
.status-block {
    position: relative;
    background: rgba(10, 31, 25, 0.9);
    border: 1px solid var(--gold-muted);
    padding: var(--spacing-md);
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    transition: all var(--transition-slow);
    transition-delay: 0.2s;
}

.status-block.visible {
    opacity: 1;
    transform: translateY(0);
}

.status-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--gold);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.status-title {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--gold);
}

.status-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.status-locked {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: rgba(212, 175, 55, 0.08);
    border: 1px dashed var(--gold-muted);
}

.lock-icon {
    width: 18px;
    height: 18px;
    color: var(--gold);
}

.lock-icon svg {
    width: 100%;
    height: 100%;
}

.lock-text {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--gold);
}

.countdown-container {
    text-align: center;
}

.countdown-label {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
}

.countdown-value {
    font-family: 'Courier New', monospace;
    font-size: 2rem;
    font-weight: 400;
    color: var(--text-ivory);
    line-height: 1;
}

.countdown-name {
    font-family: var(--font-sans);
    font-size: 0.55rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-top: 4px;
}

.countdown-separator {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 12px;
}

.status-scanline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold-glow), transparent);
    animation: scanline 3s linear infinite;
}

@keyframes scanline {
    0% { transform: translateY(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(150px); opacity: 0; }
}

/* ============================================
   SECTION 3: MOODBOARD
   ============================================ */

.moodboard {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
}

.moodboard-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.mood-item {
    position: relative;
    aspect-ratio: 2/3;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.mood-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.mood-item:nth-child(1) { transition-delay: 0s; }
.mood-item:nth-child(2) { transition-delay: 0.1s; }
.mood-item:nth-child(3) { transition-delay: 0.2s; }
.mood-item:nth-child(4) { transition-delay: 0.3s; }

.mood-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%) contrast(1.05);
    transition: all var(--transition-medium);
}

.mood-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 60%,
        rgba(15, 44, 36, 0.5) 100%
    );
    pointer-events: none;
}

.mood-item:hover img {
    transform: scale(1.05);
    filter: grayscale(0%) contrast(1.1);
}

/* Footer */
.footer {
    text-align: center;
    padding-top: var(--spacing-lg);
}

.footer-text {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.footer-line {
    width: 60px;
    height: 1px;
    background: var(--gold-muted);
    margin: 0 auto;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (min-width: 420px) {
    :root {
        --spacing-lg: 2.5rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .countdown-value {
        font-size: 2.5rem;
    }
    
    .countdown-unit {
        min-width: 60px;
    }
}

@media (min-width: 768px) {
    .hero-content {
        max-width: 500px;
    }
    
    .details {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .moodboard {
        max-width: 600px;
        margin: 0 auto;
    }
}

/* Safe area insets for notched devices */
@supports (padding-top: env(safe-area-inset-top)) {
    .audio-toggle {
        top: calc(var(--spacing-md) + env(safe-area-inset-top));
        right: calc(var(--spacing-md) + env(safe-area-inset-right));
    }
    
    .hero {
        padding-top: calc(var(--spacing-lg) + env(safe-area-inset-top));
    }
    
    .footer {
        padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-content {
        opacity: 1;
        transform: none;
    }
}