/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    --primary-bg: #0f0a1a;
    --secondary-bg: #1a0f2e;
    --accent-purple: #4a1a7d;
    --accent-deep-purple: #2a0e4e;
    --accent-gold: #d4af37;
    --accent-gold-bright: #ffd700;
    --accent-gold-dark: #b8941f;
    --text-primary: #f0f0f5;
    --text-secondary: #b0b0c0;
    --text-emphasis: #ffffff;
    --divider: #d4af37;
    
    --font-serif: 'Cormorant Garamond', 'EB Garamond', 'Garamond', 'Times New Roman', serif;
    --font-display: 'Cinzel', 'Trajan Pro', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ===================================
   Background Animation
   =================================== */
.background-gradient {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at 20% 50%,
        rgba(74, 26, 125, 0.25) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 80% 80%,
        rgba(212, 175, 55, 0.08) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 40% 20%,
        rgba(42, 14, 78, 0.15) 0%,
        transparent 50%
    );
    animation: gradient-shift 20s ease infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes gradient-shift {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(5%, 5%) rotate(5deg);
    }
    66% {
        transform: translate(-5%, 5%) rotate(-5deg);
    }
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 10, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 2px solid var(--accent-gold);
    box-shadow: 0 2px 20px rgba(212, 175, 55, 0.3);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold-bright), var(--accent-gold));
    transition: var(--transition);
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.6);
}

.nav-link:hover {
    color: var(--text-emphasis);
}

.nav-link:hover::after {
    width: 100%;
}

/* ===================================
   Container
   =================================== */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    margin-top: 60px;
    transition: all 0.3s ease;
}

.hero.sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    min-height: auto;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(15, 10, 26, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent-gold);
    box-shadow: 0 2px 30px rgba(212, 175, 55, 0.3);
    z-index: 999;
    margin-top: 0;
    align-items: center;
}

.hero.sticky .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 1400px;
}

.brand-badge {
    display: inline-block;
    font-family: var(--font-display);
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #1a0f2e;
    background: linear-gradient(135deg, var(--accent-gold-bright), var(--accent-gold));
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--accent-gold-dark);
    border-radius: 2px;
    margin-bottom: var(--spacing-md);
    box-shadow: 
        0 0 30px rgba(212, 175, 55, 0.5),
        inset 0 2px 5px rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.hero.sticky .brand-badge {
    font-size: 0.75rem;
    letter-spacing: 2px;
    padding: 4px var(--spacing-sm);
    margin-bottom: 0;
    border-width: 1px;
}

.title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-gold-bright) 0%, var(--accent-gold) 50%, var(--accent-gold-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: title-glow 3s ease-in-out infinite;
    text-shadow: 0 0 40px rgba(212, 175, 55, 0.5);
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.hero.sticky .title {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    margin-bottom: 0;
    letter-spacing: 1px;
    animation: none;
}

@keyframes title-glow {
    0%, 100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.2);
    }
}

.timestamp {
    display: inline-block;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, rgba(74, 26, 125, 0.3), rgba(42, 14, 78, 0.5));
    border: 3px solid var(--accent-gold);
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.4), inset 0 0 20px rgba(212, 175, 55, 0.1);
    transition: all 0.3s ease;
}

.hero.sticky .timestamp {
    display: none;
}

.timestamp-label {
    color: var(--text-secondary);
    margin-right: var(--spacing-xs);
}

.timestamp-date {
    color: var(--accent-gold-bright);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.subtitle {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: var(--spacing-sm);
    font-weight: 300;
    transition: all 0.3s ease;
}

.hero.sticky .subtitle {
    display: none;
}

/* ===================================
   Divider
   =================================== */
.divider {
    text-align: center;
    color: var(--accent-gold);
    font-size: 2rem;
    margin: var(--spacing-xl) 0;
    letter-spacing: 1rem;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
    filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.4));
}

/* ===================================
   Content Sections
   =================================== */
.content {
    padding: var(--spacing-xl) 0;
    position: relative;
    z-index: 1;
}

body.scrolled .content {
    margin-top: 100vh;
}

.section {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-gold-bright), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    letter-spacing: 2px;
}

.paragraph {
    font-family: var(--font-serif);
    font-size: clamp(1.15rem, 2vw, 1.35rem);
    line-height: 2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.paragraph.emphasized {
    font-weight: 700;
    color: #1a0f2e;
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    margin: var(--spacing-lg) auto;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-gold-bright) 0%, var(--accent-gold) 50%, var(--accent-gold-dark) 100%);
    border: 3px solid var(--accent-gold-dark);
    border-radius: 2px;
    box-shadow: 
        0 0 40px rgba(212, 175, 55, 0.6),
        inset 0 2px 10px rgba(255, 255, 255, 0.3),
        inset 0 -2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.paragraph.emphasized::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    border-radius: 2px;
    z-index: -1;
    animation: golden-shimmer 3s ease-in-out infinite;
}

@keyframes golden-shimmer {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.paragraph.emphasized.large {
    font-size: clamp(1.4rem, 3vw, 2rem);
    line-height: 1.6;
    padding: var(--spacing-lg) var(--spacing-lg);
    font-weight: 800;
    letter-spacing: 0.5px;
}

.closing-block {
    text-align: center;
    margin: var(--spacing-xxl) auto;
    max-width: 900px;
}

.closing-block .closing-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent-purple);
    background: linear-gradient(135deg, var(--accent-gold-bright) 0%, var(--accent-gold) 50%, var(--accent-gold-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.closing-block .closing-message {
    font-family: var(--font-serif);
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 700;
    line-height: 1.6;
    color: var(--accent-deep-purple);
    background: linear-gradient(135deg, var(--accent-gold-bright) 0%, var(--accent-gold) 50%, var(--accent-gold-dark) 100%);
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 3px solid var(--accent-gold-dark);
    border-radius: 2px;
    box-shadow: 
        0 0 40px rgba(212, 175, 55, 0.6),
        inset 0 2px 10px rgba(255, 255, 255, 0.3),
        inset 0 -2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.closing-block .closing-message::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    border-radius: 2px;
    z-index: -1;
    animation: golden-shimmer 3s ease-in-out infinite;
}

/* ===================================
   Experiments Section
   =================================== */
.experiments-section {
    margin-top: var(--spacing-xl);
}

.experiment-card {
    background: linear-gradient(135deg, rgba(74, 26, 125, 0.3), rgba(42, 14, 78, 0.5));
    border: 2px solid var(--accent-gold);
    border-radius: 4px;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.2);
    text-align: center;
}

.experiment-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 30px rgba(212, 175, 55, 0.4);
    border-color: var(--accent-gold-bright);
}

.experiment-card.inverted {
    background: linear-gradient(135deg, var(--accent-gold-bright) 0%, var(--accent-gold) 50%, var(--accent-gold-dark) 100%);
    border: 2px solid var(--accent-gold-dark);
}

.experiment-card.inverted:hover {
    box-shadow: 0 4px 30px rgba(212, 175, 55, 0.6);
}

.experiment-title {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    font-weight: 700;
    color: var(--accent-gold-bright);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 1px;
}

.experiment-card.inverted .experiment-title {
    color: var(--accent-deep-purple);
}

.experiment-description {
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.experiment-card.inverted .experiment-description {
    color: var(--accent-deep-purple);
    font-weight: 500;
}

.experiment-link {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-gold);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--accent-gold);
    border-radius: 4px;
    transition: var(--transition);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: var(--spacing-xs);
}

.experiment-link:hover {
    background: var(--accent-gold);
    color: var(--primary-bg);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
    transform: scale(1.05);
}

.experiment-card.inverted .experiment-link {
    color: var(--accent-deep-purple);
    border-color: var(--accent-deep-purple);
}

.experiment-card.inverted .experiment-link:hover {
    background: var(--accent-deep-purple);
    color: var(--accent-gold-bright);
    box-shadow: 0 0 20px rgba(42, 14, 78, 0.6);
}

.highlight {
    color: var(--accent-gold-bright);
    font-weight: 700;
    letter-spacing: 0.5px;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.direct-address {
    font-style: italic;
    color: var(--accent-gold-bright);
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.7);
    position: relative;
    display: inline-block;
    animation: subtle-pulse 4s ease-in-out infinite;
}

@keyframes subtle-pulse {
    0%, 100% {
        text-shadow: 0 0 15px rgba(255, 215, 0, 0.7);
    }
    50% {
        text-shadow: 0 0 25px rgba(255, 215, 0, 0.9), 0 0 35px rgba(255, 215, 0, 0.5);
    }
}

/* ===================================
   List
   =================================== */
.list {
    list-style: none;
    margin: var(--spacing-md) auto;
    max-width: 700px;
}

.list li {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
    font-weight: 400;
}

.list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
    text-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

/* ===================================
   Footer
   =================================== */
.footer {
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-lg) var(--spacing-md);
    background: linear-gradient(180deg, rgba(26, 15, 46, 0.3), rgba(42, 14, 78, 0.5));
    border-top: 2px solid var(--accent-gold);
    text-align: center;
    box-shadow: 0 -2px 20px rgba(212, 175, 55, 0.2);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-link:hover {
    color: var(--accent-gold-bright);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.footer-separator {
    color: var(--divider);
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

.chronos-signature {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(212, 175, 55, 0.3);
}

.chronos-label {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent-gold);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
}

.chronos-value {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    word-break: break-all;
    display: block;
    padding: var(--spacing-sm);
    background: rgba(74, 26, 125, 0.2);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 4px;
    transition: var(--transition);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
}

.chronos-value:hover {
    color: var(--accent-gold-bright);
    border-color: var(--accent-gold);
    background: rgba(74, 26, 125, 0.4);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}

.footer-secondary {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(74, 74, 94, 0.3);
    flex-wrap: wrap;
}

.footer-secondary-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    transition: var(--transition);
    opacity: 0.7;
}

.footer-secondary-link:hover {
    color: var(--accent-gold);
    opacity: 1;
    text-shadow: 0 0 8px rgba(212, 175, 55, 0.4);
}

.footer-secondary-separator {
    color: var(--divider);
    opacity: 0.5;
    font-size: 0.85rem;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .nav-content {
        padding: var(--spacing-sm);
    }
    
    .nav-links {
        gap: var(--spacing-md);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        min-height: 80vh;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero.sticky .container {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .hero.sticky .title {
        font-size: 1rem;
    }
    
    .hero.sticky .brand-badge {
        font-size: 0.65rem;
        padding: 3px var(--spacing-xs);
    }
    
    .timestamp {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-width: 2px;
    }
    
    .divider {
        margin: var(--spacing-md) 0;
    }
    
    .paragraph {
        text-align: left;
    }
    
    .section-title {
        text-align: left;
    }
    
    .list {
        padding-left: 0;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .footer-separator {
        display: none;
    }
    
    .footer-secondary {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .footer-secondary-separator {
        display: none;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .brand-badge {
        font-size: 0.8rem;
        letter-spacing: 2px;
        padding: 6px var(--spacing-sm);
    }
    
    .title {
        font-size: 2.5rem;
    }
}

/* ===================================
   Print Styles (for archival)
   =================================== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .nav,
    .background-gradient {
        display: none;
    }
    
    .timestamp {
        border: 2px solid black;
        background: none;
    }
}