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

:root {
    --primary-color: #0066ff;
    --secondary-color: #00d4ff;
    --accent-color: #ff6b35;
    --dark-bg: #0a0a0a;
    --darker-bg: #050505;
    --light-bg: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-dark: #333333;
    --gradient-primary: linear-gradient(135deg, #0066ff, #00d4ff);
    --gradient-secondary: linear-gradient(135deg, #ff6b35, #ff8e53);
    --shadow-light: 0 4px 20px rgba(0, 102, 255, 0.1);
    --shadow-heavy: 0 10px 40px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--light-bg);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.nav-logo i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1001;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.1s ease;
}

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.floating-particles::before,
.floating-particles::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-particles::before {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.floating-particles::after {
    top: 60%;
    right: 30%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 1; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 0.5; }
}

.hero-content {
    text-align: center;
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.title-main {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.title-year {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: clamp(3rem, 10vw, 6rem);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 300;
}

.author-info {
    margin-bottom: 3rem;
}

.author-card {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 1.5rem 2rem;
}

.author-details h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.author-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0.2rem 0;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-primary);
    color: var(--text-primary);
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.3);
}

/* Section Styles */
.section {
    padding: 6rem 0;
    position: relative;
}

.dark-section {
    background: var(--dark-bg);
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.dark-section .section-header h2 {
    color: var(--text-primary);
}

.section-line {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.content-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.lead {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.quote {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
    border-left: 4px solid var(--primary-color);
    padding: 2rem;
    margin: 2rem 0;
    border-radius: var(--border-radius);
    font-style: italic;
}

.quote cite {
    display: block;
    margin-top: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Timeline */
.tech-timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: rgba(0, 102, 255, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.timeline-item:hover {
    background: rgba(0, 102, 255, 0.1);
    transform: translateX(10px);
}

.timeline-item.active {
    background: var(--gradient-primary);
    color: white;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    margin-right: 1rem;
    min-width: 80px;
}

.timeline-desc {
    font-size: 1rem;
}

/* Trends Grid */
.trends-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.trend-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.trend-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-heavy);
}

.trend-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.trend-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.trend-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Technology Showcase */
.tech-showcase {
    display: grid;
    gap: 3rem;
}

.tech-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 2rem;
    background: rgba(0, 102, 255, 0.02);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 102, 255, 0.1);
    transition: var(--transition);
}

.tech-item:hover {
    background: rgba(0, 102, 255, 0.05);
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
}

.tech-item:nth-child(even) {
    grid-template-columns: 1fr 1fr;
}

.tech-item:nth-child(even) .tech-image {
    order: 2;
}

.tech-item:nth-child(even) .tech-details {
    order: 1;
}

.tech-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 16/10;
}

.tech-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.tech-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.tech-item:hover .tech-overlay {
    transform: translateY(0);
}

.tech-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tech-details h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.tech-details p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.tech-details ul {
    list-style: none;
}

.tech-details li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.tech-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Convergence Section */
.convergence-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.convergence-diagram {
    position: relative;
    padding: 3rem;
    text-align: center;
}

.convergence-center {
    background: var(--gradient-primary);
    color: white;
    padding: 2rem;
    border-radius: 50%;
    width: 200px;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 3rem;
    box-shadow: var(--shadow-heavy);
}

.convergence-center h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.convergence-factors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.factor {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.factor:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.factor i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.implication-list {
    display: grid;
    gap: 2rem;
}

.implication {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.implication h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.implication p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Regulation Section */
.regulation-content {
    display: grid;
    gap: 4rem;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.challenge-card {
    background: rgba(0, 102, 255, 0.05);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.challenge-card:hover {
    background: rgba(0, 102, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
}

.challenge-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.challenge-card h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.future-points {
    display: grid;
    gap: 2rem;
}

.future-point {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    padding: 2rem;
    background: rgba(0, 102, 255, 0.02);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.future-point:hover {
    background: rgba(0, 102, 255, 0.05);
    transform: translateX(10px);
}

.point-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.point-content h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.point-content p {
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Conclusion Section */
.conclusion-section {
    background: var(--dark-bg);
    color: var(--text-primary);
    padding: 6rem 0;
    text-align: center;
}

.conclusion-content {
    max-width: 800px;
    margin: 0 auto;
}

.conclusion-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.final-quote {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin: 3rem 0;
    font-size: 1.2rem;
    line-height: 1.8;
    font-style: italic;
}

.final-quote cite {
    display: block;
    margin-top: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    font-style: normal;
}

.citation-info {
    margin-top: 4rem;
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
}

.citation-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
}

.citation-details p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.citation-details strong {
    color: var(--text-primary);
}

/* Footer */
.footer {
    background: var(--darker-bg);
    color: var(--text-secondary);
    padding: 2rem 0;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .content-grid,
    .convergence-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tech-item {
        grid-template-columns: 1fr;
    }
    
    .tech-item:nth-child(even) .tech-image {
        order: 1;
    }
    
    .tech-item:nth-child(even) .tech-details {
        order: 2;
    }
    
    .trends-grid {
        grid-template-columns: 1fr;
    }
    
    .challenge-grid {
        grid-template-columns: 1fr;
    }
    
    .convergence-factors {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .future-point {
        flex-direction: column;
        text-align: center;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 0 1rem;
    }
    
    .author-card {
        padding: 1rem 1.5rem;
    }
    
    .tech-item {
        padding: 1rem;
    }
    
    .trend-card,
    .challenge-card {
        padding: 1.5rem;
    }
    
    .convergence-center {
        width: 150px;
        height: 150px;
        padding: 1.5rem;
    }
    
    .convergence-center h3 {
        font-size: 1rem;
    }
}