/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary-color: #10b981;
    --accent-color: #06b6d4;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-light: #6b7280;
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-dark: #000000;
    --border-color: #2a2a2a;
    --glow-blue: rgba(59, 130, 246, 0.5);
    --glow-green: rgba(16, 185, 129, 0.5);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.7);
    --shadow-glow: 0 0 20px var(--glow-blue);
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-accent {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.6), var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

.btn-secondary:hover::before {
    left: 100%;
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0 6rem;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(90deg, rgba(59, 130, 246, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(59, 130, 246, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80vh;
    position: relative;
    z-index: 1;
    gap: 4rem;
}

.hero-content {
    text-align: left;
    max-width: 600px;
    flex: 1;
}

.hero-back-link {
    margin-bottom: 1.5rem;
}

.back-to-enlcloud {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.back-to-enlcloud:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.4);
    color: var(--primary-light);
    transform: translateX(-3px);
}

.back-arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.back-to-enlcloud:hover .back-arrow {
    transform: translateX(-3px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.3));
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.hero-graphic {
    position: relative;
    width: 400px;
    height: 400px;
}

.hero-ai-image {
    width: 300px;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.6));
    animation: float 4s ease-in-out infinite, glow 3s ease-in-out infinite alternate;
    transition: transform 0.3s ease;
}

.hero-ai-image:hover {
    transform: scale(1.05);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes glow {
    0% {
        filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.6));
    }
    100% {
        filter: drop-shadow(0 0 60px rgba(59, 130, 246, 0.9)) drop-shadow(0 0 80px rgba(16, 185, 129, 0.3));
    }
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 3rem;
    align-items: center;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.btn-icon {
    margin-right: 0.5rem;
}

.hero-note {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
}

.feature:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.25rem;
}

.feature-text {
    white-space: nowrap;
}

/* MVC Info Section */
.mvc-info {
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.mvc-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px),
        linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
}

.mvc-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.mvc-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.mvc-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.mvc-features {
    display: grid;
    gap: 2rem;
}

.mvc-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.mvc-feature h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.mvc-feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.mvc-diagram {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.diagram-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(26, 26, 26, 0.6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.diagram-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(59, 130, 246, 0.3);
    border-color: rgba(59, 130, 246, 0.4);
}

.diagram-icon {
    font-size: 2rem;
}

.diagram-label {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.model {
    border-left: 4px solid var(--primary-color);
}

.view {
    border-left: 4px solid var(--secondary-color);
}

.controller {
    border-left: 4px solid var(--accent-color);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.5), transparent);
}

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

.footer-column h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-column p {
    color: #9ca3af;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        min-height: 70vh;
        padding: 2rem 0;
    }

    .hero-content {
        max-width: 100%;
        padding: 0 1rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .hero-features {
        gap: 1rem;
    }

    .feature {
        flex: 1 1 calc(50% - 0.5rem);
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }

    .hero-ai-image {
        width: 180px;
    }

    .hero .container {
        flex-direction: column;
        gap: 2rem;
    }

    .nav-menu {
        display: none;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .roadmap-timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-marker {
        width: 40px;
        height: 40px;
    }
    
    .marker-icon {
        font-size: 1.2rem;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
    
    .roadmap-title {
        font-size: 2rem;
    }
}

/* Roadmap Section */
.roadmap {
    padding: 6rem 0;
    background: var(--bg-primary);
    position: relative;
}

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

.roadmap-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.roadmap-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.roadmap-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 80px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    border: 3px solid var(--border-color);
    transition: all 0.3s ease;
}

.timeline-item.completed .timeline-marker {
    border-color: var(--accent-color);
    background: var(--accent-color);
}

.timeline-item.current .timeline-marker {
    border-color: var(--secondary-color);
    background: var(--secondary-color);
}

.timeline-item.planned .timeline-marker {
    border-color: var(--text-light);
    background: white;
}

.marker-icon {
    font-size: 1.5rem;
}

.timeline-item.completed .marker-icon,
.timeline-item.current .marker-icon {
    color: white;
}

.timeline-item.planned .marker-icon {
    color: var(--text-light);
}

.timeline-content {
    background: rgba(26, 26, 26, 0.6);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg), 0 0 20px rgba(59, 130, 246, 0.2);
}

.timeline-item.completed .timeline-content {
    border-left-color: var(--accent-color);
}

.timeline-item.current .timeline-content {
    border-left-color: var(--secondary-color);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-features {
    list-style: none;
    padding: 0;
}

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

.timeline-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}