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

:root {
    /* GenAI-inspired Color Palette */
    --genai-black: #0a0a0a;
    --genai-dark: #1a1a2e;
    --genai-primary: #6366f1;
    --genai-secondary: #3b82f6;
    --genai-accent: #8b5cf6;
    --genai-text: #d1d5db;
    --genai-text-bright: #ffffff;
    --genai-card-bg: rgba(26, 26, 46, 0.8);
    --genai-border: rgba(99, 102, 241, 0.3);
    --genai-hover: rgba(99, 102, 241, 0.1);
    --genai-gradient: linear-gradient(135deg, var(--genai-dark) 0%, rgba(99, 102, 241, 0.1) 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Layout */
    --max-width: 1200px;
    --border-radius: 8px;
    --box-shadow: 0 4px 20px rgba(99, 102, 241, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-primary);
    background: var(--genai-black);
    color: var(--genai-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Matrix Background Animation */
.matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
        var(--genai-black);
    animation: genaiPulse 20s ease-in-out infinite;
}

@keyframes genaiPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--genai-text-bright);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(90deg, var(--genai-primary), var(--genai-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

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

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--genai-primary);
    margin: 0;
    font-family: var(--font-mono);
}

.nav-brand h1 a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.nav-brand h1 a:hover {
    opacity: 0.8;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--genai-text);
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

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

.nav-menu a:hover {
    color: var(--genai-primary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--genai-primary);
    transition: var(--transition);
}

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

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

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

/* Hero Section */
.hero {
    padding: 120px 0 var(--spacing-xxl);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.accent {
    background: linear-gradient(90deg, var(--genai-primary), var(--genai-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.hero-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--genai-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--genai-secondary);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--genai-primary);
    border: 2px solid var(--genai-primary);
}

.btn-secondary:hover {
    background: var(--genai-primary);
    color: white;
    transform: translateY(-2px);
}

/* GenAI Pillars */
.genai-pillars {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.pillar {
    background: var(--genai-card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--genai-border);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
    border-color: var(--genai-primary);
}

.pillar-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.pillar h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

/* Decision Tree */
.decision-tree {
    padding: var(--spacing-xxl) 0;
}

.decision-flow {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.decision-node {
    display: none;
    background: var(--genai-card-bg);
    border: 2px solid var(--genai-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.decision-node.active {
    display: block;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.node-content h3 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.options {
    display: grid;
    gap: var(--spacing-md);
}

.option-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--genai-card-bg);
    border: 2px solid var(--genai-border);
    border-radius: var(--border-radius);
    color: var(--genai-text-bright);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.option-btn:hover {
    border-color: var(--genai-primary);
    background: var(--genai-hover);
    transform: translateY(-2px);
}

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

.option-btn strong {
    display: block;
    margin-bottom: 4px;
    color: var(--genai-text-bright);
}

.back-btn {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--genai-border);
    border-radius: var(--border-radius);
    color: var(--genai-text);
    cursor: pointer;
    transition: var(--transition);
}

.back-btn:hover {
    border-color: var(--genai-primary);
    color: var(--genai-primary);
}

/* Results Section */
.results-section {
    display: none;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--genai-card-bg);
    border-radius: var(--border-radius);
    border: 2px solid var(--genai-primary);
}

.results-section.active {
    display: block;
    animation: slideIn 0.5s ease-out;
}

.result-title {
    color: var(--genai-primary);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.result-services {
    display: grid;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.result-service {
    padding: var(--spacing-md);
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--border-radius);
    border: 1px solid var(--genai-border);
}

.result-service h4 {
    color: var(--genai-primary);
    margin-bottom: var(--spacing-sm);
}

/* Services Section */
.services {
    padding: var(--spacing-xxl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--genai-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--genai-border);
    transition: var(--transition);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
    border-color: var(--genai-primary);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
}

.service-features {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.service-features li {
    padding: 4px 0;
    color: var(--genai-text);
}

.service-features li::before {
    content: '✓';
    color: var(--genai-primary);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.tag {
    padding: 4px 8px;
    background: rgba(99, 102, 241, 0.2);
    color: var(--genai-primary);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.service-link {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--genai-primary);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
}

.service-link:hover {
    background: var(--genai-secondary);
    transform: translateY(-1px);
}

/* Best Practices Section */
.best-practices {
    padding: var(--spacing-xxl) 0;
    background: rgba(99, 102, 241, 0.02);
}

.practices-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.practice-card {
    background: var(--genai-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--genai-border);
    transition: var(--transition);
}

.practice-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
}

.practice-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.practice-card h3 {
    margin-bottom: var(--spacing-md);
}

.practice-details {
    color: var(--genai-text);
}

.practice-details strong {
    color: var(--genai-text-bright);
}

.practice-details ul {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.practice-details li {
    margin-bottom: var(--spacing-xs);
}

.practice-details li::before {
    content: '→';
    color: var(--genai-primary);
    font-weight: bold;
    margin-right: var(--spacing-xs);
    margin-left: -var(--spacing-md);
}

/* Resources Section */
.resources {
    padding: var(--spacing-xxl) 0;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.resource-card {
    background: var(--genai-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--genai-border);
    transition: var(--transition);
}

.resource-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
}

.resource-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.resource-card h3 {
    margin-bottom: var(--spacing-sm);
}

.resource-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.resource-link {
    color: var(--genai-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: var(--spacing-xs) 0;
}

.resource-link:hover {
    color: var(--genai-accent);
    transform: translateX(4px);
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--genai-border);
    text-align: center;
    color: var(--genai-text);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

    .section-title {
        font-size: 2rem;
    }

    .services-grid,
    .practices-container,
    .resources-grid {
        grid-template-columns: 1fr;
    }

    .genai-pillars {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: 100px 0 var(--spacing-lg);
    }

    .hero-title {
        font-size: 2rem;
    }

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--genai-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--genai-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--genai-secondary);
}

/* Selection Styling */
::selection {
    background: var(--genai-primary);
    color: white;
}

/* Focus Styles */
*:focus {
    outline: 2px solid var(--genai-primary);
    outline-offset: 2px;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--genai-primary);
}

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

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

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

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--genai-primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}