:root {
    /* Dark Theme (Default) */
    --bg-page: #050505;
    --text-primary: #ffffff;
    --text-secondary: #a1a1a6;
    --accent-color: #ffffff;
    --accent-glow: rgba(255, 255, 255, 0.15);
    --glass-surface: rgba(255, 255, 255, 0.03);
    --surface-border: rgba(255, 255, 255, 0.08);
    --surface-hover: rgba(255, 255, 255, 0.06);
    
    --font-outfit: 'Outfit', -apple-system, sans-serif;
    --nav-height: 72px;
}

body.light-theme {
    /* Light Theme Overrides */
    --bg-page: #fbfbfd;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent-color: #0071e3;
    --accent-glow: rgba(0, 113, 227, 0.15);
    --glass-surface: rgba(0, 0, 0, 0.02);
    --surface-border: rgba(0, 0, 0, 0.1);
    --surface-hover: rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-outfit);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* --- Background --- */
body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-outfit);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
}

.logo img {
    width: 24px;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo span.brand span { color: var(--text-secondary); font-weight: 400; }

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

#theme-toggle {
    background: var(--glass-surface);
    border: 1px solid var(--surface-border);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

#theme-toggle:hover {
    background: var(--surface-hover);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.btn-github {
    background: var(--text-primary);
    color: var(--bg-page) !important;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600 !important;
}

/* --- Hero --- */
.hero {
    padding-top: calc(var(--nav-height) + 80px);
    padding-bottom: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero-content h1 {
    font-size: 84px;
    font-weight: 700;
    letter-spacing: -3px;
    line-height: 0.95;
    margin-bottom: 24px;
}

.hero-content h1 span {
    color: var(--accent-color);
    text-shadow: 0 0 40px var(--accent-glow);
}

.hero-sub {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-page);
    padding: 14px 28px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 10px 30px var(--accent-glow);
    transition: transform 0.2s;
}

.btn-primary:hover { transform: translateY(-2px); }

.shortcut-pill {
    background: var(--glass-surface);
    border: 1px solid var(--surface-border);
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-family: monospace;
    color: var(--accent-color);
}

/* --- Palette Preview (Hero) --- */
.hero-visual {
    margin-top: 80px;
    width: 100%;
    max-width: 800px;
    perspective: 1000px;
}

.palette-preview {
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, var(--surface-border), transparent);
    transform: rotateX(10deg);
    box-shadow: 0 40px 80px rgba(0,0,0,0.5);
    transition: transform 0.5s ease;
}

.palette-preview:hover { transform: rotateX(5deg) scale(1.02); }

.glass {
    background: var(--glass-surface);
    backdrop-filter: blur(40px);
    border: 1px solid var(--surface-border);
}

.palette-header {
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--surface-border);
}

.palette-header .prompt { color: var(--accent-color); font-size: 24px; font-weight: 600; }
.palette-header input { 
    background: transparent; border: none; font-size: 20px; color: var(--text-primary); outline: none; flex: 1; 
}

.palette-results { padding: 12px; text-align: left; }
.res-item { 
    display: flex; align-items: center; gap: 16px; padding: 12px 20px; border-radius: 12px; transition: background 0.2s; 
}
.res-item.active { background: var(--surface-hover); border: 1px solid var(--surface-border); }
.res-item .icon { font-size: 24px; }
.res-item .res-title { display: block; font-weight: 600; font-size: 16px; }
.res-item .res-desc { color: var(--text-secondary); font-size: 13px; }

/* --- Sections --- */
.section { padding: 120px 0; }
.alt-bg { background: rgba(0,0,0,0.2); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

.section-title { font-size: 48px; font-weight: 700; margin-bottom: 15px; text-align: center; }
.section-subtitle { text-align: center; color: var(--text-secondary); font-size: 18px; margin-bottom: 60px; }
.center-text { margin-bottom: 60px; }

/* --- Features Grid --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 40px;
    border-radius: 24px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--surface-hover);
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.f-icon { font-size: 40px; margin-bottom: 24px; }
.feature-card h3 { font-size: 22px; margin-bottom: 15px; }
.feature-card p { color: var(--text-secondary); font-size: 15px; }

/* --- Palette Demo --- */
.palette-demo {
    display: flex;
    align-items: center;
    gap: 80px;
}

.demo-info { flex: 1; }
.demo-info h2 { font-size: 42px; margin-bottom: 20px; }
.demo-info p { font-size: 18px; color: var(--text-secondary); margin-bottom: 30px; }
.demo-list { list-style: none; }
.demo-list li { margin-bottom: 15px; display: flex; align-items: center; gap: 12px; }
.demo-list li::before { content: '→'; color: var(--accent-color); font-weight: bold; }

.demo-interactive-wrap { flex: 1.2; position: relative; }
.demo-interactive { 
    border-radius: 20px; overflow: hidden; min-height: 300px; padding: 20px; 
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.demo-bar { padding: 15px; display: flex; align-items: center; border-bottom: 1px solid var(--surface-border); margin-bottom: 10px; }
.demo-cursor { color: var(--accent-color); font-weight: bold; margin-right: 10px; }
.typing-container { min-height: 24px; font-size: 18px; }

/* --- Docs Layout --- */
.docs-wrapper {
    display: flex;
    min-height: 500px;
    border-radius: 24px;
    overflow: hidden;
}

.docs-sidebar {
    width: 250px;
    padding: 40px 20px;
    background: rgba(128,128,128,0.02);
    border-right: 1px solid var(--surface-border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.doc-link {
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s;
}

.doc-link.active {
    background: var(--accent-color);
    color: var(--bg-page);
    box-shadow: 0 5px 15px var(--accent-glow);
}

.doc-link:hover:not(.active) { background: var(--surface-hover); color: var(--text-primary); }

.docs-content { flex: 1; padding: 60px; }
.doc-section { display: none; }
.doc-section.active { display: block; animation: fadeIn 0.4s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.doc-section h3 { font-size: 28px; margin-bottom: 20px; color: var(--accent-color); }
.doc-list { margin: 20px 0; padding-left: 20px; }
.doc-list li { margin-bottom: 12px; }

/* --- FAQ --- */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.faq-item { padding: 30px; border-radius: 20px; }
.faq-q { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--accent-color); }
.faq-a { color: var(--text-secondary); font-size: 15px; }

/* --- Footer --- */
.footer { padding: 80px 0 40px; border-top: 1px solid var(--surface-border); }
.footer-content { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.footer-logo { display:flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.footer-links { display: flex; gap: 40px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: color 0.3s; }
.footer-links a:hover { color: var(--accent-color); }
.copyright { text-align: center; color: var(--text-secondary); opacity: 0.2; font-size: 12px; }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-content h1 { font-size: 60px; }
    .palette-demo { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
    .feature-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .docs-wrapper { flex-direction: column; }
    .docs-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--glass-border); }
    .hero-content h1 { font-size: 48px; }
}