:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --bg: #0a0c10;
    --bg-alt: #11141b;
    --surface: #161b22;
    --surface-border: #30363d;
    --text: #e6edf3;
    --text-dim: #8b949e;
    --success: #238636;
    --danger: #da3633;
    --warning: #d29922;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #3b82f6, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 12, 16, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--surface-border);
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(10, 12, 16, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
}

.logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

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

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

.github-link {
    background: var(--surface);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--surface-border);
}

.github-link:hover {
    background: var(--surface-border);
    color: var(--text);
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

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

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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.logo-wrapper {
    position: relative;
    z-index: 1;
}

.hero-logo {
    width: 100%;
    max-width: 320px;
    filter: drop-shadow(0 0 30px var(--primary-glow));
    animation: float 6s ease-in-out infinite;
}

.glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    z-index: -1;
    opacity: 0.3;
}

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

/* Sections */
.section {
    padding: 100px 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

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

/* Grid System */
.grid {
    display: grid;
    gap: 24px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Cards */
.card {
    background: var(--surface);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--surface-border);
    transition: var(--transition);
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    background: rgba(59, 130, 246, 0.03);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 12px;
}

.card p {
    color: var(--text-dim);
    font-size: 0.95rem;
}

/* Feature Cards */
.feature-card {
    padding: 24px;
    border-radius: 12px;
    background: var(--bg);
    border: 1px solid var(--surface-border);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--primary);
    background: var(--surface);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.feature-card h4 {
    margin-bottom: 8px;
}

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

/* Protocol Section */
.protocol-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    background: var(--surface);
    border-radius: 20px;
    border: 1px solid var(--surface-border);
    overflow: hidden;
}

.protocol-sidebar {
    background: rgba(0, 0, 0, 0.2);
    padding: 24px;
    border-right: 1px solid var(--surface-border);
}

.protocol-tab {
    display: block;
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: var(--font-main);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 8px;
}

.protocol-tab:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.protocol-tab.active {
    background: var(--primary);
    color: white;
}

.protocol-content {
    padding: 40px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

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

.tab-pane h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.tab-pane p {
    color: var(--text-dim);
    margin-bottom: 24px;
}

.info-box {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary);
    padding: 16px 20px;
    border-radius: 4px 12px 12px 4px;
    color: var(--text);
    font-size: 0.95rem;
}

.table-wrapper {
    overflow-x: auto;
    margin: 24px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    text-align: left;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border-bottom: 2px solid var(--surface-border);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--surface-border);
    color: var(--text-dim);
}

code {
    font-family: var(--font-mono);
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    color: #60a5fa;
}

.protocol-list {
    list-style: none;
}

.protocol-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 16px;
    color: var(--text-dim);
}

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

/* Setup Section */
.setup-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.setup-card {
    position: relative;
    padding: 40px 32px;
    background: var(--surface);
    border-radius: 20px;
    border: 1px solid var(--surface-border);
}

.setup-number {
    position: absolute;
    top: -20px;
    left: 32px;
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-weight: 800;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.setup-card h4 {
    margin-bottom: 16px;
    font-size: 1.25rem;
}

.setup-card p {
    color: var(--text-dim);
    margin-bottom: 20px;
}

/* Code Blocks */
.code-block {
    background: #010409;
    border: 1px solid var(--surface-border);
    border-radius: 8px;
    padding: 16px;
    position: relative;
    overflow: hidden;
}

.code-block code {
    display: block;
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 0.85rem;
    line-height: 1.5;
    color: #79c0ff;
    background: transparent;
    padding: 0;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--surface);
    border: 1px solid var(--surface-border);
    color: var(--text-dim);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.code-block:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    background: var(--surface-border);
    color: var(--text);
}

/* Documentation */
.doc-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

.terminal-window {
    background: #0d1117;
    border-radius: 12px;
    border: 1px solid var(--surface-border);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: #161b22;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--surface-border);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red { background: #ff5f56; }
.yellow { background: #ffbd2e; }
.green { background: #27c93f; }

.terminal-title {
    margin-left: 8px;
    font-size: 0.8rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}

.terminal-body {
    padding: 24px;
}

.terminal-body pre {
    margin: 0;
}

.terminal-body code {
    background: transparent;
    padding: 0;
    color: #d1d5db;
    font-size: 0.9rem;
}

.example-box {
    background: var(--surface);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--surface-border);
    margin-bottom: 24px;
}

.example-box h5 {
    margin-bottom: 12px;
    color: var(--primary);
}

/* Footer */
.footer {
    background: var(--bg-alt);
    padding: 80px 0 40px;
    border-top: 1px solid var(--surface-border);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
    gap: 40px;
}

.footer-brand {
    max-width: 400px;
}

.footer-brand p {
    color: var(--text-dim);
    margin-top: 16px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.link-group h6 {
    color: var(--text);
    margin-bottom: 20px;
    font-size: 1rem;
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: 12px;
}

.link-group a {
    text-decoration: none;
    color: var(--text-dim);
    transition: var(--transition);
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.disclaimer-mini {
    font-size: 0.8rem;
    max-width: 400px;
    text-align: right;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero h1 { font-size: 3rem; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .setup-grid { grid-template-columns: 1fr; }
    .doc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-description { margin: 0 auto 40px; }
    .hero-buttons { justify-content: center; }
    .nav-toggle { display: flex; }
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 24px;
    }
    .nav-menu.active { display: flex; }
    .nav-menu .nav-link { font-size: 1.5rem; }
    .protocol-container { grid-template-columns: 1fr; }
    .protocol-sidebar { border-right: none; border-bottom: 1px solid var(--surface-border); display: flex; overflow-x: auto; gap: 8px; }
    .protocol-tab { white-space: nowrap; width: auto; margin-bottom: 0; }
    .footer-top { flex-direction: column; }
    .footer-links { gap: 40px; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 20px; }
    .disclaimer-mini { text-align: center; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2.5rem; }
    .grid-4, .grid-3 { grid-template-columns: 1fr; }
    .section-title { font-size: 2rem; }
}