:root {
    --bg: #0a0a0c;
    --bg-2: #111114;
    --bg-3: #18181c;
    --border: #252529;
    --text: #f4f4f5;
    --text-2: #a1a1aa;
    --text-3: #71717a;
    --primary: #6366f1;
    --accent: #22d3ee;
    --green: #22c55e;
    --yellow: #facc15;
    --font: 'Inter', system-ui, sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

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

a {
    color: inherit;
    text-decoration: none;
}

code,
pre {
    font-family: var(--mono);
}

h1,
h2,
h3 {
    line-height: 1.2;
    font-weight: 600;
}

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

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 12, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
}

.logo-icon {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-2);
    transition: color 0.15s;
}

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

.nav-btn {
    padding: 8px 16px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.nav-btn:hover {
    border-color: var(--text-3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
    transition: 0.2s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    transition: 0.15s;
}

.btn.primary {
    background: var(--primary);
    color: #fff;
}

.btn.primary:hover {
    opacity: 0.9;
}

.btn.secondary {
    background: var(--bg-3);
    border: 1px solid var(--border);
}

.btn.secondary:hover {
    border-color: var(--text-3);
}

/* Hero */
.hero {
    padding: 120px 20px 60px;
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-content p {
    font-size: 17px;
    color: var(--text-2);
    margin-bottom: 28px;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-demo {
    display: flex;
    justify-content: center;
}

/* Terminal */
.terminal {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    width: 100%;
    max-width: 440px;
}

.terminal-bar {
    display: flex;
    gap: 6px;
    padding: 12px 16px;
    background: var(--bg-3);
    border-bottom: 1px solid var(--border);
}

.terminal-bar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-bar span:nth-child(1) {
    background: #ff5f57;
}

.terminal-bar span:nth-child(2) {
    background: #febc2e;
}

.terminal-bar span:nth-child(3) {
    background: #28c840;
}

.terminal pre {
    padding: 20px;
    font-size: 13px;
    line-height: 1.7;
    overflow-x: auto;
    margin: 0;
}

.hl-yellow {
    color: var(--yellow);
}

.hl-green {
    color: var(--green);
}

.hl-blue {
    color: var(--primary);
    font-weight: 500;
}

.hl-dim {
    color: var(--text-3);
}

/* Sections */
section {
    padding: 80px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

section h2 {
    font-size: 32px;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-2);
    font-size: 17px;
    margin-bottom: 48px;
    max-width: 600px;
}

/* How it works - Flow Diagram */
.how-it-works {
    background: var(--bg);
}

.flow-diagram {
    display: flex;
    gap: 16px;
    align-items: stretch;
    overflow-x: auto;
    padding: 20px 0;
    margin-bottom: 48px;
}

.flow-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
    flex: 1;
}

.flow-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-3);
    margin-bottom: 16px;
    text-align: center;
}

.flow-box {
    padding: 20px 16px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-align: center;
    width: 100%;
    max-width: 160px;
}

.flow-box-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 12px;
    color: var(--text-2);
}

.flow-box-icon svg {
    width: 100%;
    height: 100%;
}

.flow-box-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.flow-box-desc {
    font-size: 12px;
    color: var(--text-3);
}

.flow-box.localhost .flow-box-icon {
    color: var(--accent);
}

.flow-box.client .flow-box-icon {
    color: var(--primary);
}

.flow-box.server .flow-box-icon {
    color: var(--green);
}

.flow-box.public .flow-box-icon {
    color: var(--yellow);
}

.flow-box.users .flow-box-icon {
    color: var(--text-2);
}

.flow-arrow {
    width: 2px;
    height: 24px;
    background: var(--border);
    margin: 8px 0;
    position: relative;
}

.flow-arrow::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: -3px;
    border: 4px solid transparent;
    border-top-color: var(--border);
}

/* Tunnel visualization */
.tunnel-col {
    justify-content: center;
    min-width: 120px;
}

.tunnel {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    padding: 3px;
    border-radius: 50px;
    width: 100%;
    max-width: 140px;
}

.tunnel-inner {
    background: var(--bg);
    border-radius: 50px;
    padding: 16px 12px;
    text-align: center;
}

.tunnel-text {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    display: block;
    margin-bottom: 8px;
}

.tunnel-dots {
    display: flex;
    justify-content: center;
    gap: 6px;
}

.tunnel-dots span {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

.tunnel-dots span:nth-child(2) {
    animation-delay: 0.3s;
}

.tunnel-dots span:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 1;
    }
}

.tunnel-note {
    font-size: 11px;
    color: var(--text-3);
    margin-top: 12px;
    text-align: center;
}

/* Flow Steps */
.flow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.flow-step {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
}

.flow-step strong {
    display: block;
    margin-bottom: 4px;
    font-size: 14px;
}

.flow-step p {
    font-size: 13px;
    color: var(--text-2);
    margin: 0;
}

/* Features */
.features {
    background: var(--bg-2);
    border-radius: 0;
    margin: 0;
    max-width: none;
    padding: 80px 20px;
}

.features h2,
.features .feature-grid {
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.feature {
    padding: 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.feature h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature p {
    font-size: 14px;
    color: var(--text-2);
}

/* Use Cases */
.use-cases {
    background: var(--bg);
}

.cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.case-card {
    display: block;
    padding: 24px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.15s, transform 0.15s;
}

.case-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.case-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.case-card p {
    font-size: 14px;
    color: var(--text-2);
    margin-bottom: 16px;
}

.case-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}

/* Quick Start */
.quickstart {
    background: var(--bg);
}

.qs-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.qs-step {
    padding: 20px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.qs-step h3 {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--text-2);
}

.qs-step pre {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px;
    font-size: 12px;
    overflow-x: auto;
    margin: 0;
}

.qs-step code {
    color: var(--text-2);
}

.qs-note {
    margin-top: 32px;
    font-size: 14px;
    color: var(--text-3);
    text-align: center;
}

.qs-note a {
    color: var(--primary);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 48px 20px 32px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-3);
    margin-top: 12px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-2);
}

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

.footer-bottom {
    max-width: 1100px;
    margin: 32px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-3);
}

/* Mobile */
@media (min-width: 768px) {
    .hero {
        grid-template-columns: 1fr 1fr;
        padding: 160px 20px 100px;
    }

    .hero-content h1 {
        font-size: 52px;
    }
}

@media (max-width: 767px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        z-index: 99;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 16px;
        padding: 12px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }

    .hero {
        padding: 100px 20px 48px;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-btns {
        justify-content: center;
    }

    .flow-diagram {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .flow-col {
        width: 100%;
        max-width: 200px;
    }

    .tunnel-col {
        width: 100%;
        max-width: none;
        padding: 20px 0;
    }

    .tunnel {
        max-width: 200px;
        margin: 0 auto;
        transform: rotate(90deg);
    }

    .flow-arrow {
        width: 24px;
        height: 2px;
        margin: 0 auto;
    }

    .flow-arrow::after {
        bottom: auto;
        left: auto;
        right: -4px;
        top: -3px;
        border: 4px solid transparent;
        border-left-color: var(--border);
        border-top-color: transparent;
    }

    section {
        padding: 60px 20px;
    }

    section h2 {
        font-size: 26px;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* Docs page styles (reusable) */
.doc-page {
    padding: 100px 20px 60px;
    max-width: 800px;
    margin: 0 auto;
}

.doc-page h1 {
    font-size: 36px;
    margin-bottom: 16px;
}

.doc-page .lead {
    font-size: 18px;
    color: var(--text-2);
    margin-bottom: 40px;
}

.doc-page h2 {
    font-size: 24px;
    margin: 40px 0 16px;
}

.doc-page h3 {
    font-size: 18px;
    margin: 32px 0 12px;
}

.doc-page p {
    margin-bottom: 16px;
    color: var(--text-2);
}

.doc-page pre {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0 24px;
    overflow-x: auto;
}

.doc-page code {
    font-size: 13px;
    color: var(--text-2);
}

.doc-page ul,
.doc-page ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-2);
}

.doc-page li {
    margin-bottom: 8px;
}

.doc-page a {
    color: var(--primary);
}

.doc-page .back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 24px;
}

.doc-page .back-link:hover {
    color: var(--text);
}

/* Releases */
#releases-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 40px 0;
}

.loading-state {
    text-align: center;
    padding: 60px 0;
    color: var(--text-2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--bg-3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.release-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.15s;
}

.release-card:hover {
    border-color: var(--text-3);
}

.release-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

.release-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.release-card h3 {
    margin: 0 !important;
    font-size: 20px !important;
}

.tag {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-stable {
    background: rgba(34, 197, 94, 0.1);
    color: var(--green);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.tag-pre {
    background: rgba(250, 204, 21, 0.1);
    color: var(--yellow);
    border: 1px solid rgba(250, 204, 21, 0.2);
}

.release-date {
    font-size: 13px;
    color: var(--text-3);
    font-family: var(--mono);
}

.release-body {
    padding: 24px;
    font-size: 15px;
    color: var(--text-2);
    overflow-wrap: break-word;
}

.release-body h1,
.release-body h2,
.release-body h3 {
    font-size: 16px;
    margin-top: 20px;
    margin-bottom: 8px;
    color: var(--text);
}

.release-body ul {
    padding-left: 20px;
    margin-bottom: 16px;
}

.release-body li {
    margin-bottom: 4px;
}

.release-body p {
    margin-bottom: 16px;
}

.release-assets {
    padding: 20px 24px;
    background: var(--bg-3);
    border-top: 1px solid var(--border);
}

.release-assets h4 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-3);
    margin-bottom: 12px;
}

.assets-list {
    display: grid;
    gap: 8px;
}

.download-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--mono);
    font-size: 13px;
    transition: 0.15s;
}

.download-link:hover {
    border-color: var(--primary);
    color: var(--text);
    background: var(--bg);
}

.download-link svg {
    color: var(--text-3);
}

.download-link:hover svg {
    color: var(--primary);
}

.asset-size {
    margin-left: auto;
    color: var(--text-3);
    font-size: 12px;
}

.error-message {
    padding: 40px;
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    color: #fca5a5;
}

.error-message a {
    color: #fff;
    text-decoration: underline;
}