/* ── Reset & Tokens ── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --blue: #2563eb;
    --blue-dark: #1d4ed8;
    --blue-glow: rgba(37, 99, 235, 0.15);
    --bg-base: #080810;
    --bg-raised: #0d0d20;
    --bg-card: #111128;
    --bg-input: #0a0a18;
    --bg-surface: #1a1a2e;
    --bg-surface-hover: #1a1a40;
    --text-primary: #f0f0f8;
    --text-secondary: #8888aa;
    --text-muted: #5050a0;
    --text-accent: #6090e0;
    --border: #1a1a30;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
    --radius: 10px;
    --radius-sm: 6px;
    --container: 1100px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--blue);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

img,
svg {
    display: block;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Navbar ── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8, 8, 16, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    text-decoration: none;
}
.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 7px;
}
.logo-icon.small {
    width: 24px;
    height: 24px;
    border-radius: 5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.15s;
}
.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 14px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition:
        background 0.15s,
        color 0.15s;
}
.nav-github:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    text-decoration: none;
}
.nav-github svg {
    display: inline-block;
    flex-shrink: 0;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
}

/* ── Hero ── */
.hero {
    padding: 100px 0 60px;
    background: var(--bg-base);
    text-align: center;
}

.hero-center {
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-accent);
    background: #0f1640;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 28px;
    letter-spacing: 0.01em;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--blue);
    border-radius: 50%;
    flex-shrink: 0;
}

.hero h1 {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 800;
    line-height: 1.08;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 36px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 28px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
    border: none;
}
.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--blue);
    color: #fff;
}
.btn-primary:hover {
    background: var(--blue-dark);
    box-shadow: 0 0 24px var(--blue-glow);
}

.btn-ghost {
    background: var(--bg-surface);
    color: var(--text-secondary);
}
.btn-ghost:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

/* ── VS Code Mockup ── */
.mockup-wrapper {
    margin-top: 48px;
    display: flex;
    justify-content: center;
}

.mockup {
    display: flex;
    background: #0d0d1a;
    border-radius: 16px;
    overflow: hidden;
    width: 100%;
    max-width: 960px;
    height: 460px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow:
        0 32px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.03);
}

.mockup-sidebar {
    width: 48px;
    background: #131320;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 0;
    gap: 12px;
    flex-shrink: 0;
}

.mockup-sidebar-icon {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    background: #1e1e30;
}
.mockup-sidebar-icon.active {
    background: var(--blue);
}

.mockup-main {
    flex: 1;
    display: flex;
    gap: 1px;
    background: #0d0d1a;
    min-width: 0;
}

.mockup-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.mockup-chat {
    width: 320px;
    flex-shrink: 0;
    background: #111120;
}

.mockup-canvas {
    flex: 1;
    background: #0a0a18;
}

.mockup-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    height: 36px;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: #0d0d1a;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.mockup-tab-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2a2a50;
}
.mockup-tab-dot.blue {
    background: var(--blue);
}

.mockup-chat-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;
}

.mockup-msg {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.mockup-msg-avatar {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    flex-shrink: 0;
    padding-top: 2px;
    min-width: 22px;
}

.mockup-msg-ai .mockup-msg-avatar {
    color: var(--blue);
}

.mockup-msg p {
    font-size: 0.78rem;
    line-height: 1.5;
    color: #b0b0d0;
}

.mockup-tool-call {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tool-tag {
    font-family: var(--mono);
    font-size: 0.68rem;
    background: #1a2040;
    color: var(--blue);
    padding: 2px 8px;
    border-radius: 4px;
}

.mockup-canvas-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.mockup-canvas-art {
    opacity: 0.95;
}

/* ── Social Proof Bar ── */
.proof-bar {
    background: #0a0a18;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.proof-bar .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.proof-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #3a3a70;
}

.proof-logos {
    display: flex;
    gap: 40px;
    align-items: center;
}

.proof-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
}
.proof-item svg {
    opacity: 0.7;
}

/* ── Section Shared ── */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--blue);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── How It Works ── */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-base);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step-visual {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    height: 200px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    justify-content: center;
    align-items: flex-start;
}

.step-bubble {
    background: #0f1a40;
    border-radius: 8px;
    padding: 12px 16px;
}
.step-bubble p {
    font-size: 0.78rem;
    line-height: 1.5;
    color: #c0c0e0;
}

.step-cursor {
    display: inline-block;
    background: var(--blue);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}

.step-preview {
    margin: 0 auto;
}

.step-progress {
    display: flex;
    gap: 6px;
    justify-content: center;
    width: 100%;
}
.progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #1a1a40;
}
.progress-dot.filled {
    background: var(--blue);
}

.step-status {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    width: 100%;
}

.step-file {
    background: #1a1a30;
    border-radius: 8px;
    padding: 16px;
    width: 100px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.file-ext {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--blue);
}
.file-name {
    font-size: 0.65rem;
    color: #6060a0;
}

.step-num {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--blue);
}

.step-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.step-card > p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── Features ── */
.features {
    padding: 100px 0;
    background: var(--bg-raised);
}

.feature-row {
    display: flex;
    align-items: center;
    gap: 80px;
    margin-bottom: 80px;
}
.feature-row:last-child {
    margin-bottom: 0;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

.feature-chip {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-accent);
    background: #1a2040;
    padding: 5px 12px;
    border-radius: 20px;
    width: fit-content;
}

.feature-text h3 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.feature-text > p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.feature-visual {
    width: 440px;
    flex-shrink: 0;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.visual-label {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: #4040a0;
}

/* Tools list in feature visual */
.tools-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tool-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tool-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mono);
    font-size: 0.7rem;
    color: #8080c0;
    background: #1a1a30;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}
.tool-pill.highlight {
    background: #1a2a40;
    color: #4060a0;
    font-weight: 500;
}

.tool-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--blue);
    flex-shrink: 0;
}

/* Prompt list in feature visual */
.prompt-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.prompt-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #141428;
    border-radius: 8px;
    padding: 12px 16px;
}
.prompt-item.active {
    background: #1a2040;
}

.prompt-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: #1a1a40;
    flex-shrink: 0;
}
.prompt-icon.blue {
    background: var(--blue);
}

.prompt-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.prompt-info strong {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}
.prompt-info span {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Loop row in feature visual */
.loop-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.loop-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: #1a1a30;
    border-radius: 8px;
    padding: 14px 12px;
}
.loop-step.active {
    background: #1a2040;
}

.loop-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a2880;
    border-radius: 6px;
}
.loop-step.active .loop-icon {
    background: #1a4060;
}

.loop-step span {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.loop-step.active span {
    color: var(--text-accent);
}

.loop-arrow {
    color: var(--blue);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ── Open Source ── */
.open-source {
    padding: 100px 0;
    background: var(--bg-base);
    text-align: center;
}

.oss-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--bg-card);
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--blue);
    margin-bottom: 28px;
}

.open-source h2 {
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.oss-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.oss-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.oss-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-surface);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}
.oss-badge svg {
    flex-shrink: 0;
}

/* ── Quick Start ── */
.quick-start {
    padding: 100px 0;
    background: var(--bg-raised);
}

.qs-steps {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.qs-step {
    display: flex;
    gap: 32px;
    padding: 32px 0;
    border-top: 1px solid var(--border);
}
.qs-step:last-child {
    border-bottom: 1px solid var(--border);
}

.qs-num {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a2040;
    color: var(--blue);
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

.qs-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

.qs-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.qs-content > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.qs-code {
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    overflow-x: auto;
}

.qs-code code {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: #7777dd;
    white-space: nowrap;
}

/* ── Footer ── */
.site-footer {
    background: #050509;
    padding: 60px 0;
}

.footer-top {
    display: flex;
    gap: 80px;
    margin-bottom: 40px;
}

.footer-brand {
    width: 280px;
    flex-shrink: 0;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.footer-brand > p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-links {
    flex: 1;
    display: flex;
    gap: 60px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col h4 {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #3030a0;
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 0.85rem;
    color: #6060a0;
    text-decoration: none;
    transition: color 0.15s;
}
.footer-col a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.footer-divider {
    height: 1px;
    background: var(--bg-card);
    margin-bottom: 24px;
}

.footer-bottom {
    font-size: 0.75rem;
    color: #2a2a50;
}
.footer-bottom a {
    color: #2a2a50;
    text-decoration: none;
}
.footer-bottom a:hover {
    color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .steps-grid {
        grid-template-columns: 1fr;
        max-width: 440px;
        margin: 0 auto;
    }

    .feature-row,
    .feature-row.reverse {
        flex-direction: column;
        gap: 40px;
    }

    .feature-visual {
        width: 100%;
    }

    .mockup-chat {
        width: 260px;
    }
    .mockup {
        height: 380px;
    }

    .footer-top {
        flex-direction: column;
        gap: 40px;
    }

    .footer-brand {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(8, 8, 16, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 16px 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .nav-links.open {
        display: flex;
    }

    .nav-right {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 60px 0 40px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }

    .mockup {
        display: none;
    }
    .mockup-wrapper {
        display: none;
    }

    .proof-bar .container {
        flex-direction: column;
        gap: 16px;
    }
    .proof-logos {
        flex-direction: column;
        gap: 12px;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .feature-text h3 {
        font-size: 1.5rem;
    }

    .qs-step {
        gap: 20px;
    }
    .qs-num {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }

    .open-source h2 {
        font-size: 1.8rem;
    }
}