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

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f1a;
    --bg-card: #12121f;
    --bg-card-hover: #1a1a2e;
    --border: #1e1e35;
    --border-hover: #2a2a4a;
    --text-primary: #e8e8f0;
    --text-secondary: #8888a8;
    --text-muted: #555570;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-glow: rgba(108, 92, 231, 0.15);
    --green: #00d2d3;
    --green-glow: rgba(0, 210, 211, 0.15);
    --orange: #ff9f43;
    --pink: #ff6b9d;
    --blue: #48dbfb;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

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

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(108, 92, 231, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 92, 231, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 20%, transparent 70%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--accent-glow);
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title-main {
    display: block;
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, var(--accent-light) 50%, var(--green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title-sub {
    display: block;
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 16px;
    letter-spacing: -0.01em;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 32px auto 0;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-light);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 4px;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--accent), #5a4bd1);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 100px;
    transition: var(--transition);
    animation: fadeInUp 0.8s ease-out 0.5s both;
    box-shadow: 0 4px 24px rgba(108, 92, 231, 0.3);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(108, 92, 231, 0.5);
}

.hero-cta .arrow {
    transition: var(--transition);
}

.hero-cta:hover .arrow {
    transform: translateY(3px);
}

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

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-glow);
    border: 1px solid rgba(108, 92, 231, 0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-light);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Agents Grid ===== */
.agents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.agent-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.agent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--green));
    opacity: 0;
    transition: var(--transition);
}

.agent-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.agent-card:hover::before {
    opacity: 1;
}

.agent-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.agent-icon svg {
    width: 32px;
    height: 32px;
}

.agent-director .agent-icon { color: var(--orange); }
.agent-codir .agent-icon { color: var(--accent-light); }
.agent-experimental .agent-icon { color: var(--green); }
.agent-infra .agent-icon { color: var(--blue); }
.agent-infra-exp .agent-icon { color: var(--pink); }

.agent-director::before { background: linear-gradient(90deg, var(--orange), #ffbe76); }
.agent-codir::before { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.agent-experimental::before { background: linear-gradient(90deg, var(--green), #55efc4); }
.agent-infra::before { background: linear-gradient(90deg, var(--blue), #74b9ff); }
.agent-infra-exp::before { background: linear-gradient(90deg, var(--pink), #fd79a8); }

.agent-node {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.agent-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.agent-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.agent-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.agent-tags span {
    font-size: 0.7rem;
    padding: 4px 10px;
    background: rgba(108, 92, 231, 0.08);
    border: 1px solid rgba(108, 92, 231, 0.1);
    border-radius: 100px;
    color: var(--accent-light);
    font-weight: 500;
}

/* ===== Architecture Grid ===== */
.arch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.arch-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}

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

.arch-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--green);
}

.arch-icon svg {
    width: 28px;
    height: 28px;
}

.arch-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.arch-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.arch-code {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    overflow-x: auto;
}

.arch-code code {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.arch-code pre {
    margin: 0;
}

.arch-detail {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
}

.arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.flow-node {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--green);
    font-weight: 500;
}

.flow-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.flow-arrow svg {
    width: 60px;
    height: 20px;
    color: var(--accent-light);
}

.tmux-sessions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.tmux-session {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 6px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: var(--transition);
}

.tmux-session.active {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-glow);
}

/* ===== Tech Grid ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.tech-icon-wrap {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--accent-light);
}

.tech-icon-wrap svg {
    width: 28px;
    height: 28px;
}

.tech-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.tech-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    padding: 48px 0;
    border-top: 1px solid var(--border);
    background: var(--bg-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-meta {
    text-align: right;
}

.footer-meta p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-note {
    margin-top: 4px;
}

.footer-note strong {
    color: var(--accent-light);
    font-weight: 500;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .navbar {
        padding: 12px 20px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-stats {
        gap: 32px;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .agents-grid,
    .arch-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }

    .arch-flow {
        flex-direction: column;
    }

    .flow-arrow {
        transform: rotate(90deg);
    }

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

    .footer-meta {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-badge {
        font-size: 0.7rem;
    }

    .tmux-sessions {
        flex-direction: column;
        align-items: center;
    }
}