/* ==========================================
   AgentVault — Premium Design System v3
   Linear / Vercel / Raycast tier
   ========================================== */

:root {
    --bg-base: #09090b;
    --bg-elevated: #0f0f12;
    --bg-card: #141418;
    --bg-card-hover: #1c1c22;
    --bg-subtle: rgba(255,255,255,0.03);

    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --border-accent: rgba(255,255,255,0.10);

    --text-primary: #ededed;
    --text-secondary: #a0a0a0;
    --text-muted: #555;

    --accent: #ededed;
    --accent-soft: #d4d4d4;
    --accent-glow: rgba(255,255,255,0.04);
    --accent-gradient: linear-gradient(135deg, #e0e0e0, #fff);

    --emerald: #34d399;
    --red: #f87171;
    --blue: #60a5fa;
    --amber: #fbbf24;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

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

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

/* ===== NAV ===== */
.nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(9,9,11,0.75);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: border-color 0.3s var(--ease);
}
.nav-inner {
    max-width: 1120px; margin: 0 auto;
    padding: 0 32px; height: 56px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
    display: flex; align-items: center; gap: 10px;
    font-size: 15px; font-weight: 700; letter-spacing: -0.3px;
    color: var(--text-primary);
}
.nav-brand .logo-mark {
    width: 22px; height: 22px;
    border-radius: 5px;
    background: #ededed;
    display: flex; align-items: center; justify-content: center;
}
.nav-brand .logo-mark svg { width: 12px; height: 12px; fill: #09090b; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
    color: var(--text-muted); font-size: 13px; font-weight: 500;
    padding: 6px 12px; border-radius: var(--radius-sm);
    transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text-secondary); background: var(--bg-subtle); }
.nav-cta {
    color: var(--text-secondary) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
    padding: 5px 14px !important;
    font-weight: 500 !important;
    transition: all 0.2s var(--ease) !important;
}
.nav-cta:hover {
    color: var(--text-primary) !important;
    border-color: var(--border-hover) !important;
    background: var(--bg-card) !important;
}

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 140px 32px 80px;
    text-align: center;
    overflow: hidden;
}
.hero-glow {
    position: absolute; top: -120px; left: 50%; transform: translateX(-50%);
    width: 600px; height: 600px;
    background: radial-gradient(ellipse, rgba(255,255,255,0.03) 0%, transparent 70%);
    pointer-events: none;
}
.hero-content { position: relative; max-width: 680px; margin: 0 auto; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 5px 14px 5px 10px;
    background: var(--accent-glow);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 100px;
    font-size: 12px; font-weight: 500;
    color: var(--accent-soft);
    margin-bottom: 28px;
}
.badge-dot {
    width: 6px; height: 6px;
    background: var(--emerald); border-radius: 50%;
    animation: pulse 2.5s ease infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero-title {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 800; line-height: 1.08;
    letter-spacing: -1.8px;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #d4d4d4 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-sub {
    font-size: 16px; color: var(--text-secondary);
    max-width: 480px; margin: 0 auto 36px;
    line-height: 1.7; font-weight: 400;
}

.hero-actions { display: flex; gap: 12px; justify-content: center; margin-bottom: 56px; }
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 20px; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 600;
    transition: all 0.2s var(--ease); cursor: pointer; border: none;
    font-family: var(--font-sans);
}
.btn-primary {
    background: var(--accent); color: #09090b;
    box-shadow: 0 1px 2px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-primary:hover { background: #fff; color: #09090b; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,255,255,0.1); }
.btn-secondary {
    background: var(--bg-card); color: var(--text-secondary);
    border: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--border-hover); color: var(--text-primary); }
.btn-icon { font-size: 14px; }

.hero-stats {
    display: grid; grid-template-columns: repeat(5, 1fr);
    gap: 16px; max-width: 680px; margin: 0 auto;
    padding: 20px 24px;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.hero-stat { text-align: center; }
.hero-stat-value {
    font-family: var(--font-mono); font-size: 24px; font-weight: 700;
    color: var(--text-primary); letter-spacing: -0.5px;
}
.hero-stat-label {
    font-size: 11px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px;
}

/* ===== SECTION COMMON ===== */
section { max-width: 1120px; margin: 0 auto; padding: 80px 32px; }
.section-title {
    font-size: 28px; font-weight: 700; text-align: center;
    letter-spacing: -0.5px; margin-bottom: 8px; color: var(--text-primary);
}
.section-sub { text-align: center; color: var(--text-muted); font-size: 15px; margin-bottom: 48px; }

/* ===== STARTER KIT ===== */
.starter-kit-section { padding: 40px 32px 80px; }
.starter-kit-card {
    max-width: 880px; margin: 0 auto;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 40px; position: relative;
}
.starter-kit-card::before {
    content: ''; position: absolute; top: 0; left: 48px; right: 48px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.4;
}
.starter-kit-header { text-align: center; margin-bottom: 36px; }
.starter-kit-badge {
    display: inline-block; padding: 4px 12px;
    background: var(--accent-glow); border: 1px solid rgba(255,255,255,0.08);
    color: var(--accent-soft); font-size: 11px; font-weight: 600;
    border-radius: 100px; margin-bottom: 14px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.starter-kit-title { font-size: 24px; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.5px; }
.starter-kit-sub { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.starter-kit-sub code {
    font-family: var(--font-mono); background: var(--accent-glow);
    color: var(--accent-soft); padding: 2px 8px; border-radius: 4px;
    font-size: 12px; font-weight: 500;
}

.starter-kit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 32px; }
.tool-group {
    background: var(--bg-base); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 16px;
}
.tool-group-label {
    font-size: 11px; font-weight: 600; color: var(--text-muted);
    margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.8px;
    display: flex; align-items: center; gap: 6px;
}
.tool-group-label .label-dot {
    width: 4px; height: 4px; border-radius: 50%;
}
.tool-group-label .dot-web { background: var(--blue); }
.tool-group-label .dot-memory { background: var(--accent-soft); }
.tool-group-label .dot-util { background: var(--amber); }

.tool-item { display: flex; flex-direction: column; padding: 6px 0; border-bottom: 1px solid var(--border); }
.tool-item:last-child { border-bottom: none; }
.tool-name { font-family: var(--font-mono); font-size: 12px; color: var(--text-primary); font-weight: 500; }
.tool-desc { font-size: 11px; color: var(--text-muted); margin-top: 1px; }

/* Install Tabs */
.starter-kit-install {
    background: var(--bg-base); border: 1px solid var(--border);
    border-radius: var(--radius-md); overflow: hidden;
}
.install-tabs { display: flex; border-bottom: 1px solid var(--border); }
.install-tab {
    flex: 1; padding: 10px 16px; text-align: center;
    font-size: 12px; font-weight: 500; color: var(--text-muted);
    cursor: pointer; transition: all 0.15s var(--ease);
    border-bottom: 1px solid transparent; margin-bottom: -1px;
}
.install-tab:hover { color: var(--text-secondary); background: var(--bg-subtle); }
.install-tab.active { color: var(--accent-soft); border-bottom-color: var(--accent); background: var(--accent-glow); }
.install-panel { display: none; padding: 20px; }
.install-panel.active { display: block; }
.install-code {
    font-family: var(--font-mono); font-size: 12px; line-height: 1.8;
    color: var(--text-secondary); white-space: pre; overflow-x: auto;
    background: none; border: none; margin: 0;
}

/* ===== PRODUCTS ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 28px 24px;
    transition: all 0.25s var(--ease); position: relative;
}
.product-card:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,0,0,0.3); }
.product-card.featured { border-color: var(--border-accent); }
.product-badge {
    position: absolute; top: 16px; right: 16px;
    padding: 3px 10px; background: var(--accent-glow);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--accent-soft); font-size: 10px; font-weight: 600;
    border-radius: 100px; text-transform: uppercase; letter-spacing: 0.3px;
}

.product-icon {
    width: 36px; height: 36px; margin-bottom: 16px;
    border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
}
.product-icon svg { width: 20px; height: 20px; stroke: var(--text-secondary); stroke-width: 1.5; fill: none; }
.product-icon.icon-tools { background: rgba(255,255,255,0.06); }
.product-icon.icon-tools svg { stroke: var(--text-primary); }
.product-icon.icon-memory { background: rgba(96,165,250,0.1); }
.product-icon.icon-memory svg { stroke: var(--blue); }
.product-icon.icon-score { background: rgba(52,211,153,0.1); }
.product-icon.icon-score svg { stroke: var(--emerald); }
.product-icon.icon-guard { background: rgba(248,113,113,0.1); }
.product-icon.icon-guard svg { stroke: var(--red); }
.product-icon.icon-gateway { background: rgba(251,191,36,0.1); }
.product-icon.icon-gateway svg { stroke: var(--amber); }
.product-icon.icon-retry { background: rgba(96,165,250,0.1); }
.product-icon.icon-retry svg { stroke: var(--blue); }
.product-icon.icon-cache { background: rgba(52,211,153,0.1); }
.product-icon.icon-cache svg { stroke: var(--emerald); }

.product-name { font-size: 17px; font-weight: 600; margin-bottom: 2px; letter-spacing: -0.2px; }
.product-tag { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.product-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
.product-features { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.product-features span {
    font-size: 12px; color: var(--text-muted);
    padding-left: 14px; position: relative;
}
.product-features span::before {
    content: ''; position: absolute; left: 0; top: 7px;
    width: 4px; height: 4px; border-radius: 50%; background: var(--text-muted);
}
.product-code {
    padding: 8px 12px; background: var(--bg-base);
    border-radius: var(--radius-sm); border: 1px solid var(--border);
    transition: border-color 0.2s;
}
.product-code:hover { border-color: var(--border-hover); }
.product-code code { font-family: var(--font-mono); font-size: 11px; color: var(--text-secondary); }

/* ===== ECOSYSTEM ===== */
.ecosystem-section { padding: 80px 32px; }
.ecosystem-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 16px; max-width: 840px; margin: 0 auto 48px;
}
.eco-stat-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 28px 20px; text-align: center;
    transition: all 0.25s var(--ease);
}
.eco-stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.25); }
.eco-stat-value { font-family: var(--font-mono); font-size: 40px; font-weight: 800; line-height: 1; margin-bottom: 6px; }
.eco-danger .eco-stat-value { color: var(--red); }
.eco-success .eco-stat-value { color: var(--emerald); }
.eco-info .eco-stat-value { color: var(--blue); }
.eco-stat-label { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.eco-stat-detail { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

.leaderboard { max-width: 640px; margin: 0 auto; }
.leaderboard-title { font-size: 16px; font-weight: 600; text-align: center; margin-bottom: 16px; color: var(--text-muted); }

.data-grid { display: flex; flex-direction: column; gap: 6px; }
.data-card {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 18px; background: var(--bg-card);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    transition: all 0.15s var(--ease);
}
.data-card:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.data-rank {
    font-family: var(--font-mono); font-size: 13px; font-weight: 600;
    min-width: 28px; text-align: center; color: var(--text-muted);
}
.data-info { flex: 1; }
.data-name { font-weight: 500; font-size: 14px; }
.data-meta { font-size: 12px; color: var(--text-muted); }
.data-score { font-family: var(--font-mono); font-size: 16px; font-weight: 700; }
.data-score.grade-aplus { color: var(--emerald); }

/* ===== GUARD ===== */
.guard-section {
    background: var(--bg-elevated); max-width: 100%; padding: 80px 32px;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.guard-section .section-title, .guard-section .section-sub {
    max-width: 1120px; margin-left: auto; margin-right: auto;
}
.guard-section .section-sub { margin-bottom: 40px; }

.guard-demo {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 16px; max-width: 840px; margin: 0 auto 40px;
}
.demo-panel { border-radius: var(--radius-md); border: 1px solid var(--border); overflow: hidden; }
.demo-header {
    padding: 10px 16px; font-size: 12px; font-weight: 600;
    border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px;
}
.demo-header .status-dot { width: 6px; height: 6px; border-radius: 50%; }
.demo-danger .status-dot { background: var(--red); }
.demo-safe .status-dot { background: var(--emerald); }
.demo-danger .demo-header { background: rgba(248,113,113,0.04); color: var(--red); }
.demo-safe .demo-header { background: rgba(52,211,153,0.04); color: var(--emerald); }
.demo-code {
    padding: 16px; background: var(--bg-base);
    font-family: var(--font-mono); font-size: 11px; line-height: 1.8;
    color: var(--text-secondary); white-space: pre; overflow-x: auto;
}
.code-comment { color: var(--text-muted); }
.code-key { color: var(--blue); }
.code-string { color: var(--emerald); }
.code-danger { color: var(--red); font-weight: 500; }
.code-safe { color: var(--emerald); font-weight: 500; }
.code-keyword { color: var(--accent-soft); }

.guard-usage { max-width: 560px; margin: 0 auto; }
.guard-usage h3 { font-size: 14px; font-weight: 600; margin-bottom: 10px; text-align: center; color: var(--text-muted); }
.usage-code {
    padding: 20px; background: var(--bg-base);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    font-family: var(--font-mono); font-size: 12px; line-height: 1.8;
    color: var(--text-secondary); white-space: pre; overflow-x: auto;
}

/* ===== FOOTER ===== */
.footer { border-top: 1px solid var(--border); padding: 48px 32px 24px; }
.footer-inner {
    max-width: 1120px; margin: 0 auto;
    display: flex; justify-content: space-between; margin-bottom: 40px;
}
.footer-brand { font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.footer-brand .logo-mark {
    width: 18px; height: 18px; border-radius: 4px;
    background: #ededed; display: flex; align-items: center; justify-content: center;
}
.footer-brand .logo-mark svg { width: 10px; height: 10px; fill: #09090b; }
.footer-brand p { font-size: 13px; color: var(--text-muted); margin-top: 6px; font-weight: 400; }
.footer-links { display: flex; gap: 48px; }
.footer-col { display: flex; flex-direction: column; gap: 6px; }
.footer-col h4 {
    font-size: 11px; text-transform: uppercase; letter-spacing: 0.8px;
    color: var(--text-muted); margin-bottom: 4px; font-weight: 600;
}
.footer-col a { font-size: 13px; color: var(--text-secondary); transition: color 0.15s; }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
    max-width: 1120px; margin: 0 auto; padding-top: 20px;
    border-top: 1px solid var(--border); text-align: center;
    font-size: 11px; color: var(--text-muted);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.hero-title, .hero-sub, .hero-actions, .hero-stats,
.product-card, .data-card, .eco-stat-card, .starter-kit-card {
    animation: fadeInUp 0.5s var(--ease-out) forwards;
}
.hero-sub { animation-delay: 0.05s; }
.hero-actions { animation-delay: 0.1s; }
.hero-stats { animation-delay: 0.15s; }

.live-stat { position: relative; }
.live-dot {
    display: inline-block; width: 6px; height: 6px;
    background: var(--emerald); border-radius: 50%;
    margin-right: 4px; vertical-align: middle;
    animation: livePulse 2s ease infinite;
}
@keyframes livePulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .product-grid, .guard-demo, .starter-kit-grid, .ecosystem-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 32px; letter-spacing: -1px; }
    .hero-stats { grid-template-columns: repeat(3, 1fr); }
    .nav-links a:not(.nav-cta) { display: none; }
    .footer-inner { flex-direction: column; gap: 28px; }
    .starter-kit-card { padding: 24px 18px; }
}
@media (max-width: 480px) {
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-actions { flex-direction: column; align-items: center; }
    .nav-inner { padding: 0 16px; }
    section { padding: 60px 16px; }
}