/* ========================================
   Meridian — Design System SaaS
   Heatmap & Signals QA Testing Site
   ======================================== */

:root {
    --ink: #1a1a2e;
    --ink-light: #4a4a5e;
    --ink-muted: #8888a0;
    --surface: #faf9f7;
    --surface-raised: #ffffff;
    --accent: #2d5a27;
    --accent-light: #e8f0e6;
    --accent-hover: #1e3d1a;
    --warm: #e8d5b7;
    --border: #e4e2de;
    --border-light: #f0eee9;
    --radius: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(26,26,46,0.06);
    --shadow-md: 0 4px 12px rgba(26,26,46,0.08);
    --shadow-lg: 0 8px 30px rgba(26,26,46,0.12);
    --font-body: 'DM Sans', system-ui, sans-serif;
    --font-display: 'Fraunces', Georgia, serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--surface);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(250,249,247,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
}
.nav-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 0 24px; height: 64px;
    display: flex; align-items: center; gap: 32px;
}
.logo {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--font-display); font-weight: 600;
    font-size: 1.15rem; color: var(--ink);
    text-decoration: none;
}
.nav-links { display: flex; gap: 24px; flex: 1; }
.nav-links a {
    color: var(--ink-light); text-decoration: none;
    font-size: 0.9rem; font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-actions { display: flex; gap: 12px; align-items: center; }
.btn-ghost {
    padding: 8px 16px; border-radius: var(--radius);
    font-size: 0.9rem; font-weight: 500;
    color: var(--ink); text-decoration: none;
    border: 1px solid var(--border);
    transition: all 0.2s;
    cursor: pointer; background: none;
}
.btn-ghost:hover { border-color: var(--ink); background: var(--surface-raised); }
.btn-primary {
    padding: 8px 20px; border-radius: var(--radius);
    font-size: 0.9rem; font-weight: 600;
    color: #fff; background: var(--accent);
    text-decoration: none; border: none;
    transition: all 0.2s; cursor: pointer;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary.large, .btn-ghost.large { padding: 14px 28px; font-size: 1rem; }
.btn-primary.full, .btn-ghost.full { width: 100%; text-align: center; display: block; }
.mobile-menu-btn { display: none; }

/* ---- HERO ---- */
.hero {
    max-width: 1200px; margin: 0 auto;
    padding: 80px 24px 60px;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 48px; align-items: center;
}
.hero-badge {
    display: inline-block;
    padding: 4px 14px; border-radius: 20px;
    font-size: 0.8rem; font-weight: 600;
    color: var(--accent); background: var(--accent-light);
    margin-bottom: 16px;
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    line-height: 1.1; letter-spacing: -0.02em;
    margin-bottom: 20px;
}
.hero h1 em {
    font-style: italic; color: var(--accent);
}
.hero-sub {
    font-size: 1.1rem; color: var(--ink-light);
    max-width: 480px; margin-bottom: 28px;
}
.hero-ctas { display: flex; gap: 12px; margin-bottom: 32px; }
.hero-proof { display: flex; align-items: center; gap: 12px; }
.avatars { display: flex; }
.avatar {
    width: 32px; height: 32px; border-radius: 50%;
    border: 2px solid var(--surface);
    margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }
.hero-proof span { font-size: 0.85rem; color: var(--ink-muted); }
.hero-visual { display: flex; justify-content: center; }
.hero-mockup {
    width: 100%; max-width: 520px;
    background: var(--ink); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-lg);
}
.mockup-bar {
    padding: 10px 14px; display: flex; gap: 6px;
    background: rgba(255,255,255,0.06);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }
.mockup-content { display: flex; padding: 16px; gap: 12px; min-height: 280px; }
.mock-sidebar { display: flex; flex-direction: column; gap: 8px; width: 60px; }
.mock-item { height: 8px; border-radius: 4px; background: rgba(255,255,255,0.12); }
.mock-item.active { background: var(--accent); width: 80%; }
.mock-main { flex: 1; display: flex; flex-wrap: wrap; gap: 10px; }
.mock-card { width: 46%; height: 80px; border-radius: 8px; background: rgba(255,255,255,0.06); }
.mock-card.wide { width: 96%; height: 60px; }

/* ---- LOGOS ---- */
.logos-section {
    max-width: 1200px; margin: 0 auto;
    padding: 40px 24px; text-align: center;
    border-top: 1px solid var(--border-light);
}
.logos-label { font-size: 0.8rem; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 20px; }
.logos-row { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.logo-fake { font-family: var(--font-display); font-size: 1.1rem; color: var(--ink-muted); opacity: 0.6; }

/* ---- FEATURES ---- */
.features {
    max-width: 1200px; margin: 0 auto;
    padding: 80px 24px;
}
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 12px;
}
.section-header p { color: var(--ink-light); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }
.features-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    padding: 28px; border-radius: var(--radius-lg);
    background: var(--surface-raised);
    border: 1px solid var(--border);
    transition: all 0.25s; cursor: pointer;
}
.feature-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--ink-light); margin-bottom: 12px; }
.feature-link { font-size: 0.85rem; color: var(--accent); text-decoration: none; font-weight: 600; }

/* ---- CTA BANNER ---- */
.cta-banner {
    max-width: 1200px; margin: 0 auto;
    padding: 0 24px;
}
.cta-inner {
    background: var(--ink); color: #fff;
    border-radius: var(--radius-lg);
    padding: 60px 48px; text-align: center;
}
.cta-inner h2 { font-family: var(--font-display); font-size: 2rem; margin-bottom: 8px; }
.cta-inner p { color: rgba(255,255,255,0.7); margin-bottom: 24px; }
.cta-form { display: flex; gap: 8px; max-width: 420px; margin: 0 auto; }
.cta-input {
    flex: 1; padding: 12px 16px; border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: #fff; font-size: 0.9rem;
    outline: none;
}
.cta-input::placeholder { color: rgba(255,255,255,0.4); }
.cta-input:focus { border-color: var(--accent); }
.cta-form .btn-primary { background: #fff; color: var(--ink); }
.cta-form .btn-primary:hover { background: #eee; }

/* ---- TESTIMONIALS ---- */
.testimonials {
    max-width: 1200px; margin: 0 auto;
    padding: 80px 24px;
}
.testimonials-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.testimonial-card {
    padding: 28px; border-radius: var(--radius-lg);
    background: var(--surface-raised);
    border: 1px solid var(--border);
    cursor: pointer; transition: all 0.25s;
}
.testimonial-card:hover { box-shadow: var(--shadow-md); }
.quote { font-family: var(--font-display); font-size: 1rem; line-height: 1.5; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-author strong { display: block; font-size: 0.9rem; }
.testimonial-author span { font-size: 0.8rem; color: var(--ink-muted); }

/* ---- PRICING ---- */
.pricing-preview {
    max-width: 1200px; margin: 0 auto;
    padding: 80px 24px;
}
.pricing-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.price-card {
    padding: 32px; border-radius: var(--radius-lg);
    background: var(--surface-raised);
    border: 1px solid var(--border);
    position: relative; cursor: pointer;
    transition: all 0.25s;
}
.price-card:hover { box-shadow: var(--shadow-md); }
.price-card.featured { border-color: var(--accent); }
.card-badge {
    position: absolute; top: -10px; left: 24px;
    padding: 2px 12px; border-radius: 12px;
    font-size: 0.75rem; font-weight: 600;
    background: var(--accent); color: #fff;
}
.price-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.price { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; margin-bottom: 4px; }
.price span { font-size: 0.9rem; font-weight: 400; color: var(--ink-muted); }
.price-card p { font-size: 0.9rem; color: var(--ink-light); margin-bottom: 20px; }
.price-card ul { list-style: none; margin-bottom: 24px; }
.price-card li { padding: 6px 0; font-size: 0.9rem; color: var(--ink-light); }
.price-card li::before { content: "✓ "; color: var(--accent); font-weight: 700; }

/* ---- FAQ ---- */
.faq-section {
    max-width: 800px; margin: 0 auto;
    padding: 80px 24px;
}
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; cursor: pointer;
}
.faq-question {
    width: 100%; padding: 18px 24px;
    font-size: 1rem; font-weight: 600;
    background: var(--surface-raised); border: none;
    text-align: left; cursor: pointer;
    display: flex; justify-content: space-between;
    color: var(--ink);
}
.faq-question::after { content: "+"; font-size: 1.3rem; color: var(--ink-muted); transition: transform 0.3s; }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 200px; padding: 0 24px 18px; }
.faq-answer p { font-size: 0.9rem; color: var(--ink-light); }

/* ---- FOOTER ---- */
.footer {
    border-top: 1px solid var(--border);
    padding: 60px 24px 24px;
    max-width: 1200px; margin: 0 auto;
}
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-muted); margin-bottom: 4px; }
.footer-col a { font-size: 0.9rem; color: var(--ink-light); text-decoration: none; }
.footer-col a:hover { color: var(--ink); }
.footer-col p { font-size: 0.9rem; color: var(--ink-muted); }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-light); }
.footer-bottom p { font-size: 0.8rem; color: var(--ink-muted); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .hero { grid-template-columns: 1fr; padding: 48px 24px 32px; }
    .hero-visual { order: -1; }
    .features-grid, .testimonials-grid, .pricing-cards { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .nav-links, .nav-actions { display: none; }
    .mobile-menu-btn { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; }
    .mobile-menu-btn span { width: 20px; height: 2px; background: var(--ink); }
    .cta-form { flex-direction: column; }
}

/* ========================================
   QA DIAGNOSTICS PANEL
   ======================================== */
.qa-toggle {
    position: fixed; bottom: 20px; right: 20px;
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--ink); color: #fff; border: none;
    font-size: 1.3rem; cursor: pointer;
    box-shadow: var(--shadow-lg); z-index: 9999;
    transition: transform 0.2s;
}
.qa-toggle:hover { transform: scale(1.1); }

.qa-panel {
    position: fixed; top: 0; right: 0;
    width: 520px; max-width: 100vw; height: 100vh;
    background: #1a1a2e; color: #e0e0e8;
    z-index: 10000; overflow-y: auto;
    box-shadow: -4px 0 30px rgba(0,0,0,0.3);
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}
.qa-panel.hidden { transform: translateX(100%); }

.qa-panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.qa-panel-header h3 { font-size: 1rem; font-weight: 600; }
.qa-close {
    background: none; border: none; color: #888;
    font-size: 1.5rem; cursor: pointer; line-height: 1;
}
.qa-panel-body { padding: 0 20px 20px; }

.qa-tabs {
    display: flex; gap: 4px;
    padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 16px;
}
.qa-tab {
    padding: 6px 14px; border-radius: 6px;
    background: none; border: none; color: #888;
    cursor: pointer; font-size: 0.8rem; font-weight: 500;
    transition: all 0.2s;
}
.qa-tab.active { background: rgba(255,255,255,0.1); color: #fff; }

.qa-tab-content { display: none; }
.qa-tab-content.active { display: block; }

.qa-status-grid { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.qa-status-card {
    display: flex; align-items: center; gap: 12px;
    padding: 12px; border-radius: 8px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
}
.qa-status-card strong { display: block; font-size: 0.85rem; }
.qa-detail { font-size: 0.78rem; color: #888; margin-top: 2px; word-break: break-all; }

.qa-status-indicator {
    width: 10px; height: 10px; border-radius: 50%;
    flex-shrink: 0;
}
.qa-status-indicator.pending { background: #888; }
.qa-status-indicator.success { background: #28c840; }
.qa-status-indicator.warning { background: #ffbd2e; }
.qa-status-indicator.error { background: #ff5f57; }

.qa-btn {
    padding: 8px 16px; border-radius: 6px;
    font-size: 0.8rem; font-weight: 600;
    cursor: pointer; transition: all 0.2s;
    background: #2d5a27; color: #fff; border: none;
    margin-right: 8px;
}
.qa-btn.secondary { background: rgba(255,255,255,0.08); color: #ccc; }
.qa-btn.danger { background: #c0392b; }
.qa-btn.small { padding: 4px 10px; font-size: 0.75rem; }
.qa-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.qa-filter-bar {
    display: flex; gap: 12px; align-items: center;
    margin-bottom: 12px; flex-wrap: wrap;
}
.qa-filter-bar label {
    display: flex; align-items: center; gap: 4px;
    font-size: 0.78rem; color: #aaa;
}
.qa-filter-bar input[type="checkbox"] { accent-color: var(--accent); }

.qa-log {
    background: #0d0d1a; border-radius: 8px;
    padding: 12px; max-height: 300px;
    overflow-y: auto; font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.72rem; line-height: 1.6;
    border: 1px solid rgba(255,255,255,0.06);
}
.qa-log:empty::before {
    content: "No entries yet...";
    color: #555;
}
.qa-log .log-entry { padding: 2px 0; border-bottom: 1px solid rgba(255,255,255,0.03); }
.qa-log .log-entry.script { color: #e8d44d; }
.qa-log .log-entry.xhr { color: #5dade2; }
.qa-log .log-entry.beacon { color: #e88d5d; }
.qa-log .log-entry.ws { color: #af7ac5; }
.qa-log .log-entry.convert { color: #58d68d; font-weight: 600; }
.qa-log .log-entry.sim { color: #aab; }
.qa-log .log-entry.warn { color: #f0c040; }
.qa-log .log-entry.err { color: #e74c3c; }

.qa-summary-bar {
    display: flex; gap: 16px; padding: 8px 0;
    font-size: 0.78rem; color: #888;
}

.qa-ws-details { margin-top: 16px; }
.qa-ws-details h4 { font-size: 0.85rem; margin-bottom: 8px; color: #bbb; }
.qa-pre {
    background: #0d0d1a; border-radius: 8px;
    padding: 12px; font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.72rem; color: #888;
    border: 1px solid rgba(255,255,255,0.06);
    white-space: pre-wrap; word-break: break-all;
}

.qa-hint { font-size: 0.72rem; color: #666; }

.qa-sim-controls h4 { margin-bottom: 4px; }
.qa-sim-options {
    display: flex; flex-direction: column; gap: 6px;
    margin: 12px 0;
}
.qa-sim-options label {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.82rem; color: #ccc;
}
.qa-sim-options input[type="checkbox"] { accent-color: var(--accent); }
.qa-sim-speed {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 16px;
}
.qa-sim-speed select {
    padding: 4px 8px; border-radius: 4px;
    background: #0d0d1a; color: #ccc;
    border: 1px solid rgba(255,255,255,0.1);
    font-size: 0.8rem;
}
.qa-sim-speed label { font-size: 0.82rem; color: #aaa; }
.qa-sim-buttons { display: flex; gap: 8px; margin-bottom: 16px; }
.qa-sim-stats {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 8px; margin-bottom: 12px;
}
.qa-stat {
    background: rgba(255,255,255,0.04);
    border-radius: 6px; padding: 8px;
    text-align: center; font-size: 0.75rem; color: #aaa;
}
.qa-stat span { display: block; font-size: 1.2rem; font-weight: 700; color: #fff; }

.hidden { display: none !important; }