/* ─── Scoped Landing Page Design System ─────────────────────────────────── */

#landing-screen {
    --bg: oklch(98.38% 0.0079 286.3);
    /* #f9f9ff */
    --surface: oklch(100% 0 0);
    /* #ffffff */
    --fg: oklch(22.55% 0.0149 261.6);
    /* #181c23 */
    --muted: oklch(48.37% 0.0316 262.2);
    /* #555f71 */
    --border: oklch(91.45% 0.0150 277.8);
    /* #e0e2ed */
    --accent: oklch(48.04% 0.1708 257.0);
    /* #0059bb */
    --accent-hover: oklch(42.0% 0.1708 257.0);
    --on-accent: oklch(100% 0 0);
    --danger: oklch(50.60% 0.1927 27.7);
    /* error red */
    --success: oklch(72.27% 0.1920 149.6);
    /* success green */
    --rust: oklch(48.77% 0.1421 43.9);
    /* data series only */

    --font-display: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;

    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dark #landing-screen {
    --bg: oklch(18.2% 0.024 260.5);
    /* #0f172a / dark slate */
    --surface: oklch(23.5% 0.028 261.0);
    /* #1e293b */
    --fg: oklch(96.5% 0.008 260.0);
    /* #f8fafc */
    --muted: oklch(72.0% 0.025 260.0);
    /* #94a3b8 */
    --border: oklch(32.0% 0.032 260.0);
    /* #334155 */
    --accent: oklch(62.0% 0.180 260.0);
    /* modern bright indigo */
    --accent-hover: oklch(68.0% 0.180 260.0);
    --on-accent: oklch(100% 0 0);
}

#landing-screen *,
#landing-screen *::before,
#landing-screen *::after {
    box-sizing: border-box;
}

#landing-screen img {
    max-width: 100%;
    display: block;
}

#landing-screen h1,
#landing-screen h2,
#landing-screen h3 {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

#landing-screen p {
    text-wrap: pretty;
}

#landing-screen a {
    color: var(--accent);
}

#landing-screen .container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ─── nav ────────────────────────────────────────────────────────── */
#landing-screen .nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in oklch, var(--surface) 86%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

#landing-screen .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 16px;
}

#landing-screen .nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--fg);
    font-weight: 800;
    font-size: 20px;
    letter-spacing: -0.02em;
}

#landing-screen .nav-logo {
    height: 38px;
    width: auto;
    -o-object-fit: contain;
       object-fit: contain;
}

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

#landing-screen .nav-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.15s ease;
}

#landing-screen .nav-link:hover {
    color: var(--fg);
}

#landing-screen .nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

#landing-screen .theme-toggle-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--fg);
    width: 40px;
    height: 40px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    transition: border-color 0.15s ease, background 0.15s ease;
}

#landing-screen .theme-toggle-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#landing-screen .nav-cta {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--fg);
    text-decoration: none;
    padding: 9px 18px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

#landing-screen .nav-cta:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#landing-screen .nav-cta-primary {
    background: var(--accent);
    color: #fff !important;
    border-color: var(--accent);
}

#landing-screen .nav-cta-primary:hover {
    background: var(--accent-hover);
}

/* ─── sections ───────────────────────────────────────────────────── */
#landing-screen .section {
    padding: 96px 0;
}

#landing-screen .section.dark-panel {
    background: color-mix(in oklch, var(--fg) 92%, black);
    color: var(--bg);
    --accent: oklch(83.01% 0.0841 265.2);
    border-radius: 28px;
    margin: 40px auto;
    padding: 80px 48px;
    max-width: 1120px;
}

#landing-screen .section.dark-panel .muted,
#landing-screen .section.dark-panel .meta {
    color: color-mix(in oklch, var(--bg) 72%, transparent);
}

#landing-screen .section.dark-panel .eyebrow {
    color: var(--accent);
}

#landing-screen .section.dark-panel .lead {
    color: color-mix(in oklch, var(--bg) 80%, transparent);
}

#landing-screen .eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 18px;
}

#landing-screen .h1 {
    font-size: clamp(38px, 5.5vw, 68px);
    line-height: 1.06;
    margin: 0 0 24px;
}

#landing-screen .h2 {
    font-size: clamp(28px, 3.8vw, 44px);
    line-height: 1.14;
    margin: 0 0 20px;
}

#landing-screen .lead {
    font-size: clamp(18px, 1.8vw, 21px);
    line-height: 1.6;
    color: var(--muted);
    max-width: 64ch;
    margin: 0;
}

/* ─── hero ───────────────────────────────────────────────────────── */
#landing-screen .hero {
    padding: 100px 0 80px;
    text-align: center;
}

#landing-screen .hero .lead {
    margin: 0 auto;
}

#landing-screen .hero-logo-wrap {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 32px;
    position: relative;
}

#landing-screen .hero-logo {
    height: clamp(100px, 14vh, 150px);
    width: auto;
    filter: drop-shadow(0 10px 25px rgba(79, 70, 229, 0.2));
    transition: transform 0.3s ease;
}

#landing-screen .hero-logo:hover {
    transform: scale(1.03);
}

#landing-screen .hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

/* ─── buttons ────────────────────────────────────────────────────── */
#landing-screen .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 999px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

#landing-screen .btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 89, 187, 0.25);
}

#landing-screen .btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
}

#landing-screen .btn-secondary {
    background: var(--surface);
    border-color: var(--border);
    color: var(--fg);
}

#landing-screen .btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#landing-screen .btn-link {
    background: none;
    border: none;
    color: var(--muted);
    padding: 14px 12px;
    font-weight: 600;
}

#landing-screen .btn-link:hover {
    color: var(--fg);
}

/* ─── problem ────────────────────────────────────────────────────── */
#landing-screen .problem-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 56px;
    align-items: center;
    background: var(--surface);
    padding: 64px;
    border-radius: 24px;
    border: 1px solid var(--border);
}

#landing-screen .stat-num {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(64px, 8vw, 110px);
    line-height: 0.95;
    letter-spacing: -0.03em;
    color: var(--accent);
    margin: 0;
}

#landing-screen .stat-num .unit {
    font-size: 0.4em;
    font-weight: 700;
}

#landing-screen .stat-caption {
    color: var(--muted);
    margin: 12px 0 4px;
    font-size: 17px;
    font-weight: 600;
}

#landing-screen .meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
}

/* ─── how it works ───────────────────────────────────────────────── */
#landing-screen .cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

#landing-screen .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: 20px;
    padding: 32px 28px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

#landing-screen .card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

#landing-screen .card-num {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
}

#landing-screen .card h3 {
    font-size: 21px;
    margin: 0 0 10px;
}

#landing-screen .card p {
    color: var(--muted);
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
}

#landing-screen .how-note {
    margin-top: 36px;
    padding: 20px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    color: var(--muted);
    font-size: 16px;
    text-align: center;
}

#landing-screen .how-note strong {
    color: var(--fg);
    font-weight: 700;
}

/* ─── trend (dark chart) ─────────────────────────────────────────── */
#landing-screen .chart-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px 32px 24px;
    margin-top: 36px;
    --accent: oklch(48.04% 0.1708 257.0);
}

#landing-screen .chart-wrap svg {
    display: block;
    width: 100%;
    height: auto;
}

#landing-screen .caption {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--muted);
    text-align: center;
    margin: 16px 0 0;
}

#landing-screen .chart-area-blue {
    fill: url(#area-blue);
}

#landing-screen .chart-area-rust {
    fill: url(#area-rust);
}

#landing-screen .chart-line-blue {
    stroke: var(--accent);
}

#landing-screen .chart-line-rust {
    stroke: var(--rust);
}

#landing-screen .chart-marker {
    stroke: var(--fg);
}

#landing-screen .chart-axis {
    stroke: var(--border);
}

#landing-screen .chart-label {
    fill: var(--muted);
}

#landing-screen .chart-label-strong {
    fill: var(--fg);
}

#landing-screen .chart-pill {
    fill: var(--surface);
    stroke: var(--border);
}

#landing-screen .chart-dot-blue {
    fill: var(--accent);
}

#landing-screen .chart-dot-rust {
    fill: var(--rust);
}

#landing-screen .grad-blue-1 {
    stop-color: var(--accent);
    stop-opacity: 0.22;
}

#landing-screen .grad-blue-2 {
    stop-color: var(--accent);
    stop-opacity: 0;
}

#landing-screen .grad-rust-1 {
    stop-color: var(--rust);
    stop-opacity: 0.22;
}

#landing-screen .grad-rust-2 {
    stop-color: var(--rust);
    stop-opacity: 0;
}

/* ─── proof / quote ──────────────────────────────────────────────── */
#landing-screen .quote-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 64px 40px;
    text-align: center;
    margin: 40px auto;
}

#landing-screen .quote {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(24px, 3vw, 36px);
    line-height: 1.35;
    letter-spacing: -0.01em;
    max-width: 32ch;
    margin: 0 auto 20px;
    text-align: center;
}

#landing-screen .quote-mark {
    font-family: var(--font-display);
    font-size: 90px;
    line-height: 0.5;
    color: var(--accent);
    opacity: 0.25;
    margin: 0 0 20px;
}

#landing-screen .quote-author {
    color: var(--muted);
    font-size: 15px;
    margin: 0 0 32px;
}

#landing-screen .proof-stat {
    color: var(--muted);
    font-size: 16px;
    border-top: 1px solid var(--border);
    padding-top: 24px;
    max-width: 600px;
    margin: 0 auto;
}

#landing-screen .proof-stat strong {
    color: var(--fg);
    font-weight: 700;
}

/* ─── request form ───────────────────────────────────────────────── */
#landing-screen .request-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
    background: var(--surface);
    padding: 64px;
    border-radius: 28px;
    border: 1px solid var(--border);
}

#landing-screen .form {
    display: grid;
    gap: 18px;
}

#landing-screen .field {
    display: grid;
    gap: 6px;
}

#landing-screen .field label {
    font-size: 14px;
    font-weight: 600;
    color: var(--fg);
}

#landing-screen .field input,
#landing-screen .field select,
#landing-screen .field textarea {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 13px 16px;
    width: 100%;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#landing-screen .field input::-moz-placeholder, #landing-screen .field textarea::-moz-placeholder {
    color: var(--muted);
}

#landing-screen .field input::placeholder,
#landing-screen .field textarea::placeholder {
    color: var(--muted);
}

#landing-screen .field input:focus-visible,
#landing-screen .field select:focus-visible,
#landing-screen .field textarea:focus-visible {
    border-color: var(--accent);
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

#landing-screen .form-status {
    font-size: 14px;
    margin: 0;
    min-height: 20px;
    font-weight: 600;
}

#landing-screen .form-status.error {
    color: var(--danger);
}

#landing-screen .form-status.success {
    color: var(--success);
}

/* ─── footer ─────────────────────────────────────────────────────── */
#landing-screen .footer {
    border-top: 1px solid var(--border);
    padding: 48px 0;
    margin-top: 64px;
    background: var(--surface);
}

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

#landing-screen .footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

#landing-screen .footer-link {
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s ease;
}

#landing-screen .footer-link:hover {
    color: var(--fg);
}

#landing-screen .footer small {
    color: var(--muted);
    font-size: 13px;
}

/* ─── responsive ─────────────────────────────────────────────────── */
@media (max-width: 860px) {

    #landing-screen .problem-grid,
    #landing-screen .request-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 32px 24px;
    }

    #landing-screen .cards {
        grid-template-columns: 1fr;
    }

    #landing-screen .nav-links {
        display: none;
    }

    #landing-screen .section {
        padding: 64px 0;
    }

    #landing-screen .hero {
        padding: 64px 0 48px;
    }
}