:root {
    /* Default to LIGHT theme */
    color-scheme: light dark;
    /* Light theme tokens */
    --bg: #f7f8fb; /* app background */
    --panel: #ffffff; /* cards/sections */
    --text: #0f172a; /* slate-900 */
    --muted: rgba(15, 23, 42, 0.68);
    --border: rgba(15, 23, 42, 0.12);
    --shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
    --accent: #2563eb;
    --accent-2: #6e93e2;
    --radius: 18px;
    --radius-sm: 12px;
    --max: 1120px;
    --space-1: 8px;
    --space-2: 12px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 32px;
    --space-6: 48px;
    --grad-left: rgba(37, 99, 235, 0.12);
    --grad-right: rgba(20, 184, 166, 0.10);
    --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Optional DARK mode support (automatic when OS is dark) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0b0c0f;
        --panel: #11131a;
        --text: #f4f6ff;
        --muted: rgba(244, 246, 255, 0.72);
        --border: rgba(244, 246, 255, 0.12);
        --shadow: 0 18px 50px rgba(0,0,0,0.35);
        --accent: #2563eb;
        --accent-2: #6e93e2;
        --grad-left: rgb(37 99 235 / 0.12);
        --grad-right: rgba(20, 184, 166, 0.10);
    }
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

    body::before {
        content: "";
        position: fixed;
        inset: 0; /* top:0; right:0; bottom:0; left:0 */
        z-index: -1;
        pointer-events: none;
        background: radial-gradient(1100px 650px at 12% -10%, var(--grad-left), transparent 55%), radial-gradient(900px 600px at 92% 0%, var(--grad-right), transparent 55%), var(--bg);
        background-repeat: no-repeat;
    }

main {
    flex: 1;
}

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

    a:hover {
        text-decoration: underline;
    }

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Accessibility */
.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--panel);
    border: 1px solid var(--border);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
}

    .skip-link:focus {
        left: var(--space-4);
        top: var(--space-4);
        z-index: 999;
    }

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    /* Light: slightly translucent */
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
    gap: var(--space-3);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-logo {
    width: 28px;
    height: 28px;
}

.brand-name {
    font-size: 16px;
}

.nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

    .nav-menu a {
        padding: 10px 10px;
        border-radius: 10px;
    }

        .nav-menu a:hover {
            background: color-mix(in srgb, var(--panel) 85%, transparent);
            text-decoration: none;
        }

.nav-toggle {
    display: none;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--panel) 85%, transparent);
    border-radius: 12px;
    padding: 10px 12px;
}

.nav-toggle-bars {
    display: inline-block;
    width: 18px;
    height: 12px;
    background: linear-gradient(currentColor, currentColor) 0 0/100% 2px, linear-gradient(currentColor, currentColor) 0 50%/100% 2px, linear-gradient(currentColor, currentColor) 0 100%/100% 2px;
    background-repeat: no-repeat;
    opacity: 0.9;
}

.sr-only {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* Hero */
.hero {
    padding: var(--space-6) 0 var(--space-6);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-5);
    align-items: start;
}

.eyebrow {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    margin: 0 0 var(--space-2);
    color: var(--muted);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1 {
    margin: 0 0 var(--space-2);
    font-size: clamp(32px, 4.2vw, 52px);
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.lead {
    margin: 0 0 var(--space-4);
    color: var(--muted);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-bottom: var(--space-3);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--panel) 90%, transparent);
    font-weight: 650;
}

    .btn:hover {
        text-decoration: none;
        filter: brightness(1.02);
    }

    .btn.primary {
        border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
        color: #ffffff;
        background: linear-gradient(135deg, var(--accent), var(--accent-2));
        box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
    }

.fineprint {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

    .fineprint a {
        text-decoration: underline;
    }

/* Sections */
.section {
    padding: var(--space-6) 0;
}

    .section.alt {
        background: color-mix(in srgb, var(--panel) 92%, transparent);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

.section-header {
    margin-bottom: var(--space-4);
}

    .section-header h2 {
        margin: 0 0 8px;
        font-size: 28px;
        letter-spacing: -0.03em;
    }

.muted {
    color: var(--muted);
}

.small {
    font-size: 13px;
}

/* Layout grids */
.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

/* Cards */
.card {
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--panel) 94%, transparent);
    border-radius: var(--radius);
    padding: var(--space-4);
    box-shadow: var(--shadow);
}

.card-title {
    margin: 0 0 var(--space-2);
    font-size: 16px;
}

.card h3 {
    margin: 0 0 10px;
    font-size: 18px;
    letter-spacing: -0.02em;
}

.h3 {
    font-size: 18px;
    letter-spacing: -0.02em;
}

.bullets {
    margin: 12px 0 0;
    padding-left: 18px;
    color: var(--muted);
}

    .bullets li {
        margin: 8px 0;
    }

.card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-3);
    gap: var(--space-2);
}

.link {
    font-weight: 700;
    text-decoration: underline;
}

.badge {
    font-size: 12px;
    color: color-mix(in srgb, var(--text) 85%, transparent);
    border: 1px solid var(--border);
    padding: 6px 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--panel) 90%, transparent);
}

/* Key/value list */
.kv {
    margin: 0;
    display: grid;
    gap: var(--space-2);
}

    .kv > div {
        display: grid;
        grid-template-columns: 140px 1fr;
        gap: var(--space-2);
        padding: 8px 0;
        border-bottom: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
    }

        .kv > div:last-child {
            border-bottom: none;
        }

    .kv dt {
        color: var(--muted);
        font-size: 13px;
    }

    .kv dd {
        margin: 0;
        font-weight: 650;
    }

/* Forms */
.form {
    display: grid;
    gap: var(--space-3);
}

label span {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 13px;
}

input, textarea {
    width: 100%;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 65%, var(--panel));
    color: var(--text);
    padding: 12px 14px;
    outline: none;
}

    input:focus, textarea:focus {
        border-color: color-mix(in srgb, var(--accent) 65%, var(--border));
        box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
    }

.honeypot {
    display: none;
}

/* Content pages */
.content {
    max-width: 820px;
}

    .content h1 {
        font-size: 40px;
        margin-top: 0;
    }

    .content h2 {
        margin-top: 26px;
        letter-spacing: -0.02em;
    }

/* FAQ */
.faq details {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 14px;
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    margin: 12px 0;
}

.faq summary {
    cursor: pointer;
    font-weight: 700;
}

.faq p {
    color: var(--muted);
    margin: 10px 0 0;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: var(--space-2) 0;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.footer-logo {
    width: 22px;
    height: 22px;
    opacity: 0.9;
}

.footer-name {
    font-weight: 800;
    letter-spacing: -0.02em;
}

.footer-legal {
    color: var(--muted);
    font-size: 13px;
}

.footer-right {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

    .footer-right a {
        color: var(--muted);
    }

        .footer-right a:hover {
            color: var(--text);
            text-decoration: none;
        }

/* Responsive */
@media (max-width: 960px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    .two-col {
        grid-template-columns: 1fr;
    }

    .kv > div {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .nav-toggle {
        display: inline-flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        right: var(--space-4);
        top: 68px;
        flex-direction: column;
        min-width: 220px;
        border: 1px solid var(--border);
        background: color-mix(in srgb, var(--bg) 92%, transparent);
        border-radius: 16px;
        padding: 10px;
        box-shadow: var(--shadow);
    }

        .nav-menu.is-open {
            display: flex;
        }

        .nav-menu a {
            width: 100%;
        }
}