/* ---------- Theme tokens ---------- */
:root {
    --bg: #f6f7fb;
    --bg-elevated: #ffffff;
    --bg-soft: #eef1f7;
    --text: #14161f;
    --text-muted: #5a5f74;
    --border: rgba(20, 22, 31, 0.09);
    --accent: #3b6fed;
    --accent-2: #7c5cff;
    --accent-3: #14b8b8;
    --shadow: 0 10px 30px rgba(20, 22, 31, 0.08);
    --shadow-lg: 0 20px 45px rgba(20, 22, 31, 0.14);
    --radius: 18px;
    --font-body: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

:root[data-theme="dark"] {
    --bg: #0a0c13;
    --bg-elevated: #12151f;
    --bg-soft: #171b28;
    --text: #eef1f8;
    --text-muted: #9aa1ba;
    --border: rgba(255, 255, 255, 0.09);
    --accent: #7099ff;
    --accent-2: #a78bfa;
    --accent-3: #35e0d0;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 24px 55px rgba(0, 0, 0, 0.55);
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.35s ease, color 0.35s ease;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

img { max-width: 100%; }

a { color: inherit; }

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.15;
    margin: 0;
}

p { line-height: 1.6; color: var(--text-muted); margin: 0; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.98rem;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
    color: #fff;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    box-shadow: 0 12px 24px rgba(59, 111, 237, 0.28);
}

.btn-primary:hover { box-shadow: 0 16px 32px rgba(59, 111, 237, 0.38); }

.btn-ghost {
    color: var(--text);
    background: var(--bg-elevated);
    border-color: var(--border);
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Scroll reveal ---------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(.2,.7,.2,1), transform 0.7s cubic-bezier(.2,.7,.2,1);
    transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Shared section heading ---------- */
.section-heading {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 2.5rem;
}

.section-heading h2 {
    font-size: clamp(1.7rem, 4vw, 2.3rem);
    margin-bottom: 0.6rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-app {
    color: #0f9d58;
    background: rgba(15, 157, 88, 0.12);
}

.badge-archived {
    color: var(--text-muted);
    background: var(--bg-soft);
}

/* ---------- Footer ---------- */
.site-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1100px;
    margin: 3rem auto 0;
    padding: 2rem 1.5rem 3rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.site-footer p { margin: 0; color: var(--text-muted); }

.footer-links {
    display: flex;
    gap: 1rem;
    font-size: 1.1rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
    display: inline-flex;
}

.footer-links a:hover { color: var(--accent); transform: translateY(-2px); }