/* Noted — shared styles for the home and about pages.
   Dependency-free (no fonts, scripts, or trackers fetched from third parties),
   in keeping with Noted's privacy-first, local-only philosophy. */

:root {
    --bg: #ffffff;
    --bg-soft: #f5f6f8;
    --bg-card: #ffffff;
    --text: #1c1e21;
    --text-soft: #5b6068;
    --border: #e3e6ea;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-contrast: #ffffff;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --maxw: 820px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #16181c;
        --bg-soft: #1d2025;
        --bg-card: #1f2228;
        --text: #e9eaec;
        --text-soft: #a4abb5;
        --border: #2d3138;
        --accent: #818cf8;
        --accent-hover: #a5b0fb;
        --accent-contrast: #16181c;
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
    }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 22px;
}

/* ---- Top nav ---- */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    flex-wrap: wrap;
    gap: 12px;
}
.nav .brand {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text);
    letter-spacing: -0.01em;
}
.nav .brand:hover { text-decoration: none; }
.nav .links a {
    color: var(--text-soft);
    margin-left: 22px;
    font-size: 0.95rem;
}
.nav .links a:first-child { margin-left: 0; }
.nav .links a:hover { color: var(--accent); text-decoration: none; }

/* ---- Hero ---- */
.hero {
    text-align: center;
    padding: 56px 0 40px;
}
.hero h1 {
    font-size: clamp(2.1rem, 5vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin: 0 0 16px;
}
.hero .tagline {
    font-size: clamp(1.05rem, 2.5vw, 1.3rem);
    color: var(--text-soft);
    max-width: 600px;
    margin: 0 auto 14px;
}
.badge {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 22px;
}

/* ---- Download buttons ---- */
.downloads {
    display: flex;
    gap: 14px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 30px 0 8px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 600;
    font-size: 1rem;
    padding: 13px 24px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: background 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn.secondary {
    background: var(--bg-card);
    color: var(--text);
    border-color: var(--border);
}
.btn.secondary:hover { background: var(--bg-soft); }
.btn .sub { font-weight: 400; font-size: 0.8rem; opacity: 0.85; }
.btn.disabled {
    background: var(--bg-card);
    color: var(--text-soft);
    border-color: var(--border);
    cursor: not-allowed;
}
.btn.disabled:hover { background: var(--bg-card); }
.btn.disabled:active { transform: none; }

.note-line {
    text-align: center;
    color: var(--text-soft);
    font-size: 0.88rem;
    margin-top: 14px;
}

/* ---- Sections ---- */
section { padding: 40px 0; }
section.alt { background: var(--bg-soft); }
h2 {
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    margin: 0 0 8px;
}
.section-intro {
    color: var(--text-soft);
    margin: 0 auto 28px;
    max-width: 620px;
}
.center { text-align: center; }

/* ---- Feature grid ---- */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}
.card h3 {
    margin: 0 0 6px;
    font-size: 1.05rem;
}
.card p {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.94rem;
}

/* ---- Prose (about) ---- */
.prose h2 { margin-top: 34px; }
.prose p { color: var(--text); }
.prose ul { color: var(--text); padding-left: 22px; }
.prose li { margin: 6px 0; }
code {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 0.88em;
}

/* ---- Footer ---- */
footer {
    border-top: 1px solid var(--border);
    margin-top: 24px;
    padding: 28px 0 40px;
    color: var(--text-soft);
    font-size: 0.9rem;
}
footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
footer a { color: var(--text-soft); }
footer a:hover { color: var(--accent); }