/* Shared styles for the RGB Sunglasses project site (rgb-sunglasses.autom8ed.com). */

:root {
    --bg: #ffffff;
    --fg: #1a1d23;
    --muted: #565e6b;
    --accent: #6c4bd6;
    --accent-2: #d6417f;
    --card: #f5f7fa;
    --border: #e3e7ee;
    --nav-bg: rgba(255, 255, 255, 0.85);
    --max: 960px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1216;
        --fg: #e7eaf0;
        --muted: #9aa4b2;
        --accent: #a78bfa;
        --accent-2: #f472b6;
        --card: #171b21;
        --border: #262c35;
        --nav-bg: rgba(15, 18, 22, 0.85);
    }
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    font-size: 17px;
}

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

a:hover {
    text-decoration: underline;
}

/* ---- Top navigation ---- */

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: saturate(180%) blur(12px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    font-weight: 700;
    color: var(--fg);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.brand:hover {
    text-decoration: none;
}

.brand-dot {
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 0 10px var(--accent-2);
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    font-size: 0.95rem;
}

.nav-links a {
    color: var(--muted);
}

.nav-links a:hover {
    color: var(--fg);
}

/* ---- Layout ---- */

main {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 1.25rem 4rem;
}

.prose {
    max-width: 720px;
}

/* ---- Hero ---- */

.hero {
    text-align: center;
    padding: 4rem 1.25rem 3rem;
}

.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    line-height: 1.05;
    margin: 0 0 0.75rem;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    color: var(--muted);
    font-size: 1.2rem;
    max-width: 620px;
    margin: 0 auto 2rem;
}

/* ---- Buttons ---- */

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 0.7rem 1.4rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid var(--border);
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    filter: brightness(1.08);
}

.btn-ghost {
    background: var(--card);
    color: var(--fg);
}

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

/* ---- Feature cards ---- */

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin: 2.5rem 0;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.4rem;
}

.card h3 {
    margin: 0 0 0.4rem;
    font-size: 1.15rem;
}

.card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.98rem;
}

.section {
    margin: 3rem 0;
}

.section h2 {
    font-size: 1.5rem;
    margin: 0 0 0.6rem;
}

/* ---- Prose (privacy policy etc.) ---- */

.prose h1 {
    font-size: 1.9rem;
    line-height: 1.2;
    margin: 2rem 0 0.25rem;
}

.prose h2 {
    font-size: 1.25rem;
    margin: 2.25rem 0 0.6rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--border);
}

.prose p,
.prose ul {
    margin: 0.6rem 0;
}

.prose ul {
    padding-left: 1.35rem;
}

.prose li {
    margin: 0.35rem 0;
}

.subtitle {
    color: var(--muted);
    margin: 0.1rem 0 0;
}

.effective {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.tldr {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin: 1.75rem 0;
}

.tldr strong {
    color: var(--fg);
}

code {
    background: var(--card);
    padding: 0.1em 0.35em;
    border-radius: 5px;
    font-size: 0.9em;
}

/* ---- Footer ---- */

footer {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    justify-content: space-between;
    align-items: center;
}

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

footer a:hover {
    color: var(--fg);
}