/* =================================================================
   LexiSmash — sito statico dell'organizzazione GitHub (repo .github)
   -----------------------------------------------------------------
   Identità visiva DELIBERATAMENTE diversa da quella del gioco vero
   (lexismash.it): niente rosa/teal, niente font/tessere del gioco.
   Palette ambra/indaco, font di sistema (nessuna dipendenza esterna,
   nessun Google Fonts) — pagina di community/organizzazione, non
   materiale del prodotto.
   ================================================================= */

:root {
    --bg: #faf9f6;
    --surface: #ffffff;
    --surface-alt: #f1eee7;
    --text: #201c2e;
    --text-muted: #5b5670;
    --border: #e5e0d5;
    --accent: #4f46e5;
    --accent-strong: #3730a3;
    --accent-soft: #eeedfd;
    --amber: #f59e0b;
    --amber-strong: #b45309;
    --shadow: 0 20px 45px -20px rgba(32, 28, 46, 0.25);
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
    --font-display: ui-serif, Georgia, "Times New Roman", serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

html[data-theme="dark"] {
    --bg: #121022;
    --surface: #1b1830;
    --surface-alt: #241f3d;
    --text: #f4f2fb;
    --text-muted: #b3adca;
    --border: #322c4d;
    --accent: #8b7bf7;
    --accent-strong: #a498ff;
    --accent-soft: #2a2450;
    --amber: #fbbf24;
    --amber-strong: #f59e0b;
    --shadow: 0 20px 45px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    transition: background 0.25s ease, color 0.25s ease;
}

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

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---------- Topbar ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text);
}
.brand img { width: 32px; height: 32px; border-radius: 8px; }

.topbar-controls {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-size: 1.1rem;
    transition: background 0.2s ease, transform 0.15s ease, border-color 0.2s ease;
}
.icon-btn:hover { transform: translateY(-1px); border-color: var(--accent); }

.lang-select {
    appearance: none;
    -webkit-appearance: none;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    padding: 0.45rem 2rem 0.45rem 0.9rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    background-image: linear-gradient(45deg, transparent 50%, var(--text-muted) 50%), linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
    background-position: calc(100% - 14px) 55%, calc(100% - 9px) 55%;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
}

/* ---------- Hero ---------- */
.hero {
    padding: 5.5rem 0 4.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: -20% -10% auto -10%;
    height: 420px;
    background: radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--amber) 35%, transparent), transparent 60%),
                radial-gradient(circle at 75% 20%, color-mix(in srgb, var(--accent) 35%, transparent), transparent 55%);
    filter: blur(10px);
    z-index: -1;
}
.eyebrow {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 1.4rem;
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5.5vw, 3.6rem);
    line-height: 1.1;
    margin: 0 0 1.1rem;
    letter-spacing: -0.01em;
}
.hero h1 .accent-word {
    background: linear-gradient(100deg, var(--accent), var(--amber));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero p.subtitle {
    max-width: 620px;
    margin: 0 auto 2.2rem;
    color: var(--text-muted);
    font-size: 1.15rem;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.98rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary {
    background: linear-gradient(100deg, var(--accent), var(--accent-strong));
    color: #fff;
    box-shadow: 0 12px 30px -12px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--accent); }

/* ---------- Sections ---------- */
section { padding: 3.5rem 0; }
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.1rem);
    margin: 0 0 0.6rem;
    text-align: center;
}
.section-lede {
    text-align: center;
    color: var(--text-muted);
    max-width: 620px;
    margin: 0 auto 2.6rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.2rem;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.6rem;
    box-shadow: var(--shadow);
}
.feature-card .emoji {
    font-size: 1.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 999px;
    background: var(--accent-soft);
    margin-bottom: 1rem;
}
.feature-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
}
.feature-card p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.2rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.8rem;
    justify-content: space-between;
}
.panel-text { flex: 1 1 320px; }
.panel h2 {
    font-family: var(--font-display);
    margin: 0 0 0.6rem;
    font-size: 1.5rem;
}
.panel p { color: var(--text-muted); margin: 0; }
.panel-emoji {
    font-size: 2.6rem;
    flex: 0 0 auto;
}

.panel + .panel { margin-top: 1.4rem; }

/* ---------- Footer ---------- */
footer {
    border-top: 1px solid var(--border);
    padding: 2.4rem 0 3rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.88rem;
}
footer a { color: var(--text-muted); }
footer .footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.4rem 1.2rem;
    margin-bottom: 0.8rem;
}

@media (max-width: 640px) {
    .topbar-inner { flex-wrap: wrap; }
    .hero { padding: 4rem 0 3rem; }
}