/* AGI-ONE Podcast — stile del portale pubblico.
   Token del design system AGI-ONE (gradiente #667eea → #764ba2, Inter/Outfit).
   Tema scuro di default; [data-theme="light"] per il chiaro. */

:root {
    --primary: #667eea;
    --primary-2: #764ba2;
    --accent: #8b5cf6;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);

    --bg: #090b1a;
    --bg-2: #0e1126;
    --surface: #131735;
    --surface-2: #1a1f45;
    --line: rgba(255, 255, 255, 0.1);
    --text: #f1f3fb;
    --muted: #9aa3bd;
    --focus: #a5b4fc;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --radius: 16px;
    --player-h: 84px;

    color-scheme: dark;
}

[data-theme="light"] {
    --bg: #f4f6fb;
    --bg-2: #eef1f8;
    --surface: #ffffff;
    --surface-2: #f2f4fb;
    --line: rgba(17, 24, 39, 0.1);
    --text: #111827;
    --muted: #586178;
    --focus: #4f46e5;
    --shadow: 0 10px 30px rgba(17, 24, 39, 0.1);
    color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

/* `hidden` deve vincere su display di .btn/.player ecc. */
[hidden] { display: none !important; }

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

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    background:
        radial-gradient(1200px 500px at 10% -10%, rgba(102, 126, 234, 0.18), transparent 60%),
        radial-gradient(900px 400px at 100% 0%, rgba(118, 75, 162, 0.16), transparent 60%),
        var(--bg);
    color: var(--text);
    line-height: 1.55;
    min-height: 100vh;
    padding-bottom: calc(var(--player-h) + 16px);
}

a { color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 6px; }

.skip-link {
    position: absolute;
    left: -999px;
    top: 8px;
    background: var(--surface);
    padding: 8px 12px;
    border-radius: 8px;
    z-index: 100;
}
.skip-link:focus { left: 8px; }

.container { width: min(1120px, 100% - 32px); margin-inline: auto; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ------------------------------------------------------------- header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(12px);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    border-bottom: 1px solid var(--line);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: 64px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: 'Outfit', 'Inter', sans-serif;
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: 0.01em;
}
.brand img { width: 36px; height: 36px; }

.header-actions { display: flex; gap: 6px; align-items: center; }

.icon-btn {
    display: inline-grid;
    place-items: center;
    min-width: 40px;
    height: 40px;
    padding: 0 10px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    cursor: pointer;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
}
.icon-btn:hover { border-color: var(--primary); }

/* --------------------------------------------------------------- hero */

.hero { padding: 56px 0 28px; }
.hero h1 {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.08;
    margin: 0 0 14px;
    letter-spacing: -0.01em;
}
.hero p { color: var(--muted); max-width: 640px; margin: 0; font-size: 1.05rem; }

/* ------------------------------------------------------------ toolbar */

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
    margin: 8px 0 18px;
}

.show-tabs { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
    border: 1px solid var(--line);
    background: var(--surface);
    padding: 7px 14px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.chip[aria-pressed="true"] { background: var(--gradient); border-color: transparent; color: #fff; }
.chip__dot { width: 8px; height: 8px; border-radius: 50%; }

.search {
    position: relative;
    flex: 1 1 260px;
    max-width: 360px;
}
.search input {
    width: 100%;
    padding: 10px 14px 10px 38px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    font: inherit;
}
.search i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
}

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

.featured {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 24px;
    padding: 22px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    margin-bottom: 28px;
}
.featured__eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    font-weight: 700;
}
.featured h2 { font-family: 'Outfit', 'Inter', sans-serif; font-size: 1.7rem; margin: 6px 0 8px; line-height: 1.2; }
.featured p { color: var(--muted); margin: 0 0 16px; }

.cover {
    aspect-ratio: 1;
    border-radius: 12px;
    background: var(--gradient);
    display: grid;
    place-items: center;
    overflow: hidden;
    color: rgba(255, 255, 255, 0.9);
    font-size: 2.4rem;
}
.cover img { width: 100%; height: 100%; object-fit: cover; }

.episode-list { display: grid; gap: 12px; }

.episode {
    display: grid;
    grid-template-columns: 72px 1fr auto;
    gap: 16px;
    align-items: center;
    padding: 14px;
    border-radius: 14px;
    background: var(--surface);
    border: 1px solid var(--line);
}
.episode:hover { border-color: color-mix(in srgb, var(--primary) 50%, var(--line)); }
.episode .cover { font-size: 1.4rem; border-radius: 10px; }
.episode h3 { margin: 0 0 4px; font-size: 1.05rem; line-height: 1.3; }
.episode h3 a { text-decoration: none; }
.episode h3 a:hover { text-decoration: underline; }
.episode p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    color: var(--muted);
    font-size: 0.8rem;
    margin-top: 6px;
}
.meta span { display: inline-flex; gap: 5px; align-items: center; }
.meta .ai-badge { color: var(--primary); font-weight: 600; }

.tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 9px;
    border-radius: 999px;
    background: var(--surface-2);
    color: var(--muted);
    text-decoration: none;
}

.play-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 0;
    background: var(--gradient);
    color: #fff;
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: 1.05rem;
    box-shadow: 0 6px 18px rgba(102, 126, 234, 0.35);
    flex: 0 0 auto;
}
.play-btn:hover { filter: brightness(1.08); }
.play-btn--lg { width: 60px; height: 60px; font-size: 1.3rem; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface-2);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}
.btn--primary { background: var(--gradient); color: #fff; border-color: transparent; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.state {
    padding: 40px 20px;
    text-align: center;
    color: var(--muted);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
}

.pager { display: flex; justify-content: center; margin: 22px 0 8px; }

/* --------------------------------------------------------- episodio */

.episode-page { padding: 36px 0 24px; }
.crumbs { font-size: 0.88rem; color: var(--muted); margin-bottom: 18px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

.episode-head {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 28px;
    align-items: start;
}
.episode-head h1 {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: clamp(1.7rem, 4vw, 2.5rem);
    line-height: 1.15;
    margin: 6px 0 8px;
}
.episode-head .subtitle { color: var(--muted); font-size: 1.08rem; margin: 0 0 14px; }

.prose {
    margin-top: 32px;
    max-width: 760px;
    font-size: 1.02rem;
}
.prose h2, .prose h3 { font-family: 'Outfit', 'Inter', sans-serif; line-height: 1.25; }
.prose a { color: var(--primary); }
.prose ul { padding-left: 1.2em; }

.transcript {
    margin-top: 28px;
    max-width: 760px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}
.transcript summary { cursor: pointer; padding: 14px 18px; font-weight: 700; }
.transcript .prose { margin: 0; padding: 0 18px 18px; }

.related { margin-top: 44px; }
.related h2 { font-family: 'Outfit', 'Inter', sans-serif; }

/* ------------------------------------------------------ player fisso */

.player {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    min-height: var(--player-h);
    background: color-mix(in srgb, var(--bg-2) 92%, transparent);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--line);
}
.player__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) auto minmax(0, 2fr) auto;
    gap: 16px;
    align-items: center;
    padding: 12px 0;
}
.player__info { min-width: 0; }
.player__title {
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-decoration: none;
    display: block;
}
.player__show { color: var(--muted); font-size: 0.8rem; }
.player__controls { display: flex; gap: 6px; align-items: center; }
.player__seek { display: flex; gap: 10px; align-items: center; font-size: 0.78rem; color: var(--muted); }
.player__seek input[type="range"] { flex: 1; accent-color: var(--primary); }
.player__time { font-variant-numeric: tabular-nums; min-width: 42px; text-align: center; }

.ghost-btn {
    border: 0;
    background: transparent;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 0.82rem;
    font-weight: 700;
}
.ghost-btn:hover { background: var(--surface-2); }

/* ------------------------------------------------------------- footer */

.site-footer {
    margin-top: 56px;
    padding: 28px 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.88rem;
}
.site-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.site-footer a { color: var(--muted); }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }

.legal { padding: 40px 0; max-width: 760px; }
.legal h1 { font-family: 'Outfit', 'Inter', sans-serif; }

/* ----------------------------------------------------------- mobile */

@media (max-width: 760px) {
    .featured, .episode-head { grid-template-columns: 1fr; }
    .featured .cover, .episode-head .cover { max-width: 200px; }
    .episode { grid-template-columns: 56px 1fr auto; gap: 12px; }
    .episode p.summary { display: none; }
    .player__inner { grid-template-columns: minmax(0, 1fr) auto; gap: 8px 12px; }
    .player__seek { grid-column: 1 / -1; order: 3; }
    .player__extra { display: none; }
    :root { --player-h: 118px; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}