/* ============================================================================
   assets/css/landing.css — Public landing page
   Spotify-inspired dark marketing skin: black canvas, #181818 cards,
   #1DB954 accent, #FFD700 highlight. One type scale, pill buttons.
   ========================================================================== */

:root {
    --bg:         #000000;
    --bg-raised:  #121212;
    --card:       #181818;
    --card-hover: #1f1f1f;
    --line:       rgba(255, 255, 255, 0.1);
    --text:       #ffffff;
    --text-soft:  #b3b3b3;
    --text-mute:  #8f8f8f;
    --accent:     #1DB954;
    --accent-hi:  #1ED760;
    --gold:       #FFD700;
    --danger:     #f15e6c;
    --radius:     8px;
    --ease:       cubic-bezier(0.3, 0, 0.2, 1);
    --nav-h:      68px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.landing-body {
    margin: 0;
    min-height: 100vh;
    font-family: "Circular Std", "Inter", -apple-system, BlinkMacSystemFont,
                 "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Subtle green wash behind the hero, like a playlist header. */
body.landing-body::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 640px;
    background:
        radial-gradient(70% 100% at 70% -10%, rgba(29, 185, 84, 0.22), transparent 70%),
        radial-gradient(50% 80% at 10% 0%, rgba(255, 215, 0, 0.08), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

a { color: inherit; }

img { max-width: 100%; }

.muted { color: var(--text-soft); }

/* ------------------------------------------------------------------ */
/*  Nav                                                               */
/* ------------------------------------------------------------------ */
.landing-nav {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.landing-nav-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    max-width: 1200px;
    height: var(--nav-h);
    margin: 0 auto;
    padding: 0 24px;
    padding-top: env(safe-area-inset-top);
}

.landing-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    color: #fff;
    flex: none;
}
.landing-brand:hover { color: #fff; text-decoration: none; }

.landing-brand-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--accent);
    color: #000;
    flex: none;
}
.landing-brand-icon .icon { width: 19px; height: 19px; }

.landing-brand-text span.accent { color: var(--accent); }

.landing-nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-left: auto;
}
.landing-nav-links a {
    color: var(--text-soft);
    text-decoration: none;
    font-size: 0.86rem;
    font-weight: 600;
    transition: color 150ms var(--ease);
}
.landing-nav-links a:hover { color: #fff; text-decoration: none; }

.landing-nav-cta { flex: none; }

/* ------------------------------------------------------------------ */
/*  Buttons                                                           */
/* ------------------------------------------------------------------ */
.landing-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    border-radius: 999px;
    font-family: inherit;
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.02em;
    line-height: 1;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 150ms var(--ease), background 150ms var(--ease),
                color 150ms var(--ease), border-color 150ms var(--ease);
}
.landing-btn .icon { width: 16px; height: 16px; }

.landing-btn-primary { background: var(--accent); color: #000; }
.landing-btn-primary:hover {
    background: var(--accent-hi);
    color: #000;
    transform: scale(1.04);
    text-decoration: none;
}

.landing-btn-ghost { background: transparent; border-color: #6a6a6a; color: #fff; }
.landing-btn-ghost:hover { border-color: #fff; color: #fff; transform: scale(1.02); text-decoration: none; }

.landing-btn-disabled { cursor: default; opacity: 0.8; }
.landing-btn-disabled:hover { transform: none; }

/* ------------------------------------------------------------------ */
/*  Shared card primitive                                             */
/* ------------------------------------------------------------------ */
.glass-card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
}

/* ------------------------------------------------------------------ */
/*  Pending verification / voice-part picker                          */
/* ------------------------------------------------------------------ */
.landing-pending {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 24px auto 0;
    padding: 18px 22px;
    display: grid;
    gap: 6px;
    border-color: rgba(255, 215, 0, 0.28);
}
.landing-pending strong {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gold);
    font-size: 0.9rem;
}
.landing-pending strong .icon { width: 17px; height: 17px; }
.landing-pending span { color: var(--text-soft); font-size: 0.84rem; line-height: 1.55; }

.landing-part {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 16px auto 0;
    padding: 22px 24px;
    display: grid;
    gap: 12px;
}
.landing-part strong { display: flex; align-items: center; gap: 8px; font-size: 0.95rem; }
.landing-part strong .icon { width: 18px; height: 18px; color: var(--accent); }
.landing-part .muted { font-size: 0.84rem; line-height: 1.55; }
.landing-part .landing-btn { justify-self: start; }

.landing-part-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
}
.landing-part-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #1f1f1f;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: border-color 150ms var(--ease), background 150ms var(--ease);
}
.landing-part-option:hover { background: #262626; border-color: rgba(255, 255, 255, 0.3); }
.landing-part-option:has(input:checked) { border-color: var(--accent); background: rgba(29, 185, 84, 0.12); }
.landing-part-option input { accent-color: var(--accent); }
.landing-part-dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.landing-part-error { color: var(--danger); font-size: 0.8rem; margin: 0; }

/* ------------------------------------------------------------------ */
/*  Hero                                                              */
/* ------------------------------------------------------------------ */
main { position: relative; z-index: 1; }

.landing-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(56px, 9vh, 104px) 24px clamp(48px, 7vh, 80px);
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 18px;
}

.landing-h1 {
    margin: 0 0 20px;
    font-size: clamp(2.5rem, 5.6vw, 4.4rem);
    line-height: 0.98;
    font-weight: 900;
    letter-spacing: -0.045em;
    text-wrap: balance;
}
.grad-text { color: var(--text); }
.accent { color: var(--accent); }

.landing-subtitle {
    margin: 0 0 30px;
    max-width: 34rem;
    font-size: clamp(1rem, 1.5vw, 1.12rem);
    line-height: 1.6;
    color: var(--text-soft);
}

.landing-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* Metrics */
.landing-metrics {
    display: flex;
    gap: clamp(28px, 5vw, 56px);
    margin-top: 44px;
}
.metric { display: grid; gap: 2px; }
.metric strong {
    font-size: 1.7rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: #fff;
    font-variant-numeric: tabular-nums;
}
.metric span {
    color: var(--text-mute);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Hero artwork collage */
.hero-visual {
    position: relative;
    min-height: 380px;
}

.hero-tiles {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 14px;
}
.hero-tile {
    border-radius: 8px;
    display: grid;
    place-items: center;
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.55);
}
.hero-tile .icon { width: 34%; height: 34%; stroke-width: 1.4; }
.hero-tile--a { grid-row: span 2; background: linear-gradient(150deg, #1DB954, #0b6b33); color: rgba(0, 0, 0, 0.82); }
.hero-tile--b { background: linear-gradient(150deg, #FFD700, #a67c00); color: rgba(0, 0, 0, 0.82); }
.hero-tile--c { background: linear-gradient(150deg, #a855f7, #4c1d95); color: rgba(255, 255, 255, 0.88); }

.hero-player {
    position: absolute;
    left: 50%;
    bottom: -18px;
    transform: translateX(-50%);
    width: min(400px, 94%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    background: rgba(24, 24, 24, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow: 0 22px 54px rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
}
.hero-player-art {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    flex: none;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #1DB954, #0b6b33);
    color: #000;
}
.hero-player-art .icon { width: 18px; height: 18px; }
.hero-player-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1; }
.hero-player-text strong {
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hero-player-text small { font-size: 0.7rem; color: var(--text-soft); }
.hero-player-play {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #fff;
    color: #000;
    display: grid;
    place-items: center;
    flex: none;
}
.hero-player-play .icon { width: 14px; height: 14px; }

.hero-player-faders {
    position: absolute;
    right: 14px;
    bottom: -6px;
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 26px;
    opacity: 0.5;
}
.hero-player-faders i {
    width: 3px;
    height: var(--h, 40%);
    border-radius: 2px;
    background: var(--accent);
}

/* ------------------------------------------------------------------ */
/*  Sections                                                          */
/* ------------------------------------------------------------------ */
.landing-features {
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(32px, 6vh, 64px) 24px 0;
}

.section-head { margin-bottom: 28px; }
.landing-h2 {
    margin: 0 0 8px;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
}
.section-head p { margin: 0; color: var(--text-soft); font-size: 0.92rem; }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.feature-card {
    padding: 22px 20px;
    transition: background 180ms var(--ease), transform 180ms var(--ease);
}
.feature-card:hover { background: var(--card-hover); transform: translateY(-4px); }

.feature-icon {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    margin-bottom: 16px;
    border-radius: 50%;
    background: var(--accent);
    color: #000;
}
.feature-icon .icon { width: 22px; height: 22px; }

.feature-card h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}
.feature-card p { margin: 0; color: var(--text-soft); font-size: 0.86rem; line-height: 1.6; }

/* Repertoire strip */
.landing-strip {
    max-width: 1200px;
    margin: clamp(40px, 7vh, 72px) auto 0;
    padding: 0 24px;
}
.landing-strip-card {
    padding: clamp(28px, 4vw, 44px);
    background:
        linear-gradient(120deg, rgba(29, 185, 84, 0.14), rgba(24, 24, 24, 0.9) 58%),
        var(--card);
    border-color: rgba(29, 185, 84, 0.22);
}
.landing-strip-card .landing-h2 { margin-bottom: 12px; }
.landing-strip-card p {
    color: var(--text-soft);
    font-size: 0.92rem;
    line-height: 1.65;
    max-width: 680px;
    margin: 0 0 22px;
}

.landing-genres { display: flex; gap: 8px; flex-wrap: wrap; }
.genre-chip {
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
}

/* ------------------------------------------------------------------ */
/*  Footer                                                            */
/* ------------------------------------------------------------------ */
.landing-footer {
    margin-top: clamp(56px, 9vh, 96px);
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    background: var(--bg-raised);
    padding: 44px 24px calc(24px + env(safe-area-inset-bottom));
}
.landing-footer-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}
.landing-footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 0.95rem;
}
.landing-footer-brand .icon { width: 18px; height: 18px; color: var(--accent); }
.footer-heading {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-mute);
    margin-bottom: 12px;
}
.landing-footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.landing-footer-col a { color: var(--text-soft); text-decoration: none; font-size: 0.86rem; }
.landing-footer-col a:hover { color: #fff; text-decoration: underline; }
.landing-footer-col .lightning { font-size: 0.84rem; color: var(--text-soft); margin: 0 0 12px; line-height: 1.55; }
.landing-footer .muted { color: var(--text-soft); font-size: 0.84rem; margin: 8px 0 0; }
.landing-copyright {
    max-width: 1200px;
    margin: 32px auto 0;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-mute);
    font-size: 0.76rem;
}

/* ------------------------------------------------------------------ */
/*  Responsive                                                        */
/* ------------------------------------------------------------------ */
@media (max-width: 900px) {
    .landing-hero {
        grid-template-columns: minmax(0, 1fr);
        padding-top: 40px;
        gap: 40px;
    }
    .hero-visual { min-height: 320px; max-width: 480px; width: 100%; margin: 0 auto; }
    .landing-nav-links { display: none; }
    .landing-nav-cta { margin-left: auto; }
}

@media (max-width: 560px) {
    .landing-nav-inner { padding: 0 16px; gap: 12px; }
    .landing-brand-text { font-size: 0.98rem; }
    .landing-hero { padding-left: 16px; padding-right: 16px; }
    .landing-features, .landing-strip { padding-left: 16px; padding-right: 16px; }
    .landing-btn { padding: 11px 22px; }
    .landing-cta .landing-btn { flex: 1 1 auto; }
    .landing-metrics { gap: 22px; flex-wrap: wrap; }
    .metric strong { font-size: 1.45rem; }
    .hero-player-faders { display: none; }
    .landing-footer { padding-left: 16px; padding-right: 16px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .landing-btn, .feature-card { transition: none; }
}