/* ============================================================
   Music Splitter — "late-night analog studio" theme
   Display: Bricolage Grotesque · Body: Hanken Grotesk · Mono: JetBrains Mono
   ============================================================ */
:root {
  --bg: #0c0b10;
  --bg-2: #131119;
  --panel: #17151f;
  --panel-2: #1f1c2b;
  --line: #ffffff14;
  --line-strong: #ffffff26;
  --text: #f3eee8;
  --muted: #9a92a6;
  --accent: #c8ff4d;        /* VU-meter chartreuse */
  --accent-2: #ff5d8f;      /* hot pink secondary */
  --accent-ink: #14160a;    /* text on accent */
  --danger: #ff6b6b;
  --ok: #8ef0a8;
  --radius: 16px;
  --shadow: 0 24px 60px -20px #000000b0;
  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Hanken Grotesk", -apple-system, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.5;
  letter-spacing: 0.1px;
  overflow-x: hidden;
}

/* Atmospheric background: layered radial glows + faint grid */
.atmosphere {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 500px at 12% -8%, #2a2342 0%, transparent 60%),
    radial-gradient(800px 520px at 100% 0%, #3a1430 0%, transparent 55%),
    radial-gradient(700px 700px at 80% 110%, #14302e 0%, transparent 55%),
    var(--bg);
}
.atmosphere::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 75%);
  opacity: 0.5;
}
/* Film grain overlay */
.grain {
  position: fixed; inset: -50%; z-index: -1; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Top bar ---- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px clamp(16px, 5vw, 40px);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 10;
  background: linear-gradient(#0c0b10cc, #0c0b1066);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand-name {
  font-family: var(--font-display); font-weight: 800; font-size: 19px;
  letter-spacing: 0.5px;
}
.brand-slash { color: var(--accent); }
.brand-eq { display: inline-flex; align-items: flex-end; gap: 3px; height: 20px; }
.brand-eq i {
  width: 3px; background: var(--accent); border-radius: 2px;
  animation: eq 1.1s ease-in-out infinite;
}
.brand-eq i:nth-child(1){ height: 40%; animation-delay: -0.2s; }
.brand-eq i:nth-child(2){ height: 90%; animation-delay: -0.5s; background: var(--accent-2); }
.brand-eq i:nth-child(3){ height: 60%; animation-delay: -0.1s; }
.brand-eq i:nth-child(4){ height: 100%; animation-delay: -0.7s; }
@keyframes eq { 0%,100%{ transform: scaleY(0.35);} 50%{ transform: scaleY(1);} }
@media (prefers-reduced-motion: reduce){ .brand-eq i{ animation: none; } }

.topnav { display: flex; gap: clamp(10px, 3vw, 22px); align-items: center; }
.topnav a {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500;
  padding: 6px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s;
}
.topnav a:hover { color: var(--text); border-color: var(--accent); }
.topnav .logout { color: #b98; }

/* ---- Layout ---- */
.container {
  max-width: 920px; margin: clamp(24px, 6vw, 56px) auto; padding: 0 clamp(16px, 5vw, 24px);
  animation: rise .5s ease both;
}
@keyframes rise { from{ opacity: 0; transform: translateY(14px);} to{ opacity: 1; transform: none;} }

.card {
  position: relative;
  background: linear-gradient(160deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(22px, 5vw, 34px); box-shadow: var(--shadow); margin-bottom: 22px;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  padding: 1px; pointer-events: none;
  background: linear-gradient(160deg, #ffffff22, transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.auth-card { max-width: 420px; margin: clamp(40px, 12vh, 120px) auto; }

h1 {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(26px, 5vw, 38px); line-height: 1.05; margin: 0 0 8px;
  letter-spacing: -0.5px;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent); margin: 0 0 14px;
}
.muted { color: var(--muted); }
.error {
  color: var(--danger); background: #ff6b6b14; border: 1px solid #ff6b6b33;
  padding: 10px 14px; border-radius: 10px; font-size: 14px;
}
.notice {
  color: var(--ok); background: #8ef0a814; border: 1px solid #8ef0a833;
  padding: 10px 14px; border-radius: 10px; font-size: 14px;
}
label.check { flex-direction: row; align-items: center; gap: 10px; color: var(--text); cursor: pointer; }
label.check input { width: auto; }

.shared-tag {
  display: inline-block; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .5px; color: var(--accent-2); margin: 2px 0;
}
.tools-panel {
  border: 1px solid var(--line); border-radius: 12px; padding: 6px 14px;
  margin: 14px 0; background: #ffffff08;
}
.tools-panel summary {
  cursor: pointer; font-weight: 600; padding: 8px 0; color: var(--text);
}
.tools-panel[open] summary { margin-bottom: 8px; }
.inline-form { display: flex; gap: 8px; margin: 8px 0; flex-wrap: wrap; }
.inline-form input { flex: 1; min-width: 200px; }
.small-note { font-size: 12px; margin: 2px 0 12px; }

/* ---- Forms ---- */
.stack { display: flex; flex-direction: column; gap: 16px; }
label { display: flex; flex-direction: column; gap: 7px; font-size: 13px; color: var(--muted); font-weight: 500; }
input, textarea {
  background: #0e0c14; border: 1px solid var(--line-strong); color: var(--text);
  border-radius: 12px; padding: 13px 15px; font-size: 15px; width: 100%;
  font-family: var(--font-body); transition: border-color .2s, box-shadow .2s;
}
textarea { font-family: var(--font-mono); font-size: 13px; resize: vertical; line-height: 1.6; }
input::placeholder, textarea::placeholder { color: #6b6477; }
input:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 4px #c8ff4d22;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px; cursor: pointer;
  background: var(--panel-2); color: var(--text); border: 1px solid var(--line-strong);
  border-radius: 12px; padding: 11px 18px; font-size: 14px; font-weight: 600;
  font-family: var(--font-body); text-decoration: none; transition: transform .12s, border-color .2s, background .2s;
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary { background: var(--accent); border-color: transparent; color: var(--accent-ink); }
.btn.primary:hover { box-shadow: 0 8px 24px -8px var(--accent); }
.btn.danger { color: var(--danger); border-color: #ff6b6b40; background: transparent; }
.btn.danger:hover { background: #ff6b6b18; border-color: var(--danger); transform: none; }
.btn.small { padding: 7px 12px; font-size: 12px; border-radius: 9px; }
.btn.small.active { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn.full { width: 100%; padding: 14px; font-size: 15px; }

.linkrow { margin-top: 18px; font-size: 14px; }
.linkrow a { color: var(--accent); text-decoration: none; }
.linkrow a:hover { text-decoration: underline; }

/* ---- Library list ---- */
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 8px; flex-wrap: wrap; }
.song-list { list-style: none; padding: 0; margin: 20px 0 0; display: flex; flex-direction: column; gap: 12px; }
.song-row {
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px;
  background: linear-gradient(150deg, var(--panel-2), #15131d);
  transition: border-color .2s, transform .12s;
}
.song-row:hover { border-color: var(--line-strong); transform: translateX(2px); }
.song-main { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.song-title { font-weight: 600; font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 52vw; }
.song-actions { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
.song-actions form { margin: 0; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--muted); padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: #0e0c14;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.status-done .badge { color: var(--ok); border-color: #8ef0a840; }
.status-done .badge::before { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.status-failed .badge { color: var(--danger); border-color: #ff6b6b40; }
.status-failed .badge::before { background: var(--danger); }
.status-queued .badge::before,
.status-downloading .badge::before,
.status-converting .badge::before,
.status-splitting .badge::before,
.status-encoding .badge::before {
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{ opacity: .35; } 50%{ opacity: 1; } }

.empty {
  text-align: center; padding: 40px 20px; color: var(--muted);
  border: 1px dashed var(--line-strong); border-radius: 14px; margin-top: 18px;
}

/* Progress bar (library rows while processing) */
.progressbar {
  margin-top: 8px; height: 7px; width: min(420px, 60vw);
  background: #ffffff14; border-radius: 999px; overflow: hidden;
}
.progressbar > span {
  display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .6s ease;
}
.progressbar.indeterminate > span {
  width: 35%; animation: slide 1.3s ease-in-out infinite;
}
@keyframes slide { 0% { margin-left: -35%; } 100% { margin-left: 100%; } }

/* ---- Song / mixer ---- */
.crumbs { margin-bottom: 14px; }
.mixer { display: flex; flex-direction: column; gap: 14px; margin-top: 22px; }
.track {
  background: linear-gradient(150deg, var(--panel-2), #14121c);
  border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px;
  transition: border-color .2s;
}
.track:hover { border-color: var(--line-strong); }
.track-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.track-name {
  font-family: var(--font-display); font-weight: 700; text-transform: capitalize;
  min-width: 96px; font-size: 16px;
}
.track-head .spacer { flex: 1; }
.wave { margin-top: 12px; border-radius: 8px; overflow: hidden; min-height: 56px; }

/* Track on/off toggle */
.track-toggle {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  background: none; border: 0; color: var(--text); padding: 0; font: inherit;
}
.track-toggle .dot {
  width: 12px; height: 12px; border-radius: 50%; flex: none;
  background: var(--accent); box-shadow: 0 0 10px var(--accent); transition: all .2s;
}
.track.off .track-toggle .dot { background: #4a4658; box-shadow: none; }
.track.off { opacity: 0.5; }
.track.off .wave { filter: grayscale(1); }
.track-play { white-space: nowrap; }

.mix-tools { display: flex; gap: 8px; margin: 18px 0 4px; }

/* Sticky transport bar — always visible so Play is never hidden */
.transport-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; align-items: center; gap: 12px;
  padding: 14px clamp(16px, 5vw, 32px);
  padding-bottom: calc(14px + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(#12101a00, #0b0a10 30%);
  backdrop-filter: blur(10px); border-top: 1px solid var(--line-strong);
}
.transport-bar .btn { min-width: 96px; }
.now-playing {
  font-family: var(--font-mono); font-size: 12px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}
/* keep last card clear of the fixed bar */
main .card:last-of-type { margin-bottom: 96px; }

@media (max-width: 768px) {
  .song-title { max-width: 44vw; }
  .track-name { min-width: 72px; font-size: 14px; }
  .track-head { gap: 6px; }
}