:root {
  --bg: #0e1014;
  --bg-elev: #161922;
  --bg-elev2: #1d212c;
  --bg-side: #12151d;
  --border: #262b37;
  --border-soft: #1f2430;
  --text: #e8eaf0;
  --text-dim: #99a0ad;
  --accent: #ff4d5a;
  --accent-2: #6c8cff;
  --ok: #3ecf8e;
  --warn: #f5a623;
  --err: #ff5d5d;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 34px rgba(0, 0, 0, 0.38);
  --sidebar-w: 268px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: none; }

[x-cloak] { display: none !important; }

/* ------------------------------------------------------------------ shell */
.app { display: flex; min-height: 100vh; }

.sidebar {
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  background: var(--bg-side);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  gap: 16px;
}

.brand {
  display: flex; align-items: center; gap: 11px;
  font-weight: 800; font-size: 19px; letter-spacing: .2px;
  color: var(--text); padding: 4px 6px;
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 34px; height: 34px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #ff7b46);
  border-radius: 10px; font-size: 18px;
  box-shadow: 0 6px 18px rgba(255, 77, 90, .35);
}

.newproj { width: 100%; }

.side-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-dim);
  padding: 4px 8px; margin-top: 2px;
}

.side-nav { display: flex; flex-direction: column; gap: 3px; overflow-y: auto; flex: 1; margin: 0 -4px; padding: 0 4px; }
.side-link {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 11px; border-radius: var(--radius-sm);
  color: var(--text-dim); font-size: 14px; font-weight: 500;
  transition: background .13s, color .13s;
}
.side-link:hover { background: var(--bg-elev); color: var(--text); text-decoration: none; }
.side-link.active { background: var(--bg-elev2); color: var(--text); font-weight: 600; box-shadow: inset 3px 0 0 var(--accent); }
.side-link-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-count {
  flex: 0 0 auto; font-size: 11px; font-weight: 700;
  background: var(--bg); color: var(--text-dim);
  padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border-soft);
}
.side-empty { color: var(--text-dim); font-size: 13px; padding: 10px 11px; }

.side-foot {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.side-user { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); min-width: 0; padding: 0 2px; }
.side-user span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-foot-actions { display: flex; flex-direction: column; gap: 6px; }
.side-foot-actions .btn { width: 100%; }

.main {
  flex: 1; min-width: 0;
  padding: 40px 44px 90px;
  max-width: 1080px;
}

/* mobile top bar (hidden on desktop) */
.mobilebar { display: none; }
.backdrop { display: none; }
.iconbtn {
  background: var(--bg-elev2); border: 1px solid var(--border); color: var(--text);
  width: 40px; height: 40px; border-radius: 10px; font-size: 18px; cursor: pointer;
}

/* ------------------------------------------------------------- typography */
h1 { font-size: 27px; margin: 0 0 6px; letter-spacing: -.02em; }
h2 { font-size: 18px; margin: 0 0 14px; }
.subtitle { color: var(--text-dim); margin: 0 0 26px; }

.page-head { margin-bottom: 26px; display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.crumb { color: var(--text-dim); font-size: 13px; margin-bottom: 10px; display: inline-flex; align-items: center; gap: 6px; }

/* --------------------------------------------------------------- surfaces */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 18px; }
.card-title { display: flex; align-items: center; gap: 9px; }

label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }

input, select, textarea {
  width: 100%;
  background: var(--bg-elev2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 11px 13px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(108, 140, 255, 0.15);
}
input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }

.row { display: flex; gap: 12px; }
.row > * { flex: 1; }
.field { margin-bottom: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: white;
  transition: transform .05s, filter .15s, background .15s, border-color .15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.secondary { background: var(--bg-elev2); color: var(--text); border-color: var(--border); }
.btn.secondary:hover { border-color: var(--accent-2); filter: none; }
.btn.ghost { background: transparent; color: var(--text-dim); border-color: var(--border); }
.btn.ghost:hover { color: var(--text); filter: none; }
.btn.danger { background: transparent; color: var(--err); border-color: rgba(255,93,93,.4); }
.btn.danger:hover { background: rgba(255,93,93,.1); filter: none; }
.btn.sm { padding: 7px 12px; font-size: 13px; }

.muted { color: var(--text-dim); font-size: 13px; }
.error { color: var(--err); font-size: 13px; margin-top: 8px; }
.center { text-align: center; }

/* ------------------------------------------------------------- auth pages */
.auth-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background: radial-gradient(1000px 500px at 50% -10%, #1a1d27 0%, var(--bg) 60%);
}
.auth-card { width: 100%; max-width: 390px; }
.auth-logo {
  width: 52px; height: 52px; display: grid; place-items: center; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent), #ff7b46);
  border-radius: 14px; font-size: 26px; box-shadow: 0 8px 22px rgba(255,77,90,.4);
}

/* ------------------------------------------------------------ project grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.project-tile {
  position: relative; display: block;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .15s, transform .1s, box-shadow .15s;
}
.project-tile:hover { border-color: var(--accent-2); text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); }
.project-tile .picon {
  width: 40px; height: 40px; display: grid; place-items: center; margin-bottom: 12px;
  background: var(--bg-elev2); border: 1px solid var(--border); border-radius: 11px; font-size: 20px;
}
.project-tile .pname { font-weight: 700; color: var(--text); font-size: 16px; }
.project-tile .pmeta { color: var(--text-dim); font-size: 13px; margin-top: 6px; }

/* --------------------------------------------------------------- tracks */
.track {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
}
.track:last-child { border-bottom: none; }
.track-main { flex: 1; min-width: 0; }
.track-title { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track-sub { color: var(--text-dim); font-size: 12px; margin-top: 3px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.track-actions { display: flex; gap: 6px; align-items: center; }

.badge {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
  padding: 3px 9px; border-radius: 999px;
}
.badge.queued { background: rgba(154,161,173,.15); color: var(--text-dim); }
.badge.downloading, .badge.processing { background: rgba(108,140,255,.15); color: var(--accent-2); }
.badge.completed { background: rgba(62,207,142,.15); color: var(--ok); }
.badge.failed { background: rgba(255,93,93,.15); color: var(--err); }

.progress { height: 6px; background: var(--bg-elev2); border-radius: 999px; overflow: hidden; margin-top: 8px; }
.progress > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width .3s; }

.preview-box { background: var(--bg-elev2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; margin-top: 14px; display: flex; gap: 12px; align-items: center; }
.preview-box img { width: 104px; height: 58px; object-fit: cover; border-radius: 8px; }

/* detected songs rows */
.seg-row { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-top: 1px solid var(--border-soft); }
.seg-time { flex: 0 0 auto; font-variant-numeric: tabular-nums; color: var(--text-dim); font-size: 13px; }

audio { width: 100%; margin-top: 10px; height: 36px; }

.empty { text-align: center; color: var(--text-dim); padding: 48px 0; }
.empty-icon { font-size: 34px; display: block; margin-bottom: 10px; opacity: .7; }

.spinner {
  width: 15px; height: 15px; border: 2px solid rgba(255,255,255,.3);
  border-top-color: white; border-radius: 50%;
  animation: spin .7s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- modal */
.modal-wrap {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(6, 8, 12, .62); backdrop-filter: blur(3px);
  display: grid; place-items: center; padding: 24px;
}
.modal {
  width: 100%; max-width: 440px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.ok-msg { color: var(--ok); font-size: 14px; background: rgba(62,207,142,.1); border: 1px solid rgba(62,207,142,.3); border-radius: var(--radius-sm); padding: 12px 14px; }

/* --------------------------------------------------------------- responsive */
@media (max-width: 860px) {
  .mobilebar {
    display: flex; align-items: center; gap: 12px;
    position: sticky; top: 0; z-index: 40;
    padding: 12px 16px; background: var(--bg-side); border-bottom: 1px solid var(--border);
  }
  .app { flex-direction: column; }
  .sidebar {
    position: fixed; top: 0; left: 0; z-index: 45; height: 100vh;
    transform: translateX(-100%); transition: transform .22s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .backdrop { display: block; position: fixed; inset: 0; z-index: 44; background: rgba(0,0,0,.5); }
  .main { padding: 22px 18px 70px; max-width: none; }
}