:root {
  --bg: #0b1020;
  --card: rgba(17, 23, 43, 0.72);
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #eef2ff;
  --muted: #a8b3cf;
  --accent: #7c5cff;
  --accent-2: #25d0ab;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 24px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 92, 255, 0.25), transparent 30%),
    radial-gradient(circle at top right, rgba(37, 208, 171, 0.18), transparent 26%),
    linear-gradient(180deg, #090d18 0%, var(--bg) 42%, #070b14 100%);
}

body { padding: 32px 20px 48px; }

.page { width: min(1120px, 100%); margin: 0 auto; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
  padding: 16px 18px;
  border-radius: 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

    .brand {
      display: flex;
      align-items: center;
      gap: 14px;
      min-width: 0;
    }

    .brand-mark {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      font-size: 22px;
      box-shadow: 0 10px 24px rgba(124,92,255,0.25);
      flex: 0 0 auto;
    }

    .brand-title {
      font-size: 18px;
      font-weight: 800;
      letter-spacing: -0.03em;
      line-height: 1.1;
    }

    .brand-subtitle {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.4;
      margin-top: 2px;
    }

    .lang-btn {
      border: 1px solid rgba(255,255,255,0.1);
      background: rgba(255,255,255,0.06);
      color: var(--text);
      border-radius: 999px;
      padding: 11px 14px;
      font: inherit;
      font-weight: 600;
      cursor: pointer;
      transition: 0.2s ease;
      flex: 0 0 auto;
    }

    .lang-btn:hover { transform: translateY(-1px); }

    .hero {
      display: grid;
      gap: 14px;
      padding-top: 72px;
      margin: 6 0 26px;
      justify-items: center;
      text-align: center;
    }

    h1 {
      margin: 0 auto;
      font-size: clamp(32px, 6vw, 58px);
      line-height: 0.98;
      letter-spacing: -0.05em;
      max-width: 20ch;
      text-align: center;
    }

    .subtitle {
      margin: 16 auto;
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.7;
      text-align: center;
    }

    .grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 22px;
      align-items: start;
    }

    .card {
      position: relative;
      overflow: hidden;
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
    }

    .card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(124,92,255,0.12), transparent 28%, rgba(37,208,171,0.07));
      pointer-events: none;
    }

    .card-inner {
      position: relative;
      padding: 24px;
    }

    .uploader {
      display: grid;
      gap: 18px;
    }

    .dropzone {
      position: relative;
      display: grid;
      place-items: center;
      min-height: 280px;
      border-radius: 22px;
      border: 1.5px dashed rgba(255,255,255,0.17);
      background:
        radial-gradient(circle at top, rgba(124,92,255,0.16), transparent 40%),
        rgba(255,255,255,0.03);
      transition: 0.2s ease;
      cursor: pointer;
      padding: 26px;
      text-align: center;
    }

    .dropzone:hover,
    .dropzone.dragover {
      transform: translateY(-2px);
      border-color: rgba(124,92,255,0.7);
      background:
        radial-gradient(circle at top, rgba(124,92,255,0.25), transparent 40%),
        rgba(255,255,255,0.045);
    }

    .dropzone.disabled {
      opacity: 0.7;
      cursor: wait;
      pointer-events: none;
    }

    .drop-icon {
      width: 74px;
      height: 74px;
      border-radius: 22px;
      display: grid;
      place-items: center;
      background: linear-gradient(145deg, rgba(124,92,255,0.28), rgba(37,208,171,0.2));
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
      font-size: 34px;
      margin: 0 auto 16px;
    }

    .drop-title {
      font-size: 22px;
      font-weight: 700;
      margin: 0 0 8px;
    }

    .drop-text {
      margin: 0;
      color: var(--muted);
      line-height: 1.7;
    }

    .actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      justify-content: center;
      margin-top: 18px;
    }

    .btn {
      appearance: none;
      border: 0;
      border-radius: 14px;
      padding: 14px 18px;
      font: inherit;
      font-weight: 600;
      cursor: pointer;
      transition: 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--text);
    }

    .btn:hover { transform: translateY(-1px); }
    .btn:disabled { opacity: 0.56; cursor: not-allowed; transform: none; }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent), #5dd6ff);
      box-shadow: 0 14px 26px rgba(124,92,255,0.3);
    }

    .btn-secondary {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .file-meta {
      display: none;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      justify-content: space-between;
      padding: 16px 18px;
      border-radius: 16px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .file-meta.show { display: flex; }

    .file-name {
      font-weight: 600;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      max-width: 100%;
    }

    .file-hint {
      color: var(--muted);
      font-size: 13px;
    }

    .sidebar {
      display: grid;
      gap: 18px;
    }

    .stat-grid {
      display: grid;
      gap: 14px;
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mini {
      padding: 18px;
      border-radius: 18px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .mini .label {
      color: var(--muted);
      font-size: 13px;
      margin-bottom: 8px;
    }

    .mini .value {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: -0.04em;
    }

    .panel-title {
      margin: 0 0 12px;
      font-size: 18px;
    }

    .processing {
      display: none;
      gap: 16px;
      align-items: center;
      padding: 18px;
      border-radius: 18px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .processing.show,
    .result.show,
    .error.show {
      display: flex;
    }

    .spinner {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      border: 3px solid rgba(255,255,255,0.16);
      border-top-color: var(--accent-2);
      animation: spin 0.9s linear infinite;
      flex: 0 0 auto;
    }

    @keyframes spin { to { transform: rotate(360deg); } }

    .status-text {
      display: grid;
      gap: 4px;
    }

    .status-text strong {
      font-size: 15px;
    }

    .status-text span {
      color: var(--muted);
      font-size: 13px;
    }

    .result,
    .error {
      display: none;
      flex-direction: column;
      gap: 14px;
    }

    .track-list {
      display: grid;
      gap: 14px;
    }

    .track {
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      display: grid;
      gap: 10px;
    }

    .track-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
    }

    .track-name {
      font-weight: 600;
    }

    .track-time {
      color: var(--muted);
      font-size: 12px;
      white-space: nowrap;
    }

    audio {
      width: 100%;
      height: 36px;
    }

    .download-box {
      padding: 18px;
      border-radius: 18px;
      background: linear-gradient(135deg, rgba(124,92,255,0.18), rgba(37,208,171,0.08));
      border: 1px solid rgba(255,255,255,0.08);
      display: grid;
      gap: 14px;
    }

    .error {
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,107,107,0.08);
      border: 1px solid rgba(255,107,107,0.24);
      color: #ffd9d9;
    }

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

    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0,0,0,0);
      border: 0;
    }

    @media (max-width: 960px) {
      .grid { grid-template-columns: 1fr; }
      .stat-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 640px) {
      body { padding: 18px 14px 34px; }
      .card-inner { padding: 18px; }
      .dropzone { min-height: 240px; }
      .stat-grid { grid-template-columns: 1fr; }
      .track-head { flex-direction: column; align-items: flex-start; }
      .topbar { flex-direction: column; align-items: flex-start; }
    }