*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d1a;
  --bg2: #14142a;
  --bg3: #1a1a2e;
  --bg4: #222242;
  --fg: #e0e0f0;
  --fg2: #a0a0c0;
  --accent: #00bcd4;
  --accent2: #26c6da;
  --warn: #ffc107;
  --danger: #ff5252;
  --success: #4caf50;
  --green: #66bb6a;
  --orange: #ffa726;
  --border: #2a2a4a;
  --font: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", monospace;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px;
}

.logo { color: var(--accent); font-weight: 700; }
.subtitle { color: var(--fg2); font-size: 11px; font-weight: 300; }
.tagline { color: var(--fg2); font-size: 9px; opacity: 0.5; }

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 10px;
}
.section-header h2 { margin: 0; }
.section-brand { text-align: right; line-height: 1.4; }

.loading-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(13,13,26,0.75);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 10;
  color: var(--fg2);
  font-size: 13px;
  gap: 10px;
}
.spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

#errorMsg {
  display: none;
  background: rgba(255,82,82,0.1);
  border: 1px solid var(--danger);
  border-radius: 8px;
  padding: 16px;
  color: var(--danger);
  text-align: center;
  margin-bottom: 24px;
}

#results { display: block; }

section {
  background: linear-gradient(180deg, #1c1c34 0%, #14142a 50%, #0e0e1e 100%);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
section h2 {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg2);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.info-item { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.info-item.fullwidth { grid-column: 1 / -1; }
.info-label { font-size: 10px; color: var(--fg2); text-transform: uppercase; letter-spacing: 0.8px; }
.info-value { font-size: 14px; color: var(--fg); font-weight: 500; word-break: break-all; overflow-wrap: break-word; }
.bpm-value { display: flex; align-items: center; gap: 6px; }
.bpm-buttons { display: flex; gap: 3px; }
.bpm-btn {
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg2);
  font-family: var(--font);
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  cursor: pointer;
  line-height: 1.4;
  transition: all 0.15s;
}
.bpm-btn:hover { background: var(--accent); border-color: var(--accent); color: #000; }

.metadata-grid {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 4px 16px;
  font-size: 12px;
}
.metadata-item {
  display: contents;
}
.metadata-item > span {
  padding: 4px 0;
  border-bottom: 1px solid rgba(42,42,74,0.3);
}
.metadata-source {
  color: var(--accent);
  font-weight: 500;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.metadata-key {
  color: var(--fg2);
}
.metadata-value {
  color: var(--fg);
  word-break: break-all;
}
.metadata-empty {
  display: none;
  color: var(--fg2);
  font-size: 12px;
  font-style: italic;
  text-align: center;
  padding: 12px;
}

.chart-container {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(13, 13, 26, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.chart-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}
.chart-container > canvas {
  position: relative;
  z-index: 0;
}
#spectrumChart, #waveformChart, #liveSpectrum {
  display: block;
  width: 100%;
}
#spectrumChart { height: 360px; }

.player-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
.player-btn {
  background: var(--bg4);
  border: none;
  border-radius: 6px;
  color: var(--fg);
  font-size: 15px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  line-height: 1;
}
.player-btn:hover { background: var(--accent); color: #000; }
.player-btn.active { background: var(--danger); color: #fff; }
.load-btn {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 12px;
  width: auto;
  padding: 0 14px;
  letter-spacing: 0.5px;
}
.load-btn:hover { background: var(--accent2); }
.info-value-tag {
  font-size: 9px;
  color: var(--accent);
  background: rgba(0,255,255,0.1);
  border: 1px solid rgba(0,255,255,0.2);
  border-radius: 3px;
  padding: 0 4px;
  font-family: var(--font);
  margin-left: 4px;
  vertical-align: middle;
}
.player-time { font-size: 12px; color: var(--fg2); font-family: var(--font); margin-left: 4px; }
.window-select {
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg);
  font-family: var(--font);
  font-size: 10px;
  padding: 2px 4px;
  cursor: pointer;
  margin-left: auto;
}
.window-select:hover { border-color: var(--accent); }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}
.metric-card {
  background: linear-gradient(180deg, #1c1c34 0%, #14142a 50%, #0e0e1e 100%);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}
.metric-label { font-size: 10px; color: var(--fg2); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 4px; }
.metric-value { font-size: 18px; font-weight: 600; color: var(--accent); }

.analysis-info {
  display: flex;
  gap: 24px;
  justify-content: center;
  font-size: 12px;
  color: var(--fg2);
}
.analysis-info strong { color: var(--fg); }

.decision-text { font-size: 20px; font-weight: 700; margin-bottom: 16px; }

.verdict { padding: 2px 10px; border-radius: 4px; font-size: 18px; }
.verdict.native, .verdict.genuine { color: var(--success); }
.verdict.transcode, .verdict.upscaled { color: var(--warn); }

.confidence-container {
  margin-top: 8px;
}
.confidence-label { font-size: 11px; color: var(--fg2); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 6px; }
.confidence-bar-bg {
  background: var(--bg4);
  border-radius: 10px;
  height: 22px;
  overflow: hidden;
  position: relative;
}
.confidence-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--danger), var(--warn), var(--success));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: #000;
  transition: width 0.6s ease;
  min-width: 0;
}
.confidence-label-small { font-size: 11px; color: var(--fg2); margin-top: 4px; font-style: italic; }

#factors h3 {
  font-size: 11px;
  font-weight: 600;
  color: var(--fg2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
#factors ul { list-style: none; }
#factors li {
  font-size: 12px;
  color: var(--fg);
  padding: 3px 0;
  font-family: var(--font);
}
#factors li.hint { color: var(--fg2); font-style: italic; padding-left: 16px; }
#factors .pass { color: var(--success); }
#factors .fail { color: var(--danger); }

.table-container { overflow-x: auto; }
#dataTable { width: 100%; border-collapse: collapse; font-size: 12px; }
#dataTable th {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--fg2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 10px;
}
#dataTable td {
  padding: 6px 12px;
  border-bottom: 1px solid rgba(42,42,74,0.4);
}
#dataTable td:first-child { color: var(--fg2); }
#dataTable td:last-child { color: var(--fg); font-weight: 500; font-family: var(--font); }
#dataTable tr:last-child td { border-bottom: none; }

footer {
  text-align: center;
  padding: 32px 0 16px;
  font-size: 11px;
  color: var(--fg2);
  opacity: 0.5;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .container { padding: 16px 12px; }
  .metrics-grid { grid-template-columns: repeat(3, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  header h1 { font-size: 22px; }
}