/* ============================================
   BEATFORGE v3 — Holographic Arcade Aesthetic
   Chrome gradients / Scanline overlays / CRT grain
   Animated grid BG / Glassmorphism / Beat-reactive
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@300;400;500;600;700&family=Orbitron:wght@400;700;900&display=swap');

:root {
  --red: #ff1744;
  --blue: #2979ff;
  --red-glow: #ff174466;
  --blue-glow: #2979ff66;
  --neon-pink: #f50057;
  --neon-cyan: #00e5ff;
  --neon-lime: #76ff03;
  --chrome-1: #e0e8ff;
  --chrome-2: #8090c0;
  --bg-void: #020408;
  --bg-deep: #060a12;
  --bg-panel: rgba(8, 14, 28, 0.85);
  --bg-panel-solid: #080e1c;
  --bg-panel-border: rgba(32, 50, 90, 0.6);
  --bg-input: rgba(10, 18, 32, 0.9);
  --glass-blur: 16px;
  --text-primary: #d0d8e8;
  --text-bright: #eef0f8;
  --text-secondary: #5a6a90;
  --text-dim: #2a3858;
  --accent-gradient: linear-gradient(135deg, var(--red) 0%, var(--neon-pink) 40%, var(--blue) 100%);
  --chrome-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
  --holo-gradient: linear-gradient(90deg, var(--red), var(--neon-pink), #a855f7, var(--blue), var(--neon-cyan), var(--neon-lime), var(--red));
  --panel-radius: 16px;
  --transition-smooth: 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* ---- CUSTOM SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--red), var(--blue)); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon-cyan); }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: 'Chakra Petch', sans-serif;
  background: var(--bg-void);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.55;
}

/* ---- SCANLINE + GRAIN OVERLAY ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
  mix-blend-mode: multiply;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.3;
}

/* ---- LAYOUT ---- */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 24px 48px;
}

/* ---- HEADER ---- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
}

.app-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--holo-gradient);
  background-size: 300% 100%;
  animation: holo-shift 6s linear infinite;
}

@keyframes holo-shift {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.logo-group { display: flex; align-items: center; gap: 14px; }

.logo-icon {
  width: 50px;
  height: 50px;
  color: var(--neon-cyan);
  filter: drop-shadow(0 0 10px var(--neon-cyan)) drop-shadow(0 0 30px rgba(0,229,255,0.2));
  animation: logo-breathe 4s ease-in-out infinite;
}

@keyframes logo-breathe {
  0%, 100% { filter: drop-shadow(0 0 10px var(--neon-cyan)) drop-shadow(0 0 30px rgba(0,229,255,0.15)); transform: scale(1); }
  50% { filter: drop-shadow(0 0 18px var(--neon-cyan)) drop-shadow(0 0 45px rgba(0,229,255,0.3)); transform: scale(1.03); }
}

.logo-text {
  font-family: 'Orbitron', monospace;
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 5px;
  background: var(--chrome-gradient);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: chrome-shimmer 4s ease-in-out infinite;
}

@keyframes chrome-shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 200% 50%; }
}

.logo-sub {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  color: var(--text-secondary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 3px;
}

.header-badges { display: flex; gap: 8px; }

.badge {
  font-family: 'Orbitron', monospace;
  font-size: 0.55rem;
  letter-spacing: 1.5px;
  padding: 5px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

.badge-version { border: 1px solid var(--blue); color: var(--blue); background: rgba(41,121,255,0.08); }
.badge-ranked { border: 1px solid var(--red); color: var(--red); background: rgba(255,23,68,0.08); }

/* ---- PANELS — GLASSMORPHISM ---- */
.panel {
  background: var(--bg-panel);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--bg-panel-border);
  border-radius: var(--panel-radius);
  padding: 24px 28px;
  margin-bottom: 20px;
  transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--holo-gradient);
  background-size: 400% 100%;
  animation: holo-shift 8s linear infinite;
  opacity: 0.6;
}

.panel::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.012) 0%, transparent 50%, rgba(255,255,255,0.006) 100%);
  pointer-events: none;
}

.panel:hover {
  border-color: rgba(50, 70, 120, 0.7);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3), inset 0 0 60px rgba(0, 229, 255, 0.012);
}

.panel-header { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }

.step-num {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 229, 255, 0.4);
  border-radius: 8px;
  padding: 4px 10px;
  letter-spacing: 1px;
  min-width: 34px;
  text-align: center;
  background: rgba(0, 229, 255, 0.05);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

.panel-header h2 {
  font-family: 'Orbitron', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3.5px;
  color: var(--text-bright);
}

/* ---- UPLOAD ---- */
.upload-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.upload-zone {
  border: 1.5px dashed rgba(32, 50, 90, 0.7);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  background: rgba(0, 0, 0, 0.15);
}

.upload-zone:hover {
  border-color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.04);
  box-shadow: inset 0 0 40px rgba(0, 229, 255, 0.03);
}

.upload-zone.has-file {
  border-color: var(--neon-cyan);
  border-style: solid;
  background: rgba(0, 229, 255, 0.06);
}

.upload-icon { width: 38px; height: 38px; margin: 0 auto 10px; color: var(--text-secondary); transition: all var(--transition-smooth); }
.upload-zone:hover .upload-icon { color: var(--neon-cyan); filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.4)); }
.upload-label { font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; color: var(--text-bright); }
.upload-hint { font-size: 0.7rem; color: var(--text-dim); letter-spacing: 0.5px; }

.file-status { margin-top: 14px; font-size: 0.78rem; color: var(--neon-cyan); min-height: 20px; font-weight: 500; }

/* ---- CONFIG ---- */
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.config-field label {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.config-field input,
.config-field select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid rgba(32, 50, 90, 0.5);
  border-radius: 10px;
  color: var(--text-bright);
  font-family: 'Chakra Petch', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-smooth);
  outline: none;
}

.config-field input:focus,
.config-field select:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1), 0 0 15px rgba(0, 229, 255, 0.05);
}

.config-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6a90' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.config-field select option { background: var(--bg-panel-solid); color: var(--text-primary); }
.config-field select optgroup { background: var(--bg-void); color: var(--text-secondary); font-weight: 600; font-size: 0.75rem; }

/* ---- SLIDERS ---- */
.config-sliders {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(32, 50, 90, 0.4);
}

.slider-field label {
  display: flex;
  justify-content: space-between;
  font-family: 'Orbitron', monospace;
  font-size: 0.52rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.slider-val { color: var(--neon-cyan); text-shadow: 0 0 6px rgba(0, 229, 255, 0.3); }

.slider-field input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(32, 50, 90, 0.5);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.slider-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.5), 0 0 20px rgba(0, 229, 255, 0.2);
  cursor: pointer;
  transition: box-shadow 0.2s;
}

.slider-field input[type="range"]::-webkit-slider-thumb:hover {
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.7), 0 0 30px rgba(0, 229, 255, 0.3);
}

.slider-field input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
  border: none;
  cursor: pointer;
}

/* ---- DIFF CHIPS & TOGGLE ---- */
.diff-select { margin-top: 20px; }

.diff-select > label {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.diff-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.element-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid rgba(32, 50, 90, 0.5);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-smooth);
  user-select: none;
  background: rgba(0, 0, 0, 0.2);
}

.chip:has(input:checked) {
  border-color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.1);
  color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
}

.chip input { display: none; }

.ranked-toggle { margin-top: 18px; }

.toggle-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
}

.toggle-label input { display: none; }

.toggle-track {
  width: 44px; height: 24px;
  background: rgba(32, 50, 90, 0.5);
  border-radius: 12px;
  position: relative;
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.toggle-label input:checked + .toggle-track {
  background: var(--red);
  box-shadow: 0 0 16px var(--red-glow);
}

.toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-smooth);
}

.toggle-label input:checked + .toggle-track .toggle-thumb { transform: translateX(20px); }

/* ---- GENERATE BUTTON ---- */
.btn-sm {
  padding: 6px 12px; font-size: 0.7rem; font-weight: 700; border: 1px solid var(--neon-cyan);
  border-radius: 6px; background: rgba(0,229,255,0.1); color: var(--neon-cyan);
  cursor: pointer; font-family: 'Orbitron', monospace; transition: all 0.2s;
  white-space: nowrap;
}
.btn-sm:hover { background: rgba(0,229,255,0.25); }
.btn-sm:active { background: rgba(0,229,255,0.4); transform: scale(0.95); }

.btn-generate {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 18px;
  font-family: 'Orbitron', monospace;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 5px;
  color: white;
  background: var(--accent-gradient);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.btn-generate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn-generate:not(:disabled):hover::before { transform: translateX(100%); }

.btn-generate:disabled { opacity: 0.3; cursor: not-allowed; filter: grayscale(0.5) brightness(0.7); }

.btn-generate:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px rgba(255, 23, 68, 0.3), 0 8px 35px rgba(41, 121, 255, 0.3);
}

.btn-icon { font-size: 1.2rem; }

/* ---- PROGRESS ---- */
.progress-area { margin-top: 18px; }

.progress-bar-track {
  width: 100%;
  height: 5px;
  background: rgba(32, 50, 90, 0.4);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent-gradient);
  background-size: 200% 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
  animation: progress-glow 2s linear infinite;
}

@keyframes progress-glow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.progress-text {
  margin-top: 10px;
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
}

/* ---- RESULTS ---- */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.result-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(32, 50, 90, 0.4);
  border-radius: 12px;
  padding: 14px 12px;
  text-align: center;
  transition: all var(--transition-smooth);
}

.result-card:hover {
  border-color: rgba(0, 229, 255, 0.3);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.05);
}

.result-card .rc-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.result-card .rc-value {
  font-family: 'Orbitron', monospace;
  font-size: 1.2rem;
  font-weight: 700;
}

.rc-value.val-good { color: var(--neon-cyan); text-shadow: 0 0 10px rgba(0, 229, 255, 0.3); }
.rc-value.val-warn { color: #ffa726; }
.rc-value.val-bad { color: var(--red); text-shadow: 0 0 10px var(--red-glow); }

.rank-display {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(32, 50, 90, 0.4);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 18px;
}

.rank-display h3 {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  letter-spacing: 2.5px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.rank-bars { display: flex; flex-direction: column; gap: 8px; }

.rank-bar-row { display: flex; align-items: center; gap: 10px; }

.rank-bar-label {
  width: 90px;
  font-family: 'Orbitron', monospace;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: right;
  flex-shrink: 0;
}

.rank-bar-track {
  flex: 1;
  height: 6px;
  background: rgba(32, 50, 90, 0.3);
  border-radius: 3px;
  overflow: hidden;
}

.rank-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
  box-shadow: 0 0 8px currentColor;
}

.rank-bar-score {
  width: 36px;
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  font-weight: 700;
  text-align: left;
  flex-shrink: 0;
}

/* ---- EXPORT BUTTON ---- */
.export-actions { text-align: center; }

.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 36px;
  font-family: 'Orbitron', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--neon-cyan);
  background: transparent;
  border: 1.5px solid var(--neon-cyan);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-export::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 229, 255, 0.08);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.btn-export:hover::before { transform: scaleX(1); }

.btn-export:hover {
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.2), inset 0 0 25px rgba(0, 229, 255, 0.05);
  transform: translateY(-1px);
}

/* ---- NOTE GRID PREVIEW ---- */
.grid-preview-container {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

#grid-canvas {
  width: 200px;
  height: 160px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(32, 50, 90, 0.4);
  flex-shrink: 0;
}

.grid-stats {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.grid-stat-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.grid-stat-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.grid-stat-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  flex: 1;
}

.grid-stat-val {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-bright);
}

/* ---- GENERATION LOG ---- */
.gen-log {
  max-height: 200px;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(32, 50, 90, 0.3);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: 'Chakra Petch', monospace;
  font-size: 0.72rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.gen-log .log-time { color: var(--text-dim); margin-right: 6px; }
.gen-log .log-pattern { color: var(--neon-cyan); font-weight: 600; }
.gen-log .log-section { color: var(--neon-pink); font-weight: 600; }
.gen-log .log-warn { color: #ffa726; }

/* ---- VISUALIZATION ---- */
#waveform-canvas {
  width: 100%;
  height: 160px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.25);
  cursor: pointer;
  border: 1px solid rgba(32, 50, 90, 0.3);
}

.audio-player-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }

.btn-play {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(32, 50, 90, 0.5);
  border-radius: 50%;
  color: var(--neon-cyan);
  cursor: pointer;
  transition: all var(--transition-smooth);
  flex-shrink: 0;
}

.btn-play:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
}

.audio-time {
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
}

.spectral-bands { display: flex; gap: 16px; margin-top: 14px; }

.band-meter { flex: 1; display: flex; align-items: center; gap: 8px; }

.band-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  width: 36px;
  flex-shrink: 0;
}

.band-bar-track {
  flex: 1;
  height: 6px;
  background: rgba(32, 50, 90, 0.3);
  border-radius: 3px;
  overflow: hidden;
}

.band-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.15s ease;
  width: 0%;
}

.band-bass { background: var(--red); box-shadow: 0 0 8px var(--red-glow); }
.band-mid { background: var(--neon-pink); box-shadow: 0 0 8px rgba(245, 0, 87, 0.3); }
.band-high { background: var(--neon-cyan); box-shadow: 0 0 8px rgba(0, 229, 255, 0.3); }

.section-timeline {
  display: flex;
  gap: 2px;
  margin-top: 14px;
  height: 24px;
  border-radius: 6px;
  overflow: hidden;
}

.section-block {
  height: 100%;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Orbitron', monospace;
  font-size: 0.42rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.75);
  text-transform: uppercase;
  min-width: 18px;
  overflow: hidden;
  white-space: nowrap;
  padding: 0 6px;
  transition: all 0.2s;
}

.section-block:hover { filter: brightness(1.3); transform: scaleY(1.15); }

.section-block.sec-intro   { background: linear-gradient(135deg, #1a237e, #283593); }
.section-block.sec-verse   { background: linear-gradient(135deg, #0d47a1, #1565c0); }
.section-block.sec-buildup { background: linear-gradient(135deg, #e65100, #f57c00); }
.section-block.sec-chorus  { background: linear-gradient(135deg, #880e4f, #ad1457); }
.section-block.sec-drop    { background: linear-gradient(135deg, #b71c1c, #d32f2f); }
.section-block.sec-break   { background: linear-gradient(135deg, #1b5e20, #2e7d32); }
.section-block.sec-outro   { background: linear-gradient(135deg, #212121, #424242); }

.viz-stats {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.viz-stats span { font-weight: 500; }
.viz-stats .vs-val { color: var(--neon-cyan); font-family: 'Orbitron', monospace; font-weight: 700; font-size: 0.7rem; }
.viz-stats .vs-good { color: #4cff88; font-family: 'Orbitron', monospace; font-weight: 700; font-size: 0.7rem; }
.viz-stats .vs-warn { color: #ffaa33; font-family: 'Orbitron', monospace; font-weight: 700; font-size: 0.7rem; }

/* ---- PER-DIFFICULTY STATS ---- */
.diff-stats-table { overflow-x: auto; }

.diff-stats-table table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }

.diff-stats-table th {
  font-family: 'Orbitron', monospace;
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid rgba(32, 50, 90, 0.4);
  text-transform: uppercase;
  white-space: nowrap;
}

.diff-stats-table td {
  padding: 10px 8px;
  border-bottom: 1px solid rgba(10, 18, 32, 0.5);
  font-weight: 500;
  white-space: nowrap;
}

.diff-stats-table tr:hover td { background: rgba(0, 229, 255, 0.02); }

.diff-stats-table .td-diff { font-family: 'Orbitron', monospace; font-weight: 700; font-size: 0.6rem; letter-spacing: 1px; }
.diff-stats-table .td-pass { color: var(--neon-cyan); text-shadow: 0 0 6px rgba(0, 229, 255, 0.3); }
.diff-stats-table .td-fail { color: var(--red); text-shadow: 0 0 6px var(--red-glow); }

/* ---- FOOTER ---- */
.app-footer {
  text-align: center;
  padding: 24px 0 0;
  margin-top: 24px;
  position: relative;
}

.app-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--holo-gradient);
  background-size: 300% 100%;
  animation: holo-shift 6s linear infinite;
  opacity: 0.5;
}

.app-footer p { font-size: 0.65rem; color: var(--text-dim); letter-spacing: 2px; font-family: 'Orbitron', monospace; }

/* ---- RESPONSIVE ---- */
@media (max-width: 700px) {
  .upload-grid { grid-template-columns: 1fr; }
  .config-grid { grid-template-columns: 1fr; }
  .config-sliders { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; align-items: flex-start; }
  .logo-text { font-size: 1.5rem; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .grid-preview-container { flex-direction: column; }
  #grid-canvas { width: 100%; }
}

/* ---- ANIMATIONS ---- */
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel { animation: fadeSlideIn 0.5s ease forwards; }
.panel:nth-child(2) { animation-delay: 0.06s; }
.panel:nth-child(3) { animation-delay: 0.12s; }
.panel:nth-child(4) { animation-delay: 0.18s; }
.panel:nth-child(5) { animation-delay: 0.24s; }