/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white:   #ffffff;
  --offwhite:#e8e4dc;
  --dim:     rgba(255,255,255,0.35);
  --dimmer:  rgba(255,255,255,0.12);
  --panel-bg:rgba(6,6,8,0.82);
  --border:  rgba(255,255,255,0.07);
  --accent:  #c8f0ff;
  --radius:  10px;
  --font-ui: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

html, body {
  width: 100%; height: 100%;
  background: #000;
  color: var(--white);
  font-family: var(--font-ui);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Canvas ─────────────────────────────────────────────────── */
#visualizer-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* ── Upload Overlay ─────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  background: #000;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.overlay.hidden  { opacity: 0; visibility: hidden; pointer-events: none; }
.overlay.active  { opacity: 1; visibility: visible; }

.upload-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  user-select: none;
}

/* Animated preview orb */
.orb-preview {
  width: 90px; height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 36%, rgba(255,255,255,0.18) 0%, transparent 70%);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow:
    0 0 40px rgba(255,255,255,0.04),
    inset 0 0 30px rgba(255,255,255,0.03);
  animation: orb-pulse 3.2s ease-in-out infinite;
  margin-bottom: 8px;
}
@keyframes orb-pulse {
  0%,100% { transform: scale(1);   box-shadow: 0 0 40px rgba(255,255,255,0.04); }
  50%      { transform: scale(1.07); box-shadow: 0 0 70px rgba(255,255,255,0.09); }
}

.app-title {
  font-size: 2.6rem;
  font-weight: 300;
  letter-spacing: 0.45em;
  color: var(--white);
}

.app-sub {
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--dim);
  text-transform: uppercase;
  margin-top: -6px;
}

.upload-btn {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 32px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 40px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  background: rgba(255,255,255,0.04);
}
.upload-btn:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.4);
  box-shadow: 0 0 24px rgba(200,240,255,0.08);
}
.upload-icon { font-size: 0.8rem; }

.upload-hint {
  font-size: 0.58rem;
  letter-spacing: 0.25em;
  color: var(--dimmer);
  text-transform: uppercase;
  margin-top: 4px;
}

/* ── Controls Panel ─────────────────────────────────────────── */
.controls {
  position: fixed;
  top: 50%;
  right: 24px;
  transform: translateY(-50%);
  width: 220px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.controls.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(20px);
}

.controls-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.controls-title {
  font-size: 0.7rem;
  letter-spacing: 0.38em;
  color: var(--dim);
  text-transform: uppercase;
}
.icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--dim);
  cursor: pointer;
  font-size: 0.85rem;
  width: 26px; height: 26px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: color 0.2s, border-color 0.2s;
}
.icon-btn:hover { color: var(--white); border-color: rgba(255,255,255,0.25); }

.track-name {
  font-size: 0.65rem;
  color: var(--offwhite);
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  max-width: 100%;
}

/* Transport */
.transport {
  display: flex;
  align-items: center;
  gap: 10px;
}
.play-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--white);
  width: 34px; height: 34px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s;
}
.play-btn:hover { background: rgba(255,255,255,0.16); }

.time-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 1;
  font-size: 0.58rem;
  color: var(--dim);
}
.time-bar input[type=range] { flex: 1; }

/* Divider */
.divider {
  height: 1px;
  background: var(--border);
  width: 100%;
}

/* Control groups */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.control-group label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  display: flex;
  justify-content: space-between;
}
.val { color: var(--accent); font-weight: 400; }

/* Range inputs */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: rgba(255,255,255,0.12);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--white);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(200,240,255,0.5);
  transition: transform 0.15s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.3); }
input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--white);
  border: none;
  cursor: pointer;
}

.bottom-hint {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  color: var(--dimmer);
  text-align: center;
  text-transform: uppercase;
}

/* ── Color picker ───────────────────────────────────────────── */
.color-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.color-swatch {
  width: 28px; height: 28px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.18);
  cursor: pointer;
  padding: 0;
  background: #fff;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}
/* Hide the ugly default input, show only the swatch */
.color-swatch input[type="color"] {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  opacity: 0;
  cursor: pointer;
  border: none;
  padding: 0;
}
.color-hex {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--offwhite);
  font-family: var(--font-ui);
}

/* ── Shape selector ─────────────────────────────────────────── */
.shape-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px;
}
.shape-btn {
  aspect-ratio: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
  padding: 0;
}
.shape-btn:hover  { background: rgba(255,255,255,0.1); }
.shape-btn.active {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.4);
}
.shape-btn svg {
  width: 14px; height: 14px;
  fill: var(--white);
  opacity: 0.75;
}

/* ── Buy Me a Coffee ────────────────────────────────────────── */
/* Subtle link on the upload screen */
.bmc-link {
  margin-top: 10px;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--dimmer);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}
.bmc-link:hover { color: #FFDD00; }

/* Button at the bottom of the controls panel */
.bmc-btn {
  display: block;
  text-align: center;
  padding: 8px 0;
  border: 1px solid rgba(255,221,0,0.15);
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(255,221,0,0.5);
  background: rgba(255,221,0,0.03);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.bmc-btn:hover {
  color: #FFDD00;
  border-color: rgba(255,221,0,0.4);
  background: rgba(255,221,0,0.07);
}
body.drag-over #upload-overlay { background: rgba(0,0,0,0.92); }
body.drag-over .upload-btn { border-color: rgba(200,240,255,0.6); background: rgba(200,240,255,0.06); }