/* Web Audio Tools - Shared Theme */

:root {
  /* Purple primary restored */
  --primary: #6c5ce7;
  --danger: #dc3545;
  --bg: #f4f7f6;
  --card: #ffffff;
  --text: #333;
  --border: #dcdde1;
  --highlight: #fab1a0;
  --playing: #55efc4;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.container, .card {
  background: var(--card);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  width: 100%;
  max-width: 450px;
}

h1 {
  margin-top: 0;
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

/* Back-to-home navigation link (top of each tool page) */
.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: #888;
  text-decoration: none;
  margin-bottom: 0.75rem;
}

.back-link:hover {
  color: var(--primary);
}

/* Preset button rows (generator + sequencer) */
.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-btn {
  flex: 1;
  min-width: 70px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 6px;
  font-size: 0.8rem;
}

.preset-btn:hover {
  background: var(--primary);
  color: #fff;
}

button {
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s, box-shadow 0.2s;
}

button:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 6px rgba(108, 92, 231, 0.2);
}

.btn-primary:hover {
  opacity: 0.95;
  box-shadow: 0 6px 10px rgba(108, 92, 231, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #2d3436;
  color: #fff;
}

/* Apply hover lift to all buttons for consistency */
button:hover {
  transform: translateY(-1px);
}

/* Give secondary buttons a subtle hover effect too */
.btn-secondary:hover {
  opacity: 0.95;
  box-shadow: 0 6px 10px rgba(0, 0, 0, 0.2);
}

input[type=range] {
  width: 100%;
  cursor: pointer;
}

.value-display, .val-display {
  color: var(--primary);
  font-family: monospace;
  font-size: 0.9rem;
}

/* Shared button row layout for pages */
.btn-row, .main-btns {
  display: flex;
  gap: 10px;
  margin-top: 1.5rem;
}

.btn-row > button, .main-btns > button {
  flex: 1;
}

/* Shared visualizer canvas (opt-in via class) */
.viz-canvas {
  width: 100%;
  height: 80px;
  background: #2d3436;
  border-radius: 6px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

/* Controls panel */
.global-controls {
  background: #f1f2f6;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.control-row label {
  font-size: 0.8rem;
  font-weight: 700;
  width: 70px;
}

.control-row input[type=range] {
  flex: 1;
  margin: 0 10px;
  cursor: pointer;
}

/* Numeric inputs shared */
.num-input {
  width: 60px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: right;
  font-family: monospace;
}

select.num-input {
  width: 80px;
}

/* Sequencer list styles (also suitable for other lists) */
.sequence-list {
  margin-bottom: 20px;
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid #eee;
  border-radius: 6px;
  padding: 5px;
}

.tone-row {
  display: flex;
  align-items: center;
  padding: 8px;
  border-bottom: 1px solid #f1f2f6;
  transition: background 0.1s;
  border-radius: 4px;
}

/* The Timeline Highlight Class */
.tone-row.is-playing {
  background-color: var(--playing);
  border-left: 4px solid #00b894;
  font-weight: bold;
}

.tone-row span {
  font-size: 0.8rem;
  width: 30px;
  color: #b2bec3;
  font-weight: bold;
}

.tone-row input {
  flex: 1;
  padding: 8px;
  border: 1px solid #dfe6e9;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-right: 10px;
}

.tone-row button {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
}

.tone-row button:hover {
  background: var(--danger);
  color: white;
}

/* Action area and add button */
.action-area {
  display: grid;
  gap: 10px;
}

.add-btn {
  width: 100%;
  padding: 10px;
  background: #fff;
  border: 2px dashed #b2bec3;
  color: #636e72;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

.add-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #f8f9fa;
}