@import url('/assets/css/utils.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary-glow: rgba(37, 99, 235, 0.3);
  --active-color: #2563eb;
  --bg-card: #f8fafc;
  --border-glass: #e2e8f0;
  --text-primary: #000000;
  --text-secondary: #475569;
  --font-family: 'Inter', -apple-system, sans-serif;
  --panel-radius: 10px;
  --teal: #2563eb;
  --teal-dim: #1d4ed8;
  --panel: #f8fafc;
  --panel-edge: #e2e8f0;
  --text: #000000;
  --text-dim: #475569;
}

/* Enforce box-sizing across the tone generator module to prevent container overflow */
.tone-gen-layout,
.tone-gen-layout *,
.tone-gen-layout *::before,
.tone-gen-layout *::after {
  box-sizing: border-box;
}


.tone-gen-layout {
  font-family: var(--font-family);
  background: #ffffff;
  color: var(--text-primary);
  width: 100%;
  max-width: 1200px;
  margin: 15px auto;
  padding: 18px;
  border-radius: var(--panel-radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-glass);
  overflow: hidden;
}

.tone-gen-layout .brand { display: flex; align-items: baseline; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.tone-gen-layout .brand h1 { font-family: 'Inter', sans-serif; font-size: 20px; font-weight: 700; color: #000000; margin: 0; display: inline; }
.tone-gen-layout .brand h2 { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 500; color: #475569; margin: 0; display: inline; }
.tone-gen-layout .brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--active-color); box-shadow: 0 0 6px var(--active-color); flex-shrink: 0; }

/* Dashboard Grid Layout - Compact & Efficient */
.tone-gen-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 18px;
  margin-bottom: 20px;
  width: 100%;
  align-items: stretch;
}

.tone-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--panel-radius);
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

.tone-card .card-header {
  margin-bottom: 12px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.tone-card .card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: #000000;
  letter-spacing: 0.5px;
}

/* Waveform Select Tabs */
.waveform-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  max-width: 100%;
}

.wave-tab {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s ease;
  flex: 1 1 auto;
  min-width: 65px;
  white-space: nowrap;
}

.wave-tab svg {
  fill: currentColor;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.wave-tab:hover {
  background: #eff6ff;
  border-color: var(--active-color);
  color: var(--active-color);
}

.wave-tab.active {
  background: var(--active-color);
  border-color: #1d4ed8;
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.wave-tab.active svg {
  transform: scale(1.1);
  fill: #ffffff;
}

/* Hero Integrated Readout & Instant Play Deck */
.hero-play-deck {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 14px;
  gap: 16px;
  width: 100%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.frequency-input-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
  min-width: 0;
}

.frequency-input-wrapper {
  display: inline-flex;
  align-items: baseline;
  position: relative;
  max-width: 100%;
}

.freq-digital-display {
  background: transparent;
  border: none;
  color: #000000;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  text-align: left;
  width: 100%;
  max-width: 210px;
  min-width: 80px;
  outline: none;
  font-feature-settings: "tnum";
  line-height: 1;
}

.freq-digital-display::-webkit-inner-spin-button, 
.freq-digital-display::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
  margin: 0; 
}

.hz-label {
  font-size: 1.25rem;
  color: var(--active-color);
  font-weight: 700;
  margin-left: 4px;
  flex-shrink: 0;
}

.note-detector-wrapper {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.note-name {
  color: var(--active-color);
  font-weight: 700;
}

.note-cents {
  font-size: 0.8rem;
}

/* Play Button - Prominent & Zero Scroll */
.action-block {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0;
  flex-shrink: 0;
}

.play-pulse-btn {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--active-color);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  outline: none;
  flex-shrink: 0;
}

.play-pulse-btn:hover {
  transform: scale(1.06);
  background: #1d4ed8;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
}

.play-pulse-btn:active {
  transform: scale(0.95);
}

.play-pulse-btn.playing {
  background: #dc2626;
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.play-pulse-btn.playing:hover {
  box-shadow: 0 8px 25px rgba(220, 38, 38, 0.6);
}

.play-icon-container svg {
  transition: transform 0.2s ease, opacity 0.2s;
  fill: #ffffff;
}

.hidden {
  display: none !important;
}

/* Pulsing effect in action */
.play-pulse-btn.playing::after {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border-radius: 50%;
  border: 2px solid #dc2626;
  opacity: 0;
  animation: pulse-ring 1.8s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.95);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.3);
    opacity: 0;
  }
}

/* Integrated Volume Controller */
.volume-container {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  padding: 5px 10px;
  border-radius: 8px;
  max-width: 180px;
}

.btn-mute {
  background: transparent;
  border: none;
  color: var(--active-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: color 0.2s;
  flex-shrink: 0;
  padding: 0;
}

.btn-mute:hover {
  color: #1d4ed8;
}

.slider-volume {
  flex: 1;
  min-width: 40px;
}

.volume-value {
  font-size: 0.8rem;
  font-weight: 600;
  width: 35px;
  text-align: right;
  color: var(--active-color);
  flex-shrink: 0;
}

/* Dynamic Fill Slider Styles */
.slider-container {
  margin-bottom: 14px;
  width: 100%;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 4px;
  font-weight: 500;
}

.premium-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #cbd5e1;
  outline: none;
  transition: background 0.05s linear;
}

.premium-slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 3px;
  background: transparent;
}

.premium-slider::-moz-range-track {
  height: 6px;
  border-radius: 3px;
  background: transparent;
}

.premium-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--active-color);
  border: 2px solid #ffffff;
  box-shadow: 0 0 6px rgba(37, 99, 235, 0.5);
  cursor: pointer;
  transition: transform 0.1s;
}

.premium-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--active-color);
  border: 2px solid #ffffff;
  box-shadow: 0 0 6px rgba(37, 99, 235, 0.5);
  cursor: pointer;
  transition: transform 0.1s;
}

.ticks {
  display: flex;
  justify-content: space-between;
  padding: 0 4px;
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  width: 100%;
  overflow: hidden;
  font-weight: 500;
}

.ticks span {
  cursor: pointer;
  white-space: nowrap;
}

.ticks span:hover {
  color: var(--active-color);
}

/* Fine Tuning controls */
.fine-tuning-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 4px;
  width: 100%;
}

.button-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  width: 100%;
}

.tune-buttons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  width: 100%;
}

.btn-tune {
  width: 100%;
  min-width: 0;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--active-color);
  padding: 6px 2px;
  border-radius: 6px;
  font-size: 0.8rem !important;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: none !important;
  text-align: center;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.btn-tune:hover {
  background: #eff6ff;
  border-color: var(--active-color);
}

.octave-buttons-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  width: 100%;
}

.btn-octave {
  width: 100%;
  min-width: 0;
  background: #eff6ff;
  border: 1px solid var(--active-color);
  color: var(--active-color);
  padding: 8px 6px;
  border-radius: 6px;
  font-size: 0.82rem !important;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: none !important;
  text-align: center;
  white-space: nowrap;
}

.btn-octave:hover {
  background: var(--active-color);
  color: #ffffff;
}

/* Streamlined Oscilloscope Canvas Card */
.visualizer-card {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.visualizer-options {
  display: flex;
  gap: 4px;
  background: #ffffff;
  padding: 3px;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
}

.btn-vis-mode {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 4px;
  transition: all 0.2s;
}

.btn-vis-mode.active {
  background: var(--active-color);
  color: #ffffff;
}

.canvas-body {
  flex: 1;
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  position: relative;
  overflow: hidden;
  min-height: 120px;
  max-height: 180px;
  display: flex;
  width: 100%;
}

.visualizer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.card-footer {
  margin-top: 8px;
}

.canvas-legend {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  font-weight: 500;
}

#visual-freq-readout {
  color: var(--active-color);
  font-weight: 600;
}

/* Tabs for Sweeps / Overtones */
.tone-tabs-container {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--panel-radius);
  padding: 16px 20px;
  width: 100%;
  min-width: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.tab-headers {
  display: flex;
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 16px;
  gap: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.tab-headers::-webkit-scrollbar {
  display: none;
}

.tab-link {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 0 10px 0;
  position: relative;
  transition: color 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.tab-link:hover {
  color: var(--active-color);
}

.tab-link.active {
  color: var(--active-color);
}

.tab-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--active-color);
}

.tab-content {
  display: none;
  width: 100%;
}

.tab-content.active {
  display: block;
  animation: fade-in 0.3s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Presets Panel */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  width: 100%;
}

.preset-group {
  min-width: 0;
}

.preset-group h4 {
  font-size: 0.9rem;
  margin-bottom: 12px;
  color: #000000;
  font-weight: 600;
}

.preset-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  width: 100%;
}

.btn-preset {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: var(--active-color);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.2s;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  line-height: 1.3;
  width: 100%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.btn-preset:hover {
  background: #eff6ff;
  border-color: var(--active-color);
  transform: translateY(-2px);
}

/* Sweep Panel layout */
.sweep-panel-layout {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
}

.sweep-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
  width: 100%;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.input-group label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.input-group input, 
.input-group select {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #000000;
  padding: 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
  box-sizing: border-box;
}

.input-group input:focus, 
.input-group select:focus {
  border-color: var(--active-color);
}

.sweep-progress-container {
  background: #ffffff;
  border-radius: 10px;
  padding: 12px;
  border: 1px solid #cbd5e1;
  width: 100%;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  width: 0%;
  height: 100%;
  background: var(--active-color);
  transition: width 0.1s linear;
}

.sweep-frequency-feedback {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  display: block;
  text-align: center;
}

.sweep-action-container {
  display: flex;
  justify-content: center;
  width: 100%;
}

.btn-sweep-play {
  background: var(--active-color) !important;
  color: #ffffff !important;
  padding: 10px 24px !important;
  border-radius: 8px;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
  border: none !important;
  cursor: pointer;
}

.btn-sweep-stop {
  background: #dc2626 !important;
  color: #ffffff !important;
  padding: 10px 24px !important;
  border-radius: 8px;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
  border: none !important;
  cursor: pointer;
}

/* Harmonics & Overtones Mixer */
.harmonics-mixer-container {
  width: 100%;
}

.harmonics-mixer-container .panel-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.harmonics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  width: 100%;
}

.overtone-channel {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-width: 0;
  width: 100%;
}

.overtone-channel.enabled {
  border-color: var(--active-color);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.15);
}

.channel-header {
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 8px;
}

/* Custom Checkbox */
.premium-checkbox {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 26px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  user-select: none;
}

.premium-checkbox input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 16px;
  width: 16px;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  transition: all 0.2s;
}

.premium-checkbox:hover input ~ .checkmark {
  background-color: #eff6ff;
}

.premium-checkbox input:checked ~ .checkmark {
  background-color: var(--active-color);
  border-color: var(--active-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.premium-checkbox input:checked ~ .checkmark:after {
  display: block;
}

.premium-checkbox .checkmark:after {
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-label {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.premium-checkbox input:checked ~ .checkbox-label {
  color: #000000;
}

.channel-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.channel-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.channel-row label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.channel-row input[type="number"], 
.channel-row select {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  color: #000000;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  outline: none;
  width: 100%;
  box-sizing: border-box;
}

.channel-row input[type="number"]:focus, 
.channel-row select:focus {
  border-color: var(--active-color);
}

.channel-freq-readout {
  font-size: 0.78rem;
  color: var(--active-color);
  font-weight: 600;
  margin-top: 2px;
  text-align: right;
}

.channel-vol-display {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: right;
}

.vol-row {
  margin-top: 4px;
}

/* Breakpoint Optimizations */
@media (max-width: 900px) {
  .tone-gen-grid {
    grid-template-columns: 1fr;
  }
  .volume-container {
    max-width: 100%;
    width: 100%;
  }
}

@media (max-width: 600px) {
  .tone-gen-layout {
    padding: 12px;
    margin: 10px auto;
  }
  .tone-card {
    padding: 12px 14px;
  }
  .hero-play-deck {
    padding: 12px;
    gap: 10px;
  }
  .play-pulse-btn {
    width: 62px;
    height: 62px;
  }
  .freq-digital-display {
    font-size: 2.2rem;
  }
  .hz-label {
    font-size: 1.1rem;
  }
  .wave-tab {
    flex: 1 1 calc(50% - 6px);
  }
  .ticks span:nth-child(even) {
    display: none;
  }
}

.mode-badge-container {
  display: flex;
  align-items: center;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.mode-badge.tone-mode {
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border: 1px solid rgba(37, 99, 235, 0.25);
}

.mode-badge.sweep-mode {
  background: rgba(147, 51, 234, 0.1);
  color: #9333ea;
  border: 1px solid rgba(147, 51, 234, 0.25);
}