/* ==========================================================================
   LOFI AMBIENT SONIFIER - STYLESHEET
   Dark Glassmorphism UI, Custom Controls, Cassette Animations & Grid Layout
   ========================================================================== */

:root {
  --bg-dark: #080b12;
  --bg-card: rgba(15, 22, 36, 0.75);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  
  --color-cyan: #00f0ff;
  --color-amber: #ff9d00;
  --color-blue: #3b82f6;
  --color-purple: #a855f7;
  --color-text: #f0f4f8;
  --color-text-muted: #8a99ad;

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-digital: 'VT323', monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--color-text);
  font-family: var(--font-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Ambient glow blobs */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: var(--color-cyan);
  top: -100px;
  left: -100px;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: var(--color-amber);
  bottom: -150px;
  right: -150px;
}

.glow-3 {
  width: 450px;
  height: 450px;
  background: var(--color-purple);
  top: 40%;
  left: 35%;
}

/* Layout Container */
.app-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 1.5rem;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cassette-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(255, 157, 0, 0.2));
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
}

.brand-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  background: linear-gradient(90deg, #ffffff, #a855f7, var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Buttons */
.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: 9999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), #00a8ff);
  color: #040914;
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-export {
  background: rgba(255, 157, 0, 0.12);
  border-color: rgba(255, 157, 0, 0.3);
  color: var(--color-amber);
}

.btn-export:hover {
  background: rgba(255, 157, 0, 0.22);
  box-shadow: 0 0 16px rgba(255, 157, 0, 0.3);
}

.btn-export.recording {
  background: rgba(255, 50, 50, 0.25);
  border-color: rgba(255, 50, 50, 0.6);
  color: #ff5555;
  animation: pulseRecording 1.5s infinite;
}

@keyframes pulseRecording {
  0% { box-shadow: 0 0 0 0 rgba(255, 50, 50, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(255, 50, 50, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 50, 50, 0); }
}

/* Glass Panels */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 16px;
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.panel-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Visualizer Panel */
.visualizer-metrics {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.metric-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  border: 1px solid transparent;
}

.metric-pollution {
  background: rgba(0, 240, 255, 0.1);
  border-color: rgba(0, 240, 255, 0.25);
  color: var(--color-cyan);
}

.metric-ember {
  background: rgba(255, 157, 0, 0.1);
  border-color: rgba(255, 157, 0, 0.25);
  color: var(--color-amber);
}

.metric-hydro {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.25);
  color: var(--color-blue);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: 12px;
  overflow: hidden;
  background: #04070f;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

#mainCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-overlay-cassette {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(8, 12, 22, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  pointer-events: none;
}

.spool {
  font-size: 1rem;
  color: var(--color-amber);
  transition: transform 0.1s linear;
}

.spool.spinning {
  animation: spinSpool 3s linear infinite;
}

@keyframes spinSpool {
  100% { transform: rotate(360deg); }
}

.cassette-label {
  font-family: var(--font-digital);
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: 0.1em;
}

/* Main Grid Layout */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 1.5rem;
}

@media (max-width: 960px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

/* Telemetry Cards */
.column-telemetry {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.telemetry-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-left: 3px solid var(--color-text-muted);
}

.card-pollution {
  border-left-color: var(--color-cyan);
}

.card-ember {
  border-left-color: var(--color-amber);
}

.card-hydro {
  border-left-color: var(--color-blue);
}

.card-title-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.card-pollution .card-icon { color: var(--color-cyan); background: rgba(0, 240, 255, 0.1); }
.card-ember .card-icon { color: var(--color-amber); background: rgba(255, 157, 0, 0.1); }
.card-hydro .card-icon { color: var(--color-blue); background: rgba(59, 130, 246, 0.1); }

.card-title-bar h3 {
  font-size: 1rem;
  font-weight: 700;
}

.card-title-bar p {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.status-pill {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
}

.control-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-row label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
}

.label-val-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.val-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-cyan);
}

.badge-amber { color: var(--color-amber); }
.badge-blue { color: var(--color-blue); }

.custom-select {
  width: 100%;
  background: rgba(6, 10, 18, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-text);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--color-cyan);
}

/* Custom Sliders */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  transition: transform 0.15s ease;
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-cyan::-webkit-slider-thumb { background: var(--color-cyan); box-shadow: 0 0 12px var(--color-cyan); }
.slider-amber::-webkit-slider-thumb { background: var(--color-amber); box-shadow: 0 0 12px var(--color-amber); }
.slider-blue::-webkit-slider-thumb { background: var(--color-blue); box-shadow: 0 0 12px var(--color-blue); }

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.telemetry-readout {
  display: flex;
  justify-content: space-between;
  background: rgba(4, 7, 14, 0.6);
  padding: 0.4rem 0.65rem;
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.telemetry-readout strong {
  color: var(--color-text);
  font-family: var(--font-mono);
}

/* Mixer Section */
.column-mixer {
  display: flex;
  flex-direction: column;
}

.mixer-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.preset-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.preset-group label {
  color: var(--color-text-muted);
}

.mixer-channels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 600px) {
  .mixer-channels-grid {
    grid-template-columns: 1fr;
  }
}

.mixer-card {
  background: rgba(4, 7, 14, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card-accent-cyan { border-top: 2px solid var(--color-cyan); }
.card-accent-amber { border-top: 2px solid var(--color-amber); }
.card-accent-blue { border-top: 2px solid var(--color-blue); }

.channel-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.channel-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.channel-header h4 {
  font-size: 0.88rem;
  font-weight: 700;
}

.btn-mute {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--color-cyan);
  cursor: pointer;
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

.btn-mute.muted {
  color: var(--color-text-muted);
  opacity: 0.5;
}

.btn-mute.pending-beat {
  animation: pendingBeatPulse 0.4s ease-in-out infinite alternate;
  color: var(--color-amber) !important;
  opacity: 1 !important;
}

@keyframes pendingBeatPulse {
  0% { transform: scale(1); filter: drop-shadow(0 0 2px var(--color-amber)); }
  100% { transform: scale(1.25); filter: drop-shadow(0 0 8px var(--color-amber)); }
}

.channel-desc {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.fader-wrapper {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.2rem;
}

.fader-range {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
  cursor: pointer;
}

.fader-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  cursor: pointer;
}

.fader-readout {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  width: 32px;
  text-align: right;
}

/* Tape FX Bar */
.tape-fx-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  background: rgba(4, 7, 14, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 1rem;
  margin-top: auto;
}

.fx-control {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.fx-control label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
}

.fx-control strong {
  color: var(--color-text);
  font-family: var(--font-mono);
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 1.5rem 0;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.app-footer a {
  color: var(--color-cyan);
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

.footer-meta {
  font-size: 0.75rem;
  margin-top: 0.3rem;
  opacity: 0.7;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 14, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 20px;
  width: 90%;
  max-width: 580px;
  padding: 1.75rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-header h2 {
  font-size: 1.2rem;
  color: var(--color-cyan);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-body {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.modal-body h3 {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-top: 0.5rem;
}

.modal-body ul {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.modal-footer {
  margin-top: 1.5rem;
  text-align: right;
}