/* 
  Local FM Radio network Broadcast Studio - High Contrast Broadcast Theme
  Clean Slate / Charcoal / Emerald / Amber - Strictly No Purple Gradients
*/

:root {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-focus: #0284c7;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-active: #075985;
  
  --success: #059669;
  --success-hover: #047857;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  
  --amber: #d97706;
  --amber-bg: #fffbeb;
  
  --on-air: #dc2626;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
}

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

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.on-air-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #1e293b;
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.blinking-dot {
  width: 10px;
  height: 10px;
  background-color: var(--on-air);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--on-air);
  animation: pulse 1.4s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.85); }
}

.brand-text h1 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}

.brand-text p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Status Badges */
.header-status {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  padding: 4px 6px 4px 12px;
  border-radius: 20px;
}

.user-email {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-main);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 14px;
}

.badge {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-neutral {
  background-color: #f1f5f9;
  color: #475569;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.badge-warning {
  background-color: var(--amber-bg);
  color: var(--amber);
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 4px;
  overflow-x: auto;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: none;
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  font-family: inherit;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
  background-color: #f1f5f9;
}

.tab-btn.active {
  color: var(--primary);
  background-color: var(--bg-card);
  border-bottom: 3px solid var(--primary);
  box-shadow: 0 -2px 6px rgba(0,0,0,0.03);
}

.tab-icon {
  font-size: 1.15rem;
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Grid Layout */
.grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.max-w-card {
  max-width: 720px;
  margin: 0 auto;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background-color: #ffffff;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-wrap: wrap;
  gap: 12px;
}

.card-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Form Controls */
.large-textarea {
  width: 100%;
  padding: 16px;
  font-family: inherit;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-main);
  background-color: #f8fafc;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  resize: vertical;
  transition: border-color 0.15s;
}

.large-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: #ffffff;
}

.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.action-bar.right {
  justify-content: flex-end;
}

.preset-group {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.select-input, .text-input {
  padding: 10px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: #ffffff;
  color: var(--text-main);
}

.select-input:focus, .text-input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.text-input {
  width: 100%;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 700;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-col label {
  font-size: 0.85rem;
  font-weight: 600;
}

.toggle-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.toggle-control input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary);
}

.toggle-box {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.toggle-box.highlighted-toggle {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
}

.help-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn-hero {
  width: 100%;
  padding: 16px 24px;
  font-size: 1.15rem;
}

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: #e2e8f0;
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: var(--success-hover);
}

.btn-large {
  padding: 14px 24px;
  font-size: 1.05rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Preview Box */
.preview-box {
  background-color: var(--amber-bg);
  border: 1px solid #fde68a;
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preview-box h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--amber);
}

.preview-box p {
  font-size: 0.95rem;
  color: #78350f;
  background: #ffffff;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #fef3c7;
}

.changes-list {
  padding-left: 20px;
  font-size: 0.85rem;
  color: #92400e;
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.empty-sub {
  font-size: 0.85rem;
  color: var(--text-dim);
  max-width: 380px;
  margin-top: 6px;
}

/* Audio Player */
.player-box {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.player-box audio {
  width: 100%;
  height: 48px;
}

.download-action {
  display: flex;
}

.download-action .btn {
  width: 100%;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.metric-box {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-box.highlighted {
  background-color: var(--success-bg);
  border-color: var(--success-border);
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.metric-box.highlighted .metric-label {
  color: var(--success);
}

.metric-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.metric-box.highlighted .metric-value {
  color: var(--success);
}

/* Callouts */
.callout {
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  line-height: 1.5;
}

.callout-success {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: #065f46;
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  background-color: #f8fafc;
  transition: all 0.2s ease;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--primary);
  background-color: #f0f9ff;
}

.drop-zone-icon {
  font-size: 2.8rem;
  margin-bottom: 10px;
}

.drop-zone-sub {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

.file-input-hidden {
  display: none;
}

.file-info-badge {
  background-color: #e0f2fe;
  border: 1px solid #bae6fd;
  color: #0369a1;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

/* =================================================================
   DSP RACK STYLES
   ================================================================= */
.dsp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 1080px) {
  .dsp-grid {
    grid-template-columns: 1fr;
  }
}

.dsp-card-panel {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.dsp-panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.dsp-panel-title h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.slider-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-header label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
}

.slider-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  background-color: #e0f2fe;
  padding: 2px 8px;
  border-radius: 4px;
}

.slider-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* High Contrast Range Inputs */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  cursor: pointer;
  transition: transform 0.1s, background-color 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  background: var(--primary-hover);
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

.dictionary-table, .comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.dictionary-table th, .dictionary-table td,
.comparison-table th, .comparison-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.dictionary-table th, .comparison-table th {
  background-color: #f8fafc;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.comparison-table td {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
}

.val-highlight {
  color: var(--success);
  font-weight: 700;
}

.btn-remove-row {
  background: none;
  border: none;
  color: var(--danger);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.btn-remove-row:hover {
  background-color: var(--danger-bg);
}

/* Info Pills */
.info-pill-box {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.pill {
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-main);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #1e293b;
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideUp 0.25s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Footer */
.app-footer {
  margin-top: 36px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.hidden {
  display: none !important;
}