/**
 * Estilos principales - Cortador, divisor y editor de MP3
 * Fijate Tools
 */

:root,
[data-theme="dark"] {
  color-scheme: dark;
  --font-main: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --bg-app: #070b14;
  --bg-card: #111827;
  --bg-surface: #111827;
  --bg-surface-elevated: #1e293b;
  --bg-surface-hover: #293548;
  --bg-input: #0b1220;

  --border-color: rgba(148, 163, 184, 0.16);
  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);

  --text-main: #f8fafc;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --primary: #0ea5e9;
  --primary-hover: #0284c7;
  --primary-light: rgba(14, 165, 233, 0.14);

  --success: #10b981;
  --success-hover: #059669;
  --success-light: rgba(16, 185, 129, 0.14);

  --danger: #f43f5e;
  --danger-light: rgba(244, 63, 94, 0.14);

  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.14);

  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --shadow-card: 0 10px 28px -6px rgba(0, 0, 0, 0.45);
}

[data-theme="light"] {
  color-scheme: light;
  --bg-app: #f1f5f9;
  --bg-card: #ffffff;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f8fafc;
  --bg-surface-hover: #e2e8f0;
  --bg-input: #f8fafc;

  --border-color: #cbd5e1;
  --border-subtle: #e2e8f0;
  --border-strong: #94a3b8;

  --text-main: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #475569;

  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: rgba(2, 132, 199, 0.12);

  --success: #059669;
  --success-hover: #047857;
  --success-light: rgba(5, 150, 105, 0.12);

  --danger: #e11d48;
  --danger-light: rgba(225, 29, 72, 0.12);

  --warning: #d97706;
  --warning-light: rgba(217, 119, 6, 0.14);

  --shadow-card: 0 6px 22px -4px rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-main);
  background: radial-gradient(circle at 50% 0%, rgba(14, 165, 233, 0.08) 0%, transparent 55%), var(--bg-app);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6,
.brand-title,
.section-title {
  font-family: var(--font-heading);
}

.mono,
code {
  font-family: var(--font-mono);
}

.tool-layout {
  flex: 1 0 auto;
  margin-top: 1rem;
  margin-bottom: 2.5rem;
}

/* Badges de barra rápida */
.privacy-pill,
.engine-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.36rem 0.78rem;
  border-radius: 999px;
  white-space: nowrap;
}

.privacy-pill {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.28);
}

.engine-pill {
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
}

.engine-pill.engine-lossless {
  background: var(--success-light);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.35);
}

.engine-pill.engine-dsp {
  background: var(--primary-light);
  color: var(--primary);
  border-color: rgba(14, 165, 233, 0.3);
}

/* Botones generales */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 40px;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-main);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.12s ease;
  text-decoration: none;
  white-space: nowrap;
}

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

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

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

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

.btn-emerald:hover:not(:disabled) {
  background-color: var(--success-hover);
  border-color: var(--success-hover);
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-surface-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
}

.btn-ghost.active {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-lg {
  min-height: 46px;
  padding: 0.7rem 1.35rem;
  font-size: 0.94rem;
}

.btn-sm {
  min-height: 40px;
  padding: 0.42rem 0.8rem;
  font-size: 0.82rem;
}

.btn-xs {
  min-height: 36px;
  padding: 0.35rem 0.7rem;
  font-size: 0.79rem;
}

.btn-icon-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.15s ease;
}

.btn-icon-sm:hover:not(:disabled) {
  background: var(--bg-surface-hover);
}

.btn-icon-sm:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

.btn-remove-item:hover:not(:disabled) {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(244, 63, 94, 0.4);
}

/* Formularios y selects responsivos */
.form-control,
.form-select,
.split-name-input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 40px;
  padding: 0.48rem 0.78rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.88rem;
  box-sizing: border-box;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus,
.split-name-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px !important;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 15px 15px;
}

[data-theme="light"] .form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.form-select option {
  background-color: var(--bg-card);
  color: var(--text-main);
}

[data-theme="light"] .form-select option {
  background-color: #ffffff;
  color: #0f172a;
}

.range-slider {
  width: 100%;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Tarjeta principal del estudio de audio */
.studio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: clamp(1rem, 2vw, 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
  max-width: 100%;
}

/* Pestañas principales de modo */
.mode-tabs-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  padding: 0.4rem;
  border-radius: var(--radius-lg);
}

.mode-tab-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 44px;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.16s ease;
}

.mode-tab-btn:hover {
  color: var(--text-main);
  background: rgba(148, 163, 184, 0.08);
}

.mode-tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
}

/* Dropzone compacta de audio */
.audio-file-dropbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.9rem 1.1rem;
  background: var(--bg-input);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color 0.18s ease, background-color 0.18s ease;
  margin-bottom: 1rem;
}

.audio-file-dropbar:hover,
.audio-file-dropbar.dragover,
#single-editor-section.dragover-wave .waveform-stage {
  border-color: var(--primary);
  background: var(--primary-light);
}

.file-drop-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
  flex: 1 1 240px;
}

.file-drop-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-drop-meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.file-drop-meta strong {
  font-size: 0.95rem;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-drop-meta span {
  font-size: 0.79rem;
  color: var(--text-muted);
}

/* Visualizador de forma de onda y transporte */
.waveform-stage {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

.waveform-canvas-wrap {
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
}

.waveform-canvas {
  display: block;
  width: 100%;
  height: 236px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.pan-slider-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pan-slider-label {
  font-size: 0.74rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.transport-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.transport-left,
.transport-right {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.time-readout-badge {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.zoom-control-group {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-md);
}

.zoom-control-group .range-slider {
  width: 90px;
}

.zoom-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  min-width: 34px;
  text-align: center;
}

/* Submodos de corte */
.submode-bar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.submode-btn {
  flex: 1 1 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.16s ease;
}

.submode-btn.active[data-submode="trim"] {
  background: var(--success-light);
  color: var(--success);
  border-color: var(--success);
}

.submode-btn.active[data-submode="remove"] {
  background: var(--danger-light);
  color: var(--danger);
  border-color: var(--danger);
}

/* Tarjetas de tiempo inicio/fin */
.time-boxes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.time-box-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 0;
}

.time-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.time-box-header label {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-main);
}

.nudge-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
}

.nudge-btn {
  min-height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
}

.nudge-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
}

/* KPIs y presets */
.presets-kpi-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.preset-chips {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.preset-chip {
  min-height: 36px;
  padding: 0.35rem 0.72rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
}

.preset-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.kpi-inline-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.kpi-pill {
  display: flex;
  flex-direction: column;
}

.kpi-pill span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.kpi-pill strong {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--success);
}

/* Lista de tramos a quitar y división */
.mode-hint-text {
  margin: 0 0 0.85rem 0;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.segment-list-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0 0.65rem;
}

.segments-stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.segment-row,
.split-part-card,
.merge-track-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
}

.segment-row.active {
  border-color: var(--danger);
  background: var(--danger-light);
}

.segment-focus-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1 1 auto;
  min-width: 0;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.86rem;
  cursor: pointer;
  padding: 0.25rem 0;
  text-align: left;
}

.seg-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.55rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.seg-badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}

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

.seg-badge-sky {
  background: var(--primary-light);
  color: var(--primary);
}

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

.empty-list-note {
  padding: 1rem;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Acordeón de refinamiento y fundidos */
.refinement-box {
  margin-top: 1.1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-input);
  overflow: hidden;
}

.refinement-box summary {
  padding: 0.85rem 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.refinement-box summary::-webkit-details-marker {
  display: none;
}

.refinement-content {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 1rem;
}

.slider-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.slider-field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.83rem;
}

.slider-field-head label {
  font-weight: 600;
  color: var(--text-main);
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
}

.normalize-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.25rem;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-main);
}

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

/* Tarjeta de exportación */
.export-card {
  margin-top: 1.15rem;
  padding: 1.1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-surface-elevated);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.export-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.format-chips {
  display: flex;
  gap: 0.45rem;
}

.cut-format-btn {
  min-height: 40px;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
}

.cut-format-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.mp3-options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  flex: 1 1 320px;
}

.option-inline {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.option-inline label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
}

.engine-notice {
  padding: 0.72rem 0.95rem;
  border-radius: var(--radius-md);
  font-size: 0.83rem;
  line-height: 1.45;
  border: 1px solid transparent;
}

.engine-notice.notice-lossless {
  background: var(--success-light);
  color: var(--text-main);
  border-color: rgba(16, 185, 129, 0.35);
}

.engine-notice.notice-info {
  background: var(--primary-light);
  color: var(--text-main);
  border-color: rgba(14, 165, 233, 0.28);
}

.engine-notice.notice-warn {
  background: var(--warning-light);
  color: var(--text-main);
  border-color: rgba(245, 158, 11, 0.35);
}

.export-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.progress-wrap {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1 1 200px;
}

.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--bg-input);
  overflow: hidden;
}

.progress-fill {
  width: 0%;
  height: 100%;
  background: var(--success);
  transition: width 0.2s ease;
}

.progress-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Panel Dividir */
.split-generators-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.split-gen-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 0;
}

.split-gen-card h3 {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-main);
}

.inline-input-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.inline-input-btn .form-control {
  flex: 1 1 0%;
  width: 0;
  min-width: 0;
}

.split-part-left {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 1 1 220px;
  min-width: 0;
}

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

.split-part-meta strong {
  color: var(--text-main);
}

.split-part-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.split-zip-bar {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.split-zip-options,
.inline-select-pair {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.inline-select-pair .form-select {
  width: auto;
  min-width: 120px;
}

/* Panel Unir */
.merge-drop-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.merge-track-info {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1 1 220px;
  min-width: 0;
}

.merge-track-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.merge-track-name {
  font-size: 0.88rem;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.merge-track-meta {
  font-size: 0.77rem;
  color: var(--text-muted);
}

.merge-track-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.merge-settings-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

/* Modales y Toasts */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem 0.4rem;
}

.modal-body {
  padding: 1.2rem 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.modal-footer {
  padding: 0.9rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
}

.shortcuts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.shortcuts-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.7rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.18rem 0.5rem;
  border-radius: 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-main);
}

.toast-container {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 1300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.72rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card);
  font-size: 0.84rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.22s ease;
  max-width: min(380px, calc(100vw - 2rem));
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-success {
  border-color: var(--success);
}

.toast-success svg {
  color: var(--success);
}

.toast-error {
  border-color: var(--danger);
}

.toast-error svg {
  color: var(--danger);
}

/* Responsive móvil y tablet */
@media (max-width: 900px) {
  .split-generators-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {

  .nudge-btn,
  .preset-chip,
  .btn-xs,
  .btn-icon-sm {
    min-height: 40px;
  }

  .btn-icon-sm {
    min-width: 40px;
    height: 40px;
  }

  .mode-tabs-bar {
    grid-template-columns: 1fr;
  }

  .time-boxes-grid,
  .refinement-content,
  .mp3-options-grid,
  .merge-settings-grid {
    grid-template-columns: 1fr;
  }

  .waveform-canvas {
    height: 200px;
  }

  .zoom-control-group .range-slider {
    width: 72px;
  }

  .transport-left,
  .transport-right,
  .export-action-row>.btn,
  .split-zip-bar>.btn {
    width: 100%;
    justify-content: space-between;
  }

  .split-part-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .inline-select-pair {
    width: 100%;
  }

  .inline-select-pair .form-select {
    width: 100%;
    flex: 1 1 100%;
  }

  .merge-drop-actions {
    width: 100%;
  }

  .merge-drop-actions .btn {
    flex: 1 1 100%;
  }
}