/**
 * Estilos canónicos para Calculadora VDOT de Jack Daniels (Running científico)
 * Fijate Tools • Suite Oficial
 */

:root {
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Colores tema oscuro (predeterminado) */
  --bg-app: #0b0f17;
  --bg-card: #111827;
  --bg-card-subtle: #162032;
  --bg-input: #1f293d;
  --border-color: #28354d;
  --border-hover: #3d4f73;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;
  --accent-cyan: #06b6d4;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-violet: #8b5cf6;

  /* Zonas de Daniels */
  --zone-e-color: #10b981;
  --zone-e-bg: rgba(16, 185, 129, 0.12);
  --zone-e-border: rgba(16, 185, 129, 0.35);

  --zone-m-color: #3b82f6;
  --zone-m-bg: rgba(59, 130, 246, 0.12);
  --zone-m-border: rgba(59, 130, 246, 0.35);

  --zone-t-color: #f59e0b;
  --zone-t-bg: rgba(245, 158, 11, 0.12);
  --zone-t-border: rgba(245, 158, 11, 0.35);

  --zone-i-color: #ef4444;
  --zone-i-bg: rgba(239, 68, 68, 0.12);
  --zone-i-border: rgba(239, 68, 68, 0.35);

  --zone-r-color: #a855f7;
  --zone-r-bg: rgba(168, 85, 247, 0.12);
  --zone-r-border: rgba(168, 85, 247, 0.35);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.45);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
}

[data-theme="light"] {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;

  --zone-e-bg: #ecfdf5;
  --zone-e-border: #a7f3d0;
  --zone-e-color: #047857;

  --zone-m-bg: #eff6ff;
  --zone-m-border: #bfdbfe;
  --zone-m-color: #1d4ed8;

  --zone-t-bg: #fffbeb;
  --zone-t-border: #fde68a;
  --zone-t-color: #b45309;

  --zone-i-bg: #fef2f2;
  --zone-i-border: #fecaca;
  --zone-i-color: #b91c1c;

  --zone-r-bg: #faf5ff;
  --zone-r-border: #e9d5ff;
  --zone-r-color: #7e22ce;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 20px rgba(0,0,0,0.08);
}

/* Reset y Contención Base */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6,
.hero-title,
.brand-title,
.section-block-title,
.faq-section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.015em;
  margin-top: 0;
}

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1, "zero" 1;
}

/* Layout Principal */
.tool-layout {
  max-width: 1200px;
  width: 100%;
  margin: 1.25rem auto 3rem;
  padding: 0 1rem;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: block;
  width: 100%;
}

@media (min-width: 1536px) {
  .tool-with-sidebar {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
  }
  .tool-main-content {
    flex: 1 1 0%;
    min-width: 0;
  }
}

.card-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

@media (max-width: 640px) {
  .card-main {
    padding: 1.15rem;
    border-radius: var(--radius-lg);
  }
}

/* Hero Introductorio */
.tool-hero-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 1.75rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #60a5fa;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  margin-bottom: 0.75rem;
}

[data-theme="light"] .hero-badge {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}

.hero-title {
  font-size: 1.75rem;
  line-height: 1.25;
  margin-bottom: 0.65rem;
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 1.4rem;
  }
}

.hero-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  max-width: 900px;
}

/* Barra de Presets Rápidos */
.presets-bar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.presets-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.presets-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preset-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 38px;
}

.preset-chip:hover {
  border-color: var(--accent-primary);
  background: rgba(37, 99, 235, 0.08);
}

.preset-chip.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 600;
}

.preset-chip .chip-badge {
  font-size: 0.7rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  color: inherit;
}

/* Formulario en 2 Columnas */
.calculator-form-section {
  margin-bottom: 2rem;
}

.form-grid-two-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

@media (max-width: 820px) {
  .form-grid-two-cols {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
  }
}

.form-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.card-header-clean {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.card-step-badge {
  background: var(--accent-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-step-title {
  font-size: 1.05rem;
  margin: 0 0 0.15rem 0;
}

.card-step-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin: 0;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.form-select,
.form-control {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 44px;
  min-height: 44px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  padding: 0 0.85rem;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-select {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  padding-right: 40px;
  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='%239ca3af' 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 14px center;
  background-size: 16px;
  appearance: none;
}

.form-select:focus,
.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

.input-with-suffix {
  display: flex;
  align-items: center;
  position: relative;
}

.input-with-suffix input {
  padding-right: 70px;
}

.input-suffix {
  position: absolute;
  right: 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
  pointer-events: none;
}

/* Entradas de Tiempo */
.time-inputs-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.time-field-col {
  flex: 1 1 0%;
  min-width: 0;
}

.time-field-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 0.3rem;
  font-weight: 500;
}

.time-input {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 700;
  padding: 0;
}

.time-sep {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dim);
  margin-top: 1.1rem;
}

.pace-feedback-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(37, 99, 235, 0.08);
  border: 1px dashed var(--accent-primary);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.pace-feedback-pill strong {
  color: var(--text-main);
}

.form-actions-inline {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
}

.btn-primary-calculate {
  flex: 1 1 0%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  height: 44px;
  min-height: 44px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary-calculate:hover {
  background: var(--accent-primary-hover);
}

.btn-primary-calculate:active {
  transform: translateY(1px);
}

.btn-secondary-reset {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  height: 44px;
  min-height: 44px;
  padding: 0 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary-reset:hover {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border-hover);
}

/* Opciones meteorológicas avanzadas */
.advanced-weather-toggle {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color);
}

.weather-summary-title {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.weather-summary-title:hover {
  color: var(--text-main);
}

.weather-inputs-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

@media (max-width: 640px) {
  .weather-inputs-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.form-label-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0.3rem;
}

/* Scorecard Principal VDOT */
.vdot-scorecard-section {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.vdot-scorecard-grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 1.75rem;
  align-items: center;
}

@media (max-width: 900px) {
  .vdot-scorecard-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.vdot-main-kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.kpi-mini-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.vdot-big-number-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
}

.vdot-number {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent-primary);
  letter-spacing: -0.03em;
}

[data-theme="dark"] .vdot-number {
  color: #60a5fa;
}

.vdot-unit-text {
  font-size: 0.95rem;
  color: var(--text-dim);
  font-weight: 600;
}

.vdot-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  margin: 0.75rem 0;
}

[data-theme="light"] .vdot-level-badge {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.level-indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.vdot-kpi-summary {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0.5rem 0 1rem 0;
  line-height: 1.45;
}

/* Medidor VDOT */
.vdot-meter-container {
  margin-top: 1rem;
}

.vdot-meter-track {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 9999px;
  position: relative;
  overflow: visible;
}

.vdot-meter-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, #3b82f6 0%, #10b981 40%, #f59e0b 70%, #ef4444 100%);
  transition: width 0.5s ease;
}

.vdot-meter-marker {
  position: absolute;
  top: -4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--accent-primary);
  transform: translateX(-50%);
  box-shadow: 0 0 6px rgba(0,0,0,0.4);
  transition: left 0.5s ease;
}

.vdot-meter-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

/* Tarjetas Secundarias */
.vdot-secondary-kpis-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 600px) {
  .vdot-secondary-kpis-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.secondary-kpi-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.15rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sec-kpi-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.1);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

[data-theme="light"] .sec-kpi-icon {
  color: var(--accent-primary);
  background: #eff6ff;
}

.sec-kpi-title {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.15rem;
}

.sec-kpi-val {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.sec-kpi-val small {
  font-size: 0.8rem;
  font-weight: normal;
  color: var(--text-dim);
}

.sec-kpi-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Sección de Predicción de Marcas */
.prediction-section {
  margin-bottom: 2.5rem;
}

.section-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.section-block-title {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
}

.section-block-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  max-width: 800px;
}

.unit-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toggle-label {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.toggle-buttons-group {
  display: inline-flex;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.btn-unit-toggle {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-unit-toggle.active {
  background: var(--accent-primary);
  color: #ffffff;
}

/* Tablas Responsivas */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}

.prediction-table,
.track-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
  white-space: nowrap;
}

.prediction-table th,
.track-table th {
  background: var(--bg-card-subtle);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.prediction-table td,
.track-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.prediction-table tr:last-child td,
.track-table tr:last-child td {
  border-bottom: none;
}

.prediction-table tr:hover,
.track-table tr:hover {
  background: rgba(37, 99, 235, 0.04);
}

.td-highlight {
  font-weight: 700;
  color: #60a5fa !important;
}

[data-theme="light"] .td-highlight {
  color: var(--accent-primary) !important;
}

.diff-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.diff-badge.diff-plus {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.diff-badge.diff-minus {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.diff-badge.diff-equal {
  background: rgba(156, 163, 175, 0.15);
  color: var(--text-muted);
}

.table-note-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.table-note-alert svg {
  color: var(--accent-amber);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Zonas de Entrenamiento de Daniels (5 Zonas) */
.training-zones-section {
  margin-bottom: 2.5rem;
}

.btn-action-wristband {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 40px;
}

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

.zones-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 640px) {
  .zones-cards-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.zone-card {
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card-subtle);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.zone-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.zone-e { border-left: 4px solid var(--zone-e-color); }
.zone-m { border-left: 4px solid var(--zone-m-color); }
.zone-t { border-left: 4px solid var(--zone-t-color); }
.zone-i { border-left: 4px solid var(--zone-i-color); }
.zone-r { border-left: 4px solid var(--zone-r-color); }

.zone-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.zone-pill {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.zone-pill-e { background: var(--zone-e-bg); color: var(--zone-e-color); border: 1px solid var(--zone-e-border); }
.zone-pill-m { background: var(--zone-m-bg); color: var(--zone-m-color); border: 1px solid var(--zone-m-border); }
.zone-pill-t { background: var(--zone-t-bg); color: var(--zone-t-color); border: 1px solid var(--zone-t-border); }
.zone-pill-i { background: var(--zone-i-bg); color: var(--zone-i-color); border: 1px solid var(--zone-i-border); }
.zone-pill-r { background: var(--zone-r-bg); color: var(--zone-r-color); border: 1px solid var(--zone-r-border); }

.zone-code-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.zone-pace-highlight {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.15;
  margin-bottom: 0.25rem;
}

.zone-pace-highlight small {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: normal;
}

.zone-percent-badge {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.zone-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0 0 1rem 0;
  flex-grow: 1;
}

.zone-series-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}

.series-tag {
  font-size: 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  color: var(--text-dim);
}

/* Calculadora de Pista */
.track-series-calculator {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
}

.track-calc-title {
  font-size: 1.1rem;
  margin: 0 0 0.2rem 0;
}

.track-calc-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0 0 1rem 0;
}

/* Preguntas Frecuentes / Acordeón */
.faq-accordion-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.faq-section-title {
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item[open] {
  border-color: var(--border-hover);
}

.faq-question {
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--text-dim);
  font-weight: 300;
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.faq-answer p {
  margin: 0 0 0.75rem 0;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* Modales Canónicos */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

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

.modal-lg {
  max-width: 760px;
}

.modal-sm {
  max-width: 440px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title-box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--accent-primary);
}

.modal-title {
  font-size: 1.15rem;
  margin: 0;
  color: var(--text-main);
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s, background 0.15s;
}

.btn-close-modal:hover {
  color: var(--text-main);
  background: var(--bg-card-subtle);
}

.modal-body {
  padding: 1.5rem;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0;
  margin-bottom: 1.25rem;
}

.modal-footer-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.btn-print-action,
.btn-primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent-primary);
  color: #ffffff;
  border: none;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

.btn-print-action:hover,
.btn-primary-action:hover {
  background: var(--accent-primary-hover);
}

.btn-copy-clipboard {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

.btn-copy-clipboard:hover {
  background: var(--border-color);
}

.modal-actions-right {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* Ficha Imprimible A4 */
.printable-sheet {
  background: #ffffff;
  color: #0f172a;
  border: 2px solid #cbd5e1;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  font-family: var(--font-main);
}

.sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #0f172a;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.sheet-brand .sheet-logo-text {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: #2563eb;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sheet-brand .sheet-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
}

.sheet-vdot-badge {
  text-align: right;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
}

.sheet-vdot-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #1d4ed8;
}

.sheet-vdot-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: #1d4ed8;
  line-height: 1;
}

.sheet-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #475569;
  margin-bottom: 1rem;
  background: #f8fafc;
  padding: 0.45rem 0.75rem;
  border-radius: 4px;
}

.sheet-zones-summary {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 600px) {
  .sheet-zones-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.sheet-zone-box {
  border: 1px solid #e2e8f0;
  padding: 0.5rem;
  border-radius: 6px;
  background: #ffffff;
  text-align: center;
}

.sheet-zone-code {
  font-size: 0.75rem;
  font-weight: 800;
  display: block;
  margin-bottom: 0.15rem;
}

.sheet-zone-pace {
  font-size: 1.1rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.sheet-splits-table-box table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.sheet-splits-table-box th {
  background: #f1f5f9;
  color: #334155;
  border: 1px solid #cbd5e1;
  padding: 0.4rem 0.5rem;
  text-align: center;
  font-weight: 700;
}

.sheet-splits-table-box td {
  border: 1px solid #cbd5e1;
  padding: 0.4rem 0.5rem;
  text-align: center;
  font-family: var(--font-mono);
}

.sheet-footer-rules {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  border-top: 1px dashed #cbd5e1;
  padding-top: 0.75rem;
  font-size: 0.7rem;
  color: #64748b;
  line-height: 1.35;
}

@media (max-width: 600px) {
  .sheet-footer-rules {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Reglas de Impresión */
@media print {
  body * {
    visibility: hidden;
  }
  .modal-backdrop,
  .printable-sheet,
  .printable-sheet * {
    visibility: visible;
  }
  .modal-backdrop {
    position: absolute;
    inset: 0;
    background: transparent;
    padding: 0;
  }
  .modal-dialog {
    border: none;
    box-shadow: none;
    max-width: 100%;
    margin: 0;
  }
  .modal-header,
  .modal-footer-actions,
  .modal-desc {
    display: none !important;
  }
  .printable-sheet {
    border: none;
    padding: 0;
  }
}