/* ==========================================================================
   Calculadora de farmacocinética de cafeína y hora límite de café
   Estilos canónicos modernos Vanilla CSS (Dark & Light theme)
   ========================================================================== */

:root {
  /* Paleta base en tema oscuro */
  --bg-page: #0b0f19;
  --bg-card: #131b2c;
  --bg-card-subtle: #19243b;
  --bg-card-hover: #1e2c47;
  --border-color: #233352;
  --border-focus: #3b82f6;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Acentos cromáticos temáticos */
  --caffeine-gold: #f59e0b;
  --caffeine-amber: #d97706;
  --caffeine-deep: #78350f;
  --caffeine-glow: rgba(245, 158, 11, 0.22);

  --sleep-emerald: #10b981;
  --sleep-emerald-bg: rgba(16, 185, 129, 0.12);
  --sleep-emerald-border: rgba(16, 185, 129, 0.35);

  --alert-red: #ef4444;
  --alert-red-bg: rgba(239, 68, 68, 0.12);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.45);

  --transition-fast: 0.18s ease;
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modo claro adaptativo */
[data-theme="light"] {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-card-hover: #e2e8f0;
  --border-color: #cbd5e1;
  --border-focus: #2563eb;

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

  --caffeine-gold: #d97706;
  --caffeine-amber: #b45309;
  --caffeine-glow: rgba(217, 119, 6, 0.15);

  --sleep-emerald: #059669;
  --sleep-emerald-bg: rgba(5, 150, 105, 0.1);
  --sleep-emerald-border: rgba(5, 150, 105, 0.3);

  --alert-red: #dc2626;
  --alert-red-bg: rgba(220, 38, 38, 0.08);

  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
}

/* Reset y estructura canónica de contención */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  margin-top: 0;
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

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

.tool-with-sidebar {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  width: 100%;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   Tarjeta Intro y Badges
   -------------------------------------------------------------------------- */
.card-intro {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.intro-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--caffeine-gold);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  margin-bottom: 0.75rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--caffeine-gold);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--caffeine-gold);
  animation: pulse-kf 2s infinite ease-in-out;
}

@keyframes pulse-kf {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

.intro-text {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Secciones y Encabezados
   -------------------------------------------------------------------------- */
.card-section {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-header {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.section-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--caffeine-gold);
}

.section-title {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
  color: var(--text-main);
}

.section-desc {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   1. Perfil Metabólico (Grid responsivo sin scrollbars - Lección 210)
   -------------------------------------------------------------------------- */
.metabolism-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.875rem;
  width: 100%;
}

.profile-card {
  background-color: var(--bg-card-subtle);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 100px;
}

.profile-card:hover {
  background-color: var(--bg-card-hover);
  border-color: rgba(245, 158, 11, 0.4);
  transform: translateY(-2px);
}

.profile-card.is-active {
  background-color: rgba(245, 158, 11, 0.08);
  border-color: var(--caffeine-gold);
  box-shadow: 0 0 14px var(--caffeine-glow);
}

.profile-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.profile-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-main);
}

.profile-hl-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--caffeine-gold);
}

.profile-caption {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.metabolism-fine-tune {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.field-label-small {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.35rem;
}

.slider-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--caffeine-gold);
}

.custom-range {
  width: 100%;
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.custom-range::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--caffeine-gold);
  border: 3px solid var(--bg-card);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.custom-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.extra-params-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   Controles de formulario, Selects e Inputs Flexbox (Reglas 5 y 10)
   -------------------------------------------------------------------------- */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-control {
  width: 100%;
  min-height: 42px;
  height: 42px;
  padding: 0 0.875rem;
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--caffeine-gold);
  box-shadow: 0 0 0 3px var(--caffeine-glow);
}

/* Desplegables <select> conforme a Lección 208 */
.form-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 42px;
  height: 42px;
  padding: 0 40px 0 0.875rem;
  background-color: #0d1424;
  color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
  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='%23f59e0b' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 12px) center;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-select option {
  background-color: #131b2c;
  color: #f8fafc;
  padding: 10px;
}

[data-theme="light"] .form-select {
  background-color: #ffffff;
  color: #0f172a;
  border-color: var(--border-color);
  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='%23d97706' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

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

/* Wrapper flexbox con sufijo */
.input-with-suffix {
  display: flex;
  align-items: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  height: 42px;
  min-height: 42px;
  transition: border-color var(--transition-fast);
}

.input-with-suffix:focus-within {
  border-color: var(--caffeine-gold);
  box-shadow: 0 0 0 3px var(--caffeine-glow);
}

.input-with-suffix .form-control {
  flex: 1 1 0%;
  width: 0;
  min-width: 0;
  border: none;
  box-shadow: none;
  padding: 0 0.75rem;
}

.input-with-suffix .suffix {
  padding: 0 0.875rem;
  background: var(--bg-card-subtle);
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 600;
  height: 100%;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   2. Selector de Bebidas Visual
   -------------------------------------------------------------------------- */
.beverage-selector-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  width: 100%;
}

.beverage-card-btn {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-smooth);
  text-align: left;
  min-height: 52px;
}

.beverage-card-btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(245, 158, 11, 0.4);
  transform: translateY(-2px);
}

.beverage-card-btn:active {
  transform: translateY(0);
}

.bev-icon-box {
  width: 38px;
  height: 38px;
  min-width: 38px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--caffeine-gold);
}

.bev-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1 1 0%;
  min-width: 0;
}

.bev-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bev-dose-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--caffeine-gold);
}

/* Formulario horizontal para añadir toma */
.add-intake-bar {
  display: grid;
  grid-template-columns: 140px 1fr 140px 160px;
  gap: 0.75rem;
  align-items: flex-end;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 42px;
  height: 42px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 6px 16px rgba(217, 119, 6, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Presets rápidos */
.presets-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.25rem 0;
}

.presets-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

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

.btn-preset {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.8125rem;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.btn-preset-danger {
  color: var(--alert-red);
}

.btn-preset-danger:hover {
  background: var(--alert-red-bg);
  border-color: var(--alert-red);
}

/* Lista interactiva de tomas */
.intakes-list-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.intakes-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid var(--border-color);
}

.intakes-count-badge {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.intakes-total-dose {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--caffeine-gold);
}

.intakes-items-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 280px;
  overflow-y: auto;
}

.intake-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}

.intake-item:last-child {
  border-bottom: none;
}

.intake-item:hover {
  background: var(--bg-card-hover);
}

.intake-item-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.intake-time-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--caffeine-gold);
  background: var(--bg-card);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.intake-item-details {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.intake-item-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.intake-item-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.intake-item-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.intake-item-mg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
}

.btn-remove-intake {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-remove-intake:hover {
  color: var(--alert-red);
  background: var(--alert-red-bg);
}

.empty-intakes-msg {
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin: 0;
}

/* --------------------------------------------------------------------------
   3. Telemetría y Tarjetas KPI
   -------------------------------------------------------------------------- */
.card-telemetry {
  width: 100%;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  width: 100%;
}

.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-smooth);
}

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

.kpi-card-highlight {
  border-color: rgba(16, 185, 129, 0.4);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(16, 185, 129, 0.05) 100%);
}

.kpi-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kpi-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.kpi-status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--sleep-emerald);
  box-shadow: 0 0 8px var(--sleep-emerald);
}

.kpi-status-indicator.is-alert {
  background-color: var(--alert-red);
  box-shadow: 0 0 8px var(--alert-red);
}

.kpi-status-indicator.is-mod {
  background-color: var(--caffeine-gold);
  box-shadow: 0 0 8px var(--caffeine-gold);
}

.kpi-tag-sleep {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--sleep-emerald-bg);
  border: 1px solid var(--sleep-emerald-border);
  color: var(--sleep-emerald);
}

.kpi-icon-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--bg-card-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.kpi-main-val {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.kpi-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

.kpi-unit {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
}

.kpi-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* --------------------------------------------------------------------------
   4. Canvas Interactivo 2D
   -------------------------------------------------------------------------- */
.card-chart {
  padding: 1.5rem;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-caffeine {
  background-color: var(--caffeine-gold);
}

.dot-threshold {
  background-color: var(--sleep-emerald);
}

.dot-now {
  background-color: #3b82f6;
}

.canvas-container {
  position: relative;
  width: 100%;
  height: clamp(280px, 40vh, 380px);
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  touch-action: pan-y;
}

#caffeine-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Tooltip interactivo flotante */
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  z-index: 10;
  background: rgba(19, 27, 44, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  box-shadow: var(--shadow-md);
  transform: translate(-50%, -120%);
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

[data-theme="light"] .chart-tooltip {
  background: rgba(255, 255, 255, 0.95);
}

.tooltip-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tooltip-mg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--caffeine-gold);
  margin: 0.15rem 0;
}

.tooltip-status {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--sleep-emerald);
}

/* Franja de diagnóstico neurobiológico */
.neuro-diagnosis-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-top: 0.5rem;
}

.diagnosis-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: var(--sleep-emerald-bg);
  border: 1px solid var(--sleep-emerald-border);
  color: var(--sleep-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagnosis-icon.is-alert {
  background: var(--alert-red-bg);
  border-color: rgba(239, 68, 68, 0.35);
  color: var(--alert-red);
}

.diagnosis-content {
  flex: 1 1 0%;
  min-width: 0;
}

.diagnosis-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.diagnosis-p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.diagnosis-stats {
  display: flex;
  gap: 1.25rem;
}

.diag-metric {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.diag-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--caffeine-gold);
}

.diag-lbl {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   5. Guía clínica y SEO Guide canónica
   -------------------------------------------------------------------------- */
.guide-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.guide-list {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.guide-list li {
  margin-bottom: 0.4rem;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.guide-table th {
  background: var(--bg-card-subtle);
  padding: 0.875rem 1rem;
  color: var(--text-main);
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

.guide-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
}

.guide-table tr:last-child td {
  border-bottom: none;
}

.guide-table tr:hover td {
  background: rgba(245, 158, 11, 0.04);
}

/* Acordeón FAQ */
.faq-accordion-section {
  margin-top: 2rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: rgba(245, 158, 11, 0.4);
}

.faq-question {
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-question::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--caffeine-gold);
  font-weight: 700;
}

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

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.faq-answer p {
  margin: 0;
}

/* --------------------------------------------------------------------------
   Modal Canónico de Confirmación
   -------------------------------------------------------------------------- */
.custom-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
}

.modal-dialog {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 440px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: modal-pop 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modal-pop {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

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

.modal-icon-alert {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--alert-red-bg);
  color: var(--alert-red);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-title {
  font-size: 1.125rem;
  margin: 0;
}

.modal-body p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.btn-modal-cancel {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

.btn-modal-confirm {
  background: var(--alert-red);
  border: none;
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

/* --------------------------------------------------------------------------
   Adaptación Responsiva Móvil y Tablet
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .telemetry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .add-intake-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .add-intake-bar .intake-field-btn {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .metabolism-grid {
    grid-template-columns: 1fr;
  }

  .beverage-selector-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .extra-params-grid {
    grid-template-columns: 1fr;
  }

  .guide-grid-2col {
    grid-template-columns: 1fr;
  }

  .neuro-diagnosis-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .diagnosis-stats {
    width: 100%;
    justify-content: space-between;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
  }

  .diag-metric {
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .beverage-selector-grid {
    grid-template-columns: 1fr;
  }

  .add-intake-bar {
    grid-template-columns: 1fr;
  }

  .add-intake-bar .intake-field-btn {
    grid-column: span 1;
  }

  .telemetry-grid {
    grid-template-columns: 1fr;
  }

  .kpi-number {
    font-size: 1.6rem;
  }

  .chart-legend {
    font-size: 0.75rem;
    gap: 0.75rem;
  }
}