/* ==========================================================================
   Calculadora de aduanas e importación de paquetes - Estilos Oficiales
   Cumplimiento estricto con los estándares de diseño canónicos de fijate.com
   ========================================================================== */

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

  /* Tema claro por defecto */
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;
  
  --accent-gold: #d97706;
  --accent-gold-bg: #fef3c7;
  --accent-gold-border: #fde68a;

  --success: #16a34a;
  --success-bg: #dcfce7;
  --success-border: #bbf7d0;

  --warning: #ea580c;
  --warning-bg: #ffedd5;
  --warning-border: #fed7aa;

  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --danger-border: #fecaca;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius: 12px;
}

[data-theme="dark"] {
  --bg-body: #090d16;
  --bg-card: #131b2e;
  --bg-card-alt: #1a253c;
  --bg-input: #0e1526;
  --border-color: #243452;
  --border-focus: #3b82f6;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: #172554;
  --primary-border: #1e3a8a;

  --accent-gold: #f59e0b;
  --accent-gold-bg: #372305;
  --accent-gold-border: #78350f;

  --success: #22c55e;
  --success-bg: #052e16;
  --success-border: #14532d;

  --warning: #f97316;
  --warning-bg: #431407;
  --warning-border: #7c2d12;

  --danger: #ef4444;
  --danger-bg: #450a0a;
  --danger-border: #7f1d1d;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* Reset y estructura general */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
}

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

.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3.5rem;
  padding: 0 1rem;
  width: 100%;
  flex: 1;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

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

/* Barra de navegación por pestañas */
.nav-tabs-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.35rem;
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  scrollbar-width: none;
}

.nav-tabs-wrapper::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex: 1;
  min-width: 130px;
  min-height: 44px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-card-alt);
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Tarjetas y secciones */
.card-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.section-title {
  font-size: 1.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-pill {
  font-size: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-info {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

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

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

/* Cuadrículas de formulario */
.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.label-hint {
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 400;
}

/* Campos de entrada táctiles con altura mínima 40px */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-suffix {
  position: absolute;
  right: 12px;
  color: var(--text-light);
  font-weight: 600;
  font-size: 0.9rem;
  pointer-events: none;
}

.form-input {
  width: 100%;
  height: 44px;
  min-height: 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0 2.5rem 0 0.85rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Desplegables <select> canónicos */
.form-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 44px;
  min-height: 44px;
  background-color: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0 40px 0 0.85rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  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='%2364748b' 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;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-select option,
.form-select optgroup {
  background-color: var(--bg-card);
  color: var(--text-main);
  padding: 8px 12px;
}

/* Interruptor toggle IOSS */
.toggle-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.toggle-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toggle-title {
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toggle-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #94a3b8;
  transition: .3s;
  border-radius: 28px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Banner de veredicto IOSS */
.ioss-banner {
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

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

.ioss-taxable {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning);
}

.ioss-banner-text h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
  color: inherit;
}

.ioss-banner-text p {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Cascada visual tributaria */
.waterfall-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.waterfall-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--bg-card-alt);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  gap: 0.75rem;
}

.waterfall-row.total-row {
  background: var(--primary-light);
  border: 2px solid var(--primary);
  padding: 1.1rem 1.25rem;
}

.waterfall-concept {
  display: flex;
  flex-direction: column;
}

.concept-title {
  font-weight: 600;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.concept-formula {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.waterfall-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: right;
  white-space: nowrap;
}

.total-row .concept-title {
  font-size: 1.1rem;
  color: var(--primary);
}

.total-row .waterfall-value {
  font-size: 1.45rem;
  color: var(--primary);
}

/* Tarjetas resumen métricas */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.summary-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.summary-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.summary-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Semáforo de riesgo e inspecciones */
.risk-box {
  border-radius: 10px;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card-alt);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.risk-indicators {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.risk-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
}

.risk-tag.red {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.risk-tag.yellow {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

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

.risk-notice {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Comparador de operadores / agencias */
.operators-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  scrollbar-width: thin;
}

.operators-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.operators-table th {
  background: var(--bg-card-alt);
  padding: 0.85rem 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.operators-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
}

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

.operators-table tr.highlighted {
  background: var(--primary-light);
}

.operators-table tr.highlighted td {
  color: var(--text-main);
  font-weight: 600;
}

/* Guía de autodespacho AEAT - Timeline */
.steps-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  padding-left: 2rem;
}

.steps-timeline::before {
  content: "";
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 17px;
  width: 2px;
  background: var(--border-color);
}

.step-item {
  position: relative;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.step-badge {
  position: absolute;
  left: -2rem;
  top: 1.2rem;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 0 0 4px var(--bg-card);
}

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

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Botones de acción */
.btn-primary {
  width: 100%;
  min-height: 44px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  transition: background-color 0.2s, transform 0.1s;
}

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

.btn-primary:active {
  transform: scale(0.99);
}

.btn-secondary {
  width: 100%;
  min-height: 44px;
  background: var(--bg-card-alt);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  transition: all 0.2s;
}

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

/* Modal canónico */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  max-width: 550px;
  width: 100%;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

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

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Acordeón didáctico SEO */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.faq-trigger {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 0.75rem;
}

.faq-content {
  padding: 0 1rem 1rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-content {
  display: block;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-icon {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

/* Responsividad táctil */
@media (max-width: 900px) {
  .tool-with-sidebar {
    flex-direction: column;
  }
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .form-grid-2, .form-grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .tool-layout {
    padding: 0 0.75rem;
    margin: 1rem auto 2.5rem;
  }
  .card-main {
    padding: 1.25rem;
  }
  .summary-grid {
    grid-template-columns: 1fr;
  }
  .waterfall-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
  .waterfall-value {
    text-align: left;
  }
  .steps-timeline {
    padding-left: 1.75rem;
  }
  .step-badge {
    left: -1.75rem;
    width: 26px;
    height: 26px;
    font-size: 0.78rem;
  }
}