/* ==========================================================================
   Fijate Tools - Calculadora de Tax Free en España
   ========================================================================== */

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

  --taxfree-gold: #eab308;
  --taxfree-blue: #2563eb;

  --bg-primary: #0b0f17;
  --bg-secondary: #131a26;
  --bg-tertiary: #1b2434;
  --bg-card: #151e2e;
  --bg-card-hover: #1c283d;
  --border-color: #263348;
  --border-focus: #2563eb;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-success: #10b981;
  --accent-success-bg: rgba(16, 185, 129, 0.15);
  --accent-warning: #f59e0b;
  --accent-warning-bg: rgba(245, 158, 11, 0.15);
  --accent-danger: #ef4444;
  --accent-danger-bg: rgba(239, 68, 68, 0.15);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #cbd5e1;
  --border-focus: #1d4ed8;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --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 -1px rgba(0, 0, 0, 0.04);
}

/* Base obligatoria canónica */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  box-sizing: border-box;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  width: 100%;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Tarjetas */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.card-header-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.15);
  color: #3b82f6;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

.card-subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Formulario */
.taxfree-inputs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 600px) {
  .taxfree-inputs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-select,
.form-input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 44px;
  padding: 0 1rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}

.form-select {
  padding-right: 40px;
  appearance: none;
  -webkit-appearance: none;
  -moz-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='%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 14px center;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
}

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

.form-select:focus,
.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

.input-with-unit .form-input {
  padding-right: 48px;
}

.unit-badge {
  position: absolute;
  right: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  pointer-events: none;
}

/* Alerta de elegibilidad */
.eligibility-alert-box {
  margin-top: 1.25rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-md);
  background: var(--accent-success-bg);
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--accent-success);
  font-weight: 600;
}

.eligibility-alert-box.not-eligible {
  background: var(--accent-danger-bg);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--accent-danger);
}

.eligibility-alert-box svg {
  flex-shrink: 0;
}

/* KPIs de resultados */
.results-kpis-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

@media (min-width: 640px) {
  .results-kpis-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.result-kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.result-kpi-card.highlight-kpi {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(16, 185, 129, 0.08));
  border-color: rgba(37, 99, 235, 0.4);
}

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

.kpi-big-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
}

.kpi-number {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.kpi-subtext {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Comparativa */
.comparison-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.comparison-title {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 600px) {
  .comparison-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.comparison-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.comp-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.comp-val {
  font-size: 1.35rem;
  font-weight: 800;
}

.comp-desc {
  margin: 0.3rem 0 0;
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Guía DIVA */
.diva-steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .diva-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.diva-step-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.step-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--taxfree-blue);
  color: #ffffff;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.step-text {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.diva-lights-box {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
}

.light-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
}

.light-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 4px;
}

.dot-green { background-color: var(--accent-success); box-shadow: 0 0 6px var(--accent-success); }
.dot-red { background-color: var(--accent-danger); box-shadow: 0 0 6px var(--accent-danger); }

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

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

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

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

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

.faq-question::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

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

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

.faq-answer p {
  margin: 0;
}