/* ============================================================
   IPC Colombia · Estilo basado en Apple Human Interface Guidelines
   - Tipografía del sistema (San Francisco en Apple)
   - Espaciado generoso, profundidad sutil, claridad
   ============================================================ */

:root {
  /* Paleta estilo sistema Apple */
  --blue: #0071e3;
  --blue-dark: #0077ed;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --line: #d2d2d7;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --card: #ffffff;
  --green: #34c759;
  --red: #ff3b30;
  --orange: #ff9500;

  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

  --maxw: 1040px;
  --ease: cubic-bezier(0.28, 0.11, 0.32, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.47;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

/* ---------- NAVBAR ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__brand {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav__links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav__links a {
  font-size: 0.86rem;
  color: var(--ink);
  text-decoration: none;
  opacity: 0.85;
  transition: opacity 0.2s var(--ease);
}
.nav__links a:hover { opacity: 1; color: var(--blue); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 22px 48px;
  text-align: center;
}
.hero__intro { max-width: 640px; margin: 0 auto; }
.hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.hero__subtitle {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--ink-soft);
  font-weight: 400;
  margin: 0;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.15s var(--ease), background 0.2s var(--ease);
}
.btn:active { transform: scale(0.97); }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-dark); }
.btn--ghost { background: transparent; color: var(--blue); }
.btn--ghost:hover { background: rgba(0, 113, 227, 0.08); }

/* ---------- SECTIONS ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 88px 22px;
}
.section--alt {
  max-width: none;
  background: var(--bg-alt);
}
.section--alt > * {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}
.section__head { text-align: center; margin-bottom: 54px; }
.section__title {
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.section__lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 54ch;
  margin: 0 auto;
}

/* ---------- GRID / FEATURES ---------- */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature__icon { font-size: 2.4rem; margin-bottom: 16px; }
.feature h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 10px; letter-spacing: -0.02em; }
.feature p { color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- STEPS ---------- */
.steps { list-style: none; max-width: 720px; margin: 0 auto 48px; display: flex; flex-direction: column; gap: 20px; }
.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow-sm);
}
.step__num {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.1rem;
}
.step h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 6px; letter-spacing: -0.02em; }
.step p { color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- FORMULA ---------- */
.formula-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}
.formula-card__title { font-size: 1.3rem; font-weight: 600; margin-bottom: 24px; }
.formula {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 500;
  flex-wrap: wrap;
  justify-content: center;
}
.formula__frac {
  display: inline-flex;
  flex-direction: column;
  text-align: center;
}
.formula__frac span:first-child { border-bottom: 2px solid var(--ink); padding: 0 10px 4px; }
.formula__frac span:last-child { padding: 4px 10px 0; }
.formula-card__note { margin-top: 24px; color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- CHARTS ---------- */
.chart-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 32px;
}
.chart-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 14px;
}
.chart-card__head h3 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; }
.chart-wrap { position: relative; height: 380px; }

/* segmented control estilo iOS */
.segmented {
  display: inline-flex;
  background: var(--bg-alt);
  border-radius: 980px;
  padding: 3px;
}
.segmented__btn {
  border: none;
  background: transparent;
  padding: 7px 18px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.segmented__btn.is-active { background: #fff; box-shadow: var(--shadow-sm); }

/* ---------- TABLES ---------- */
.table-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  padding: 14px 24px;
  text-align: left;
  font-size: 0.98rem;
}
.data-table thead th {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.data-table tbody tr { border-top: 1px solid var(--line); transition: background 0.15s var(--ease); }
.data-table tbody tr:hover { background: var(--bg-alt); }
.data-table td:nth-child(2) { font-weight: 600; font-variant-numeric: tabular-nums; }
.trend { font-size: 0.85rem; font-weight: 600; }
.trend--up { color: var(--red); }
.trend--down { color: var(--green); }

/* ---------- INFO BANNER ---------- */
.info-banner {
  background: rgba(0, 113, 227, 0.08);
  border: 1px solid rgba(0, 113, 227, 0.2);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 32px;
  font-size: 1rem;
  color: var(--ink);
}
.info-banner strong { display: block; margin-bottom: 6px; }
.info-banner--soft {
  background: var(--bg-alt);
  border-color: var(--line);
  color: var(--ink-soft);
  text-align: center;
  margin-top: 32px;
  margin-bottom: 0;
}

/* ---------- COMPARE CARDS ---------- */
.compare-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
}
.compare-card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 12px; letter-spacing: -0.02em; }
.compare-card p { color: var(--ink-soft); margin-bottom: 12px; }
.compare-card__legal {
  font-size: 0.9rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 0;
}

/* ---------- CALCULATOR ---------- */
.calc-section { padding-top: 0; margin-top: -32px; }
.calc-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  margin: 0 auto;
}

.calc-form { display: flex; flex-direction: column; gap: 32px; }

.calc-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.calc-step__num {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, #0077ed 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(0, 113, 227, 0.3);
}
.calc-step__body { flex: 1; }

.calc-label {
  display: block;
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.calc-hint {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-bottom: 14px;
  line-height: 1.4;
}
.calc-meses {
  margin-top: 12px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.08) 0%, rgba(0, 113, 227, 0.04) 100%);
  border: 1px solid rgba(0, 113, 227, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: 8px;
}
.calc-meses::before {
  content: "📅";
  font-size: 1.1rem;
}

/* Inputs */
.calc-form input[type="text"],
.calc-form input[type="number"],
.calc-form input[type="date"],
.calc-form input[type="month"],
.calc-form select {
  width: 100%;
  padding: 16px 18px;
  font-size: 1.05rem;
  font-family: inherit;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.calc-form input:focus,
.calc-form select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

/* Select con flecha custom */
.calc-form select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236e6e73' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 3.5-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
  cursor: pointer;
}

/* Date/month inputs con icono */
.calc-form input[type="date"],
.calc-form input[type="month"] {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='%236e6e73' viewBox='0 0 24 24'%3E%3Cpath d='M19 4h-1V2h-2v2H8V2H6v2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 16H5V10h14v10zm0-12H5V6h14v2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 48px;
}
.calc-form input[type="date"]::-webkit-calendar-picker-indicator,
.calc-form input[type="month"]::-webkit-calendar-picker-indicator {
  opacity: 0;
  width: 100%;
  height: 100%;
  position: absolute;
  right: 0;
  cursor: pointer;
}
.calc-form input[type="date"],
.calc-form input[type="month"] {
  position: relative;
}

.input-money input {
  font-variant-numeric: tabular-nums;
}

/* Radio cards mejoradas */
.radio-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.radio-card {
  cursor: pointer;
  display: block;
}
.radio-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.radio-card__box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  border: 2px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: all 0.2s var(--ease);
}
.radio-card__box strong { 
  font-size: 1.05rem; 
  letter-spacing: -0.01em;
}
.radio-card__box small { 
  color: var(--ink-soft); 
  font-size: 0.88rem;
  line-height: 1.35;
}
.radio-card:hover .radio-card__box {
  border-color: var(--ink-soft);
  background: var(--bg-alt);
}
.radio-card input:checked + .radio-card__box {
  border-color: var(--blue);
  background: rgba(0, 113, 227, 0.06);
  box-shadow: 0 0 0 1px var(--blue);
}
.radio-card input:checked + .radio-card__box strong {
  color: var(--blue);
}
.radio-card input:focus + .radio-card__box {
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

/* Buttons */
.btn--block { 
  width: 100%; 
  margin-top: 16px;
  padding: 16px 24px;
  font-size: 1.1rem;
  font-weight: 600;
}

/* ---------- RESULT ---------- */
.result {
  padding: 32px 0 0;
}

/* Documento de liquidación */
.doc-header {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 28px;
}
.doc-header__title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.doc-header__date {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.doc-section {
  margin-bottom: 28px;
}
.doc-section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

/* Tabla de parámetros */
.doc-params {
  width: 100%;
}
.doc-params td {
  padding: 10px 0;
  font-size: 0.98rem;
  border-bottom: 1px solid var(--line);
}
.doc-params td:first-child {
  color: var(--ink-soft);
  width: 60%;
}
.doc-params td:last-child {
  font-weight: 600;
  text-align: right;
}

/* Resumen de deuda */
.doc-summary__grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.doc-summary__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}
.doc-summary__label {
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.doc-summary__value {
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.doc-summary__item--total {
  background: var(--blue);
  color: #fff;
}
.doc-summary__item--total .doc-summary__label {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}
.doc-summary__item--total .doc-summary__value {
  font-size: 1.4rem;
  font-weight: 700;
}

/* Tabla del documento */
.doc-table tfoot td {
  padding: 14px 24px;
  background: var(--bg-alt);
  font-size: 1rem;
}
.doc-table tfoot td:last-child {
  font-variant-numeric: tabular-nums;
}

/* Nota legal */
.doc-legal {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.doc-legal p { margin-bottom: 10px; }
.doc-legal ul {
  margin: 0 0 14px 20px;
  padding: 0;
}
.doc-legal li { margin-bottom: 4px; }
.doc-legal__disclaimer {
  font-style: italic;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  margin-bottom: 0;
}

.result__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- TABS ---------- */
.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}
.tabs__btn {
  padding: 10px 22px;
  border: none;
  background: var(--bg-alt);
  border-radius: 980px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.tabs__btn.is-active {
  background: var(--blue);
  color: #fff;
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* ---------- LEGAL CARDS ---------- */
.legal-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
}
.legal-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.legal-card p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ---------- FORMULA GRID ---------- */
.formula-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  text-align: left;
  margin-top: 20px;
}
.formula-item {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
}
.formula-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
}
.formula-item code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88rem;
  color: var(--ink);
}

/* ---------- FOOTER ---------- */
.footer {
  text-align: center;
  padding: 48px 22px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.footer__muted { margin-top: 8px; opacity: 0.7; }

/* Espacio para tab bar en móvil */
@media (max-width: 820px) {
  .footer { padding-bottom: 100px; }
}

/* ---------- TAB BAR (navegación inferior estilo app) ---------- */
.tab-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.tab-bar__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 10px 4px 8px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 500;
  transition: color 0.2s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.tab-bar__icon {
  width: 24px;
  height: 24px;
  stroke-width: 1.8;
  transition: transform 0.2s var(--ease);
}

.tab-bar__item.is-active {
  color: var(--blue);
}

.tab-bar__item.is-active .tab-bar__icon {
  transform: scale(1.1);
}

.tab-bar__item:active {
  opacity: 0.7;
}

/* Solo mostrar en móvil */
@media (max-width: 820px) {
  .tab-bar {
    display: flex;
  }
  
  /* Ocultar nav superior en móvil y mostrar solo el brand */
  .nav__links {
    display: none !important;
  }
  .nav__toggle {
    display: none !important;
  }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 820px) {
  .nav__links {
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    transition: transform 0.35s var(--ease);
    max-height: calc(100vh - 52px);
    overflow-y: auto;
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links li { padding: 0 22px; }
  .nav__links a { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav__links li:last-child a { border-bottom: none; }
  .nav__toggle { display: flex; }

  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .chart-wrap { height: 300px; }
  .section { padding: 64px 22px; }
  .formula-card { padding: 28px 22px; }
  .formula-grid { grid-template-columns: 1fr; }

  .calc-card { padding: 28px 22px; }
  .calc-step { flex-direction: column; gap: 12px; }
  .calc-step__num { margin-bottom: 0; }
  .radio-group { grid-template-columns: 1fr; }
  .result__total { font-size: 2.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- PRINT STYLES ---------- */
@media print {
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
  
  body {
    background: #fff;
    font-size: 11pt;
    line-height: 1.4;
  }
  
  /* Ocultar elementos no imprimibles */
  .nav,
  .tab-bar,
  .hero,
  .calc-form,
  .no-print,
  .result__actions,
  #como-funciona,
  #datos,
  #legal,
  .footer {
    display: none !important;
  }
  
  /* Mostrar solo el resultado */
  .calc-section {
    padding: 0;
    margin: 0;
  }
  
  .calc-card {
    box-shadow: none;
    border: none;
    padding: 0;
    max-width: 100%;
  }
  
  .result {
    display: block !important;
    padding: 0;
  }
  
  /* Encabezado del documento */
  .doc-header {
    padding-bottom: 16px;
    margin-bottom: 20px;
  }
  .doc-header__title {
    font-size: 16pt;
  }
  
  /* Secciones */
  .doc-section {
    margin-bottom: 20px;
    page-break-inside: avoid;
  }
  .doc-section__title {
    font-size: 10pt;
    margin-bottom: 10px;
  }
  
  /* Parámetros */
  .doc-params td {
    padding: 6px 0;
    font-size: 10pt;
  }
  
  /* Resumen */
  .doc-summary__item {
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #f9f9f9 !important;
  }
  .doc-summary__item--total {
    background: #0071e3 !important;
    color: #fff !important;
  }
  .doc-summary__item--total .doc-summary__label {
    color: #fff !important;
  }
  
  /* Tabla */
  .table-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  .data-table th,
  .data-table td {
    padding: 8px 12px;
    font-size: 9pt;
  }
  .data-table thead th {
    background: #f5f5f5 !important;
  }
  .doc-table tfoot td {
    background: #f5f5f5 !important;
  }
  
  /* Nota legal */
  .doc-legal {
    background: #f9f9f9 !important;
    padding: 14px 18px;
    font-size: 8pt;
    page-break-inside: avoid;
  }
  
  /* Evitar cortes de página en medio de secciones */
  .doc-summary,
  .table-card {
    page-break-inside: avoid;
  }
}


/* ============================================================
   ESTILOS ADICIONALES: Tabla auditable, pagos, metodología
   ============================================================ */

/* ---------- TABLA AUDITABLE ---------- */
.table-card--audit {
  overflow-x: auto;
}

.audit-table {
  min-width: 800px;
}

.audit-table th,
.audit-table td {
  padding: 12px 14px;
  font-size: 0.88rem;
  text-align: right;
  white-space: nowrap;
}

.audit-table th:first-child,
.audit-table td:first-child {
  text-align: center;
  width: 40px;
}

.audit-table th:nth-child(2),
.audit-table td:nth-child(2) {
  text-align: left;
}

.audit-table thead th {
  font-size: 0.75rem;
  padding: 10px 14px;
}

.audit-num {
  text-align: center !important;
  color: var(--ink-soft);
}

.audit-money {
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.85rem;
}

.audit-factor {
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.audit-subtotal {
  font-weight: 600;
  color: var(--ink);
}

.audit-totals td {
  font-size: 0.92rem;
  background: var(--bg-alt);
}

/* Scroll indicator para tabla ancha */
.table-card--audit::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 40px;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.9));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.table-card--audit.is-scrollable::after {
  opacity: 1;
}

/* ---------- PAGOS PARCIALES ---------- */
.pagos-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 14px;
}

.pago-item {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  animation: slideIn 0.25s var(--ease);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pago-item__fields {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.pago-item__field {
  flex: 1;
}

.pago-item__field label {
  display: block;
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 6px;
  font-weight: 500;
}

.pago-item__field input {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.pago-item__field input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.btn-remove-pago {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.btn-remove-pago:hover {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.btn--sm {
  padding: 10px 18px;
  font-size: 0.92rem;
  gap: 6px;
}

.btn--ghost svg {
  stroke: currentColor;
}

/* ---------- SECCIÓN DE PAGOS EN RESULTADO ---------- */
.doc-summary__item--pagos {
  background: rgba(255, 149, 0, 0.1);
  border: 1px solid rgba(255, 149, 0, 0.2);
}

.doc-summary__item--pagos .doc-summary__label {
  color: var(--orange);
}

.doc-summary__item--pagos .doc-summary__value {
  color: var(--orange);
}

/* ---------- METODOLOGÍA ---------- */
.doc-metodologia {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.metodologia-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metodologia-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metodologia-item strong {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.metodologia-item code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--bg);
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.metodologia-item small {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

/* ---------- SUBTÍTULO DE SECCIÓN ---------- */
.doc-section__subtitle {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: -8px;
  margin-bottom: 14px;
}

/* ---------- FAQ / AYUDA ---------- */
.help-content {
  max-width: 720px;
  margin: 0 auto;
}

.faq {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}

.faq__item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s var(--ease);
}

.faq__item[open] {
  box-shadow: var(--shadow);
}

.faq__question {
  padding: 18px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background 0.2s var(--ease);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--ink-soft);
  transition: transform 0.25s var(--ease);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__question:hover {
  background: var(--bg-alt);
}

.faq__answer {
  padding: 0 24px 20px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq__answer p {
  margin-bottom: 12px;
}

.faq__answer ul,
.faq__answer ol {
  margin: 0 0 12px 20px;
  padding: 0;
}

.faq__answer li {
  margin-bottom: 6px;
}

.help-contact {
  text-align: center;
  padding: 32px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.help-contact h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.help-contact p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.help-contact a {
  color: var(--blue);
  text-decoration: none;
}

.help-contact a:hover {
  text-decoration: underline;
}

/* ---------- FORMULA GRID MEJORADO ---------- */
.formula-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  text-align: left;
  margin-top: 20px;
}

.formula-item {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
}

.formula-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--ink);
}

.formula-item code {
  display: block;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88rem;
  color: var(--ink);
  background: var(--bg);
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--line);
  margin-bottom: 6px;
}

.formula-item small {
  display: block;
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 6px;
}

/* ---------- RESPONSIVE ADDITIONS ---------- */
@media (max-width: 820px) {
  .pago-item__fields {
    flex-wrap: wrap;
  }
  
  .pago-item__field {
    flex: 1 1 calc(50% - 6px);
    min-width: 120px;
  }
  
  .btn-remove-pago {
    flex: 0 0 38px;
  }
  
  .audit-table {
    min-width: 700px;
  }
  
  .audit-table th,
  .audit-table td {
    padding: 10px 10px;
    font-size: 0.82rem;
  }
}

/* ---------- PRINT ADDITIONS ---------- */
@media print {
  .audit-table {
    min-width: auto;
    font-size: 8pt;
  }
  
  .audit-table th,
  .audit-table td {
    padding: 6px 8px;
    font-size: 8pt;
  }
  
  .doc-metodologia {
    background: #f9f9f9 !important;
    padding: 12px 16px;
    font-size: 9pt;
  }
  
  .metodologia-item code {
    padding: 6px 10px;
    font-size: 8pt;
  }
  
  #seccionPagos {
    page-break-inside: avoid;
  }
  
  #ayuda {
    display: none !important;
  }
}