/* ==========================================================
   Nexo Contable — Sistema de Diseño
   Refinado · Institucional · SaaS Moderno
   ========================================================== */

/* ----------------------------------------------------------
   1. TOKENS DE DISEÑO (CSS Custom Properties)
   ---------------------------------------------------------- */

:root {
  /* Colores */
  --color-primary:     #1142d4;
  --color-primary-dim: rgba(17, 66, 212, 0.08);
  --color-primary-mid: rgba(17, 66, 212, 0.16);

  --color-surface:     #ffffff;
  --color-bg:          #f5f5f7;
  --color-bg-deep:     #ededf0;

  --color-border:      #e4e4e7;
  --color-border-soft: #f0f0f2;

  --color-text-primary:   #09090b;
  --color-text-secondary: #52525b;
  --color-text-muted:     #a1a1aa;
  --color-text-inverse:   #ffffff;

  --color-danger:  #dc2626;
  --color-success: #16a34a;
  --color-warning: #d97706;

  /* Espaciado */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radios */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.75rem;

  /* Sombras */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:  0 2px 6px rgba(0,0,0,0.05), 0 0 0 1px rgba(0,0,0,0.03);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.09), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.05);
  --shadow-primary: 0 8px 32px rgba(17,66,212,0.22);

  /* Tipografía */
  --font-sans: 'Geist', 'Inter', system-ui, sans-serif;
  --font-mono: 'Geist Mono', 'Fira Code', monospace;

  /* Transiciones */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;
  --duration-slow: 350ms;

  /* Header */
  --header-h: 60px;
}

/* ----------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* Ocultar spinners en inputs numéricos */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
}

/* ----------------------------------------------------------
   3. HEADER
   ---------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--duration-base) var(--ease-out),
    background var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  will-change: transform;
}

/* Estado "scrolled" — aplicado vía JS */
.site-header.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

/* Estado "hidden" — aplicado vía JS al hacer scroll down */
.site-header.header-hidden {
  transform: translateY(-100%);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
}
.header-logo:hover {
  opacity: 0.8;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.logo-mark .material-symbols-outlined {
  font-size: 18px;
}

.logo-text {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

/* Nav desktop */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-deep);
}
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-dim);
  font-weight: 600;
}

/* Separador vertical */
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
  margin: 0 var(--space-2);
  flex-shrink: 0;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.nav-dropdown-trigger:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-deep);
}
.nav-dropdown-trigger.active {
  color: var(--color-primary);
  background: var(--color-primary-dim);
  font-weight: 600;
}

.nav-chevron {
  font-size: 16px;
  transition: transform var(--duration-base) var(--ease-out);
  color: inherit;
  opacity: 0.6;
}
.nav-dropdown:hover .nav-chevron,
.nav-dropdown:focus-within .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    visibility var(--duration-base);
  z-index: 200;
}
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}
.nav-dropdown-item:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}
.nav-dropdown-item.active {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  font-weight: 600;
}
.nav-dropdown-item.disabled {
  color: var(--color-text-muted);
  cursor: default;
  pointer-events: none;
}

.item-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--duration-fast);
}
.item-icon .material-symbols-outlined {
  font-size: 16px;
}
.nav-dropdown-item:hover .item-icon {
  background: var(--color-border-soft);
}
.nav-dropdown-item.active .item-icon {
  background: var(--color-primary-dim);
}

.dropdown-item-content {
  flex: 1;
  min-width: 0;
}
.dropdown-item-title {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.3;
  color: inherit;
}
.dropdown-item-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 1px;
  font-weight: 400;
}

.item-badge {
  flex-shrink: 0;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #fef9c3;
  color: #854d0e;
  padding: 2px 6px;
  border-radius: 99px;
}

/* Botón CTA en header */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}
.header-cta:hover {
  background: #0d36b0;
  box-shadow: 0 4px 14px rgba(17,66,212,0.3);
  transform: translateY(-1px);
}

/* ----------------------------------------------------------
   4. MOBILE NAV
   ---------------------------------------------------------- */

.btn-menu-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background var(--duration-fast) var(--ease-out);
}
.btn-menu-hamburger:hover {
  background: var(--color-bg-deep);
}

#mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: 99;
  overflow-y: auto;
  padding: var(--space-4) var(--space-4) var(--space-8);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}
#mobile-menu.open {
  display: block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-section-label {
  display: block;
  padding: var(--space-4) var(--space-3) var(--space-2);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
#mobile-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}
#mobile-menu a:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}
#mobile-menu a.active {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  font-weight: 600;
}

/* ----------------------------------------------------------
   5. LAYOUT & CONTENEDORES
   ---------------------------------------------------------- */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.page-main {
  padding: var(--space-10) 0 var(--space-20);
}

/* ----------------------------------------------------------
   6. CARDS / SECCIONES
   ---------------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-soft);
  background: var(--color-bg);
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}
.card-title .material-symbols-outlined {
  font-size: 18px;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  padding: var(--space-2);
  border-radius: var(--radius-md);
}

.card-body {
  padding: var(--space-6);
}

/* ----------------------------------------------------------
   7. FORM ELEMENTS
   ---------------------------------------------------------- */

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.form-input {
  width: 100%;
  padding: 0.625rem var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}
.form-input::placeholder {
  color: var(--color-text-muted);
}
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17,66,212,0.10);
}

.input-prefix {
  position: relative;
}
.input-prefix::before {
  content: attr(data-prefix);
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  pointer-events: none;
  font-weight: 500;
}
.input-prefix .form-input {
  padding-left: var(--space-6);
}

.form-select {
  width: 100%;
  padding: 0.625rem var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 7L11 1' stroke='%23a1a1aa' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
  cursor: pointer;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17,66,212,0.10);
}

/* Segmented control (toggle pills) */
.segmented {
  display: flex;
  background: var(--color-bg-deep);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
}
.segmented label {
  flex: 1;
  cursor: pointer;
}
.segmented input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.segmented-option {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.4375rem var(--space-3);
  border-radius: calc(var(--radius-md) - 2px);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition:
    background var(--duration-base) var(--ease-out),
    color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  white-space: nowrap;
  text-align: center;
}
.segmented input:checked + .segmented-option {
  background: var(--color-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-xs);
  font-weight: 600;
}

/* Toggle switch */
.toggle-wrapper {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  gap: var(--space-3);
}
.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-track {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--color-border);
  border-radius: 99px;
  transition: background var(--duration-base) var(--ease-out);
  flex-shrink: 0;
}
.toggle-track::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 99px;
  top: 3px;
  left: 3px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration-base) var(--ease-out);
}
.toggle-input:checked + .toggle-track {
  background: var(--color-primary);
}
.toggle-input:checked + .toggle-track::after {
  transform: translateX(16px);
}
.toggle-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* Checkbox personalizado */
.check-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}
.check-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}
.check-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}
.check-item-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* ----------------------------------------------------------
   8. BOTONES
   ---------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem var(--space-5);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: #0d36b0;
  box-shadow: 0 4px 16px rgba(17,66,212,0.28);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: scale(0.98) translateY(0);
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: none;
}
.btn-ghost:hover {
  background: var(--color-primary-dim);
}

.btn-sm {
  padding: 0.375rem var(--space-3);
  font-size: 0.8125rem;
  gap: var(--space-1);
}
.btn-sm .material-symbols-outlined {
  font-size: 15px;
}

.btn-lg {
  padding: 0.875rem var(--space-6);
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

/* ----------------------------------------------------------
   9. PANEL DE RESULTADOS (sidebar sticky)
   ---------------------------------------------------------- */

.results-panel {
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.results-hero {
  background: linear-gradient(140deg, #0d36b0 0%, var(--color-primary) 50%, #2563eb 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-primary);
}
.results-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 100% 0%, rgba(255,255,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 0% 100%, rgba(0,0,0,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.results-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-2);
}
.results-value {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.results-currency {
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.6;
  margin-left: var(--space-1);
}
.results-divider {
  height: 1px;
  background: rgba(255,255,255,0.15);
  margin: var(--space-5) 0;
}
.results-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
}
.results-row-label {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.65);
  font-weight: 400;
}
.results-row-value {
  font-size: 0.9375rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #fff;
}
.results-row-value.is-danger {
  color: #fca5a5;
}
.results-row-value.is-success {
  color: #86efac;
}

/* Botón calcular dentro del panel */
.btn-calcular {
  width: 100%;
  margin-top: var(--space-5);
  padding: 0.875rem;
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.btn-calcular:hover {
  background: rgba(255,255,255,0.25);
  transform: translateY(-1px);
}
.btn-calcular:active {
  transform: scale(0.98);
}

/* Tarjeta de info fiscal */
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-xs);
}
.info-card-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}
.info-card-title .material-symbols-outlined {
  font-size: 16px;
  color: var(--color-primary);
}
.info-card-text {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----------------------------------------------------------
   10. TABLAS DE PRESTACIONES (dinámicas por script.js)
   ---------------------------------------------------------- */

.prestaciones-table {
  width: 100%;
  border-collapse: collapse;
}
.prestaciones-table thead th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border-soft);
}

#tabla_prestaciones tr td,
#tabla_prestaciones_sdi tr td {
  padding: var(--space-3) var(--space-4);
  vertical-align: middle;
}

#tabla_prestaciones tr + tr td,
#tabla_prestaciones_sdi tr + tr td {
  border-top: 1px solid var(--color-border-soft);
}

/* Selector de concepto */
#tabla_prestaciones .concepto,
#tabla_prestaciones_sdi .concepto {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.4375rem var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-surface);
  outline: none;
  cursor: pointer;
  min-width: 180px;
  transition: border-color var(--duration-fast) var(--ease-out);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 7L11 1' stroke='%23a1a1aa' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}
#tabla_prestaciones .concepto:focus,
#tabla_prestaciones_sdi .concepto:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17,66,212,0.10);
}

/* Input de cantidad */
#tabla_prestaciones .cantidad,
#tabla_prestaciones_sdi .cantidad {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.4375rem var(--space-3);
  font-size: 0.875rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-text-primary);
  width: 100px;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}
#tabla_prestaciones .cantidad:focus,
#tabla_prestaciones_sdi .cantidad:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17,66,212,0.10);
}

/* Input días de vacaciones (prima vacacional) */
#tabla_prestaciones .dias_vacaciones_prima {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
  width: 60px;
  outline: none;
}

/* Botón eliminar */
#tabla_prestaciones .btn_del,
#tabla_prestaciones_sdi .btn_del {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition:
    color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
#tabla_prestaciones .btn_del:hover,
#tabla_prestaciones_sdi .btn_del:hover {
  color: var(--color-danger);
  background: #fef2f2;
}

/* Texto de ayuda */
#tabla_prestaciones td small,
#tabla_prestaciones_sdi td small {
  display: block;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Filas bloqueadas (mínimos de ley) */
#tabla_prestaciones_sdi .concepto[disabled],
#tabla_prestaciones_sdi .cantidad[disabled] {
  background: var(--color-bg);
  color: var(--color-text-muted);
  cursor: not-allowed;
  border-color: transparent;
}

/* Advertencias */
.advertencias-prestaciones {
  color: var(--color-warning);
  margin-top: var(--space-3);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* Estado vacío de tabla */
.table-empty {
  padding: var(--space-8) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ----------------------------------------------------------
   11. FOOTER
   ---------------------------------------------------------- */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0;
  margin-top: var(--space-16);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}
.footer-logo-mark {
  width: 28px;
  height: 28px;
  background: var(--color-bg-deep);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.footer-logo-mark .material-symbols-outlined {
  font-size: 16px;
}
.footer-logo-text {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  letter-spacing: -0.02em;
}
.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----------------------------------------------------------
   12. RESPONSIVE
   ---------------------------------------------------------- */

@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  .header-nav,
  .nav-divider,
  .header-cta {
    display: none;
  }

  .btn-menu-hamburger {
    display: flex;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .card-body {
    padding: var(--space-4);
  }
}

@media (min-width: 769px) {
  .btn-menu-hamburger {
    display: none !important;
  }
  #mobile-menu {
    display: none !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }
}

/* ----------------------------------------------------------
   13. ANIMACIONES DE ENTRADA
   ---------------------------------------------------------- */

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.animate-fade-up {
  animation: fade-up 0.5s var(--ease-out) both;
}
.animate-fade-in {
  animation: fade-in 0.4s var(--ease-out) both;
}

/* Delays escalonados */
.delay-1 { animation-delay: 0.05s; }
.delay-2 { animation-delay: 0.10s; }
.delay-3 { animation-delay: 0.15s; }
.delay-4 { animation-delay: 0.20s; }
.delay-5 { animation-delay: 0.25s; }