/* =======================================================================
   Base UI — Tu Chance (Diseño Mejorado y Modernizado)
   ======================================================================= */

/* ---------- Variables Mejoradas ---------- */
:root{
  --bg: #f8fafc;
  --card: #ffffff;
  
  /* Colores de texto mejorados para mejor contraste */
  --text: #0f172a;        /* Texto más oscuro para mejor legibilidad */
  --muted: #475569;       /* Texto secundario más contrastado */
  --line: #e2e8f0;        /* Bordes más suaves */
  
  /* Colores primarios más vibrantes */
  --primary: #2563eb;     /* Azul más intenso */
  --primary-light: #dbeafe;
  --primary-dark: #1e40af;
  --primary-ink: #ffffff;
  
  /* Badges con mejor contraste */
  --pending: #d97706;
  --confirmed: #059669;
  --denied: #dc2626;
  
  /* Sombras mejoradas */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Bordes redondeados consistentes */
  --radius: 12px;
  --radius-lg: 16px;
}

/* ---------- Resets y Tipografía Mejorada ---------- */
*{ 
  box-sizing: border-box; 
  min-width: 0;
  margin: 0;
  padding: 0;
}

html, body{ 
  height: 100%;
  scroll-behavior: smooth;
}

html{
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  color-scheme: light;
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Enlaces Mejorados ---------- */
a{
  color: var(--primary);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 500;
}

a:hover{ 
  color: var(--primary-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

/* ---------- Contenedor y Texto Mejorado ---------- */
.container{
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px;
}

h1, h2, h3, h4, h5, h6{
  margin: 0 0 1rem;
  line-height: 1.3;
  letter-spacing: -0.025em;
  color: var(--text);
  text-wrap: balance;
  font-weight: 700;
}

h1{ font-size: clamp(2rem, 4vw, 3rem); }
h2{ font-size: clamp(1.75rem, 3vw, 2.25rem); }
h3{ font-size: clamp(1.5rem, 2.5vw, 1.875rem); }

p{ 
  margin: 1rem 0; 
  color: var(--text);
  line-height: 1.7;
}

.muted{ 
  color: var(--muted);
  font-size: 0.95rem;
}

/* Mejor ajuste de texto */
p, li{
  text-wrap: pretty;
  overflow-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}

/* ---------- Header / Nav Mejorado ---------- */
.site-header{
  position: sticky; 
  top: 0; 
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.header-inner{
  display: flex; 
  align-items: center; 
  justify-content: space-between;
  gap: 24px; 
  padding: 16px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand{ 
  display: flex; 
  align-items: center; 
  gap: 12px; 
  min-width: 0; 
}

.brand .logo{ 
  height: 32px; 
  width: auto; 
  display: block;
  border-radius: 6px;
}

.brand-name{
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--text);
  opacity: 1 !important;
  -webkit-text-fill-color: currentColor;
  white-space: nowrap; 
  overflow: hidden; 
  text-overflow: ellipsis;
}

.main-nav{ 
  display: flex; 
  gap: 8px; 
  align-items: center; 
  flex-wrap: wrap; 
  min-width: 0; 
}

.main-nav a{
  color: var(--text);
  text-decoration: none;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.main-nav a:hover{ 
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.main-nav a.is-active{
  background: var(--primary);
  color: var(--primary-ink);
  font-weight: 600;
  box-shadow: var(--shadow);
}

.header-actions{ 
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ---------- Botones Mejorados ---------- */
.btn, .btn-outline{
  display: inline-flex; 
  align-items: center; 
  justify-content: center;
  padding: 12px 20px;
  border-radius: var(--radius);
  text-decoration: none; 
  font-weight: 600; 
  border: 1px solid transparent;
  line-height: 1.2;
  transition: all 0.2s ease;
  cursor: pointer;
  font-size: 0.95rem;
  gap: 8px;
}

.btn{ 
  background: var(--primary); 
  color: var(--primary-ink);
  box-shadow: var(--shadow);
}

.btn:hover{ 
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline{ 
  background: transparent; 
  color: var(--primary); 
  border-color: var(--primary);
}

.btn-outline:hover{ 
  background: var(--primary); 
  color: var(--primary-ink);
  transform: translateY(-1px);
}

.btn:focus-visible, .btn-outline:focus-visible{
  outline: 3px solid color-mix(in srgb, var(--primary) 30%, transparent);
  outline-offset: 2px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ---------- Cards / Secciones Mejoradas ---------- */
.card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  margin: 24px 0;
  color: var(--text);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.section{ 
  padding-top: 16px;
}

.card-header {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.card-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
}

/* Listas dentro de card */
.card ul{ 
  margin: 1rem 0 0 0; 
  padding-left: 1.5rem; 
}
.card ul li{ 
  margin: 0.5rem 0;
  line-height: 1.6;
}

/* ---------- Tablas Mejoradas ---------- */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 1.5rem 0;
}

.table{
  width: 100%; 
  border-collapse: collapse; 
  background: var(--card);
  color: var(--text);
  min-width: 600px;
}

.table th, .table td{
  padding: 16px 20px; 
  border-bottom: 1px solid var(--line); 
  text-align: left;
  vertical-align: middle;
}

.table thead th{ 
  background: #f8fafc; 
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.table tbody tr{
  transition: background-color 0.2s ease;
}

.table tbody tr:hover{ 
  background: #f8fafc;
}

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

/* ---------- Badges Mejorados ---------- */
.badge{
  display: inline-flex; 
  align-items: center;
  font-size: 0.75rem; 
  font-weight: 700;
  padding: 6px 12px; 
  border-radius: 999px; 
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  gap: 4px;
}

.badge--pending{
  color: var(--pending);
  background: color-mix(in srgb, var(--pending) 10%, #fff);
  border-color: color-mix(in srgb, var(--pending) 25%, #fff);
}

.badge--confirmed{
  color: var(--confirmed);
  background: color-mix(in srgb, var(--confirmed) 10%, #fff);
  border-color: color-mix(in srgb, var(--confirmed) 25%, #fff);
}

.badge--denied{
  color: var(--denied);
  background: color-mix(in srgb, var(--denied) 10%, #fff);
  border-color: color-mix(in srgb, var(--denied) 25%, #fff);
}

/* ---------- Footer Mejorado ---------- */
.site-footer{
  border-top: 1px solid var(--line);
  background: #fff; 
  color: var(--muted);
  margin-top: 48px;
}

.site-footer .container{ 
  padding: 32px 20px; 
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-footer small{ 
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: var(--primary);
}

/* =======================================================================
   Componentes Específicos del Admin Mejorados
   ======================================================================= */

/* ---------- Dashboard Stats ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.stat-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-card h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  margin: 8px 0;
}

.stat-card .change {
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 8px;
}

.stat-card .change.positive {
  color: var(--confirmed);
}

.stat-card .change.negative {
  color: var(--denied);
}

/* ---------- Formularios Mejorados ---------- */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: all 0.2s ease;
  background: var(--card);
  color: var(--text);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
}

.form-text {
  display: block;
  margin-top: 6px;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ---------- Grid System Mejorado ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ---------- Alertas / Notificaciones ---------- */
.alert {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  border-left: 4px solid transparent;
  font-weight: 500;
}

.alert-success {
  background: color-mix(in srgb, var(--confirmed) 8%, #fff);
  border-color: var(--confirmed);
  color: color-mix(in srgb, var(--confirmed) 70%, #000);
}

.alert-warning {
  background: color-mix(in srgb, var(--pending) 8%, #fff);
  border-color: var(--pending);
  color: color-mix(in srgb, var(--pending) 70%, #000);
}

.alert-error {
  background: color-mix(in srgb, var(--denied) 8%, #fff);
  border-color: var(--denied);
  color: color-mix(in srgb, var(--denied) 70%, #000);
}

/* =======================================================================
   Utilidades Mejoradas
   ======================================================================= */

/* Texto sobre imagen */
.text-on-image{
  position: relative;
  color: #fff;
  -webkit-text-fill-color: #fff;
}
.text-on-image::before{
  content: "";
  position: absolute; 
  inset: 0; 
  border-radius: inherit;
  background: linear-gradient(0deg, rgba(0,0,0,.5), rgba(0,0,0,.3));
  pointer-events: none;
}
.text-on-image > *{ position: relative; }

/* Overlay para atenuar */
.is-dim{ position: relative; }
.is-dim::after{
  content: ""; 
  position: absolute; 
  inset: 0; 
  border-radius: inherit;
  background: rgba(255,255,255,.7); 
  pointer-events: none;
}

/* Imágenes responsivas */
img{ 
  display: block; 
  max-width: 100%; 
  height: auto;
  border-radius: var(--radius);
}

/* Selección de texto */
::selection{ 
  background: color-mix(in srgb, var(--primary) 30%, transparent); 
  color: var(--text);
}

/* =======================================================================
   Responsive Mejorado
   ======================================================================= */

@media (max-width: 1024px){
  .container{
    padding: 20px;
  }
  
  .grid-2, .grid-3, .grid-4{
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .stats-grid{
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px){
  .header-inner{
    flex-direction: column;
    gap: 16px;
    padding: 16px 20px;
  }
  
  .main-nav{
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 4px;
  }
  
  .header-actions{
    order: 2;
  }
  
  .stats-grid{
    grid-template-columns: 1fr;
  }
  
  .site-footer .container{
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .footer-links{
    justify-content: center;
  }
  
  .card{
    padding: 20px;
    margin: 20px 0;
  }
  
  .table th,
  .table td{
    padding: 12px 16px;
  }
}

@media (max-width: 480px){
  .container{ 
    padding: 16px;
  }
  
  .card{ 
    padding: 20px 16px; 
    border-radius: var(--radius);
    margin: 16px 0;
  }
  
  .main-nav a{ 
    padding: 8px 12px;
    font-size: 0.9rem;
  }
  
  .btn, .btn-outline{
    padding: 10px 16px;
    font-size: 0.9rem;
  }
  
  .stat-card{
    padding: 20px;
  }
  
  .stat-card .value{
    font-size: 2rem;
  }
  
  h1{ font-size: clamp(1.75rem, 5vw, 2.5rem); }
  h2{ font-size: clamp(1.5rem, 4vw, 2rem); }
  h3{ font-size: clamp(1.25rem, 3vw, 1.75rem); }
}

/* Accesibilidad mejorada */
@media (prefers-contrast: more){
  :root{
    --text: #000000;
    --muted: #404040;
    --line: #000000;
  }
  
  .btn{ 
    filter: saturate(1.2) contrast(1.2);
    border-width: 2px;
  }
  
  .card{ 
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
    border-width: 2px;
  }
}

/* =======================================================================
   Tema Oscuro Mejorado
   ======================================================================= */

@media (prefers-color-scheme: dark){
  :root{
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --line: #334155;
    
    --primary: #3b82f6;
    --primary-light: #1e3a8a;
    --primary-dark: #60a5fa;
  }
  
  .site-header{
    background: #1e293b;
    border-bottom-color: #334155;
  }
  
  .table thead th{
    background: #1e293b;
  }
  
  .table tbody tr:hover{
    background: #1e293b;
  }
  
  .site-footer{
    background: #1e293b;
    border-top-color: #334155;
  }
  
  .is-dim::after{
    background: rgba(0,0,0,.5);
  }
}

/* =======================================================================
   Safari / iOS - Mejoras de Legibilidad
   ======================================================================= */

@supports (-webkit-touch-callout: none) {
  :root{
    --text: #0a0f1a;
    --muted: #2b3a4f;
  }
  
  body{
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  
  .site-header, .header-inner, .card, .table{
    isolation: isolate;
    color: var(--text);
  }
  
  .main-nav a{ 
    color: var(--text) !important;
  }
  
  .main-nav a.is-active{
    background: color-mix(in srgb, var(--primary) 20%, #fff);
    color: var(--primary-ink) !important;
  }
}

/* Fallback para navegadores que no soportan color-mix */
@supports not (background: color-mix(in srgb, red 10%, white)) {
  .main-nav a.is-active{ 
    background: rgba(37, 99, 235, 0.15);
  }
  
  .badge--pending{
    background: rgba(217, 119, 6, 0.1);
    border-color: rgba(217, 119, 6, 0.3);
  }
  
  .badge--confirmed{
    background: rgba(5, 150, 105, 0.1);
    border-color: rgba(5, 150, 105, 0.3);
  }
  
  .badge--denied{
    background: rgba(220, 38, 38, 0.1);
    border-color: rgba(220, 38, 38, 0.3);
  }
}