/* ============================================================
   🎓 SISTEMA KARDEX · DISEÑO VIBRANTE PREMIUM
   Maestrías · Doctorados · Especialidades
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ---------- VARIABLES (paleta más viva) ---------- */
:root {
  --azul-oscuro: #0B3D5F;
  --azul-medio: #1E5A7A;
  --azul-brillante: #2C7BE5;
  --azul-cielo: #E0F0FF;
  
  --morado: #7C3AED;
  --morado-suave: #EDE9FE;
  --verde: #059669;
  --verde-suave: #D1FAE5;
  --ambar: #D97706;
  --ambar-suave: #FEF3C7;
  --rojo: #DC2626;
  --rojo-suave: #FEE2E2;
  
  --exito: #10B981;
  --exito-fondo: #D1FAE5;
  --error: #EF4444;
  --error-fondo: #FEE2E2;
  
  --fondo: #F0F5FF;
  --blanco: #FFFFFF;
  --texto: #1E293B;
  --texto-suave: #475569;
  --borde: #CBD5E1;
  
  --radio: 14px;
  --radio-sm: 10px;
  --shadow-card: 0 8px 24px rgba(0,20,50,0.08);
  --shadow-card-hover: 0 14px 32px rgba(0,20,50,0.14);
  --shadow-btn: 0 6px 18px rgba(11,61,95,0.3);
  --shadow-btn-hover: 0 10px 24px rgba(11,61,95,0.5);
}

/* ---------- RESET ---------- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  background: linear-gradient(145deg, #e9f0fa 0%, #dce3f0 100%);
  color: var(--texto);
  padding: 28px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-attachment: fixed;
}

/* ---------- CONTENEDORES (tarjetas con brillo) ---------- */
.contenedor {
  width: 100%;
  max-width: 1150px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  border-radius: var(--radio);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  margin-bottom: 32px;
  border: 1px solid rgba(255,255,255,0.6);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.contenedor::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(44,123,229,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

/* Línea superior de color */
.contenedor::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--azul-brillante), var(--morado), var(--verde), var(--ambar));
  border-radius: var(--radio) var(--radio) 0 0;
}

/* Contenedores anchos (tablas) */
.contenedor:has(.tabla-responsiva) {
  max-width: 99%;
}

/* ---------- TÍTULOS ---------- */
h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--azul-oscuro);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.5px;
}

h2::before {
  content: '✦';
  font-size: 2rem;
  background: linear-gradient(135deg, var(--azul-brillante), var(--morado));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Íconos específicos por sección */
.contenedor:nth-child(1) h2::before { content: '⚡'; }
.contenedor:nth-child(2) h2::before { content: '📊'; }
.contenedor:nth-child(3) h2::before { content: '📋'; }

/* ---------- FORMULARIOS ---------- */
.grupo-form {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 16px;
  margin-bottom: 24px;
}

.campo {
  flex: 1 1 calc(50% - 16px);
  display: flex;
  flex-direction: column;
  min-width: 200px;
}

label {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--texto-suave);
  margin-bottom: 6px;
}

/* Inputs y selects */
.input-std,
.celda {
  padding: 12px 14px;
  border: 1.5px solid var(--borde);
  border-radius: var(--radio-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  background: white;
  transition: all 0.25s ease;
  outline: none;
  width: 100%;
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}

.input-std:hover,
.celda:hover {
  border-color: #94a3b8;
  background: #fafcff;
}

.input-std:focus,
.celda:focus {
  border-color: var(--azul-brillante);
  box-shadow: 0 0 0 4px rgba(44,123,229,0.15);
  background: white;
}

/* Select decorado */
select.input-std,
select.celda {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath d='M7 9L3 5h8z' fill='%23475569'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

/* Textarea pegado rápido */
textarea#pegadoRapido {
  width: 100%;
  padding: 14px;
  border: 2px dashed var(--azul-brillante);
  border-radius: var(--radio-sm);
  background: rgba(44,123,229,0.02);
  font-size: 0.85rem;
  resize: vertical;
  transition: 0.2s;
}

textarea#pegadoRapido:focus {
  background: white;
  border-style: solid;
  box-shadow: 0 0 0 4px rgba(44,123,229,0.1);
}

/* ---------- BOTONES (con mucha vida) ---------- */
button {
  background: linear-gradient(135deg, #1E5A7A 0%, #0B3D5F 100%);
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
  width: 100%;
  letter-spacing: 0.4px;
  box-shadow: var(--shadow-btn);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-size: 100% 100%;
  background-image: linear-gradient(135deg, #1a5c7c, #0a3a5a);
}

button::before {
  content: '💾';
  font-size: 1.1rem;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-btn-hover);
  background-image: linear-gradient(135deg, #1f6b90, #0b3d5f);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

button.btn-masivo {
  background: linear-gradient(135deg, #059669 0%, #10B981 100%);
  box-shadow: 0 6px 18px rgba(5,150,105,0.4);
}

button.btn-masivo::before {
  content: '📦';
}

button.btn-masivo:hover {
  box-shadow: 0 10px 24px rgba(5,150,105,0.6);
  background: linear-gradient(135deg, #047857, #059669);
}

/* ---------- TABLAS ---------- */
.tabla-responsiva {
  border-radius: var(--radio-sm);
  overflow-x: auto;
  background: white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid var(--borde);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1700px;
  font-size: 0.8rem;
}

th {
  background: linear-gradient(180deg, #0B3D5F 0%, #082c44 100%);
  color: white;
  font-weight: 600;
  padding: 16px 10px;
  text-align: left;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 3;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  padding: 12px 8px;
  border-bottom: 1px solid #f1f5f9;
  background: white;
  transition: background 0.2s;
}

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

tr:hover td {
  background: #f0f7ff;
  box-shadow: inset 0 0 0 1px #d0e0f5;
}

/* Celdas editables en tabla */
.celda {
  border: 1px solid transparent;
  background: transparent;
  padding: 8px 6px;
  font-size: 0.8rem;
  border-radius: 6px;
}

.celda:focus {
  background: white;
  border-color: var(--azul-brillante);
  box-shadow: 0 0 0 3px rgba(44,123,229,0.2);
}

/* ---------- BADGES DE ESTADO ---------- */
.estado-emitido {
  background: var(--exito-fondo);
  color: #065F46;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  display: inline-block;
  box-shadow: 0 2px 6px rgba(16,185,129,0.2);
}

.estado-observado {
  background: var(--error-fondo);
  color: #991B1B;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  display: inline-block;
  box-shadow: 0 2px 6px rgba(239,68,68,0.2);
}

/* ---------- BADGES DE TIPO DE PROGRAMA (para la tabla) ---------- */
.badge-programa {
  padding: 5px 12px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
}

.badge-maestria { background: var(--morado-suave); color: #5B21B6; }
.badge-doctorado { background: var(--verde-suave); color: #065F46; }
.badge-especialidad { background: var(--ambar-suave); color: #92400E; }
.badge-posdoctorado { background: var(--rojo-suave); color: #991B1B; }

/* ---------- ANIMACIONES EXTRA ---------- */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
  100% { transform: translateY(0px); }
}

.contenedor:nth-child(2) {
  animation: float 6s ease-in-out infinite;
}

/* Scrollbar */
::-webkit-scrollbar { height: 8px; width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; border-radius: 10px; }
::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  body { padding: 16px 10px; }
  .contenedor { padding: 24px 18px; }
  .campo { flex: 1 1 100%; }
  button { font-size: 0.85rem; }
  h2 { font-size: 1.3rem; }
}