/* =============================================
   Red Tlahuilli de Clubes de Ciencia - Estilos Globales
   ============================================= */

:root {
  --primario: #0057c8;       /* Azul eléctrico vibrante del logo */
  --secundario: #00b050;     /* Verde brillante de la hoja */
  --acento: #ff2d78;         /* Rosa/magenta del matraz */
  --morado: #7b2fbe;         /* Violeta de la flor */
  --naranja: #ff8c00;        /* Naranja del arcoíris */
  --fondo: #f0f7ff;          /* Fondo azul muy claro */
  --blanco: #ffffff;
  --texto: #0d1b3e;
  --texto-claro: #5a6a8a;
  --sombra: rgba(0,87,200,0.12);
  --radio: 12px;
  --transicion: 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  line-height: 1.6;
}

/* ---- HEADER / NAVBAR ---- */
header {
  background: var(--primario);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 15px var(--sombra);
}
.navbar {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}
.logo-area { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.logo-area img { height: 100px; width: auto; }
.logo-placeholder {
  width: 100px; height: 100px; background: var(--secundario); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.logo-texto h1 { color: var(--blanco); font-size: 1.3rem; font-weight: 700; letter-spacing: 0.5px; }
.logo-texto p { color: var(--secundario); font-size: 0.75rem; letter-spacing: 1px; text-transform: uppercase; }
nav ul { list-style: none; display: flex; gap: 8px; align-items: center; }
nav a {
  color: rgba(255,255,255,0.85); text-decoration: none; padding: 8px 16px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 500; transition: var(--transicion);
}
nav a:hover { background: rgba(255,255,255,0.15); color: var(--blanco); }
nav a.activo { background: var(--secundario); color: var(--primario); font-weight: 700; }
nav a.btn-registro { background: var(--acento); color: var(--blanco); font-weight: 700; }
nav a.btn-registro:hover { background: #cc1a60; }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, #0057c8 0%, #7b2fbe 55%, #ff2d78 100%);
  color: var(--blanco); padding: 80px 24px; text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(46,204,113,0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(243,156,18,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-content { max-width: 800px; margin: 0 auto; position: relative; z-index: 1; }
.hero h2 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.hero h2 span { color: var(--secundario); }
.hero p { font-size: 1.15rem; opacity: 0.9; margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-botones { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- BOTONES ---- */
.btn {
  display: inline-block; padding: 14px 30px; border-radius: var(--radio); font-size: 1rem; font-weight: 600;
  text-decoration: none; cursor: pointer; border: none; transition: var(--transicion); letter-spacing: 0.3px;
  font-family: inherit;
}
.btn-primario { background: var(--secundario); color: var(--primario); }
.btn-primario:hover { background: #27ae60; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(46,204,113,0.3); }
.btn-secundario { background: transparent; color: var(--blanco); border: 2px solid rgba(255,255,255,0.6); }
.btn-secundario:hover { background: rgba(255,255,255,0.1); border-color: var(--blanco); transform: translateY(-2px); }
.btn-acento { background: var(--acento); color: var(--blanco); }
.btn-acento:hover { background: #cc1a60; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(243,156,18,0.3); }
.btn-outline { background: transparent; color: var(--primario); border: 2px solid var(--primario); }
.btn-outline:hover { background: var(--primario); color: var(--blanco); }
.btn-sm { padding: 8px 14px; font-size: 0.85rem; border-radius: 8px; }
.btn-peligro { background: #e74c3c; color: var(--blanco); }
.btn-peligro:hover { background: #c0392b; }

/* ---- SECCIONES ---- */
section { padding: 64px 24px; }
.container { max-width: 1200px; margin: 0 auto; }
.seccion-titulo { text-align: center; margin-bottom: 48px; }
.seccion-titulo h2 { font-size: 2rem; color: var(--primario); margin-bottom: 12px; }
.seccion-titulo p { color: var(--texto-claro); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.etiqueta {
  display: inline-block; background: rgba(46,204,113,0.15); color: var(--secundario);
  border: 1px solid rgba(46,204,113,0.3); font-size: 0.78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; padding: 4px 12px; border-radius: 20px; margin-bottom: 12px;
}

/* ---- CARDS ---- */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card {
  background: var(--blanco); border-radius: var(--radio); padding: 28px; box-shadow: 0 4px 20px var(--sombra);
  transition: var(--transicion); border: 1px solid rgba(0,0,0,0.05);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.15); }
.card-icono { font-size: 2.5rem; margin-bottom: 16px; }
.card h3 { font-size: 1.1rem; color: var(--primario); margin-bottom: 10px; }
.card p { font-size: 0.9rem; color: var(--texto-claro); line-height: 1.6; }

/* ---- PRÓXIMOS EVENTOS ---- */
.evento-card {
  background: var(--blanco); border-radius: var(--radio); overflow: hidden; box-shadow: 0 4px 20px var(--sombra);
  display: flex; transition: var(--transicion); border: 1px solid rgba(0,0,0,0.05); margin-bottom: 16px;
}
.evento-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.12); }
.evento-fecha {
  background: var(--primario); color: var(--blanco); padding: 20px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; min-width: 90px; text-align: center;
}
.evento-fecha .dia { font-size: 2.2rem; font-weight: 800; line-height: 1; }
.evento-fecha .mes { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--secundario); font-weight: 600; }
.evento-info { padding: 20px 24px; flex: 1; }
.evento-info h3 { font-size: 1.1rem; color: var(--primario); margin-bottom: 6px; }
.evento-info p { font-size: 0.88rem; color: var(--texto-claro); margin-bottom: 12px; }
.evento-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { background: rgba(26,58,92,0.08); color: var(--primario); padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 500; }
.tag.verde { background: rgba(46,204,113,0.12); color: #1a7a45; }
.tag.naranja { background: rgba(243,156,18,0.12); color: #b7770d; }
.tag.rojo { background: rgba(231,76,60,0.12); color: #a93226; }
.tag.gris { background: rgba(90,106,138,0.12); color: #5a6a8a; }
.evento-accion { padding: 20px; display: flex; align-items: center; }

/* ---- ESTADÍSTICAS ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; }
.stat-card {
  background: var(--blanco); border-radius: var(--radio); padding: 28px 20px; text-align: center;
  box-shadow: 0 4px 20px var(--sombra); border-top: 4px solid var(--primario);
}
.stat-card .numero { font-size: 2.8rem; font-weight: 800; color: var(--primario); line-height: 1; margin-bottom: 8px; }
.stat-card .label { font-size: 0.85rem; color: var(--texto-claro); font-weight: 500; }

/* ---- QUIÉNES SOMOS ---- */
.quienes-somos { background: var(--primario); color: var(--blanco); }
.quienes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.quienes-texto h2 { font-size: 2rem; margin-bottom: 20px; line-height: 1.3; }
.quienes-texto h2 span { color: var(--secundario); }
.quienes-texto p { opacity: 0.85; margin-bottom: 16px; font-size: 0.95rem; }
.quienes-lista { list-style: none; margin-top: 24px; }
.quienes-lista li {
  padding: 10px 0; display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 0.9rem; opacity: 0.9;
}
.quienes-lista li .icono { font-size: 1.3rem; flex-shrink: 0; }
.quienes-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.visual-card {
  background: rgba(255,255,255,0.08); border-radius: var(--radio); padding: 24px 20px; text-align: center;
  border: 1px solid rgba(255,255,255,0.12);
}
.visual-card .emoji { font-size: 2rem; margin-bottom: 10px; }
.visual-card h4 { font-size: 0.85rem; font-weight: 600; opacity: 0.9; }

/* ---- CTA FINAL ---- */
.cta-final { background: linear-gradient(135deg, #7b2fbe, #0057c8); color: var(--blanco); text-align: center; padding: 80px 24px; }
.cta-final h2 { font-size: 2.2rem; margin-bottom: 16px; }
.cta-final p { font-size: 1.05rem; opacity: 0.85; margin-bottom: 36px; max-width: 550px; margin-left: auto; margin-right: auto; }
.cta-botones { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- FOOTER ---- */
footer { background: #0a1628; color: rgba(255,255,255,0.6); padding: 40px 24px 24px; }
.footer-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand h3 { color: var(--blanco); font-size: 1.1rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 { color: var(--blanco); font-size: 0.9rem; margin-bottom: 14px; font-weight: 600; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.85rem; transition: var(--transicion); }
.footer-col a:hover { color: var(--secundario); }
.footer-creditos {
  max-width: 1200px; margin: 0 auto 0; text-align: center; padding: 18px 24px 10px;
  border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.78rem; color: rgba(255,255,255,0.45);
}
.footer-creditos strong { color: rgba(255,255,255,0.65); font-weight: 600; }
.footer-bottom { max-width: 1200px; margin: 0 auto; text-align: center; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.06); font-size: 0.8rem; }

/* ---- FORMULARIOS ---- */
.form-page { min-height: 100vh; display: flex; flex-direction: column; }
.form-hero { background: linear-gradient(135deg, #0057c8, #7b2fbe); color: var(--blanco); padding: 50px 24px; text-align: center; }
.form-hero h2 { font-size: 2rem; margin-bottom: 10px; }
.form-hero p { opacity: 0.85; max-width: 500px; margin: 0 auto; }
.form-container { max-width: 760px; margin: 0 auto; padding: 48px 24px; flex: 1; width: 100%; }
.form-container.ancho { max-width: 1100px; }
.form-card { background: var(--blanco); border-radius: 16px; padding: 40px; box-shadow: 0 8px 40px rgba(0,0,0,0.1); }
.form-section { margin-bottom: 32px; }
.form-section-titulo {
  font-size: 1rem; font-weight: 700; color: var(--primario); margin-bottom: 20px; padding-bottom: 10px;
  border-bottom: 2px solid rgba(26,58,92,0.1); display: flex; align-items: center; gap: 10px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row.tres { grid-template-columns: 1fr 1fr 1fr; }
.form-grupo { margin-bottom: 18px; }
.form-grupo label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--texto); margin-bottom: 6px; }
.form-grupo label .req { color: #e74c3c; margin-left: 2px; }
.form-grupo input, .form-grupo select, .form-grupo textarea {
  width: 100%; padding: 11px 14px; border: 1.5px solid #dde3ec; border-radius: 8px; font-size: 0.9rem;
  color: var(--texto); background: #fafbfc; transition: var(--transicion); font-family: inherit;
}
.form-grupo input:focus, .form-grupo select:focus, .form-grupo textarea:focus {
  outline: none; border-color: var(--secundario); background: var(--blanco); box-shadow: 0 0 0 3px rgba(46,204,113,0.15);
}
.form-grupo textarea { resize: vertical; min-height: 90px; }
.form-grupo select { cursor: pointer; }
.form-grupo .ayuda { font-size: 0.78rem; color: var(--texto-claro); margin-top: 4px; }
.form-grupo .error-campo { font-size: 0.8rem; color: #c0392b; margin-top: 4px; font-weight: 600; }
.form-grupo.con-error input, .form-grupo.con-error select, .form-grupo.con-error textarea { border-color: #e74c3c; }
.checkbox-grupo {
  display: flex; align-items: flex-start; gap: 10px; cursor: pointer; padding: 10px 14px; border-radius: 8px;
  border: 1.5px solid #dde3ec; transition: var(--transicion);
}
.checkbox-grupo:hover { border-color: var(--secundario); background: rgba(46,204,113,0.04); }
.checkbox-grupo input[type="checkbox"] { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; cursor: pointer; accent-color: var(--secundario); }
.checkbox-grupo .texto { font-size: 0.88rem; color: var(--texto); }
.checkbox-grupo .texto strong { display: block; color: var(--primario); font-size: 0.9rem; }
.info-box {
  background: rgba(46,204,113,0.08); border: 1px solid rgba(46,204,113,0.25); border-radius: 8px; padding: 14px 18px;
  font-size: 0.85rem; color: #1a7a45; margin-bottom: 24px; display: flex; gap: 10px; align-items: flex-start;
}
.alerta-box { background: rgba(243,156,18,0.1); border: 1px solid rgba(243,156,18,0.3); border-radius: 8px; padding: 14px 18px; font-size: 0.85rem; color: #8a5d0a; margin-bottom: 24px; }
.error-box { background: rgba(231,76,60,0.08); border: 1px solid rgba(231,76,60,0.3); border-radius: 8px; padding: 14px 18px; font-size: 0.88rem; color: #a93226; margin-bottom: 24px; font-weight: 600; }
.form-submit { text-align: center; margin-top: 10px; }
.form-submit .btn { width: 100%; font-size: 1.05rem; padding: 16px; }
.form-nota { text-align: center; margin-top: 16px; font-size: 0.82rem; color: var(--texto-claro); }
.form-nota a { color: var(--primario); font-weight: 600; }

/* ---- SELECTOR DE TALLERES ---- */
.talleres-grid { display: grid; gap: 12px; }
.taller-opcion {
  border: 2px solid #dde3ec; border-radius: 10px; padding: 16px 18px; cursor: pointer; transition: var(--transicion);
  display: flex; align-items: flex-start; gap: 14px; background: var(--blanco);
}
.taller-opcion:hover { border-color: var(--secundario); background: rgba(46,204,113,0.04); }
.taller-opcion.seleccionado { border-color: var(--secundario); background: rgba(46,204,113,0.08); }
.taller-opcion.lleno, .taller-opcion.deshabilitado { opacity: 0.55; cursor: not-allowed; background: #f5f5f5; }
.taller-opcion input[type="checkbox"] { margin-top: 3px; accent-color: var(--secundario); width: 17px; height: 17px; flex-shrink: 0; }
.taller-detalle { flex: 1; }
.taller-detalle h4 { font-size: 0.95rem; color: var(--primario); margin-bottom: 4px; }
.taller-detalle p { font-size: 0.82rem; color: var(--texto-claro); margin-bottom: 6px; }
.taller-meta { display: flex; gap: 10px; flex-wrap: wrap; }
.meta-item { display: flex; align-items: center; gap: 4px; font-size: 0.78rem; color: var(--texto-claro); }

/* ---- MENSAJES (Django messages) ---- */
.mensajes { max-width: 1100px; margin: 16px auto 0; padding: 0 24px; }
.mensaje { padding: 12px 18px; border-radius: 10px; margin-bottom: 10px; font-size: 0.9rem; font-weight: 600; border: 1px solid transparent; }
.mensaje.exito { background: rgba(0,176,80,0.1); color: #1a7a45; border-color: rgba(0,176,80,0.3); }
.mensaje.error { background: rgba(231,76,60,0.1); color: #a93226; border-color: rgba(231,76,60,0.3); }
.mensaje.aviso { background: rgba(243,156,18,0.12); color: #8a5d0a; border-color: rgba(243,156,18,0.3); }
.mensaje.info { background: rgba(0,87,200,0.08); color: var(--primario); border-color: rgba(0,87,200,0.25); }

/* ---- TABLAS ---- */
.tabla { width: 100%; border-collapse: collapse; background: var(--blanco); border-radius: var(--radio); overflow: hidden; box-shadow: 0 4px 20px var(--sombra); font-size: 0.9rem; }
.tabla th { background: var(--primario); color: var(--blanco); text-align: left; padding: 12px 14px; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }
.tabla td { padding: 12px 14px; border-bottom: 1px solid #eef2f8; vertical-align: middle; }
.tabla tr:last-child td { border-bottom: none; }
.tabla tr:hover td { background: #f7faff; }
.tabla-wrap { overflow-x: auto; }

/* ---- PERFIL / CATEGORÍAS ---- */
.perfil-grid { display: grid; grid-template-columns: 320px 1fr; gap: 24px; align-items: start; }
.perfil-card { background: var(--blanco); border-radius: 16px; padding: 28px; box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.perfil-card h3 { color: var(--primario); font-size: 1rem; margin-bottom: 14px; }
.codigo-grande { font-family: 'Consolas', monospace; font-size: 1.6rem; font-weight: 800; color: var(--primario); letter-spacing: 2px; }
.cat-badge { display: inline-block; padding: 6px 14px; border-radius: 20px; font-weight: 700; font-size: 0.9rem; }
.cat-chispa { background: #fef3c7; color: #92400e; }
.cat-explorador { background: #dbeafe; color: #1e40af; }
.cat-aprendiz { background: #dcfce7; color: #166534; }
.cat-investigador { background: #ede9fe; color: #5b21b6; }
.cat-cientifico { background: #fce7f3; color: #9d174d; }
.cat-tlahuilli, .cat-tlakakini { background: #fef3c7; color: #b45309; border: 2px solid #f59e0b; }
.barra { height: 12px; background: #e6edf7; border-radius: 8px; overflow: hidden; margin: 10px 0 6px; }
.barra > div { height: 100%; background: linear-gradient(90deg, var(--secundario), var(--primario)); border-radius: 8px; }
.puntos-num { font-size: 3rem; font-weight: 800; color: var(--primario); line-height: 1; }
.credencial { width: 360px; margin: 0 auto; background: linear-gradient(135deg, #0057c8, #7b2fbe); color: #fff; border-radius: 18px; padding: 24px; text-align: center; }
.credencial .nombre { font-size: 1.2rem; font-weight: 700; margin: 10px 0 4px; }
.credencial .codigo { font-family: 'Consolas', monospace; font-size: 1.5rem; letter-spacing: 3px; font-weight: 800; background: rgba(255,255,255,0.15); padding: 8px; border-radius: 10px; margin-top: 12px; }
.acciones-inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.acciones-inline form { display: inline; }
.radio-asistencia label { margin-right: 12px; font-size: 0.85rem; cursor: pointer; }

/* ---- AJUSTES DE CONTRASTE Y ACCESIBILIDAD (v2) ---- */
/* Texto blanco sobre verde más oscuro: se lee bien (antes azul sobre verde). */
.btn-primario { background: #00893d; color: #fff; }
.btn-primario:hover { background: #00722f; }
nav a.activo { background: rgba(255,255,255,0.22); color: #fff; }
.logo-texto p { color: #b8f5cd; }
.hero h2 span, .quienes-texto h2 span { color: #8ff5b4; }
.hero .etiqueta { background: rgba(255,255,255,0.18); color: #fff; border-color: rgba(255,255,255,0.4); }
.evento-fecha .mes { color: #b8f5cd; }
.etiqueta { color: #007a36; }
.btn:disabled, .btn[disabled] {
  opacity: 0.45; cursor: not-allowed; transform: none !important; box-shadow: none !important;
}
.btn:focus-visible, nav a:focus-visible, .taller-opcion:focus-within {
  outline: 3px solid #ffb400; outline-offset: 2px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero h2 { font-size: 1.9rem; }
  .quienes-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-content { grid-template-columns: 1fr; gap: 24px; }
  .form-row, .form-row.tres { grid-template-columns: 1fr; }
  .form-card { padding: 24px 20px; }
  .navbar { flex-direction: column; gap: 8px; padding: 10px 14px; }
  nav ul { flex-wrap: wrap; justify-content: center; gap: 4px; }
  nav a { padding: 6px 10px; font-size: 0.82rem; }
  .logo-area img { height: 52px; }
  .logo-texto h1 { font-size: 1.05rem; }
  .logo-texto p { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 18px 10px; }
  .stat-card .numero { font-size: 2.1rem; }
  .form-hero { padding: 32px 18px; }
  .form-hero h2 { font-size: 1.5rem; }
  .form-container { padding: 24px 12px; }
  section { padding: 44px 16px; }
  .evento-card { flex-direction: column; }
  .evento-fecha { flex-direction: row; gap: 8px; padding: 14px 20px; }
  .quienes-visual { grid-template-columns: 1fr 1fr; }
  .perfil-grid { grid-template-columns: 1fr; }
  .credencial { width: 100%; }
}
@media print {
  header, footer, nav, .no-imprimir, .mensajes { display: none !important; }
  body { background: #fff; }
}