/* ─── Variables y reset ───────────────────────────────────────────────── */
:root {
  --azul-principal: #1a6eb5;
  --azul-oscuro: #0f4c8a;
  --azul-claro: #e8f2fc;
  --verde-salud: #10b981;
  --verde-claro: #d1fae5;
  --gris-texto: #374151;
  --gris-suave: #6b7280;
  --gris-borde: #e5e7eb;
  --blanco: #ffffff;
  --fondo: #f8fafc;
  --sombra-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --sombra-md: 0 4px 16px rgba(0,0,0,.1);
  --sombra-lg: 0 10px 40px rgba(0,0,0,.12);
  --radio: 12px;
  --radio-lg: 20px;
  --transicion: .2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--fondo);
  color: var(--gris-texto);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ─── Utilidades ──────────────────────────────────────────────────────── */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.seccion-titulo {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--gris-texto);
  text-align: center;
  margin-bottom: 10px;
}
.seccion-subtitulo {
  text-align: center;
  color: var(--gris-suave);
  font-size: 1.05rem;
  margin-bottom: 48px;
}
.badge {
  display: inline-block;
  background: var(--azul-claro);
  color: var(--azul-principal);
  font-size: .8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
  letter-spacing: .03em;
  text-transform: uppercase;
}

/* ─── Navbar ──────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  padding: 20px 0;
  transition: background var(--transicion), box-shadow var(--transicion), padding var(--transicion);
}
#navbar.scrolled {
  background: var(--blanco);
  box-shadow: var(--sombra-md);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--blanco);
  transition: color var(--transicion);
}
#navbar.scrolled .nav-logo { color: var(--azul-principal); }
.nav-logo-icono {
  width: 38px; height: 38px;
  background: var(--azul-principal);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
#navbar.scrolled .nav-logo-icono { background: var(--azul-claro); }
#nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.88);
  transition: background var(--transicion), color var(--transicion);
}
.nav-link:hover { background: rgba(255,255,255,.18); color: var(--blanco); }
#navbar.scrolled .nav-link { color: var(--gris-suave); }
#navbar.scrolled .nav-link:hover { background: var(--azul-claro); color: var(--azul-principal); }
.nav-btn {
  padding: 9px 20px;
  background: var(--blanco);
  color: var(--azul-principal);
  border-radius: 8px;
  font-weight: 700;
  font-size: .9rem;
  transition: background var(--transicion), transform var(--transicion);
}
.nav-btn:hover { background: var(--azul-claro); transform: translateY(-1px); }
#navbar.scrolled .nav-btn { background: var(--azul-principal); color: var(--blanco); }
#navbar.scrolled .nav-btn:hover { background: var(--azul-oscuro); }
#hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
}
#hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--blanco);
  border-radius: 2px;
  transition: all var(--transicion);
}
#navbar.scrolled #hamburger span { background: var(--gris-texto); }

/* ─── Hero ────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul-principal) 55%, #2563eb 100%);
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}
#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-texto { color: var(--blanco); }
.hero-etiqueta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,.2);
}
.hero-titulo {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -.02em;
}
.hero-titulo span { color: #7dd3fc; }
.hero-desc {
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-acciones { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primario {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--blanco);
  color: var(--azul-principal);
  border-radius: var(--radio);
  font-weight: 700;
  font-size: 1rem;
  transition: all var(--transicion);
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
}
.btn-primario:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.btn-secundario {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  color: var(--blanco);
  border: 2px solid rgba(255,255,255,.5);
  border-radius: var(--radio);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transicion);
}
.btn-secundario:hover { background: rgba(255,255,255,.12); border-color: var(--blanco); }
.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 44px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--blanco);
  line-height: 1;
}
.stat-label {
  font-size: .8rem;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-tarjeta {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  padding: 28px;
  box-shadow: var(--sombra-lg);
  width: 100%;
  max-width: 360px;
}
.tarjeta-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gris-borde);
}
.tarjeta-avatar {
  width: 48px; height: 48px;
  background: var(--azul-claro);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.tarjeta-nombre { font-weight: 700; color: var(--gris-texto); font-size: 1rem; }
.tarjeta-esp { font-size: .85rem; color: var(--gris-suave); }
.tarjeta-detalle { display: flex; flex-direction: column; gap: 12px; }
.detalle-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--fondo);
  border-radius: 8px;
}
.detalle-icono { font-size: 1.1rem; }
.detalle-texto { font-size: .88rem; }
.detalle-texto strong { display: block; font-size: .78rem; color: var(--gris-suave); text-transform: uppercase; letter-spacing: .04em; }
.badge-confirmado {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--verde-claro);
  color: #065f46;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  margin-top: 16px;
}

/* ─── Sección especialidades ──────────────────────────────────────────── */
#especialidades {
  padding: 96px 0;
  background: var(--blanco);
}
.grid-especialidades {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.card-especialidad {
  background: var(--blanco);
  border: 2px solid var(--gris-borde);
  border-radius: var(--radio-lg);
  padding: 28px 24px;
  cursor: pointer;
  transition: all .25s ease;
  position: relative;
  overflow: hidden;
}
.card-especialidad::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--color-esp, var(--azul-principal));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.card-especialidad:hover, .card-especialidad:focus-visible {
  border-color: var(--color-esp, var(--azul-principal));
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,.1);
  outline: none;
}
.card-especialidad:hover::before, .card-especialidad.seleccionada::before { transform: scaleX(1); }
.card-especialidad.seleccionada {
  border-color: var(--color-esp, var(--azul-principal));
  background: var(--azul-claro);
  box-shadow: 0 0 0 3px rgba(26,110,181,.2);
}
.card-icono { font-size: 2.4rem; margin-bottom: 14px; }
.card-titulo { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; color: var(--gris-texto); }
.card-desc { font-size: .88rem; color: var(--gris-suave); line-height: 1.55; margin-bottom: 16px; }
.card-cta {
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-esp, var(--azul-principal));
  opacity: 0;
  transition: opacity var(--transicion);
}
.card-especialidad:hover .card-cta,
.card-especialidad.seleccionada .card-cta { opacity: 1; }

/* ─── Sección agendar ─────────────────────────────────────────────────── */
#agendar {
  padding: 96px 0;
  background: var(--fondo);
}
.form-wrapper {
  max-width: 760px;
  margin: 0 auto;
  background: var(--blanco);
  border-radius: var(--radio-lg);
  box-shadow: var(--sombra-lg);
  overflow: hidden;
}
.form-header {
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul-principal));
  padding: 28px 36px;
  color: var(--blanco);
}
.form-header h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.form-header p { font-size: .9rem; opacity: .85; }
.form-body { padding: 36px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-grupo { display: flex; flex-direction: column; gap: 6px; }
.form-grupo.full { grid-column: 1 / -1; }
.form-grupo label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gris-texto);
  letter-spacing: .01em;
}
.form-grupo label span { color: #ef4444; }
.form-control {
  padding: 11px 14px;
  border: 2px solid var(--gris-borde);
  border-radius: 8px;
  font-size: .95rem;
  color: var(--gris-texto);
  background: var(--blanco);
  transition: border-color var(--transicion), box-shadow var(--transicion);
  width: 100%;
}
.form-control:focus {
  outline: none;
  border-color: var(--azul-principal);
  box-shadow: 0 0 0 3px rgba(26,110,181,.12);
}
.form-control::placeholder { color: #9ca3af; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
select.form-control:disabled { background-color: var(--fondo); color: #9ca3af; cursor: not-allowed; }
textarea.form-control { resize: vertical; min-height: 90px; }
.divisor {
  grid-column: 1 / -1;
  border: none;
  border-top: 1px solid var(--gris-borde);
  margin: 6px 0;
}
#horarios-container { grid-column: 1 / -1; display: none; }
#horarios-container label { font-size: .85rem; font-weight: 600; color: var(--gris-texto); display: block; margin-bottom: 10px; }
#grid-horarios { display: flex; flex-wrap: wrap; gap: 10px; }
.btn-horario {
  padding: 8px 16px;
  border: 2px solid var(--gris-borde);
  border-radius: 8px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--gris-texto);
  transition: all var(--transicion);
  background: var(--blanco);
}
.btn-horario:hover { border-color: var(--azul-principal); color: var(--azul-principal); }
.btn-horario.activo { background: var(--azul-principal); color: var(--blanco); border-color: var(--azul-principal); }
.form-submit {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}
.btn-enviar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--azul-principal);
  color: var(--blanco);
  border-radius: var(--radio);
  font-weight: 700;
  font-size: 1rem;
  transition: all var(--transicion);
}
.btn-enviar:hover { background: var(--azul-oscuro); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(26,110,181,.35); }
.btn-limpiar {
  padding: 13px 20px;
  border: 2px solid var(--gris-borde);
  border-radius: var(--radio);
  font-weight: 600;
  font-size: 1rem;
  color: var(--gris-suave);
  transition: all var(--transicion);
}
.btn-limpiar:hover { border-color: #ef4444; color: #ef4444; }

/* ─── Alertas ─────────────────────────────────────────────────────────── */
.alerta {
  display: none;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  grid-column: 1 / -1;
}
.alerta-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alerta-exito { background: var(--verde-claro); color: #065f46; border: 1px solid #a7f3d0; }

/* ─── Sección éxito ───────────────────────────────────────────────────── */
#seccion-exito {
  display: none;
  max-width: 560px;
  margin: 32px auto 0;
  background: var(--blanco);
  border: 2px solid var(--verde-salud);
  border-radius: var(--radio-lg);
  padding: 36px;
  text-align: center;
  box-shadow: var(--sombra-md);
}
.exito-icono { font-size: 3.5rem; margin-bottom: 16px; }
#seccion-exito h3 { font-size: 1.4rem; font-weight: 700; color: #065f46; margin-bottom: 8px; }
#seccion-exito p { color: var(--gris-suave); margin-bottom: 16px; }
.folio-box {
  background: var(--verde-claro);
  border-radius: 10px;
  padding: 16px;
  margin-top: 16px;
}
.folio-label { font-size: .8rem; font-weight: 600; color: #065f46; text-transform: uppercase; letter-spacing: .05em; }
.folio-num { font-size: 1.8rem; font-weight: 800; color: #065f46; letter-spacing: .08em; }

/* ─── Cómo funciona ───────────────────────────────────────────────────── */
#como-funciona {
  padding: 96px 0;
  background: var(--blanco);
}
.pasos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  position: relative;
}
.paso-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radio-lg);
  background: var(--fondo);
  position: relative;
}
.paso-num {
  width: 56px; height: 56px;
  background: var(--azul-principal);
  color: var(--blanco);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 16px;
}
.paso-icono { font-size: 2rem; margin-bottom: 12px; }
.paso-titulo { font-weight: 700; margin-bottom: 8px; font-size: 1rem; }
.paso-desc { font-size: .88rem; color: var(--gris-suave); line-height: 1.6; }

/* ─── Modal ───────────────────────────────────────────────────────────── */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all .25s ease;
  backdrop-filter: blur(4px);
}
#modal-confirmacion.activo #modal-overlay,
#modal-overlay:has(+ #modal-confirmacion.activo),
body:has(#modal-confirmacion.activo) #modal-overlay { opacity: 1; visibility: visible; }
#modal-confirmacion {
  position: fixed;
  inset: 0;
  z-index: 2001;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#modal-confirmacion.activo {
  display: flex;
}
.modal-caja {
  background: var(--blanco);
  border-radius: var(--radio-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--sombra-lg);
  overflow: hidden;
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal-header {
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul-principal));
  padding: 24px 28px;
  color: var(--blanco);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 { font-size: 1.2rem; font-weight: 700; }
.modal-header p { font-size: .88rem; opacity: .8; margin-top: 2px; }
.btn-cerrar-modal {
  background: rgba(255,255,255,.2);
  color: var(--blanco);
  width: 32px; height: 32px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transicion);
}
.btn-cerrar-modal:hover { background: rgba(255,255,255,.35); }
.modal-body { padding: 28px; }
.confirm-lista { display: flex; flex-direction: column; gap: 12px; }
.confirm-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--fondo);
  border-radius: 10px;
}
.confirm-icono { font-size: 1.2rem; width: 28px; text-align: center; }
.confirm-etiqueta { font-size: .78rem; color: var(--gris-suave); text-transform: uppercase; letter-spacing: .04em; }
.confirm-valor { font-weight: 600; font-size: .95rem; }
.modal-footer {
  padding: 20px 28px 28px;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  border-top: 1px solid var(--gris-borde);
}
#btn-confirmar {
  padding: 12px 24px;
  background: var(--verde-salud);
  color: var(--blanco);
  border-radius: var(--radio);
  font-weight: 700;
  font-size: .95rem;
  transition: all var(--transicion);
}
#btn-confirmar:hover { background: #059669; transform: translateY(-1px); }
#btn-cancelar-modal {
  padding: 12px 20px;
  border: 2px solid var(--gris-borde);
  border-radius: var(--radio);
  font-weight: 600;
  font-size: .95rem;
  color: var(--gris-suave);
  transition: all var(--transicion);
}
#btn-cancelar-modal:hover { border-color: #ef4444; color: #ef4444; }

/* ─── Footer ──────────────────────────────────────────────────────────── */
footer {
  background: #0f172a;
  color: rgba(255,255,255,.75);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-marca .logo-footer {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--blanco);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-marca p { font-size: .88rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--blanco);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: .88rem; transition: color var(--transicion); }
.footer-col a:hover { color: var(--blanco); }
.footer-bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color: rgba(255,255,255,.6); }
.footer-bottom a:hover { color: var(--blanco); }

/* ─── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-texto .hero-desc { margin: 0 auto 36px; }
  .hero-acciones { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  #hamburger { display: flex; }
  #nav-menu {
    position: fixed;
    top: 0; right: -100%;
    width: min(300px, 85vw);
    height: 100vh;
    background: var(--blanco);
    flex-direction: column;
    padding: 80px 24px 24px;
    box-shadow: var(--sombra-lg);
    transition: right .3s ease;
  }
  #nav-menu.activo { right: 0; }
  #nav-menu .nav-link { color: var(--gris-texto); width: 100%; padding: 12px 16px; }
  #nav-menu .nav-btn { background: var(--azul-principal); color: var(--blanco); width: 100%; text-align: center; padding: 12px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grupo.full { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: row; flex-wrap: wrap; }
  .form-body { padding: 24px 20px; }
}