/* ============================================================
   VARIABLES CSS
   ============================================================ */
:root {
  --color-primario: #E07B54;
  --color-primario-suave: #FFF0E8;
  --color-fondo: #FDFAF7;
  --color-fondo-alt: #F5EFE8;
  --color-texto: #2C2420;
  --color-texto-suave: #7A6A62;
  --color-borde: rgba(44, 36, 32, 0.12);
  --color-exito: #4A9B6F;
  --color-error: #C0392B;

  --radio: 16px;
  --radio-sm: 8px;
  --radio-pill: 100px;

  --fuente-titulo: 'Lora', Georgia, serif;
  --fuente-cuerpo: 'Inter', system-ui, sans-serif;

  --sombra-suave: 0 2px 16px rgba(44, 36, 32, 0.08);
  --sombra-card: 0 4px 24px rgba(44, 36, 32, 0.10);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--fuente-cuerpo);
  background-color: var(--color-fondo);
  color: var(--color-texto);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--fuente-titulo);
  font-weight: 600;
  line-height: 1.25;
}

a {
  color: var(--color-primario);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.contenedor {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

/* ============================================================
   BOTONES
   ============================================================ */
.btn-primario {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primario);
  color: #fff;
  border: none;
  border-radius: var(--radio-pill);
  padding: 14px 28px;
  font-family: var(--fuente-cuerpo);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
}

.btn-primario:hover {
  background: #C96A43;
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}

.btn-secundario {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-primario);
  border: 1.5px solid var(--color-primario);
  border-radius: var(--radio-pill);
  padding: 13px 27px;
  font-family: var(--fuente-cuerpo);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
  text-decoration: none;
}

.btn-secundario:hover {
  background: var(--color-primario-suave);
  transform: translateY(-1px);
  text-decoration: none;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-fondo);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s, border-color 0.3s;
  /* needed for absolute-positioned mobile menu */
  position: sticky; /* re-stated to force stacking context */
}

.navbar.scrolled {
  box-shadow: var(--sombra-suave);
  border-bottom-color: var(--color-borde);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.navbar-logo {
  font-family: var(--fuente-titulo);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-texto);
  text-decoration: none;
}

.navbar-logo span {
  color: var(--color-primario);
}

.navbar-links {
  display: none;
  list-style: none;
  gap: 32px;
}

.navbar-links a {
  color: var(--color-texto-suave);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
  text-decoration: none;
}

.navbar-links a:hover {
  color: var(--color-primario);
  text-decoration: none;
}

.navbar-cta {
  display: none;
}

.navbar-hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.navbar-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-texto);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.navbar-hamburger.activo span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar-hamburger.activo span:nth-child(2) {
  opacity: 0;
}
.navbar-hamburger.activo span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.navbar-menu-movil {
  display: none;
  flex-direction: column;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--color-borde);
  gap: 8px;
  background: var(--color-fondo);
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 99;
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
}

.navbar-menu-movil.abierto {
  display: flex;
}

.navbar-menu-movil a {
  color: var(--color-texto);
  font-size: 17px;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 0;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--color-fondo-alt);
  padding: 56px 0 64px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primario-suave);
  color: var(--color-primario);
  border-radius: var(--radio-pill);
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 36px;
  color: var(--color-texto);
  margin-bottom: 20px;
  max-width: 680px;
}

.hero h1 em {
  color: var(--color-primario);
  font-style: normal;
}

.hero-subtitulo {
  font-size: 18px;
  color: var(--color-texto-suave);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* Cuenta atrás */
.cuenta-atras-wrapper {
  margin-bottom: 32px;
}

.cuenta-atras-label {
  font-size: 14px;
  color: var(--color-texto-suave);
  margin-bottom: 10px;
  font-weight: 500;
}

.cuenta-atras-bloques {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.cd-bloque {
  background: #fff;
  border-radius: var(--radio);
  padding: 12px 16px;
  text-align: center;
  min-width: 70px;
  box-shadow: var(--sombra-suave);
}

.cd-numero {
  display: block;
  font-family: var(--fuente-titulo);
  font-size: 32px;
  font-weight: 600;
  color: var(--color-primario);
  line-height: 1;
}

.cd-etiqueta {
  display: block;
  font-size: 11px;
  color: var(--color-texto-suave);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.cuenta-atras-expirada {
  font-size: 15px;
  color: var(--color-texto-suave);
  padding: 12px 0;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-social-proof {
  font-size: 14px;
  color: var(--color-texto-suave);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.hero-social-proof span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-social-proof .sep {
  color: var(--color-borde);
}

/* ============================================================
   BARRA SOCIAL PROOF
   ============================================================ */
.social-proof-bar {
  background: #fff;
  border-bottom: 1px solid var(--color-borde);
  padding: 32px 0;
}

.social-proof-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sp-item {
  text-align: center;
  padding: 16px;
}

.sp-numero {
  display: block;
  font-family: var(--fuente-titulo);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-primario);
  line-height: 1;
}

.sp-etiqueta {
  display: block;
  font-size: 13px;
  color: var(--color-texto-suave);
  margin-top: 6px;
}

/* ============================================================
   SOBRE EL PROFESOR
   ============================================================ */
.sobre-profesor {
  padding: 80px 0;
  background: var(--color-fondo);
}

.sobre-profesor .contenedor {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}

.profesor-foto-wrap {
  flex-shrink: 0;
}

.profesor-foto {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-primario);
  box-shadow: var(--sombra-card);
}

.profesor-foto-placeholder {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-primario-suave);
  border: 4px solid var(--color-primario);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
}

.profesor-info h2 {
  font-size: 28px;
  margin-bottom: 4px;
}

.profesor-titulo {
  color: var(--color-primario);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 16px;
}

.profesor-bio {
  color: var(--color-texto-suave);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.profesor-logros {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.profesor-logros li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
}

.profesor-logros li::before {
  content: "✓";
  color: var(--color-primario);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================================
   TESTIMONIOS
   ============================================================ */
.testimonios {
  padding: 80px 0;
  background: var(--color-fondo-alt);
}

.seccion-titulo {
  text-align: center;
  margin-bottom: 48px;
}

.seccion-titulo h2 {
  font-size: 32px;
  margin-bottom: 12px;
}

.seccion-titulo p {
  color: var(--color-texto-suave);
  font-size: 17px;
  max-width: 540px;
  margin: 0 auto;
}

.testimonios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonio-card {
  background: #fff;
  border-radius: var(--radio);
  padding: 28px;
  box-shadow: var(--sombra-card);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testimonio-estrellas {
  display: flex;
  gap: 4px;
}

.testimonio-estrellas svg {
  width: 18px;
  height: 18px;
  fill: #F5A623;
}

.testimonio-texto {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-texto);
  flex: 1;
}

.testimonio-autor {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonio-foto {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.testimonio-foto-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primario-suave);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.testimonio-nombre {
  font-weight: 600;
  font-size: 14px;
}

.testimonio-cargo {
  font-size: 13px;
  color: var(--color-texto-suave);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  padding: 80px 0;
  background: var(--color-fondo);
}

.faq-lista {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

details.faq-item {
  background: #fff;
  border-radius: var(--radio);
  border: 1px solid var(--color-borde);
  overflow: hidden;
}

details.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  gap: 16px;
  transition: background 0.2s;
}

details.faq-item summary::-webkit-details-marker {
  display: none;
}

details.faq-item summary:hover {
  background: var(--color-primario-suave);
}

details.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-primario);
  flex-shrink: 0;
  line-height: 1;
  transition: transform 0.2s;
}

details.faq-item[open] summary::after {
  content: "−";
}

.faq-respuesta {
  padding: 0 24px 20px;
  color: var(--color-texto-suave);
  font-size: 15px;
  line-height: 1.7;
}

/* ============================================================
   FORMULARIO DE CONTACTO
   ============================================================ */
.formulario {
  padding: 80px 0;
  background: var(--color-fondo-alt);
}

.formulario-inner {
  max-width: 640px;
  margin: 0 auto;
}

.formulario-inner h2 {
  font-size: 32px;
  margin-bottom: 8px;
  text-align: center;
}

.formulario-inner .formulario-subtitulo {
  text-align: center;
  color: var(--color-texto-suave);
  font-size: 16px;
  margin-bottom: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-campo {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-campo label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-texto);
}

.form-campo input,
.form-campo textarea {
  padding: 14px 16px;
  border: 1.5px solid var(--color-borde);
  border-radius: var(--radio-sm);
  font-family: var(--fuente-cuerpo);
  font-size: 15px;
  color: var(--color-texto);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-campo input:focus,
.form-campo textarea:focus {
  border-color: var(--color-primario);
  box-shadow: 0 0 0 3px rgba(224, 123, 84, 0.15);
}

.form-campo input.error,
.form-campo textarea.error {
  border-color: var(--color-error);
}

.form-campo textarea {
  resize: vertical;
  min-height: 100px;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 24px;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primario);
  flex-shrink: 0;
  cursor: pointer;
}

.form-checkbox label {
  font-size: 13px;
  color: var(--color-texto-suave);
  cursor: pointer;
  line-height: 1.5;
}

.form-checkbox label a {
  color: var(--color-primario);
}

.form-acciones {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #25D366;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}

.btn-whatsapp:hover {
  opacity: 0.8;
  text-decoration: none;
}

.formulario-exito {
  text-align: center;
  padding: 48px 32px;
  background: #fff;
  border-radius: var(--radio);
  box-shadow: var(--sombra-card);
}

.formulario-exito .exito-icono {
  font-size: 48px;
  margin-bottom: 16px;
}

.formulario-exito h3 {
  font-size: 22px;
  color: var(--color-exito);
  margin-bottom: 8px;
}

.formulario-exito p {
  color: var(--color-texto-suave);
  font-size: 15px;
}

.formulario-error {
  background: #FFF0F0;
  border: 1px solid #FFCCCC;
  border-radius: var(--radio-sm);
  padding: 12px 16px;
  color: var(--color-error);
  font-size: 14px;
  margin-top: 12px;
}

/* Highlight al scroll desde el bot */
.formulario.highlight {
  animation: highlight-pulse 2s ease-out;
}

@keyframes highlight-pulse {
  0% { background: var(--color-primario-suave); }
  100% { background: var(--color-fondo-alt); }
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--color-texto);
  color: rgba(255, 255, 255, 0.75);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-logo {
  font-family: var(--fuente-titulo);
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: none;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================================
   CHATBOT WIDGET
   ============================================================ */
#chat-trigger {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-primario);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(224, 123, 84, 0.45);
  transition: transform 0.2s, box-shadow 0.2s;
}

#chat-trigger:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(224, 123, 84, 0.55);
}

#chat-trigger svg {
  width: 28px;
  height: 28px;
}

.chat-notif-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 12px;
  height: 12px;
  background: #FF3B3B;
  border-radius: 50%;
  border: 2px solid #fff;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.3); }
}

#chat-window {
  position: fixed;
  bottom: 96px;
  right: 24px;
  z-index: 999;
  width: calc(100vw - 48px);
  max-width: 380px;
  height: 540px;
  max-height: calc(100vh - 120px);
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(44, 36, 32, 0.18);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.2s, transform 0.2s;
}

#chat-window.hidden {
  display: none !important;
}

.chat-header {
  background: var(--color-primario);
  color: #fff;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.chat-header-info {
  flex: 1;
}

.chat-nombre {
  font-size: 14px;
  font-weight: 600;
}

.chat-status {
  font-size: 12px;
  opacity: 0.85;
  display: flex;
  align-items: center;
  gap: 4px;
}

.chat-status::before {
  content: "●";
  font-size: 10px;
  color: #7EFB9A;
}

#chat-minimizar {
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  opacity: 0.85;
  transition: opacity 0.2s;
}

#chat-minimizar:hover {
  opacity: 1;
}

#chat-mensajes {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 12px;
  scroll-behavior: smooth;
}

#chat-mensajes::-webkit-scrollbar {
  width: 4px;
}

#chat-mensajes::-webkit-scrollbar-thumb {
  background: var(--color-borde);
  border-radius: 4px;
}

.msg-bot,
.msg-usuario {
  max-width: 82%;
  font-size: 14px;
  line-height: 1.55;
  padding: 10px 14px;
  border-radius: 16px;
  animation: msg-aparece 0.25s ease-out;
}

@keyframes msg-aparece {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-bot {
  background: var(--color-fondo-alt);
  color: var(--color-texto);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.msg-usuario {
  background: var(--color-primario);
  color: #fff;
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}

/* Indicador de escritura */
.bot-typing {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-fondo-alt);
  padding: 12px 16px;
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.bot-typing span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-texto-suave);
  animation: bounce-dot 1.2s infinite;
}

.bot-typing span:nth-child(2) { animation-delay: 0.2s; }
.bot-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce-dot {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

.bot-typing-search {
  display: inline-flex;
  align-items: center;
  gap: 0;
  background: var(--color-fondo-alt);
  padding: 10px 14px;
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  font-size: 12.5px;
  color: var(--color-texto-suave);
  max-width: 90%;
}

.search-texto {
  font-style: italic;
}

.search-refs {
  color: var(--color-primario);
  font-weight: 600;
}

.search-num {
  display: inline-block;
  min-width: 10px;
  text-align: center;
  transition: transform 0.08s ease;
}

#chat-botones {
  padding: 4px 16px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}

.chat-btn {
  background: #fff;
  border: 1.5px solid var(--color-primario);
  color: var(--color-primario);
  border-radius: var(--radio-pill);
  padding: 9px 16px;
  font-family: var(--fuente-cuerpo);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background 0.2s, color 0.2s;
}

.chat-btn:hover {
  background: var(--color-primario);
  color: #fff;
}

#chat-input-libre {
  padding: 12px 16px;
  border-top: 1px solid var(--color-borde);
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  align-items: center;
}

/* input ya no se oculta */

#chat-input {
  flex: 1;
  border: 1.5px solid var(--color-borde);
  border-radius: var(--radio-pill);
  padding: 10px 16px;
  font-family: var(--fuente-cuerpo);
  font-size: 14px;
  color: var(--color-texto);
  outline: none;
  transition: border-color 0.2s;
}

#chat-input:focus {
  border-color: var(--color-primario);
}

#chat-enviar {
  background: var(--color-primario);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 38px;
  height: 38px;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s, transform 0.15s;
}

#chat-enviar:hover {
  background: #C96A43;
  transform: scale(1.05);
}

/* ============================================================
   MODAL FORMULARIO
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
  display: none !important;
}

.modal-contenido {
  background: #fff;
  border-radius: 16px;
  padding: 32px 28px 28px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.modal-cerrar {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--color-texto-suave);
  line-height: 1;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.2s;
}

.modal-cerrar:hover {
  background: var(--color-fondo-alt);
}

.modal-contenido h3 {
  font-family: var(--fuente-titulo);
  font-size: 22px;
  margin-bottom: 6px;
  padding-right: 32px;
}

.modal-subtitulo {
  color: var(--color-texto-suave);
  font-size: 14px;
  margin-bottom: 20px;
}

.modal-submit {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
}

/* ============================================================
   TABLET ≥ 768px
   ============================================================ */
@media (min-width: 768px) {
  .hero {
    padding: 72px 0 80px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .social-proof-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .sp-item:not(:last-child) {
    border-right: 1px solid var(--color-borde);
  }

  .sobre-profesor .contenedor {
    flex-direction: row;
    align-items: flex-start;
    gap: 56px;
  }

  .form-row.dos-col {
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-copy {
    text-align: right;
  }
}

/* ============================================================
   DESKTOP ≥ 1024px
   ============================================================ */
@media (min-width: 1024px) {
  .hero h1 {
    font-size: 52px;
  }

  .navbar-links {
    display: flex;
  }

  .navbar-cta {
    display: flex;
  }

  .navbar-hamburger {
    display: none;
  }

  .navbar-menu-movil {
    display: none !important;
  }
}

/* Móvil: chat a pantalla completa */
@media (max-width: 480px) {
  #chat-window {
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    bottom: 0;
    right: 0;
    border-radius: 0;
  }

  /* Ocultar trigger cuando el chat está abierto en móvil */
  #chat-window:not(.hidden) ~ #chat-trigger,
  body.chat-abierto #chat-trigger {
    display: none !important;
  }
}