@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,700;1,9..144,400&family=DM+Sans:wght@400;500;600&display=swap');

:root {
  /* Paleta azul/blanco inspirada en logo Filosofía */
  --bg:        #f0f4fa;
  --bg2:       #ffffff;
  --bg3:       #e4ecf7;
  --border:    #c5d4eb;
  --accent:    #1a3a6b;   /* azul oscuro principal */
  --accent2:   #2e6fc4;   /* azul medio */
  --accent3:   #5b9bd5;   /* azul claro */
  --text:      #1a2640;
  --muted:     #5a6e8a;
  --card:      #ffffff;
  --shadow:    rgba(26,58,107,0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--text); font-family: 'DM Sans', sans-serif; font-size: 16px; line-height: 1.75; min-height: 100vh; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex; align-items: center;
  box-shadow: 0 2px 12px var(--shadow);
}
.nav-logo {
  font-family: 'Fraunces', serif;
  font-size: 1.2rem; font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  padding: 0.85rem 1.25rem 0.85rem 0;
  border-right: 1px solid var(--border);
  margin-right: 1rem;
  white-space: nowrap;
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-logo img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.nav-links { display: flex; flex-wrap: wrap; list-style: none; flex: 1; }
.nav-links a {
  display: block; padding: 0.85rem 0.8rem;
  color: var(--muted); text-decoration: none;
  font-size: 0.875rem; font-weight: 500;
  transition: color 0.2s; white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent2); }
.nav-right { display: flex; align-items: center; margin-left: auto; }

/* ── LOGIN BUTTON ── */
.btn-login {
  background: none; border: 1.5px solid var(--border);
  color: var(--muted); font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem; padding: 0.4rem 0.9rem;
  border-radius: 20px; cursor: pointer; transition: all 0.2s;
}
.btn-login:hover { border-color: var(--accent2); color: var(--accent2); }
.btn-login.logged {
  border-color: var(--accent2); color: var(--accent2);
  background: rgba(46,111,196,0.08);
}

/* ── MODAL ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(26,54,107,0.45); backdrop-filter: blur(4px); z-index: 1000; display: none; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: var(--bg2); border: 1px solid var(--border); border-radius: 20px; padding: 2rem; width: 100%; box-shadow: 0 8px 40px var(--shadow); }
.modal h2 { font-family: 'Fraunces', serif; font-size: 1.4rem; margin-bottom: 0.4rem; color: var(--accent); }
.modal > p { color: var(--muted); font-size: 0.85rem; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.78rem; color: var(--muted); margin-bottom: 0.4rem; letter-spacing: 0.05em; text-transform: uppercase; }
.form-group input { width: 100%; background: var(--bg3); border: 1.5px solid var(--border); border-radius: 10px; padding: 0.65rem 0.9rem; color: var(--text); font-family: 'DM Sans', sans-serif; font-size: 0.9rem; outline: none; transition: border-color 0.2s; }
.form-group input:focus { border-color: var(--accent2); }
.btn-submit { width: 100%; background: var(--accent); color: #fff; font-family: 'DM Sans', sans-serif; font-weight: 600; font-size: 0.9rem; border: none; border-radius: 10px; padding: 0.75rem; cursor: pointer; margin-top: 0.5rem; transition: background 0.2s; }
.btn-submit:hover { background: var(--accent2); }
.login-error { color: #c0392b; font-size: 0.82rem; margin-top: 0.5rem; display: none; }

/* ── EDITOR BAR ── */
.editor-bar {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--accent); border-radius: 100px;
  padding: 0.5rem 1.25rem; display: none; align-items: center; gap: 0.6rem;
  z-index: 500; box-shadow: 0 4px 24px rgba(26,58,107,0.3); white-space: nowrap;
}
.editor-bar.active { display: flex; }
.editor-bar > span { font-size: 0.78rem; color: rgba(255,255,255,0.7); margin-right: 0.25rem; }
.editor-btn { background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25); color: #fff; font-family: 'DM Sans', sans-serif; font-size: 0.8rem; padding: 0.3rem 0.75rem; border-radius: 100px; cursor: pointer; transition: all 0.2s; }
.editor-btn:hover { background: rgba(255,255,255,0.25); }
.save-btn { background: #fff !important; color: var(--accent) !important; border-color: #fff !important; font-weight: 600; }
.save-btn:hover { opacity: 0.9; }
.cancel-btn { color: rgba(255,255,255,0.7); }

/* ── EDITING BADGE ── */
.editing-badge { position: fixed; top: 70px; right: 1rem; background: rgba(46,111,196,0.12); border: 1px solid rgba(46,111,196,0.3); color: var(--accent2); font-size: 0.72rem; padding: 0.25rem 0.7rem; border-radius: 100px; display: none; z-index: 400; }
.editing-badge.show { display: block; }

/* ── EDICIÓN VISUAL ── */
.entry-body[contenteditable="true"] { outline: 2px dashed var(--accent3); outline-offset: 10px; border-radius: 4px; min-height: 100px; }
.entry-body[contenteditable="true"]:focus { outline-color: var(--accent2); }

/* ── LAYOUT ── */
.layout { display: grid; grid-template-columns: 1fr 250px; gap: 2.5rem; max-width: 1100px; margin: 0 auto; padding: 2.5rem 2rem 6rem; align-items: start; }
.page-header { margin-bottom: 2rem; padding-bottom: 1.25rem; border-bottom: 2px solid var(--bg3); display: flex; align-items: flex-start; gap: 1.25rem; }
.page-header-logo { width: 80px; height: 80px; object-fit: contain; flex-shrink: 0; }
.page-header-text { flex: 1; }
.page-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent2); margin-bottom: 0.5rem; }
h1 { font-family: 'Fraunces', serif; font-weight: 700; font-size: clamp(1.6rem, 3.5vw, 2.2rem); line-height: 1.2; color: var(--accent); }
.page-date { color: var(--muted); font-size: 0.78rem; margin-top: 0.4rem; }

/* ── CONTENIDO ── */
.entry-body { color: var(--text); }
.entry-body h2, .entry-body h3 { font-family: 'Fraunces', serif; font-weight: 700; color: var(--accent); margin: 2rem 0 0.75rem; line-height: 1.3; }
.entry-body h2 { font-size: 1.4rem; } .entry-body h3 { font-size: 1.15rem; }
.entry-body p { margin-bottom: 1rem; }
.entry-body a { color: var(--accent2); text-decoration: underline; text-decoration-color: rgba(46,111,196,0.3); transition: text-decoration-color 0.2s; }
.entry-body a:hover { text-decoration-color: var(--accent2); }
.entry-body b, .entry-body strong { color: var(--accent); font-weight: 600; }
.entry-body img { max-width: 100%; border-radius: 12px; margin: 1rem 0; }
.entry-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9rem; border-radius: 12px; overflow: hidden; box-shadow: 0 1px 8px var(--shadow); }
.entry-body th, .entry-body td { padding: 0.65rem 1rem; border: 1px solid var(--border); text-align: left; }
.entry-body th { background: var(--accent); color: #fff; font-weight: 600; }
.entry-body tr:nth-child(even) td { background: var(--bg3); }
.entry-body tr:hover td { background: #dceaf7; }

/* ── SIDEBAR ── */
.sidebar { position: sticky; top: 80px; background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; padding: 1.25rem; box-shadow: 0 2px 12px var(--shadow); }
.sidebar-title { font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.75rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); font-weight: 600; }
.sidebar-links { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.sidebar-links a { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.6rem; border-radius: 8px; color: var(--muted); text-decoration: none; font-size: 0.82rem; line-height: 1.4; transition: background 0.15s, color 0.15s; }
.sidebar-links a img { width: 22px; height: 22px; object-fit: contain; flex-shrink: 0; opacity: 0.7; }
.sidebar-links a:hover { background: var(--bg3); color: var(--accent); }
.sidebar-links a:hover img { opacity: 1; }
.sidebar-links a.current { background: rgba(46,111,196,0.1); color: var(--accent2); font-weight: 500; }
.sidebar-links a.current img { opacity: 1; }

/* ── HERO (index) ── */
.hero { padding: 4rem 2rem 3rem; max-width: 960px; margin: 0 auto; display: flex; align-items: center; gap: 3rem; }
.hero-text { flex: 1; }
.hero-logo { width: 150px; height: 150px; object-fit: contain; flex-shrink: 0; filter: drop-shadow(0 4px 16px rgba(26,58,107,0.15)); }
.hero-eyebrow { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent2); margin-bottom: 1rem; }
.hero h1 { font-family: 'Fraunces', serif; font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 700; line-height: 1.1; margin-bottom: 1rem; color: var(--accent); }
.hero h1 em { font-style: italic; color: var(--accent2); }
.hero-desc { font-size: 1.05rem; color: var(--muted); max-width: 520px; margin-bottom: 2rem; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.badge { background: var(--bg3); border: 1.5px solid var(--border); border-radius: 100px; padding: 0.3rem 0.85rem; font-size: 0.8rem; color: var(--muted); }
.badge.hot { border-color: var(--accent2); color: var(--accent2); background: rgba(46,111,196,0.08); font-weight: 500; }

/* ── GRID DE SECCIONES ── */
.sections-wrap { max-width: 1100px; margin: 0 auto; padding: 0 2rem 5rem; }
.sections-title { font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 1.5rem; padding-bottom: 0.75rem; border-bottom: 2px solid var(--bg3); font-weight: 600; }
.sections-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.section-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: 16px; padding: 1.25rem 1.25rem 1.25rem 1rem;
  text-decoration: none; display: flex; align-items: center; gap: 1rem;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.15s;
  box-shadow: 0 1px 6px var(--shadow);
}
.section-card:hover { box-shadow: 0 4px 20px rgba(46,111,196,0.15); border-color: var(--accent3); transform: translateY(-2px); }
.section-card img { width: 60px; height: 60px; object-fit: contain; flex-shrink: 0; }
.card-info { flex: 1; min-width: 0; }
.card-num { font-family: 'Fraunces', serif; font-size: 0.78rem; color: var(--accent3); margin-bottom: 0.2rem; font-style: italic; }
.card-title { font-size: 0.9rem; font-weight: 600; color: var(--accent); line-height: 1.35; }

/* ── FOOTER ── */
footer { border-top: 1px solid var(--border); background: var(--bg2); padding: 2rem; text-align: center; color: var(--muted); font-size: 0.82rem; }
footer a { color: var(--accent2); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ── TOAST ── */
.toast { position: fixed; bottom: 5rem; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; padding: 0.5rem 1.2rem; border-radius: 100px; font-size: 0.82rem; z-index: 600; pointer-events: none; animation: fadeup 0.2s ease; box-shadow: 0 4px 16px rgba(26,58,107,0.25); }
@keyframes fadeup { from { opacity:0; transform: translateX(-50%) translateY(6px); } to { opacity:1; transform: translateX(-50%) translateY(0); } }

@media (max-width: 900px) {
  .hero { flex-direction: column; align-items: flex-start; gap: 1.5rem; padding: 2.5rem 1.5rem 2rem; }
  .hero-logo { width: 100px; height: 100px; }
}
@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; padding: 1.5rem 1rem 4rem; }
  .sidebar { display: none; }
  nav { padding: 0 0.75rem; flex-wrap: nowrap; }
  .nav-logo { font-size: 0.95rem; padding: 0.75rem 0.75rem 0.75rem 0; margin-right: 0.5rem; }
  .nav-logo img { width: 28px; height: 28px; }
  .nav-links { display: none; }
  .nav-right { gap: 0.3rem; }
  .sections-wrap { padding: 0 1rem 3rem; }
  .sections-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .section-card { padding: 1rem 0.75rem; }
  .section-card img { width: 44px; height: 44px; }
  .page-header { flex-direction: column; gap: 0.75rem; }
  .page-header-logo { width: 60px; height: 60px; }
  h1 { font-size: 1.5rem; }
  .hero h1 { font-size: clamp(1.8rem, 7vw, 3rem); }
  .hero-desc { font-size: 0.95rem; }
}
@media (max-width: 480px) {
  .sections-grid { grid-template-columns: 1fr; }
  .hero { padding: 2rem 1rem 1.5rem; }
  nav { padding: 0 0.5rem; }
  footer { padding: 1.5rem 1rem; font-size: 0.78rem; }
}

/* ── ANIMACIONES GENERALES ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

/* Entrada del hero */
.hero-text { animation: fadeInUp 0.55s ease both; }
.hero-logo  { animation: scaleIn  0.55s ease 0.1s both; }

/* Entrada de las tarjetas del grid con stagger */
.section-card { animation: fadeInUp 0.4s ease both; }
.section-card:nth-child(1)  { animation-delay: 0.04s; }
.section-card:nth-child(2)  { animation-delay: 0.08s; }
.section-card:nth-child(3)  { animation-delay: 0.12s; }
.section-card:nth-child(4)  { animation-delay: 0.16s; }
.section-card:nth-child(5)  { animation-delay: 0.20s; }
.section-card:nth-child(6)  { animation-delay: 0.24s; }
.section-card:nth-child(7)  { animation-delay: 0.28s; }
.section-card:nth-child(8)  { animation-delay: 0.32s; }
.section-card:nth-child(9)  { animation-delay: 0.36s; }
.section-card:nth-child(10) { animation-delay: 0.40s; }
.section-card:nth-child(n+11) { animation-delay: 0.44s; }

/* Entrada del contenido de página */
.page-header  { animation: fadeInUp 0.45s ease both; }
.entry-body   { animation: fadeInUp 0.45s ease 0.1s both; }

/* Animación de modales */
.modal-overlay.open .modal {
  animation: scaleIn 0.22s cubic-bezier(0.34,1.56,0.64,1) both;
}

  to   { transform: translateY(0);    opacity: 1; }
}

/* Hover en nav links — sin subrayado */
.nav-links a { position: relative; }

/* Hover en logo del nav */
.nav-logo { transition: opacity 0.2s; }
.nav-logo:hover { opacity: 0.8; }

/* Transición suave en tarjetas */
.section-card { transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s; }

/* ── MENÚ HAMBURGUESA ── */
.nav-hamburger {
  display: none;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.2s;
  margin-left: 0.5rem;
}
.nav-hamburger:hover { border-color: var(--accent2); }
.nav-hamburger span {
  display: block;
  width: 18px; height: 2px;
  background: var(--muted);
  border-radius: 2px;
  transition: background 0.2s;
}
.nav-hamburger:hover span { background: var(--accent2); }

/* Drawer del menú móvil */
.nav-drawer-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(26,38,64,0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
}
.nav-drawer-overlay.open { display: block; animation: fadeIn 0.2s ease both; }
.nav-drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(280px, 85vw);
  height: 100vh;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  padding: 1.5rem 1.25rem;
  z-index: 201;
  display: flex; flex-direction: column; gap: 0;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
}
.nav-drawer-overlay.open .nav-drawer { transform: translateX(0); }
.nav-drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.5rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.nav-drawer-title {
  font-family: 'Fraunces', serif;
  font-size: 1.1rem; font-weight: 700;
  color: var(--accent);
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-drawer-close {
  background: none; border: none;
  color: var(--muted); font-size: 1.2rem;
  cursor: pointer; padding: 0.2rem;
  border-radius: 6px; transition: background 0.15s;
}
.nav-drawer-close:hover { background: var(--bg3); }
.nav-drawer-links { list-style: none; display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-drawer-links a {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 0.75rem;
  color: var(--text); text-decoration: none;
  font-size: 0.95rem; font-weight: 500;
  border-radius: 10px;
  transition: background 0.15s, color 0.15s;
}
.nav-drawer-links a:hover, .nav-drawer-links a.active {
  background: var(--bg3); color: var(--accent2);
}
.nav-drawer-links a .link-icon { font-size: 1.1rem; width: 24px; text-align: center; }

/* ── REGISTRO HORIZONTAL ── */
.reg-layout {
  display: grid;
  grid-template-columns: 100px 1fr 148px;
  gap: 1rem;
  align-items: start;
}
.reg-avatar-col {
  display: flex; flex-direction: column; align-items: center;
  padding-top: 1.25rem;
  width: 100px;
}
.reg-fields-col { min-width: 0; }
.reg-picker-col { min-width: 0; width: 148px; }
.reg-picker-col .avatar-opt { width: 40px !important; height: 40px !important; font-size: 1.25rem !important; }
#reg-avatar-picker, #edit-avatar-picker { display: grid !important; grid-template-columns: repeat(3, 1fr) !important; gap: .3rem !important; }

/* ── Móvil: avatar grande izquierda, picker más grande derecha ── */
@media (max-width: 600px) {
  /* Layout: avatar preview | picker — en una fila, campos debajo */
  .reg-layout {
    grid-template-columns: 80px 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 0.6rem !important;
  }
  /* Avatar preview: columna 1, fila 1 — grande y centrado */
  .reg-avatar-col {
    grid-column: 1 !important;
    grid-row: 1 !important;
    flex-direction: column !important;
    align-items: center !important;
    padding-top: 0 !important;
    width: 80px !important;
    justify-content: flex-start !important;
  }
  .reg-avatar-col > div:first-child {
    width: 72px !important;
    height: 72px !important;
    font-size: 2.8rem !important;
  }
  .reg-avatar-col > p { font-size: .68rem !important; margin-top: .2rem !important; }
  /* Picker: columna 2, fila 1 — más grande */
  .reg-picker-col {
    grid-column: 2 !important;
    grid-row: 1 !important;
    width: 100% !important;
  }
  .reg-picker-col > p { font-size: .68rem !important; margin-bottom: .2rem !important; }
  #reg-avatar-picker, #edit-avatar-picker {
    grid-template-columns: repeat(6, 1fr) !important;
    gap: 0.25rem !important;
  }
  .reg-picker-col .avatar-opt,
  #reg-avatar-picker .avatar-opt,
  #edit-avatar-picker .avatar-opt {
    width: 34px !important;
    height: 34px !important;
    font-size: 1rem !important;
  }
  /* Campos: columna 1-2 (full width), fila 2 */
  .reg-fields-col {
    grid-column: 1 / -1 !important;
    grid-row: 2 !important;
    width: 100% !important;
  }
}

@media (max-width: 768px) {
  /* Punto 1: mostrar hamburguesa */
  .nav-hamburger { display: flex; }

  /* Punto 4: modal centrado verticalmente, no desde abajo */
  .modal-overlay { align-items: center; padding: 1rem; }
  .modal {
    border-radius: 16px !important;
    position: relative !important;
    bottom: auto !important;
    left: auto !important;
    right: auto !important;
    max-height: 85vh;
    overflow-y: auto;
    /* Evitar que el scroll del modal suba con el teclado */
    transform: none !important;
  }
}

/* Punto 4: en móvil pequeño también centrado */
@media (max-width: 600px) {
  .modal-overlay { align-items: center; padding: 0.75rem; }
  .modal {
    border-radius: 14px !important;
    position: relative !important;
    bottom: auto !important;
    max-width: 100% !important;
    max-height: 88vh;
    /* inputmode en inputs para no forzar teclado hasta click */
  }
  /* Punto 4: animar desde el centro, no desde abajo */
  .modal-overlay.open .modal {
    animation: scaleIn 0.22s cubic-bezier(0.34,1.56,0.64,1) both !important;
  }
}

/* Modal perfil en modo edición — ancho ampliado */
#perfil-modal-box.editing {
  max-width: 640px !important;
  width: min(640px, 95vw) !important;
}

/* ─── Botones de navegación (auth) ──────────────────────── */
#btn-student-login {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: .8rem;
  padding: .35rem .75rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: .3rem;
  white-space: nowrap;
  max-width: 140px;
  height: 2rem;
  overflow: hidden;
  flex-shrink: 0;
  line-height: 1;
}
#btn-student-login:hover { border-color: var(--accent2); color: var(--accent2); }

#btn-avance, #btn-perfil {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: .8rem;
  padding: .4rem .85rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
#btn-avance:hover, #btn-perfil:hover { border-color: var(--accent2); color: var(--accent2); }

.tab-btn { background: none; border: none; padding: .6rem 1.1rem; font-family: 'DM Sans', sans-serif; font-size: .9rem; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .2s; }
.tab-btn.active { color: var(--accent2); border-bottom-color: var(--accent2); font-weight: 600; }

.avance-item { display: flex; align-items: center; gap: .75rem; padding: .55rem .75rem; border-radius: 10px; cursor: pointer; transition: background .15s; border: 1.5px solid var(--border); background: var(--bg2); }
.avance-item:hover { background: var(--bg3); }
.avance-item.done { background: rgba(46,111,196,.07); border-color: var(--accent3); }
.avance-item input { width: 18px; height: 18px; accent-color: var(--accent2); cursor: pointer; flex-shrink: 0; }
.avance-item span { font-size: .88rem; color: var(--text); }
.avance-item.done span { color: var(--accent2); }

.social-btn { display: flex; align-items: center; justify-content: center; gap: .4rem; padding: .55rem; border: 1.5px solid var(--border); border-radius: 10px; background: var(--bg2); cursor: pointer; font-family: 'DM Sans', sans-serif; font-size: .82rem; color: var(--text); transition: background .2s; width: 100%; }
.social-btn:hover { background: var(--bg3); }

@media (max-width: 600px) {
  #btn-student-login { max-width: 110px; font-size: .75rem; padding: .35rem .6rem; }
  #btn-avance, #btn-perfil { font-size: .75rem; padding: .35rem .6rem; }
}

/* ═══════════════════════════════════════════════════════════
   CORRECCIONES MÓVIL
   ═══════════════════════════════════════════════════════════ */

/* 1. Modales SIEMPRE centrados en pantalla (nunca desde abajo) */
.modal-overlay {
  align-items: center !important;
  padding: 1rem;
}
.modal {
  position: relative !important;
  bottom: auto !important;
  left: auto !important;
  right: auto !important;
  border-radius: 16px !important;
}
@media (max-width: 600px) {
  .modal-overlay {
    padding: 0.75rem !important;
    align-items: center !important;
  }
  .modal {
    border-radius: 14px !important;
    max-width: calc(100vw - 1.5rem) !important;
    overflow: visible !important;
    animation: scaleIn 0.22s cubic-bezier(0.34,1.56,0.64,1) both !important;
  }
  .modal-overlay.open .modal {
    animation: scaleIn 0.22s cubic-bezier(0.34,1.56,0.64,1) both !important;
  }
}

/* 2. Logos de section-cards: no se alargan, mantienen proporción cuadrada */
@media (max-width: 600px) {
  .section-card {
    align-items: center;
  }
  .section-card img {
    width: 40px !important;
    height: 40px !important;
    object-fit: contain !important;
    flex-shrink: 0 !important;
    aspect-ratio: 1 / 1;
  }
  .page-header-logo {
    width: 52px !important;
    height: 52px !important;
    object-fit: contain !important;
    aspect-ratio: 1 / 1;
  }
}

/* 4. Modales con scroll interno: contenido cabe en pantalla sin scroll externo */
/* Tabs sticky siempre visibles sobre contenido scrolleable */
#student-modal-box > div:first-child,
#perfil-modal-box > div:first-child {
  position: sticky !important;
  top: 0 !important;
  z-index: 50;
  background: var(--bg2) !important;
}

/* ── z-index stack de modales: overlay=1000, modal apilado=1100 ── */
/* Avance es lista larga — mantiene scroll propio */
#avance-modal > .modal {
  overflow-y: auto;
  max-height: 88vh;
}

/* ═══════════════════════════════════════════════════════════
   SIN SCROLL EN MODALES — todo cabe en pantalla
   ═══════════════════════════════════════════════════════════ */

/* Todos los modales: altura ajustada al contenido, sin scroll */
.modal {
  max-height: 92vh;
  overflow: visible;
}

/* Los scroll containers previos los desactivamos */
#student-modal-box,
#perfil-modal-box {
  overflow: visible !important;
  max-height: none !important;
}

/* Reducir espacios internos en móvil para que todo quepa */
@media (max-width: 600px) {
  .modal {
    padding: 1.25rem !important;
  }
  .form-group {
    margin-bottom: 0.5rem !important;
  }
  .form-group label {
    font-size: 0.78rem !important;
    margin-bottom: 0.2rem !important;
  }
  .form-group input,
  .form-group select {
    padding: 0.5rem 0.75rem !important;
    font-size: 0.88rem !important;
  }
  .btn-submit {
    padding: 0.55rem 1rem !important;
    font-size: 0.88rem !important;
  }
  /* Tab bar sticky: reducir padding vertical */
  .tab-btn {
    padding: 0.45rem 0.85rem !important;
    font-size: 0.85rem !important;
  }

  /* Reducir margen del sticky header */
  #student-modal-box > div:first-child,
  #perfil-modal-box > div:first-child {
    margin-left: -1.25rem !important;
    margin-right: -1.25rem !important;
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
    margin-bottom: 0.85rem !important;
  }
  /* Tarjeta de avatar en perfil más compacta */
  #perfil-avatar-display {
    width: 48px !important;
    height: 48px !important;
    font-size: 1.5rem !important;
  }
  /* Avance: lista con scroll propio si es muy larga */
  #avance-modal > .modal {
    max-height: 88vh !important;
    overflow: hidden !important;
  }
  #avance-list {
    max-height: 60vh;
    overflow-y: auto;
  }
}