/* =========================================================================
   Profesor Guillermo — Sistema de diseño
   Paleta: azul institucional + amarillo acento (estilo pizarra + tiza)
   Tipografía: Poppins (titulares, redondeada y cercana) + Inter (cuerpo)
   ========================================================================= */

/* Transición nativa entre páginas (navegador → navegador, sin recarga en
   blanco): en vez del salto brusco de antes, hace un fundido corto entre
   la página que se va y la que llega — por ejemplo, al volver de un
   examen a la Biblioteca de Exámenes. Es 100% progresivo: en navegadores
   que todavía no lo soportan (Safari, Firefox) esta regla se ignora y la
   navegación sigue funcionando exactamente igual que siempre, sin errores. */
@view-transition {
  navigation: auto;
}
::view-transition-group(root) {
  animation-duration: 140ms;
  animation-timing-function: ease-out;
}
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(root) {
    animation: none !important;
  }
}

:root {
  --blue-900: #0d2b5e;
  --blue-800: #123a7a;
  --blue-700: #1a4894;
  --blue-600: #2158b8;
  --blue-100: #e8f0ff;
  --blue-50: #f4f8ff;

  --yellow-500: #ffc72c;
  --yellow-600: #f2ac00;
  --yellow-100: #fff6dd;

  --ink-900: #0f172a;
  --ink-700: #33415c;
  --ink-500: #64748b;
  --ink-200: #dde5f0;
  --ink-100: #eef2f8;

  --green-600: #1e9e5a;
  --green-100: #e3f7ec;
  --red-600: #d1483f;
  --red-100: #fdeceb;

  --white: #ffffff;
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --shadow-card: 0 6px 20px rgba(13, 43, 94, 0.08);
  --shadow-pop: 0 14px 40px rgba(13, 43, 94, 0.18);

  --font-display: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--blue-50);
  line-height: 1.55;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--blue-900);
}
p {
  margin: 0 0 1em;
  color: var(--ink-700);
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
button {
  font-family: var(--font-body);
  cursor: pointer;
}
:focus-visible {
  outline: 3px solid var(--yellow-500);
  outline-offset: 2px;
}
.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}
.hidden {
  display: none !important;
}

/* --------------------------- Buttons --------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--yellow-500);
  color: var(--blue-900);
  box-shadow: 0 8px 18px rgba(255, 199, 44, 0.45);
}
.btn-primary:hover {
  background: var(--yellow-600);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--blue-100);
  color: var(--white);
}
.btn-outline-dark {
  background: transparent;
  border: 2px solid var(--blue-700);
  color: var(--blue-800);
}
.btn-blue {
  background: var(--blue-700);
  color: var(--white);
}
.btn-blue:hover {
  background: var(--blue-800);
}
.btn-ghost {
  background: var(--ink-100);
  color: var(--blue-900);
}
.btn-danger {
  background: var(--red-100);
  color: var(--red-600);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}
.btn-block {
  width: 100%;
}
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}
.btn-whatsapp {
  background: #25d366;
  color: #fff;
}

/* --------------------------- Header --------------------------- */
.site-header {
  background: var(--blue-900);
  position: sticky;
  top: 0;
  z-index: 40;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--yellow-500);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--white);
  flex-shrink: 0;
  overflow: hidden;
}
.brand-badge svg {
  width: 26px;
  height: 26px;
}
.brand-badge img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.brand-name {
  font-family: var(--font-display);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.15;
}
.brand-name span {
  display: block;
  color: var(--yellow-500);
  font-size: 1.05rem;
}
.main-nav {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  color: var(--blue-100);
  font-weight: 500;
  font-size: 0.95rem;
}
.main-nav a:hover {
  color: var(--white);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.header-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.3;
}
.header-user-info strong {
  color: #fff;
  font-size: 0.9rem;
}
.header-user-info span {
  color: var(--blue-100);
  font-size: 0.75rem;
}
.auth-modal-box {
  max-width: 440px;
  position: relative;
}
.auth-modal-box .modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
}

/* --------------------------- Hero --------------------------- */
.hero {
  background: linear-gradient(180deg, var(--blue-900) 0%, var(--blue-800) 55%, var(--blue-700) 100%);
  padding: 64px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--yellow-500);
  font-weight: 600;
  margin-bottom: 18px;
  font-size: 0.95rem;
}
.hero h1 {
  color: var(--white);
  font-size: clamp(2.1rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 18px;
}
.hero h1 .highlight {
  position: relative;
  white-space: nowrap;
}
.hero h1 .highlight::after {
  content: "";
  position: absolute;
  left: -4px;
  right: -4px;
  bottom: 4px;
  height: 0.4em;
  background: var(--yellow-500);
  z-index: -1;
  border-radius: 3px;
  opacity: 0.9;
}
.hero p.lead {
  color: var(--blue-100);
  font-size: 1.08rem;
  max-width: 46ch;
  margin-bottom: 26px;
}

/* Checklist de beneficios, en dos columnas (estilo "landing con tics"). */
.hero-checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 28px;
  margin: 0 0 32px;
  max-width: 640px;
}
.hero-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--blue-100);
  font-weight: 500;
  font-size: 0.96rem;
  line-height: 1.4;
}
.hero-checklist .check-ico {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--yellow-500);
  color: var(--blue-900);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  margin-top: 2px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-art {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  min-height: 380px;
}
.hero-art .chalkboard {
  background: #0e3a2f;
  border: 10px solid #b98a3e;
  border-radius: 10px;
  padding: 26px 22px;
  color: #eafff2;
  font-family: var(--font-display);
  font-size: 1.15rem;
  transform: rotate(-2deg);
  max-width: 260px;
}
.hero-art .hero-photo {
  width: 100%;
  max-width: 420px;
  height: auto;
  display: block;
  filter: drop-shadow(0 22px 34px rgba(5, 16, 41, 0.45));
}
.hero-art .avatar-badge {
  margin-top: -22px;
  background: var(--yellow-500);
  color: var(--blue-900);
  font-family: var(--font-display);
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
  z-index: 2;
}
@media (max-width: 720px) {
  .hero-checklist {
    grid-template-columns: 1fr;
  }
}

/* --------------------------- Explora / categorías --------------------------- */
.section {
  padding: 64px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 36px;
}
.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-head h2 .chev {
  color: var(--yellow-600);
}
.section-head p {
  max-width: 52ch;
  margin: 8px auto 0;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.category-card {
  background: var(--white);
  border-radius: var(--radius-m);
  padding: 22px 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--cat-color, var(--blue-600));
  transition: transform 0.15s ease;
}
.category-card:hover {
  transform: translateY(-4px);
}
.category-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--cat-color, var(--blue-600));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 1.3rem;
}
.category-card h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.category-go {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--blue-700);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

/* --------------------------- Beneficios strip --------------------------- */
.benefits-strip {
  background: var(--white);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-card);
  padding: 30px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.benefit-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.benefit-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--blue-700);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.benefit-item h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.benefit-item p {
  font-size: 0.85rem;
  margin: 0;
}

/* --------------------------- Materials grid / cards --------------------------- */
.materials-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.materials-search {
  position: relative;
  max-width: 360px;
  width: 100%;
  margin-bottom: 20px;
}
.materials-search::before {
  content: "🔍";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  opacity: 0.55;
  pointer-events: none;
}
.materials-search input {
  width: 100%;
  padding: 11px 16px 11px 42px;
  border-radius: 999px;
  border: 1.5px solid var(--ink-200);
  font-family: var(--font-body);
  font-size: 0.9rem;
  background: #fff;
}
.materials-search input:focus { outline: none; border-color: var(--blue-600); }
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.material-card {
  background: var(--white);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}
.material-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-pop);
}
.material-thumb {
  height: 130px;
  background:
    radial-gradient(circle at 85% 15%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0) 55%),
    linear-gradient(135deg, var(--cat-color, var(--blue-600)), var(--blue-900));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  position: relative;
}
.material-thumb-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
}
.material-type-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(13, 43, 94, 0.55);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(2px);
}
.material-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.material-body h3 {
  font-size: 0.98rem;
  margin: 0;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  width: fit-content;
}
.badge-blue { background: var(--blue-100); color: var(--blue-800); }
.badge-green { background: var(--green-100); color: var(--green-600); }
.badge-red { background: var(--red-100); color: var(--red-600); }
.badge-yellow { background: var(--yellow-100); color: var(--yellow-600); }
.material-meta {
  font-size: 0.8rem;
  color: var(--ink-500);
}
.material-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.free-ribbon {
  position: absolute;
  top: 10px;
  left: -6px;
  background: var(--green-600, #16a34a);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px 4px 12px;
  border-radius: 0 999px 999px 0;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--ink-700);
  cursor: pointer;
}
.checkbox-row input[type="checkbox"] {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.material-lock {
  position: absolute;
  inset: 0;
  background: rgba(13, 43, 94, 0.72);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 16px;
  font-size: 0.85rem;
}

/* --------------------------- Stats / CTA --------------------------- */
.stats-band {
  background: var(--blue-900);
  padding: 46px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  gap: 20px;
}
.stats-grid strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--yellow-500);
}
.stats-grid span {
  color: var(--blue-100);
  font-size: 0.9rem;
}
.cta-band {
  background: var(--yellow-500);
  border-radius: var(--radius-l);
  padding: 46px;
  text-align: center;
  margin: 0 24px;
}
.cta-band h2 {
  margin-bottom: 10px;
}
.cta-band p {
  color: var(--blue-800);
  max-width: 52ch;
  margin: 0 auto 22px;
}

/* --------------------------- Footer --------------------------- */
.site-footer {
  background: var(--blue-900);
  color: var(--blue-100);
  padding: 46px 0 24px;
  margin-top: 64px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--ink-200);
  flex-wrap: wrap;
  gap: 8px;
}
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #25d366;
  color: #fff;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(0,0,0,0.25);
  z-index: 50;
  font-size: 1.5rem;
}

/* --------------------------- Auth pages --------------------------- */
.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.auth-visual {
  background: linear-gradient(160deg, var(--blue-900), var(--blue-700));
  color: #fff;
  padding: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
}
.auth-visual ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.auth-visual li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--blue-100);
}
.auth-form-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.auth-card {
  width: 100%;
  max-width: 400px;
}
.auth-tabs {
  display: flex;
  background: var(--ink-100);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 28px;
}
.auth-tab {
  flex: 1;
  text-align: center;
  padding: 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  background: transparent;
  color: var(--ink-500);
}
.auth-tab.active {
  background: var(--white);
  color: var(--blue-800);
  box-shadow: var(--shadow-card);
}
.field {
  margin-bottom: 16px;
}
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-700);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--ink-200);
  border-radius: var(--radius-s);
  font-size: 0.95rem;
  font-family: var(--font-body);
  background: var(--white);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue-600);
  outline: none;
}
.field-hint {
  font-size: 0.78rem;
  color: var(--ink-500);
  margin-top: 4px;
}
.form-msg {
  padding: 10px 14px;
  border-radius: var(--radius-s);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.form-msg.error { background: var(--red-100); color: var(--red-600); }
.form-msg.success { background: var(--green-100); color: var(--green-600); }
.auth-switch {
  text-align: center;
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--ink-500);
}
.auth-switch a {
  color: var(--blue-700);
  font-weight: 600;
}

/* --------------------------- Dashboard shell --------------------------- */
.dash-shell {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}
.dash-sidebar {
  background: var(--blue-900);
  color: #fff;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.dash-sidebar .brand {
  margin-bottom: 26px;
  padding: 0 6px;
}
.dash-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-s);
  color: var(--blue-100);
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 4px;
}
.dash-nav a:hover {
  background: rgba(255,255,255,0.08);
}
.dash-nav a.active {
  background: var(--yellow-500);
  color: var(--blue-900);
  font-weight: 700;
}
.dash-sidebar .logout-link {
  margin-top: auto;
  color: var(--blue-100);
  opacity: 0.8;
}
.dash-main {
  padding: 32px 36px;
  max-width: 1100px;
}
.dash-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 26px;
  gap: 16px;
  flex-wrap: wrap;
}
.dash-topbar h1 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.membership-card {
  border-radius: var(--radius-l);
  padding: 26px 30px;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-card);
}
.membership-card.active { background: linear-gradient(120deg, #1a7a4a, #16a34a); }
.membership-card.expired { background: linear-gradient(120deg, #7a1a1a, #d1483f); }
.membership-card.none { background: linear-gradient(120deg, var(--blue-800), var(--blue-600)); }
.membership-card .days {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
}
.membership-card .days small {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.85;
  margin-top: 4px;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius-m);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
}
.stat-card strong {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--blue-800);
  display: block;
}
.stat-card span {
  font-size: 0.82rem;
  color: var(--ink-500);
}

.panel {
  background: #fff;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 24px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}
.panel-head h2 {
  font-size: 1.1rem;
  margin: 0;
}

.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 2px solid var(--ink-100);
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.tab-btn {
  background: none;
  border: none;
  padding: 10px 18px;
  font-weight: 600;
  color: var(--ink-500);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-size: 0.92rem;
}
.tab-btn.active {
  color: var(--blue-800);
  border-color: var(--yellow-500);
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th {
  text-align: left;
  color: var(--ink-500);
  font-weight: 600;
  padding: 10px 12px;
  border-bottom: 2px solid var(--ink-100);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--ink-100);
  vertical-align: middle;
}
.data-table tr:last-child td {
  border-bottom: none;
}

/* --------------------------- Modal --------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 43, 94, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-box {
  background: #fff;
  border-radius: var(--radius-l);
  padding: 28px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-pop);
}
.modal-box.wide {
  max-width: 760px;
}
.modal-box-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.modal-close {
  background: var(--ink-100);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.1rem;
  color: var(--ink-700);
}

/* --------------------------- Question builder (admin) --------------------------- */
.question-block {
  border: 1.5px solid var(--ink-200);
  border-radius: var(--radius-s);
  padding: 16px;
  margin-bottom: 14px;
  position: relative;
}
.question-block .q-num {
  font-weight: 700;
  color: var(--blue-800);
  margin-bottom: 10px;
  display: block;
}
.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.option-row input[type="text"] {
  flex: 1;
}
.remove-q {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--red-100);
  color: var(--red-600);
  border: none;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  font-size: 0.85rem;
}

/* --------------------------- Exam viewer --------------------------- */
.exam-header {
  background: var(--blue-900);
  color: #fff;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 20;
}
.exam-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.exam-progress-bar {
  height: 8px;
  background: var(--blue-700);
  border-radius: 999px;
  overflow: hidden;
  width: 200px;
}
.exam-progress-bar > div {
  height: 100%;
  background: var(--yellow-500);
  width: 0%;
  transition: width 0.2s ease;
}
.timer-pill {
  background: var(--blue-700);
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 700;
  font-family: var(--font-display);
}
.exam-question {
  background: #fff;
  border-radius: var(--radius-m);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
}
.exam-question h3 {
  font-size: 1rem;
  margin-bottom: 16px;
}
.exam-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid var(--ink-200);
  border-radius: var(--radius-s);
  margin-bottom: 10px;
  cursor: pointer;
}
.exam-option:hover {
  border-color: var(--blue-600);
}
.exam-option.selected {
  border-color: var(--blue-700);
  background: var(--blue-100);
}
.exam-option.correct {
  border-color: var(--green-600);
  background: var(--green-100);
}
.exam-option.incorrect {
  border-color: var(--red-600);
  background: var(--red-100);
}
.ai-explain-btn {
  display: inline-block;
  margin-top: 8px;
  background: var(--blue-100);
  color: var(--blue-800);
  border: none;
  border-radius: var(--radius-s);
  padding: 9px 16px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
}
.ai-explain-btn:hover:not(:disabled) {
  background: var(--blue-600);
  color: #fff;
}
.ai-explain-btn:disabled {
  opacity: 0.7;
  cursor: wait;
}
.ai-explanation {
  margin-top: 12px;
  background: var(--blue-50);
  border: 1.5px solid var(--blue-100);
  border-radius: var(--radius-s);
  padding: 14px 16px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--ink-700);
}
.ai-explanation strong {
  display: block;
  color: var(--blue-800);
  margin-bottom: 6px;
}
.ai-explanation p {
  margin: 0;
}
.ai-explanation .ai-error {
  color: #b3261e;
}
.ai-explanation .ai-loading {
  margin: 0;
  color: var(--ink-500);
}
.exam-result-card {
  background: #fff;
  border-radius: var(--radius-l);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-pop);
  max-width: 480px;
  margin: 60px auto;
}
.exam-result-card .score-big {
  font-family: var(--font-display);
  font-size: 3.2rem;
  color: var(--blue-800);
  font-weight: 700;
}

/* --------------------------- Access lock page --------------------------- */
.lock-screen {
  max-width: 520px;
  margin: 80px auto;
  background: #fff;
  border-radius: var(--radius-l);
  padding: 44px;
  text-align: center;
  box-shadow: var(--shadow-pop);
}
.lock-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--red-100);
  color: var(--red-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 18px;
}

/* --------------------------- Panel: hub de secciones --------------------------- */
.sector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.sector-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-m);
  padding: 22px 20px;
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--sector-color, var(--blue-600));
  display: flex;
  flex-direction: column;
  min-height: 168px;
  transition: transform 0.12s ease;
  -webkit-tap-highlight-color: transparent;
  will-change: transform;
}
.sector-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-pop);
}
.sector-card:active {
  transform: scale(0.97);
  transition: transform 0.06s ease;
}
.sector-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--sector-color, var(--blue-600));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 12px;
}
.sector-card h3 {
  font-size: 1rem;
  margin: 0 0 6px;
}
.sector-card p {
  font-size: 0.82rem;
  color: var(--ink-500);
  margin: 0 0 14px;
  flex-grow: 1;
}
.sector-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sector-color, var(--blue-700));
}
.sector-card.locked { opacity: 0.72; cursor: pointer; }
.sector-card.locked .sector-link { color: var(--ink-500); }
.sector-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 3px 9px;
  border-radius: 20px;
  text-transform: uppercase;
}
.sector-badge.ready { background: var(--green-100); color: var(--green-600); }
.sector-badge.soon { background: var(--ink-100); color: var(--ink-500); }
.sector-badge.here { background: var(--blue-100); color: var(--blue-800); }
.sector-card.active-here { cursor: default; }
.sector-card.active-here:hover { transform: none; }

/* --------------------------- Planes (Mi membresía) --------------------------- */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.plan-card {
  background: var(--blue-50);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}
.plan-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue-700);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.plan-price {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--blue-900);
  margin: 4px 0 2px;
}
.plan-days {
  font-size: 0.82rem;
  color: var(--ink-500);
}

/* --------------------------- Filtros (Exámenes) --------------------------- */
.filter-bar {
  background: var(--blue-50);
  border-radius: var(--radius-m);
  padding: 18px 20px;
  margin-bottom: 10px;
}
.filter-search {
  position: relative;
  margin-bottom: 14px;
}
.filter-search::before {
  content: "🔍";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  opacity: 0.55;
  pointer-events: none;
}
.filter-search input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  border-radius: 999px;
  border: 1.5px solid var(--ink-200);
  font-family: var(--font-body);
  font-size: 0.92rem;
  background: #fff;
}
.filter-search input:focus {
  outline: none;
  border-color: var(--blue-600);
}
.filter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

/* --------------------------- Toast --------------------------- */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--blue-900);
  color: #fff;
  padding: 12px 22px;
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-pop);
  font-size: 0.88rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 999;
  max-width: 90vw;
  text-align: center;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --------------------------- Hero interno (Exámenes) --------------------------- */
.portal-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(125deg, var(--blue-900) 0%, var(--blue-700) 55%, var(--blue-600) 100%);
  border-radius: var(--radius-l);
  color: #fff;
  padding: 36px 38px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-pop);
}
.portal-hero::before,
.portal-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}
.portal-hero::before { width: 260px; height: 260px; top: -120px; right: -60px; }
.portal-hero::after { width: 160px; height: 160px; bottom: -80px; right: 140px; background: rgba(255, 199, 44, 0.12); }
.portal-hero-inner { position: relative; z-index: 1; }
.portal-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--yellow-500);
  margin-bottom: 10px;
}
.portal-hero h2 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 8px;
  max-width: 46ch;
}
.portal-hero p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 62ch;
  margin: 0 0 20px;
}
.portal-hero-stats {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.portal-hero-stat {
  display: flex;
  flex-direction: column;
}
.portal-hero-stat strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
}
.portal-hero-stat span {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.7);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-m);
  padding: 24px 18px;
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-pop);
}
.feature-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 12px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: var(--feature-color, var(--blue-100));
}
.feature-card h4 {
  font-size: 0.92rem;
  margin: 0 0 6px;
}
.feature-card p {
  font-size: 0.8rem;
  color: var(--ink-500);
  margin: 0;
}

/* --------------------------- Responsive --------------------------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .benefits-strip { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-visual { display: none; }
  .dash-shell { grid-template-columns: 1fr; }
  .dash-sidebar { flex-direction: row; overflow-x: auto; align-items: center; }
  .dash-sidebar .brand { margin-bottom: 0; }
  .dash-nav { display: flex; }
  .logout-link { margin-top: 0 !important; }
  .sector-grid { grid-template-columns: repeat(2, 1fr); }
  .plans-grid { grid-template-columns: repeat(2, 1fr); }
  .filter-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .portal-hero { padding: 26px 22px; }
}
@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-strip { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-cards { grid-template-columns: 1fr; }
  .dash-main { padding: 24px 16px; }
  .sector-grid { grid-template-columns: 1fr; }
  .plans-grid { grid-template-columns: 1fr; }
  .filter-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   BARRA "VOLVER" (presente en todas las páginas internas)
   ========================================================================= */
.back-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.back-bar .btn {
  box-shadow: none;
}
.btn-back {
  background: var(--white);
  color: var(--blue-700);
  border: 1.5px solid var(--ink-200);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.16s;
}
.btn-back:hover {
  border-color: var(--blue-600);
  color: var(--blue-900);
  transform: translateX(-2px);
}
.btn-back.solid {
  background: var(--yellow-500);
  border-color: var(--yellow-500);
  color: var(--blue-900);
}

/* =========================================================================
   BIBLIOTECA DE EXÁMENES (selector de modalidad + filas de resultados)
   ========================================================================= */
.modality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.modality-card {
  background: var(--white);
  border: 2px solid var(--ink-100);
  border-radius: var(--radius-l);
  padding: 26px 20px;
  text-align: center;
  cursor: pointer;
  transition: 0.18s;
  box-shadow: var(--shadow-card);
  display: block;
  position: relative;
  overflow: hidden;
}
.modality-card::after {
  content: "→";
  position: absolute;
  right: 18px;
  bottom: 14px;
  font-size: 1.1rem;
  color: var(--mod-color, var(--blue-600));
  opacity: 0;
  transform: translateX(-6px);
  transition: 0.18s;
}
.modality-card:hover {
  transform: translateY(-4px);
  border-color: var(--mod-color, var(--blue-600));
  box-shadow: var(--shadow-pop);
}
.modality-card:hover::after { opacity: 1; transform: translateX(0); }
.modality-card .modality-icon {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.7rem;
  margin: 0 auto 12px;
  background: color-mix(in srgb, var(--mod-color, #2158b8) 14%, #fff);
}
.modality-card h3 { margin: 0 0 6px; font-size: 1.12rem; }
.modality-card p { margin: 0; font-size: 0.88rem; color: var(--ink-500); }
.modality-card .modality-count {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--blue-100);
  color: var(--blue-800);
}

.results-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 14px;
  flex-wrap: wrap;
}
.results-count {
  font-size: 0.86rem;
  color: var(--ink-500);
}
.results-count strong { color: var(--blue-900); }

.exam-row {
  background: var(--white);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  padding: 18px 22px;
  display: grid;
  grid-template-columns: auto 1.6fr auto auto;
  gap: 18px;
  align-items: center;
  margin-bottom: 14px;
  border-left: 5px solid var(--cat-color, var(--blue-600));
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}
.exam-row:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-pop);
}
.exam-row-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: color-mix(in srgb, var(--cat-color, var(--blue-600)) 14%, #fff);
  flex: none;
}
.exam-row h3 {
  margin: 0 0 2px;
  font-size: 1.1rem;
  color: var(--blue-700);
}
.exam-row .exam-row-sub {
  font-size: 0.86rem;
  color: var(--ink-500);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.exam-free-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--green-600);
  background: var(--green-100);
  padding: 2px 9px;
  border-radius: 999px;
}
.exam-row .exam-row-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.exam-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--ink-700);
  font-size: 0.82rem;
  white-space: nowrap;
  background: var(--ink-100);
  padding: 5px 11px;
  border-radius: 999px;
}
.exam-row .exam-row-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.btn-practice {
  background: var(--white);
  border: 2px solid var(--blue-600);
  color: var(--blue-600);
  border-radius: 999px;
  padding: 9px 18px;
  font-weight: 700;
  font-size: 0.86rem;
  transition: 0.14s;
}
.btn-practice:hover { background: var(--blue-100); }
.btn-sim {
  background: var(--blue-600);
  color: #fff;
  border: 2px solid var(--blue-600);
  border-radius: 999px;
  padding: 9px 18px;
  font-weight: 700;
  font-size: 0.86rem;
  transition: 0.14s;
}
.btn-sim:hover { background: var(--blue-700); }
.btn-download-exam {
  background: var(--yellow-500);
  color: var(--blue-900);
  border: 2px solid var(--yellow-500);
  border-radius: 999px;
  padding: 9px 18px;
  font-weight: 700;
  font-size: 0.86rem;
  transition: 0.14s;
}
.btn-download-exam:hover { background: var(--yellow-600); border-color: var(--yellow-600); }
.tutorial-cta {
  display: block;
  width: fit-content;
  margin: 22px auto;
  background: var(--yellow-600);
  color: #fff;
  font-weight: 700;
  padding: 12px 26px;
  border-radius: 999px;
  box-shadow: var(--shadow-card);
}
.tutorial-cta:hover { background: var(--yellow-500); color: var(--blue-900); }

.empty-state {
  text-align: center;
  color: var(--ink-500);
  padding: 46px 20px;
  background: var(--blue-50);
  border-radius: var(--radius-m);
}
.empty-state .empty-icon { font-size: 2.2rem; margin-bottom: 10px; }
.empty-state strong { display: block; color: var(--ink-700); margin-bottom: 4px; }

@media (max-width: 860px) {
  .exam-row { grid-template-columns: auto 1fr; }
  .exam-row .exam-row-stats { grid-column: 2; }
  .exam-row .exam-row-actions { grid-column: 1 / -1; justify-content: flex-start; }
}

/* =========================================================================
   GENERADOR DE HORARIOS
   ========================================================================= */
.wizard-steps {
  display: flex;
  gap: 10px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.wizard-step {
  flex: 1 1 200px;
  background: var(--white);
  border: 2px solid var(--ink-100);
  border-radius: var(--radius-m);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--ink-500);
  cursor: pointer;
  transition: 0.16s;
}
.wizard-step .num {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--ink-100);
  color: var(--ink-500);
  display: grid; place-items: center;
  font-weight: 700;
  flex: none;
}
.wizard-step.active {
  border-color: var(--blue-600);
  color: var(--blue-900);
  box-shadow: var(--shadow-card);
}
.wizard-step.active .num { background: var(--blue-600); color: #fff; }
.wizard-step.done .num { background: var(--green-600); color: #fff; }

.hz-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hz-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.hz-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.hz-chip {
  border: 2px solid var(--ink-200);
  background: var(--white);
  border-radius: 999px;
  padding: 7px 15px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink-700);
  transition: 0.15s;
}
.hz-chip.on {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
}
.hz-list { display: flex; flex-direction: column; gap: 10px; }
.hz-item {
  background: var(--white);
  border: 1.5px solid var(--ink-100);
  border-radius: var(--radius-m);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.hz-item .hz-dot {
  width: 14px; height: 14px; border-radius: 50%; flex: none;
}
.hz-item .hz-name { font-weight: 700; color: var(--blue-900); }
.hz-item .hz-meta { font-size: 0.82rem; color: var(--ink-500); }
.hz-item .hz-actions { margin-left: auto; display: flex; gap: 6px; }
.hz-empty {
  text-align: center;
  color: var(--ink-500);
  padding: 18px;
  border: 2px dashed var(--ink-200);
  border-radius: var(--radius-m);
  font-size: 0.9rem;
}
.hz-preview {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 260px; overflow: auto;
}
.hz-preview .row {
  display: flex; justify-content: space-between;
  padding: 6px 12px; border-radius: var(--radius-s);
  background: var(--blue-50); font-size: 0.85rem;
}
.hz-preview .row.break { background: var(--yellow-100); font-weight: 600; }

.hz-table-wrap { overflow-x: auto; }
table.hz-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
  background: var(--white);
  border-radius: var(--radius-m);
  overflow: hidden;
}
table.hz-table th, table.hz-table td {
  border: 1px solid var(--ink-100);
  padding: 6px;
  text-align: center;
  font-size: 0.78rem;
  vertical-align: middle;
}
table.hz-table th {
  background: var(--blue-900);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.8rem;
}
table.hz-table td.hour-col {
  background: var(--blue-50);
  font-weight: 700;
  color: var(--blue-800);
  white-space: nowrap;
}
table.hz-table tr.break-row td {
  background: var(--yellow-100);
  font-weight: 700;
  color: var(--blue-900);
}
.hz-cell {
  cursor: pointer;
  border-radius: 6px;
  padding: 6px 4px;
  min-height: 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  transition: 0.15s;
}
.hz-cell:hover { outline: 2px solid var(--blue-600); }
.hz-cell strong { font-size: 0.8rem; display: block; }
.hz-cell span { font-size: 0.7rem; opacity: 0.85; }
.hz-cell.free { color: var(--ink-500); background: repeating-linear-gradient(45deg, #f7f9fc, #f7f9fc 6px, #eef2f8 6px, #eef2f8 12px); }
.hz-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.hz-tab {
  border: 2px solid var(--ink-200);
  background: var(--white);
  border-radius: 999px;
  padding: 7px 16px;
  font-weight: 600;
  font-size: 0.85rem;
}
.hz-tab.on { background: var(--blue-900); border-color: var(--blue-900); color: #fff; }
.hz-export-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.hz-export-card {
  background: var(--white);
  border: 1.5px solid var(--ink-100);
  border-radius: var(--radius-m);
  padding: 16px;
  text-align: center;
}
.hz-export-card h4 { margin: 0 0 4px; font-size: 0.95rem; }
.hz-export-card p { font-size: 0.8rem; color: var(--ink-500); margin: 0 0 12px; }
.hz-warn {
  background: var(--yellow-100);
  border-left: 4px solid var(--yellow-600);
  padding: 12px 14px;
  border-radius: var(--radius-s);
  font-size: 0.86rem;
  color: var(--ink-700);
  margin-bottom: 14px;
}
.hz-ok {
  background: var(--green-100);
  border-left: 4px solid var(--green-600);
  padding: 12px 14px;
  border-radius: var(--radius-s);
  font-size: 0.86rem;
  color: var(--ink-700);
  margin-bottom: 14px;
}
.avail-grid { display: grid; gap: 4px; }
.avail-cell {
  border-radius: 5px;
  padding: 6px 2px;
  font-size: 0.7rem;
  text-align: center;
  cursor: pointer;
  background: var(--green-100);
  color: var(--green-600);
  font-weight: 700;
  border: 1px solid transparent;
}
.avail-cell.off { background: var(--red-100); color: var(--red-600); }

@media (max-width: 860px) {
  .hz-grid-2, .hz-grid-3, .hz-export-grid { grid-template-columns: 1fr; }
}

/* Botón pequeño "Editar lista" junto a las etiquetas de los <select> del
   panel admin (Subir material). */
.btn-list-edit {
  border: 1.5px solid var(--blue-600);
  background: var(--white);
  color: var(--blue-600);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}
.btn-list-edit:hover { background: var(--blue-100); }
.list-editor-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.list-editor-row input[type="text"] { flex: 1; }

/* =========================================================================
   NAVEGACIÓN MÓVIL (menú hamburguesa del header público)
   -------------------------------------------------------------------------
   Antes, por debajo de 720px la regla `.main-nav { display: none }` escondía
   el menú y mostraba un `.nav-toggle` que nunca se llegaba a crear en el
   HTML: el sitio se quedaba sin navegación en el celular. Aquí va el estilo
   del botón y del panel desplegable que ahora sí pinta renderPublicHeader().
   ========================================================================= */
.nav-toggle {
  /* OJO: no repetir "display: none" aquí — .nav-toggle ya lo trae por
     defecto (línea ~283) y el media query de arriba (max-width: 720px)
     lo pone en "display: block" para celular. Si esta regla también
     trajera "display: none", al ir después en el archivo GANARÍA sobre
     el media query (misma especificidad, orden de cascada) y el botón
     de hamburguesa volvería a desaparecer en el celular. */
  background: none;
  border: none;
  color: var(--white);
  padding: 10px;
  cursor: pointer;
  border-radius: 10px;
  line-height: 0;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.12); }
.nav-toggle-bars {
  display: inline-block;
  width: 24px;
  height: 18px;
  position: relative;
}
.nav-toggle-bars span {
  display: block;
  position: absolute;
  left: 0;
  width: 100%;
  height: 2.5px;
  border-radius: 2px;
  background: var(--white);
  transition: transform 0.22s ease, opacity 0.18s ease, top 0.22s ease;
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 8px; }
.nav-toggle-bars span:nth-child(3) { top: 16px; }
.nav-toggle.open .nav-toggle-bars span:nth-child(1) { top: 8px; transform: rotate(45deg); }
.nav-toggle.open .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle.open .nav-toggle-bars span:nth-child(3) { top: 8px; transform: rotate(-45deg); }

.mobile-nav {
  display: none;
  background: var(--blue-900);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 8px 20px 20px;
  max-height: calc(100vh - 78px);
  overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-nav-links { display: flex; flex-direction: column; }
.mobile-nav-links a {
  color: var(--blue-100);
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-nav-links a:hover,
.mobile-nav-links a.active { color: var(--yellow-500); }
.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 16px;
}
.mobile-nav-user { color: var(--blue-100); line-height: 1.35; margin-bottom: 4px; }
.mobile-nav-user strong { display: block; color: var(--white); font-size: 1rem; }
.mobile-nav-user span { font-size: 0.82rem; word-break: break-all; }
body.nav-open { overflow: hidden; }

/* Enlace activo también en el menú de escritorio */
.main-nav a.active { color: var(--yellow-500); font-weight: 600; }

/* =========================================================================
   ESTADO DE CARGA (evita secciones en blanco mientras responde Firestore)
   ========================================================================= */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px 16px;
  color: var(--ink-500);
  font-size: 0.92rem;
  width: 100%;
}
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--ink-200);
  border-top-color: var(--blue-600);
  border-radius: 50%;
  animation: pg-spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes pg-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .loading-spinner { animation-duration: 2s; }
}

/* =========================================================================
   NAVEGACIÓN LATERAL EN CELULAR (dashboard, exámenes, recursos, panel)
   -------------------------------------------------------------------------
   En pantallas chicas la barra lateral pasa a ser una tira horizontal
   arriba. Se le da scroll suave, se fija arriba al hacer scroll y se
   esconde el nombre de marca para que los enlaces tengan sitio.
   ========================================================================= */
@media (max-width: 980px) {
  .dash-sidebar {
    position: sticky;
    top: 0;
    z-index: 30;
    gap: 10px;
    padding: 10px 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .dash-sidebar::-webkit-scrollbar { display: none; }
  .dash-sidebar .brand-name { display: none; }
  .dash-sidebar .brand-badge { width: 38px; height: 38px; border-width: 2px; }
  .dash-nav { gap: 6px; }
  .dash-nav a {
    white-space: nowrap;
    margin-bottom: 0;
    padding: 9px 13px;
    font-size: 0.86rem;
  }
  .dash-sidebar .logout-link { white-space: nowrap; padding: 9px 12px; }
}

/* Tablas anchas (miembros, materiales, páginas) con scroll propio en vez
   de desbordar la página entera hacia los lados. */
@media (max-width: 860px) {
  .panel { overflow-x: auto; }
  .data-table { min-width: 620px; }
}

/* El botón flotante de WhatsApp tapaba el botón "Finalizar" del simulacro
   en pantallas chicas; se le da algo de aire por abajo al contenido. */
@media (max-width: 720px) {
  .whatsapp-float { bottom: 16px; right: 16px; }
  .dash-main { padding-bottom: 88px; }
}

/* Bloque explicativo de la pestaña "Ayudantes" del panel */
.helper-explainer {
  background: var(--blue-50, #eef3fb);
  border: 1px solid var(--ink-200);
  border-left: 4px solid var(--blue-600);
  border-radius: var(--radius-s, 10px);
  padding: 16px 18px;
  font-size: 0.9rem;
  line-height: 1.6;
}
.helper-explainer code {
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
}