/* =============================================================
   Intranet Cinebase — Zona Usuario
   Mobile first · Bootstrap 5.3 override
   ============================================================= */

/* ─── 1. VARIABLES ─────────────────────────────────────────── */
:root {
  --color-primary:       #00A89C;
  --color-primary-dark:  #008c81;
  --color-primary-light: #e6f7f6;
  --color-white:         #ffffff;
  --color-bg:            #F5F5F5;
  --color-bg-card:       #ffffff;
  --color-text:          #1A1A1A;
  --color-text-secondary:#4A4A4A;
  --color-border:        #E0E0E0;
  --color-danger:        #DC3545;
  --color-danger-light:  #fff0f1;
  --color-success:       #198754;
  --color-success-light: #edfdf5;
  --color-muted:         #6C757D;
  --color-muted-light:   #f0f0f0;

  --font-family:    'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs:   0.75rem;   /* 12px */
  --font-size-sm:   0.875rem;  /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-md:   1.0625rem; /* 17px */
  --font-size-lg:   1.125rem;  /* 18px */
  --font-size-xl:   1.25rem;   /* 20px */
  --font-size-2xl:  1.5rem;    /* 24px */
  --font-size-3xl:  1.875rem;  /* 30px */

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-full: 9999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,.12);

  --transition: 0.2s ease;

  /* Layout */
  --bottom-nav-height: 64px;
  --header-height:     56px;
}

/* ─── 2. RESET Y BASE ───────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  padding-bottom: var(--bottom-nav-height); /* espacio para bottom nav */
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

/* ─── 3. TIPOGRAFÍA ─────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin-top: 0;
}

h1 { font-size: clamp(1.5rem, 5vw, 2.25rem); }
h2 { font-size: clamp(1.25rem, 4vw, 1.75rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.375rem); }

.text-primary  { color: var(--color-primary) !important; }
.text-muted-cb { color: var(--color-muted) !important; }
.text-sm       { font-size: var(--font-size-sm); }
.text-xs       { font-size: var(--font-size-xs); }
.fw-semibold   { font-weight: 600; }

/* ─── 4. LAYOUT APP ─────────────────────────────────────────── */

/* Header superior */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

/* Logo SVG en el header de usuario */
.app-header__logo img {
  display: block;
  height: 26px;
  width: auto;
}

.app-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Área de contenido principal */
.app-main {
  padding-top: calc(var(--header-height) + 1rem);
  padding-left: 1rem;
  padding-right: 1rem;
  padding-bottom: 1.5rem;
  min-height: 100vh;
}

/* Navegación inferior (mobile) */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-height);
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: stretch;
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0,0,0,.06);
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
  padding: 8px 4px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.bottom-nav__item svg,
.bottom-nav__item i { font-size: 1.3rem; }

.bottom-nav__item.active,
.bottom-nav__item:hover {
  color: var(--color-primary);
}

/* ─── 5. BOTONES ─────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background-color: var(--color-primary);
  color: var(--color-white) !important;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  padding: 0.55rem 1.4rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(0,168,156,.3);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary:disabled,
.btn-primary[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Variante outline */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  padding: 0.55rem 1.4rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* Variante ghost (sin borde) */
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: none;
  color: var(--color-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
  font-family: var(--font-family);
}

.btn-ghost:hover { color: var(--color-primary); background: var(--color-primary-light); }

/* Tamaños */
.btn-sm { padding: 0.35rem 1rem; font-size: var(--font-size-xs); }
.btn-lg { padding: 0.75rem 2rem; font-size: var(--font-size-base); }
.btn-block { width: 100%; }

/* ─── 6. TARJETAS DE ACTIVIDAD ───────────────────────────────── */
.card-activity {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.card-activity:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: inherit;
  text-decoration: none;
}

/* Imagen hero de la card */
.card-activity__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-muted-light);
}

.card-activity__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.card-activity:hover .card-activity__image img {
  transform: scale(1.04);
}

/* Placeholder cuando no hay imagen */
.card-activity__image--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
  font-size: 2.5rem;
}

/* Contenido de la card */
.card-activity__body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.5rem;
}

.card-activity__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.card-activity__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
  /* Limitar a 2 líneas */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-activity__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-muted);
  font-size: var(--font-size-xs);
  margin-top: auto;
}

.card-activity__meta-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Grid de cards */
.activities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* Empty state */
.activities-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-muted);
}

.activities-empty__icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}

/* ─── 7. BADGES ──────────────────────────────────────────────── */
.badge-type,
.badge-module,
.badge-cb {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
  line-height: 1.4;
}

/* Tipo de actividad → fondo primario suave */
.badge-type {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* Módulo → gris neutro */
.badge-module {
  background-color: var(--color-muted-light);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Badge de especialidad */
.badge-specialty {
  background-color: #fff8e6;
  color: #8a6300;
  border: 1px solid #ffe8a0;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}

/* Badge de duración */
.badge-duration {
  background-color: #f0f4ff;
  color: #3a4db5;
  border: 1px solid #d0d9ff;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}

/* Info rápida en la ficha de actividad */
.activity-quick-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin-top: 0.625rem;
}

.activity-quick-info__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  font-weight: 500;
}

.activity-quick-info__item svg { flex-shrink: 0; }

.activity-quick-info__item--level-beginner     { color: #0369a1; }
.activity-quick-info__item--level-intermediate { color: #c2410c; }
.activity-quick-info__item--level-advanced     { color: #7e22ce; }

.badge-level,
.badge-students {
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}

.badge-students {
  background-color: #f0faf5;
  color: #1a7a4a;
  border: 1px solid #b7e4cc;
}

.badge-level { border: 1px solid; }
.badge-level--beginner     { background-color: #f0f9ff; color: #0369a1; border-color: #bae6fd; }
.badge-level--intermediate { background-color: #fff7ed; color: #c2410c; border-color: #fed7aa; }
.badge-level--advanced     { background-color: #fdf4ff; color: #7e22ce; border-color: #e9d5ff; }

/* ─── 8. BARRA DE FILTROS ────────────────────────────────────── */
#filterForm {
  width: 100%;
  min-width: 0;
}

.filter-bar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0.875rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  box-shadow: var(--shadow-sm);
  width: 100%;
  min-width: 0;
  overflow: hidden;
}

.filter-bar__search {
  position: relative;
}

.filter-bar__search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
  font-size: 1rem;
}

.filter-bar__input {
  width: 100%;
  padding: 0.55rem 0.875rem 0.55rem 2.25rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.filter-bar__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,168,156,.15);
  background: var(--color-white);
}

.filter-bar__selects {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.filter-bar__select {
  flex: 1;
  width: 100%;
  min-width: 0;
  padding: 0.5rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236C757D' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
  transition: border-color var(--transition);
  outline: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.filter-bar__select:focus { border-color: var(--color-primary); }

.filter-bar__clear {
  align-self: flex-end;
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  font-family: var(--font-family);
  transition: color var(--transition);
}

.filter-bar__clear:hover { color: var(--color-danger); }

/* Indicador de filtros activos */
.filter-bar--active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0,168,156,.12);
}

/* ─── 9. FORMULARIOS ─────────────────────────────────────────── */
.form-group { margin-bottom: 1.125rem; }

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  line-height: 1.5;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,168,156,.15);
}

.form-control::placeholder { color: var(--color-muted); opacity: 0.7; }
.form-control.is-invalid   { border-color: var(--color-danger); }
.form-control.is-invalid:focus { box-shadow: 0 0 0 3px rgba(220,53,69,.15); }

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: 0.25rem;
}

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

/* ─── 10. ALERTAS ────────────────────────────────────────────── */
.alert-cb {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.alert-cb--success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid #b7e8d0;
}

.alert-cb--danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid #f5c6cb;
}

.alert-cb--info {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px solid #b2e3df;
}

.alert-cb--warning {
  background: #fff9e6;
  color: #856404;
  border: 1px solid #ffe69c;
}

/* ─── 11. FICHA DE ACTIVIDAD ─────────────────────────────────── */
.activity-hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--color-muted-light);
  display: block;
  margin-bottom: 1.25rem;
}

.activity-header { margin-bottom: 1.25rem; }
.activity-title  { margin-bottom: 0.5rem; }

.activity-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.activity-description {
  font-size: var(--font-size-base);
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.activity-description p { margin-bottom: 0.75rem; }

/* Vídeo embed responsive */
.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  margin-bottom: 1.5rem;
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Vídeo local (MP4 servido localmente) */
.video-local-wrap {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  margin-bottom: 1.5rem;
}

.video-local-player {
  display: block;
  width: 100%;
  max-height: 540px;
}

/* Recursos adicionales */
.resources-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.resources-list__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}

.resources-list__item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.resources-list__icon { color: var(--color-primary); flex-shrink: 0; }

.resources-list__video-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
}

.resources-list__video-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.resources-list__video-player {
  display: block;
  width: 100%;
  max-height: 480px;
  background: #000;
}

/* Botón consulta profesor */
.btn-consult {
  width: 100%;
  margin-bottom: 1.5rem;
  padding: 0.75rem 1.5rem;
}

/* ─── 12. COMENTARIOS ────────────────────────────────────────── */
.comments-section { margin-bottom: 2rem; }

.comments-section__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.comment-form { margin-bottom: 1.5rem; }

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.comment-item {
  display: flex;
  gap: 0.75rem;
}

.comment-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.comment-body { flex: 1; min-width: 0; }

.comment-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.comment-author {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.comment-date {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.comment-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  word-break: break-word;
}

/* ─── 13. SELECTOR DE IDIOMA ─────────────────────────────────── */
.lang-selector {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.lang-selector__btn {
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  background: none;
  border: 1.5px solid transparent;
  color: var(--color-muted);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all var(--transition);
  font-family: var(--font-family);
}

.lang-selector__btn.active,
.lang-selector__btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ─── 14. SPINNER / LOADING ──────────────────────────────────── */
.spinner-cb {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--color-primary-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem 0;
  color: var(--color-muted);
  gap: 0.75rem;
  font-size: var(--font-size-sm);
}

/* ─── 15. SECCIÓN TÍTULO + SEPARADOR ─────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: 0;
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 1.5rem 0;
}

/* ─── 16. PAGINACIÓN ─────────────────────────────────────────── */
.pagination-cb {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  margin-top: 1.5rem;
}

.pagination-cb__btn {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-family);
  text-decoration: none;
}

.pagination-cb__btn:hover,
.pagination-cb__btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.pagination-cb__btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ─── 17. MODAL ──────────────────────────────────────────────── */
.modal-cb .modal-content {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-cb .modal-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1.125rem 1.25rem;
}

.modal-cb .modal-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.modal-cb .modal-footer {
  border-top: 1px solid var(--color-border);
  padding: 0.875rem 1.25rem;
  gap: 0.5rem;
}

/* ─── 18. TOAST / NOTIFICACIÓN ───────────────────────────────── */
.toast-cb {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 1rem);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--color-text);
  color: var(--color-white);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

.toast-cb.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast-cb--success { background: var(--color-primary); }
.toast-cb--error   { background: var(--color-danger); }

/* ─── 19. PERFIL DE USUARIO ─────────────────────────────────── */

/* Tarjeta de avatar + email */
.profile-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.profile-card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.profile-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  flex-shrink: 0;
}

.profile-card__info {
  min-width: 0;
}

.profile-card__email {
  margin: 0 0 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  word-break: break-all;
}

.profile-card__role {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--radius-full);
  padding: 0.15rem 0.6rem;
}

/* Secciones del perfil */
.profile-section {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.profile-section__title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.profile-section--logout {
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
  padding-bottom: 1rem;
}

/* Formulario del perfil */
.profile-form .form-group:last-of-type {
  margin-bottom: 1rem;
}

/* Selector de idioma en perfil */
.profile-lang-options {
  display: flex;
  gap: 0.625rem;
}

.profile-lang-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.profile-lang-option input[type="radio"] {
  display: none;
}

.profile-lang-option.active,
.profile-lang-option:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* Alertas inline */
.alert-cb {
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 1rem;
}

.alert-cb--success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid #b7e4cc;
}

.alert-cb--error {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid #f5c2c7;
}

/* Botón de cerrar sesión con estilo peligro */
.btn-danger-outline {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.btn-danger-outline:hover {
  background: var(--color-danger);
  color: var(--color-white);
}

/* ─── 20. UTILITIES ─────────────────────────────────────────── */
.gap-xs  { gap: 0.25rem; }
.gap-sm  { gap: 0.5rem; }
.gap-md  { gap: 1rem; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ─── 20. MEDIA QUERIES ──────────────────────────────────────── */

/* Tablet (≥768px) */
@media (min-width: 768px) {
  body { padding-bottom: 0; }

  .bottom-nav { display: none; }

  .app-header { padding: 0 2rem; }

  .app-main {
    padding: calc(var(--header-height) + 1.5rem) 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
  }

  .activities-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .filter-bar {
    flex-direction: row;
    align-items: center;
  }

  .filter-bar__search { flex: 2; }

  .filter-bar__selects {
    display: flex;
    flex: 1.5;
    flex-direction: row;
  }
}

/* Desktop (≥1024px) */
@media (min-width: 1024px) {
  .activities-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .activity-hero {
    aspect-ratio: 21 / 9;
    max-height: 420px;
    object-fit: cover;
  }
}

/* Desktop wide (≥1280px) */
@media (min-width: 1280px) {
  .app-main { padding-left: 3rem; padding-right: 3rem; }
}

/* ─── 21. HEADER DESKTOP — NAV Y USUARIO ────────────────────── */

/* Navegación central del header (visible solo ≥768px) */
.app-header__nav {
  display: none;
  align-items: center;
  gap: 0.125rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.app-nav__link {
  padding: 0.4rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition);
  white-space: nowrap;
}

.app-nav__link:hover  { color: var(--color-primary); background: var(--color-primary-light); }
.app-nav__link.active { color: var(--color-primary); background: var(--color-primary-light); font-weight: 600; }

/* Avatar de usuario (inicial en círculo) */
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-xs);
  flex-shrink: 0;
  user-select: none;
}

/* Botón trigger del dropdown de usuario */
.btn-user-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  padding: 0.2rem 0.5rem 0.2rem 0.2rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  font-family: var(--font-family);
  transition: border-color var(--transition), background var(--transition);
  line-height: 1;
}

.btn-user-menu:hover  { border-color: var(--color-border); background: var(--color-muted-light); }
.btn-user-menu::after { display: none; } /* quita la flecha de Bootstrap */

/* Dropdown del usuario */
.user-dropdown.dropdown-menu {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 0.375rem;
  min-width: 180px;
  font-size: var(--font-size-sm);
}

.user-dropdown .dropdown-item {
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-family: var(--font-family);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background var(--transition), color var(--transition);
}

.user-dropdown .dropdown-item:hover  { background: var(--color-primary-light); color: var(--color-primary); }
.user-dropdown .dropdown-divider     { border-color: var(--color-border); margin: 0.25rem 0; }
.user-dropdown .dropdown-item--danger:hover { background: var(--color-danger-light); color: var(--color-danger); }

/* Nombre de usuario en el header (solo ≥1024px) */
.user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  max-width: 120px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Media query para mostrar la nav de header */
@media (min-width: 768px) {
  .app-header { position: sticky; } /* sticky en desktop */
  .app-header__nav { display: flex; }
}

/* ─── 22. PÁGINA DE DETALLE DE ACTIVIDAD ────────────────────── */

/* Volver al listado */
.activity-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  margin-bottom: 1rem;
  transition: color var(--transition);
  padding: 0.25rem 0;
}

.activity-back:hover { color: var(--color-primary); }

/* Grid de metadatos / características */
.activity-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  margin-bottom: 1.25rem;
}

.activity-meta__item       { display: flex; flex-direction: column; gap: 2px; }
.activity-meta__item--wide { grid-column: 1 / -1; }

.activity-meta__label {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.activity-meta__value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* Especialidades */
.activity-specialties {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

/* Título de sección dentro de la ficha */
.activity-section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: 0 0 0.875rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

/* Contador de caracteres modal consulta */
.consult-char-count {
  display: block;
  text-align: right;
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  margin-top: 0.25rem;
  transition: color var(--transition);
}

.consult-char-count.near-limit { color: #f59e0b; }
.consult-char-count.at-limit   { color: var(--color-danger); }

/* Colores alternativos para avatares de comentarios */
.comment-avatar[data-color="1"] { background: #e8f4fd; color: #2576a8; }
.comment-avatar[data-color="2"] { background: #fff3e6; color: #c0621a; }
.comment-avatar[data-color="3"] { background: #eafaf1; color: #1e8449; }
.comment-avatar[data-color="4"] { background: #f4ecf7; color: #7d3c98; }
.comment-avatar[data-color="5"] { background: var(--color-primary-light); color: var(--color-primary-dark); }

/* Formulario de comentario */
.comment-form__row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.comment-form__textarea {
  flex: 1;
  min-height: 80px;
  resize: none;
}

.comment-form__submit {
  flex-shrink: 0;
  align-self: flex-end;
}

/* Botón flotante de consulta en móvil */
@media (max-width: 767px) {
  .btn-consult-float {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + 0.875rem);
    right: 1rem;
    z-index: 90;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    padding: 0.65rem 1.25rem;
    font-size: var(--font-size-sm);
    white-space: nowrap;
  }

  /* Prevenir zoom automático en iOS (inputs < 16px) + targets táctiles */
  .filter-bar__input {
    font-size: 1rem;
    min-height: 44px;
  }

  .filter-bar__select {
    font-size: 0.8125rem; /* 13px — texto compacto sin causar zoom en Android */
    min-height: 44px;
    padding-left: 0.625rem;
    padding-right: 1.625rem;
    background-position: right 0.5rem center;
  }

  /* El grid de selects no debe desbordar la pantalla */
  .filter-bar__selects {
    width: 100%;
    overflow: hidden;
  }

  /* Targets táctiles más grandes para paginación */
  .pagination-cb__btn {
    min-width: 44px;
    height: 44px;
    font-size: var(--font-size-base);
  }

  /* Botón limpiar más fácil de pulsar */
  .filter-bar__clear {
    padding: 0.5rem 0.875rem;
    align-self: center;
  }

  /* El encabezado de sección no necesita ser tan grande en móvil */
  .section-title {
    font-size: var(--font-size-lg);
  }
}

@media (min-width: 768px) {
  .btn-consult-float { display: none; }
  .btn-consult       { display: flex; } /* solo visible en desktop */
}

/* ─── 23. ÁREA DE AUTENTICACIÓN ──────────────────────────────── */

/* Override del padding-bottom del body en páginas auth */
body.auth-page {
  padding-bottom: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--color-bg);
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1rem;
}

/* Wrapper exterior */
.auth-wrap {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

/* Tarjeta principal */
.auth-card {
  width: 100%;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

/* Cabecera de la tarjeta (logo) */
.auth-card__header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.75rem 2rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

/* Cuerpo: zona del formulario */
.auth-card__body {
  padding: 1.75rem 2rem;
}

/* Título y subtítulo del formulario */
.auth-title {
  font-size: var(--font-size-xl);
  font-weight: 800;
  margin: 0 0 0.25rem;
  color: var(--color-text);
  letter-spacing: -0.3px;
}

.auth-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

/* Footer de la tarjeta: links de navegación */
.auth-card__footer {
  padding: 1rem 2rem 1.25rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Link acción dentro de la tarjeta */
.auth-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition);
}

.auth-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Pie de página de la pantalla (fuera de la tarjeta) */
.auth-page__footer {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  text-align: center;
  opacity: 0.8;
}

/* Divider "o" entre opciones */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  color: var(--color-muted);
  font-size: var(--font-size-xs);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Campo de contraseña con botón mostrar/ocultar */
.input-pass-wrap {
  position: relative;
}

.input-pass-wrap .form-control {
  padding-right: 2.75rem;
}

.btn-show-pass {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  line-height: 1;
  transition: color var(--transition);
}

.btn-show-pass:hover { color: var(--color-primary); }

/* Indicador de fortaleza de contraseña */
.pass-strength {
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  margin-top: 0.5rem;
  overflow: hidden;
}

.pass-strength__bar {
  height: 100%;
  width: 0%;
  border-radius: var(--radius-full);
  transition: width 0.35s ease, background-color 0.35s ease;
}

.pass-strength[data-level="weak"]   .pass-strength__bar { width: 33%; background: var(--color-danger); }
.pass-strength[data-level="medium"] .pass-strength__bar { width: 66%; background: #f59e0b; }
.pass-strength[data-level="strong"] .pass-strength__bar { width: 100%; background: var(--color-success); }

.pass-strength__label {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  margin-top: 0.25rem;
  display: block;
}

/* Link "recuperar contraseña" alineado a la derecha del label */
.form-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.375rem;
}

.form-label-row .form-label { margin-bottom: 0; }

.form-label-link {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

.form-label-link:hover { text-decoration: underline; }

/* Icono de estado en los campos (valid/invalid) */
.form-control.is-valid {
  border-color: var(--color-success);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23198754' stroke-width='2.5'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 14px;
  padding-right: 2.25rem;
}

.form-control.is-valid:focus { box-shadow: 0 0 0 3px rgba(25,135,84,.15); }

/* Alert de auth (más compacta que la genérica) */
.auth-alert {
  display: none; /* se muestra cuando hay mensaje */
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 1.25rem;
  align-items: flex-start;
  gap: 0.5rem;
}

.auth-alert.show { display: flex; }

.auth-alert--success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid #b7e8d0;
}

.auth-alert--danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid #f5c6cb;
}

.auth-alert--info {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px solid #b2e3df;
}

/* ══════════════════════════════════════════════════════════════
   §20 — PWA: Backdrop + Panel iOS
   ══════════════════════════════════════════════════════════════ */

@keyframes pwa-slide-up {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
@keyframes pwa-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Overlay oscuro — cubre la página detrás del panel */
.pwa-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1085;
  animation: pwa-fade-in 0.2s ease;
}
.pwa-backdrop[hidden] { display: none; }

/* Panel iOS — hoja inferior con instrucciones */
.ios-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 1.5rem 1.25rem calc(1.5rem + env(safe-area-inset-bottom));
  text-align: center;
  z-index: 1090;
  box-shadow: 0 -4px 24px rgba(0,0,0,.12);
  animation: pwa-slide-up 0.3s ease;
}
.ios-panel[hidden] { display: none; }

.ios-panel__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  color: var(--color-muted);
}
.ios-panel__close:hover { color: var(--color-text); }

.ios-panel__icon { border-radius: 14px; margin: 0 auto 0.75rem; display: block; }
.ios-panel__title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
}
.ios-panel__steps {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  text-align: left;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.ios-panel__steps li {
  counter-increment: step;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}
.ios-panel__steps li::before {
  content: counter(step);
  width: 22px;
  height: 22px;
  min-width: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Flecha apuntando al botón de compartir de Safari */
.ios-panel__arrow {
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid var(--color-border);
  margin: 0 auto;
  position: relative;
}
.ios-panel__arrow::after {
  content: '';
  position: absolute;
  top: -11px;
  left: -10px;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid var(--color-bg-card);
}