/* ═══════════════════════════════════════════════════════════════════════════
   SmartStyle File Manager — Main Stylesheet
   Fuente: DM Sans + DM Serif Display | Paleta: blanco/gris/índigo/slate
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Variables ───────────────────────────────────────────────────────────── */
:root {
  --primary:        #4f46e5;
  --primary-dark:   #3730a3;
  --primary-light:  #e0e7ff;
  --accent:         #06b6d4;
  --success:        #10b981;
  --warning:        #f59e0b;
  --danger:         #ef4444;
  --danger-light:   #fef2f2;

  --bg:             #f8f9fc;
  --bg-gradient:    linear-gradient(135deg, #f0f4ff 0%, #fafafa 60%, #f0fdf4 100%);
  --surface:        #ffffff;
  --surface-hover:  #f5f7ff;
  --border:         #e5e7eb;
  --border-focus:   #a5b4fc;

  --text-primary:   #111827;
  --text-secondary: #374151;
  --text-muted:     #9ca3af;
  --text-light:     #d1d5db;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.12);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.16);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --topbar-h:   64px;
  --sidebar-w:  240px;

  --transition: .2s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Animaciones ─────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity:0; transform: translateY(16px); }
  to   { opacity:1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity:0; }
  to   { opacity:1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  0%,100% { opacity:1; }
  50%      { opacity:.5; }
}
@keyframes slideInRight {
  from { transform: translateX(100%); opacity:0; }
  to   { transform: translateX(0);    opacity:1; }
}

/* ── Topbar ──────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--topbar-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}
.logo-mark {
  font-size: 1.6rem;
  color: var(--primary);
  line-height: 1;
}
.logo-text {
  font-family: 'DM Serif Display', serif;
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: -.01em;
}
.topbar-search { flex: 1; max-width: 520px; }
.topbar-nav {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Barra de búsqueda ────────────────────────────────────────────────────── */
.search-bar {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  padding: .45rem 1rem;
  gap: .5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-bar:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}
.search-icon {
  color: var(--text-muted);
  font-size: 1rem;
  flex-shrink: 0;
}
.search-input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: .95rem;
  color: var(--text-primary);
  min-width: 0;
}
.search-input::placeholder { color: var(--text-muted); }
.search-clear {
  color: var(--text-muted);
  font-size: .85rem;
  line-height: 1;
  padding: .1rem .25rem;
  border-radius: 50%;
  transition: color var(--transition);
}
.search-clear:hover { color: var(--danger); }

/* ── Main content ────────────────────────────────────────────────────────── */
.main-content { min-height: calc(100vh - var(--topbar-h) - 56px); }

/* ── Container ───────────────────────────────────────────────────────────── */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Botones ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  border: 1.5px solid transparent;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition), transform .1s;
  line-height: 1;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary-light); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--surface-hover); color: var(--primary); }
.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #dc2626; }
.btn-success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}
.btn-sm { padding: .4rem .75rem; font-size: .8rem; }
.btn-lg { padding: .85rem 1.5rem; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon {
  padding: .5rem;
  border-radius: var(--radius-sm);
}

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.card-body { padding: 1.5rem; }
.card-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); }

/* ── Formularios ──────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; }
.form-label {
  display: block;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: .4rem;
}
.form-control {
  width: 100%;
  padding: .7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  color: var(--text-primary);
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239ca3af' d='M1 1l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: .3rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ── Alertas ─────────────────────────────────────────────────────────────── */
.alert {
  padding: .8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}
.alert-error   { background: #fef2f2; border-color: #fecaca; color: #dc2626; }
.alert-success { background: #f0fdf4; border-color: #bbf7d0; color: #16a34a; }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: #d97706; }
.alert-info    { background: #eff6ff; border-color: #bfdbfe; color: #2563eb; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .6rem;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 500;
  line-height: 1;
}
.badge-primary { background: var(--primary-light); color: var(--primary-dark); }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-muted   { background: #f3f4f6; color: var(--text-muted); }
.badge-shared  { background: #e0f2fe; color: #075985; }

/* ── Grid de archivos ────────────────────────────────────────────────────── */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  animation: fadeIn .3s ease;
}
@media (max-width: 480px) {
  .file-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: .75rem; }
}

.file-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.file-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-focus);
}
.file-card-thumb {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #f0f4ff, #f8faff);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.file-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.file-card:hover .file-card-thumb img { transform: scale(1.04); }
.file-icon-large { font-size: 3rem; line-height: 1; }
.video-thumb { cursor: pointer; }
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background: rgba(0,0,0,.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  backdrop-filter: blur(4px);
  transition: background var(--transition), transform var(--transition);
}
.file-card:hover .play-btn { background: var(--primary); transform: translate(-50%,-50%) scale(1.1); }

.file-card-info {
  padding: .75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}
.file-name {
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}
.file-meta {
  font-size: .75rem;
  color: var(--text-muted);
}
.file-card-actions {
  padding: .5rem .75rem .75rem;
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
}

/* Carpeta card */
.folder-card { cursor: pointer; }
.folder-thumb {
  background: linear-gradient(135deg, var(--primary-light) 0%, #e0e7ff 100%);
}
.folder-thumb .file-icon-large { font-size: 2.5rem; }

/* ── Admin: tarjetas de carpeta más grandes ─────────────────────────────── */
.folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.folder-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  display: flex;
  align-items: center;
  gap: .85rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}
.folder-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.folder-item-icon { font-size: 2rem; flex-shrink: 0; }
.folder-item-info { flex: 1; min-width: 0; }
.folder-item-name {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.folder-item-meta { font-size: .75rem; color: var(--text-muted); }
.folder-item-actions {
  display: flex;
  gap: .25rem;
  flex-shrink: 0;
}

/* ── Breadcrumbs ─────────────────────────────────────────────────────────── */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: .3rem;
  font-size: .85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}
.breadcrumbs a { color: var(--primary); transition: color var(--transition); }
.breadcrumbs a:hover { color: var(--primary-dark); }
.breadcrumbs .sep { color: var(--text-light); }
.breadcrumbs .current { color: var(--text-secondary); font-weight: 500; }

/* ── Page header ─────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.page-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}
.page-actions {
  display: flex;
  gap: .5rem;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Empty state ─────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}
.empty-icon { font-size: 3.5rem; margin-bottom: 1rem; opacity: .6; }
.empty-state p { font-size: .95rem; }

/* ── Modales ──────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn .2s ease;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  animation: fadeUp .25s ease;
  position: relative;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.5rem 0;
}
.modal-title { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); }
.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: .2rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}
.modal-close:hover { color: var(--danger); }
.modal-body { padding: 1.5rem; }
.modal-footer {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  gap: .75rem;
  justify-content: flex-end;
}

/* Modal de visor */
.viewer-modal {
  max-width: 92vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  background: #0f0f0f;
  border-radius: var(--radius-xl);
}
.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  color: #fff;
}
.viewer-header .modal-close { color: #aaa; }
.viewer-header .modal-close:hover { color: #fff; }
.viewer-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0 1rem;
  overflow: hidden;
}
.viewer-body img {
  max-width: 88vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
}
.viewer-body video {
  max-width: 88vw;
  max-height: 80vh;
  border-radius: 4px;
}
.viewer-body iframe {
  width: 86vw;
  height: 78vh;
  border: none;
  border-radius: 4px;
  background: #fff;
}

/* ── Upload area (legacy desktop drag, mantenido para compatibilidad) ────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--bg);
  position: relative;
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}
/* El input dentro de upload-area NO debe interceptar clics en iOS */
.upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  /* En iOS: dejar que el click pase al label en vez del input oculto */
  pointer-events: none;
}
.upload-icon { font-size: 2.5rem; margin-bottom: .75rem; color: var(--primary); }
.upload-text { font-size: .95rem; color: var(--text-secondary); }
.upload-hint { font-size: .8rem; color: var(--text-muted); margin-top: .3rem; }

/* Progreso de subida */
.upload-progress-list { margin-top: 1rem; display: flex; flex-direction: column; gap: .5rem; }
.upload-progress-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem .85rem;
}
.upload-progress-name { font-size: .85rem; font-weight: 500; margin-bottom: .35rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.progress-bar-wrap { height: 6px; background: var(--border); border-radius: 4px; overflow: hidden; }
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width .3s ease;
  width: 0%;
}
.upload-progress-status { font-size: .75rem; color: var(--text-muted); margin-top: .25rem; }
.upload-progress-status.done { color: var(--success); }
.upload-progress-status.error { color: var(--danger); }

/* ── Admin layout ─────────────────────────────────────────────────────────── */
.admin-wrap {
  display: flex;
  min-height: calc(100vh - var(--topbar-h));
}
.admin-sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  flex-shrink: 0;
  padding: 1.5rem 0;
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
}
.sidebar-section { margin-bottom: 1.5rem; }
.sidebar-label {
  padding: .2rem 1.25rem .4rem;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .6rem 1.25rem;
  color: var(--text-secondary);
  font-size: .9rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
  border-radius: 0;
}
.sidebar-link:hover { background: var(--surface-hover); color: var(--primary); }
.sidebar-link.active { background: var(--primary-light); color: var(--primary-dark); font-weight: 600; }
.sidebar-link i { font-size: 1.1rem; flex-shrink: 0; }

.admin-main { flex: 1; padding: 2rem; min-width: 0; }

/* Stats cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.stat-icon { font-size: 1.8rem; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); line-height: 1; }
.stat-label { font-size: .8rem; color: var(--text-muted); }

/* ── Tabla ────────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th {
  text-align: left;
  padding: .75rem 1rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
td {
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface-hover); }
.td-name { font-weight: 500; color: var(--text-primary); }
.td-thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 6px;
  background: var(--bg);
  flex-shrink: 0;
}

/* ── Toggle switch ────────────────────────────────────────────────────────── */
.toggle-wrap { display:flex; align-items:center; gap:.5rem; }
.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}
.toggle input { opacity:0; width:0; height:0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 50px;
  cursor: pointer;
  transition: background var(--transition);
}
.toggle-slider::before {
  content:'';
  position:absolute;
  width:16px;
  height:16px;
  left:3px;
  top:3px;
  background:#fff;
  border-radius:50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}
.toggle input:checked + .toggle-slider { background: var(--success); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }

/* ── Share card ──────────────────────────────────────────────────────────── */
.share-link-box {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem .85rem;
}
.share-link-url {
  flex: 1;
  font-size: .82rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.copy-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: .35rem .75rem;
  border-radius: 6px;
  font-size: .78rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition);
}
.copy-btn:hover { background: var(--primary-dark); }
.copy-btn.copied { background: var(--success); }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  pointer-events: none;
}
.toast {
  background: var(--text-primary);
  color: #fff;
  padding: .75rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: .88rem;
  box-shadow: var(--shadow-lg);
  animation: slideInRight .3s ease;
  pointer-events: auto;
  max-width: 320px;
}
.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }
.toast.warning { background: var(--warning); color: #000; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  font-size: .8rem;
  color: var(--text-muted);
}

/* ── Password form (share/folder) ────────────────────────────────────────── */
.share-password-card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 420px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

/* ── Dropdown menú contextual ────────────────────────────────────────────── */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  min-width: 160px;
  overflow: hidden;
  animation: fadeUp .15s ease;
}
.dropdown.open .dropdown-menu { display: block; }
.dropdown-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1rem;
  font-size: .88rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.dropdown-item:hover { background: var(--surface-hover); color: var(--primary); }
.dropdown-item.danger:hover { background: var(--danger-light); color: var(--danger); }
.dropdown-sep { height: 1px; background: var(--border); margin: .25rem 0; }

/* ── Checkbox custom ─────────────────────────────────────────────────────── */
.check-label {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .9rem;
  cursor: pointer;
}
.check-label input[type="checkbox"] { accent-color: var(--primary); width:16px; height:16px; }

/* ── Responsive admin ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .admin-sidebar { display: none; }
  .admin-main    { padding: 1rem; }
  .stats-grid    { grid-template-columns: 1fr 1fr; }
  .file-grid     { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .folder-grid   { grid-template-columns: 1fr; }
  .page-header   { flex-direction: column; align-items: flex-start; }
  .topbar-search { display: none; }
}

/* ── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}

/* ── Floating action button (móvil) ──────────────────────────────────────── */
.fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(79,70,229,.4);
  cursor: pointer;
  z-index: 100;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.fab:hover { background: var(--primary-dark); transform: scale(1.07); }
.fab:active { transform: scale(.95); }

/* ── Mobile search toggle ────────────────────────────────────────────────── */
.mobile-search-btn { display: none; }
@media (max-width: 768px) {
  .mobile-search-btn { display: inline-flex; }
}

/* ── Miniatura en línea ───────────────────────────────────────────────────── */
.inline-thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 6px;
  background: var(--bg);
}

/* ── Highlight en búsqueda ───────────────────────────────────────────────── */
mark {
  background: #fef08a;
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

/* ── Separadores de sección ──────────────────────────────────────────────── */
.section-sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Nuevo: portada de carpeta en header ─────────────────────────────────── */
.folder-hero {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}

/* ── Quick actions admin ─────────────────────────────────────────────────── */
.quick-actions {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

/* ── Vista lista ─────────────────────────────────────────────────────────── */
.file-list { display: flex; flex-direction: column; gap: 0; }
.file-list-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .85rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.file-list-item:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; border-top: 1px solid var(--border); }
.file-list-item:last-child  { border-radius: 0 0 var(--radius-md) var(--radius-md); }
.file-list-item:hover { background: var(--surface-hover); }
.file-list-icon { font-size: 1.6rem; flex-shrink: 0; width: 36px; text-align: center; }
.file-list-name { flex: 1; font-weight: 500; font-size: .9rem; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-list-meta { font-size: .78rem; color: var(--text-muted); flex-shrink: 0; }
.file-list-actions { display: flex; gap: .3rem; flex-shrink: 0; }

/* ── Upload source buttons (iOS-friendly) ────────────────────────────────── */
.upload-source-btns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
}
@media (max-width: 480px) {
  .upload-source-btns { grid-template-columns: 1fr; gap: .6rem; }
}
.upload-source-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: 1.4rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition),
              color var(--transition), transform .1s;
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
  /* En iOS, los labels sobre inputs hidden necesitan esto: */
  -webkit-tap-highlight-color: transparent;
}
.upload-source-btn:hover,
.upload-source-btn:active {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: scale(.98);
}
.upload-source-btn span:first-of-type {
  font-size: .9rem;
  font-weight: 600;
}
.upload-source-hint {
  font-size: .75rem !important;
  font-weight: 400 !important;
  color: var(--text-muted);
}
.upload-source-btn--drop.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
  border-style: dashed;
}

/* ── Scrollbar sutil ─────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }