:root {
  --pri: #6366F1;
  --pri-d: #4F46E5;
  --pri-light: #EEF2FF;
  --pri-soft: rgba(99, 102, 241, 0.1);
  --pri-glow: rgba(99, 102, 241, 0.2);
  --grad-a: #6366F1;
  --grad-b: #8B5CF6;

  --bg: #F1F5F9;
  --bg-soft: #EEF2FF;
  --card: #ffffff;
  --text: #0F172A;
  --sub: #64748B;
  --border: #E2E8F0;
  --ok: #10B981;
  --ok-light: #D1FAE5;
  --danger: #EF4444;
  --danger-light: #FEE2E2;

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 20px rgba(99, 102, 241, 0.15);

  --radius: 12px;
}

[data-theme="dark"] {
  --pri: #818CF8;
  --pri-d: #6366F1;
  --pri-light: #1E1B4B;
  --pri-soft: rgba(129, 140, 248, 0.14);
  --pri-glow: rgba(129, 140, 248, 0.25);
  --grad-a: #6366F1;
  --grad-b: #A78BFA;

  --bg: #0B1220;
  --bg-soft: #111827;
  --card: #1E293B;
  --text: #E2E8F0;
  --sub: #94A3B8;
  --border: #334155;
  --ok: #34D399;
  --ok-light: rgba(52, 211, 153, 0.15);
  --danger: #F87171;
  --danger-light: rgba(248, 113, 113, 0.15);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { min-height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.2s, color 0.2s;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ── Logo (mask con currentColor) ────────────────────────────────────── */
.brand-logo {
  width: 28px; height: 28px;
  display: inline-block;
  background: currentColor;
  -webkit-mask: url(/logo.svg) center / contain no-repeat;
          mask: url(/logo.svg) center / contain no-repeat;
  flex: 0 0 auto;
}

/* ── Header ──────────────────────────────────────────────────────────── */
.hdr {
  background: linear-gradient(135deg, var(--grad-a) 0%, var(--grad-b) 100%);
  color: #fff;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}
.hdr-left { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.hdr-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700;
  color: #fff;
}
.brand-name { letter-spacing: 0.3px; }

.hdr-nav {
  display: flex; align-items: center; gap: 4px;
  background: rgba(255, 255, 255, 0.14);
  padding: 4px; border-radius: 999px;
}
.nav-tab {
  padding: 6px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  cursor: pointer; user-select: none;
  transition: background 0.15s, color 0.15s;
}
.nav-tab:hover:not(.active) { background: rgba(255, 255, 255, 0.15); color: #fff; }
.nav-tab.active {
  background: #fff; color: var(--pri-d);
  cursor: default; pointer-events: none;
}

.hdr-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.user-badge {
  background: rgba(255, 255, 255, 0.18);
  padding: 4px 12px 4px 4px;
  border: 0; border-radius: 999px;
  font-size: 13px; color: #fff;
  display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer;
  transition: background 0.15s;
}
.user-badge:hover { background: rgba(255, 255, 255, 0.28); }
.user-badge .avatar {
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.25); color: #fff;
  border-radius: 50%; font-weight: 700; font-size: 12px;
}

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 8px; border: none;
  font-size: 13px; font-weight: 600;
  transition: opacity .15s, transform .1s, background .15s;
  font-family: inherit;
}
.btn:hover { opacity: .9; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.18); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.28);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.28); }
.btn-sec { background: var(--pri-light); color: var(--pri-d); }
.btn-pri { background: var(--pri); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-cancel { background: var(--bg); color: var(--text); border: 1px solid var(--border); }

/* ── Breadcrumb ──────────────────────────────────────────────────────── */
.bc {
  background: var(--card);
  padding: 10px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--sub);
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
}
.bc a { color: var(--pri); font-weight: 500; }
.bc a:hover { text-decoration: underline; }
.bc-sep { color: var(--border); margin: 0 4px; }
.bc-current { color: var(--text); font-weight: 600; }

/* ── Admin bar ───────────────────────────────────────────────────────── */
.admin-bar {
  padding: 10px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.admin-hint { color: var(--sub); font-size: 12px; margin-left: auto; }

/* ── Grid ────────────────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
  padding: 24px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 20px 12px 14px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  text-align: center;
  transition: transform .12s, box-shadow .12s, border-color .12s;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  min-height: 130px;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--pri);
}
.card.folder { background: var(--pri-light); }
.card.file { background: var(--card); }
.card.visto { background: var(--ok-light); border-color: rgba(16, 185, 129, 0.35); }
.card-emoji { font-size: 40px; line-height: 1; }
.card-name {
  font-size: 12.5px; font-weight: 600;
  word-break: break-word; max-width: 100%;
  overflow: hidden; text-overflow: ellipsis;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.card-meta { font-size: 11px; color: var(--sub); }
.visto-tick {
  position: absolute; top: 8px; right: 8px;
  width: 26px; height: 26px;
  border-radius: 50%;
  padding: 0;
  border: 2px solid var(--border);
  background: var(--card);
  color: transparent;
  font-size: 15px; font-weight: 800;
  line-height: 22px; text-align: center;
  cursor: pointer;
  transition: background .12s, border-color .12s, transform .1s, color .12s;
  z-index: 2;
}
.visto-tick:hover { transform: scale(1.08); border-color: var(--ok); }
.visto-tick.off:hover .visto-tick-check::before {
  content: "✓"; color: var(--ok); opacity: .5;
}
.visto-tick.on { background: var(--ok); border-color: var(--ok); color: #fff; }
.visto-tick.on:hover { background: #059669; border-color: #059669; }
.visto-tick-check { display: block; line-height: 22px; }
.card-actions {
  position: absolute; top: 6px; left: 6px;
  display: flex; gap: 4px;
  opacity: 0; transition: opacity .12s;
}
.card:hover .card-actions { opacity: 1; }
.card-btn {
  background: var(--card);
  border: 1px solid var(--border);
  width: 24px; height: 24px; padding: 0;
  font-size: 12px; line-height: 22px;
  border-radius: 6px;
  color: var(--text);
}
.card-btn:hover { background: var(--bg-soft); border-color: var(--pri); }
.card-btn.del:hover { background: var(--danger-light); border-color: var(--danger); }

.empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--sub);
}
.empty-ico { font-size: 48px; margin-bottom: 10px; }

/* ── Modales ─────────────────────────────────────────────────────────── */
.overlay {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .55);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999; padding: 20px;
}
.overlay.hidden { display: none; }
.modal {
  background: var(--card); color: var(--text); border-radius: 16px;
  padding: 24px 26px; width: 100%; max-width: 440px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .3);
}
.modal h3 { font-size: 17px; margin-bottom: 12px; }
.modal p { font-size: 14px; color: var(--sub); margin-bottom: 16px; word-break: break-word; }
.modal input, .modal select {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; margin-bottom: 16px;
  background: var(--card); color: var(--text);
}
.modal input:focus, .modal select:focus {
  outline: 2px solid var(--pri); border-color: var(--pri);
}
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

/* ── Config sections ─────────────────────────────────────────────────── */
.config-section { margin-bottom: 16px; }
.config-section h4 {
  font-size: 12px; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--sub); margin-bottom: 10px;
}
.theme-toggle { display: flex; gap: 8px; flex-wrap: wrap; }
.theme-option {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  background: var(--bg-soft);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  font-size: 13px; font-weight: 500;
  color: var(--text); cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.theme-option input { display: none; }
.theme-option:has(input:checked) {
  background: var(--pri-soft);
  border-color: var(--pri);
  color: var(--pri-d);
  font-weight: 700;
}
.small { font-size: 12.5px; }
.muted { color: var(--sub); }

/* ── Toast ───────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 10px 18px; border-radius: 999px;
  font-size: 13px; font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
  animation: toast-in .2s ease-out;
  z-index: 10000;
}
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 10px); } }

/* ── Menú contextual ─────────────────────────────────────────────────── */
.ctx-menu {
  position: fixed; z-index: 9998;
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 6px; min-width: 180px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
  color: var(--text);
}
.ctx-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 6px;
  font-size: 13px; cursor: pointer;
}
.ctx-item:hover { background: var(--pri-soft); }
.ctx-item.danger:hover { background: var(--danger-light); color: var(--danger); }
.ctx-sep { height: 1px; background: var(--border); margin: 4px 0; }