/* Estilo compartido: modo oscuro tipo macOS/iOS con vidrio (ver ESTILO_DISENO.md) */
* { box-sizing: border-box; }
:root {
  --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
  --bg: #1c1c1e; --card: #2c2c2e; --card-light: #3a3a3c; --border: #48484a;
  --text: #f5f5f7; --muted: #98989d;
  --green: #22c55e; --red: #ef4444; --cyan: #06b6d4; --yellow: #eab308;
  --glass: rgba(44,44,46,0.6); --glass-strong: rgba(58,58,60,0.78); --glass-border: rgba(255,255,255,0.09);
  --blur: blur(20px) saturate(160%);
}
html, body { overflow-x: hidden; }
body {
  margin: 0; min-width: 320px; min-height: 100vh;
  font-family: system-ui, sans-serif; font-size: 13px; color: var(--text);
  -webkit-font-smoothing: antialiased; font-variant-numeric: tabular-nums;
  background: #1c1c1e;
  background-image:
    radial-gradient(1100px 700px at 8% -8%, rgba(6,182,212,0.08), transparent 60%),
    radial-gradient(900px 620px at 100% 0%, rgba(234,179,8,0.05), transparent 55%);
  background-attachment: fixed;
}
a { color: var(--cyan); text-decoration: none; }
button { font-family: inherit; }
button, a, input, select, textarea, [role="button"] { touch-action: manipulation; }
button:not(:disabled) { transition: transform 140ms var(--ease-spring), background 140ms; }
button:not(:disabled):active { transform: scale(0.96); }
button:disabled { opacity: 0.4; cursor: default; }
i.ph-duotone { vertical-align: -0.15em; }

@keyframes glassIn { from { opacity: 0; transform: scale(0.97) translateY(3px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.wrap { max-width: 980px; margin: 0 auto; padding: 24px 20px 70px; }
.wrap.ancho { max-width: 1400px; }
h1 { font-size: 22px; margin: 0 0 4px; font-weight: 650; letter-spacing: -0.01em; }
h2 { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 0; font-weight: 600; }
.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; line-height: 1.5; }
.muted { color: var(--muted); }

/* Vidrio */
.glass {
  background: var(--glass); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border); border-radius: 18px; padding: 14px 16px; margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.28), 0 1px 2px rgba(0,0,0,0.2);
  animation: glassIn 420ms var(--ease-spring) both;
}
.glass.centro { max-width: 480px; margin: 40px auto; text-align: center; padding: 28px 24px; border-radius: 22px; }

/* Barra superior */
.topbar {
  position: sticky; top: 0; z-index: 80; display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 11px 16px; background: var(--glass-strong); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
}
.topbar .grow { flex: 1; }
.topbar a.volver { color: var(--text); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }

/* Controles */
.btn {
  background: var(--cyan); color: #fff; border: none; border-radius: 10px; padding: 7px 14px;
  cursor: pointer; font-size: 12px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
}
.btn:hover { filter: brightness(1.1); }
.btn.sm { padding: 4px 9px; font-size: 11px; }
.btn.sec { background: var(--card-light); color: var(--text); border: 1px solid var(--border); }
.btn.sec:hover { background: #444446; filter: none; }
.btn.rojo { background: var(--red); }
.btn.amarillo { background: var(--yellow); color: #0f172a; }
.btn.grande { width: 100%; justify-content: center; padding: 13px; font-size: 14px; border-radius: 14px; }
.input, input[type="text"], input[type="password"], select {
  background: var(--card-light); border: 1px solid var(--border); color: var(--text); border-radius: 8px;
  padding: 8px 10px; font-size: 13px; width: 100%; font-family: inherit;
}
select { width: auto; cursor: pointer; padding: 6px 10px; }
input:focus, select:focus { outline: none; border-color: var(--cyan); }
input[type="checkbox"] { accent-color: var(--cyan); cursor: pointer; }
.badge { background: #ffffff14; color: var(--muted); border-radius: 7px; padding: 2px 7px; font-size: 11px; font-weight: 600; display: inline-block; }
.badge.completo, .badge.listo { background: rgba(34,197,94,0.15); color: var(--green); }
.badge.subiendo, .badge.leyendo, .badge.comparando, .badge.contando { background: rgba(6,182,212,0.15); color: var(--cyan); }
.badge.pausado { background: rgba(234,179,8,0.15); color: var(--yellow); }
.badge.cancelado { background: rgba(239,68,68,0.15); color: var(--red); }
.barra { background: rgba(0,0,0,0.35); border-radius: 6px; height: 6px; overflow: hidden; }
.barra > div { height: 100%; background: linear-gradient(90deg, #0891b2, var(--cyan)); border-radius: 6px; transition: width .4s var(--ease-spring); }

/* Versión (esquina inferior izquierda) */
#version { position: fixed; left: 10px; bottom: 8px; font-size: 11px; color: var(--muted); z-index: 5; pointer-events: none; }

/* ===== Explorador de carpetas (columnas estilo Finder + árbol desplegable) ===== */
.exp { background: rgba(28,28,30,0.55); border: 1px solid var(--glass-border); border-radius: 14px; overflow: hidden; }
.exp-barra { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 10px;
  background: rgba(58,58,60,0.55); border-bottom: 1px solid var(--glass-border); flex-wrap: wrap; }
.exp-ruta { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; min-width: 120px; }
.exp-vistas { display: flex; gap: 2px; background: rgba(0,0,0,0.3); border-radius: 9px; padding: 3px; }
.exp-vistas button { background: transparent; color: var(--muted); border: none; padding: 4px 10px; font-size: 12px; border-radius: 7px; cursor: pointer; }
.exp-vistas button.activa { background: var(--card-light); color: var(--text); }

.exp-columnas { display: flex; overflow-x: auto; height: var(--exp-alto, 460px); scroll-behavior: smooth; }
.exp-col { width: 270px; flex-shrink: 0; overflow-y: auto; border-right: 1px solid var(--glass-border); padding: 4px; }
.exp-col.ultima { width: 300px; }
.exp-fila { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 8px; cursor: pointer; font-size: 13px; min-height: 32px; }
.exp-fila:hover { background: rgba(255,255,255,0.06); }
.exp-fila.activa { background: var(--cyan); color: #fff; }
.exp-fila.activa .tam, .exp-fila.activa .flecha { color: rgba(255,255,255,0.85); }
.exp-fila.seleccionado { background: rgba(6,182,212,0.14); }
.exp-fila.resaltado { animation: pulso 1s ease-in-out 3; }
@keyframes pulso { 0%,100% { box-shadow: 0 0 0 0 rgba(6,182,212,0); } 50% { box-shadow: 0 0 0 3px rgba(6,182,212,0.7); } }
.exp-fila .nom { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exp-fila .tam { color: var(--muted); font-size: 11px; flex-shrink: 0; }
.exp-fila .flecha { color: var(--muted); flex-shrink: 0; }
.exp-fila .ico { font-size: 17px; flex-shrink: 0; }
.exp-fila .ico.carpeta { color: var(--cyan); }
.exp-fila.activa .ico.carpeta { color: #fff; }
.exp-fila .ico.archivo { color: var(--muted); }
.exp-vacio { color: var(--muted); padding: 20px; text-align: center; font-size: 12px; }

.exp-arbol { max-height: var(--exp-alto, 460px); overflow: auto; padding: 4px; }
.exp-arbol .exp-fila { min-width: max-content; }
.exp-arbol .hijos { margin-left: 18px; border-left: 1px solid var(--glass-border); padding-left: 4px; }
.exp-arbol .caret { width: 16px; text-align: center; color: var(--muted); flex-shrink: 0; transition: transform 160ms var(--ease-spring); }
.exp-arbol .abierta > .exp-fila .caret { transform: rotate(90deg); }

.exp-pie { padding: 6px 12px; border-top: 1px solid var(--glass-border); color: var(--muted); font-size: 12px; background: rgba(58,58,60,0.35); }

@media (max-width: 640px) {
  .wrap { padding: 16px 12px 70px; }
  .exp-col, .exp-col.ultima { width: 82vw; }
}
@media (prefers-reduced-motion: reduce) {
  button:not(:disabled) { transition: opacity 120ms ease; }
  button:not(:disabled):active { transform: none; }
  .glass, .exp-fila.resaltado { animation: none !important; }
}