/* ===================================================================
   Tema oscuro. Los colores de estado (pendiente / hecha / vencida)
   estan subidos de saturacion a proposito para que se lean de un vistazo.
   =================================================================== */

:root {
  /* Fondos */
  --bg: #0e1016;
  --bg-elev: #171a23;
  --card: #1b1f2b;
  --card-hover: #222736;

  /* Texto */
  --text: #e9ecf4;
  --text-soft: #c3cad9;
  --muted: #8b93a7;

  /* Bordes */
  --border: #2b3140;
  --border-soft: #232838;

  /* Acento */
  --accent: #6d7cff;
  --accent-dark: #5563f0;
  --accent-soft: rgba(109, 124, 255, 0.15);

  /* Estado: pendiente (ambar) */
  --pending: #ffb020;
  --pending-bg: rgba(255, 176, 32, 0.10);
  --pending-bg-strong: rgba(255, 176, 32, 0.16);
  --pending-text: #ffcb63;

  /* Estado: hecha (verde) */
  --done: #22d38a;
  --done-bg: rgba(34, 211, 138, 0.10);
  --done-text: #63e2ab;

  /* Estado: vencida (rojo) */
  --danger: #ff5a6a;
  --danger-bg: rgba(255, 90, 106, 0.12);
  --danger-text: #ff8b96;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* ---------------- Barra superior ---------------- */

.topbar {
  background: var(--bg-elev);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.topbar h1 { margin: 0; font-size: 1.3rem; }

.tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.tab-btn:hover { background: var(--card-hover); color: var(--text); }

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
}

.btn-ghost {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-soft);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------------- Layout ---------------- */

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
}

.section-header h2 { margin: 0; font-size: 1.1rem; }

/* ---------------- Botones ---------------- */

.btn-primary, .btn-secondary, .btn-danger {
  border: none;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
}

.btn-primary { background: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  background: var(--card-hover);
  color: var(--text-soft);
  border: 1px solid var(--border);
  margin-right: 0.5rem;
}
.btn-secondary:hover { color: var(--text); }

.btn-danger {
  background: transparent;
  color: var(--danger-text);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: var(--danger-bg); }

/* ---------------- Listas ---------------- */

.task-list, .project-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ---------------- Tarjeta de tarea ---------------- */

.task-card {
  background: var(--card);
  border: 1px solid var(--border-soft);
  border-left: 6px solid var(--pending);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.08s;
}

.task-card:hover {
  background: var(--card-hover);
  transform: translateX(2px);
}

/* Pendiente con fecha vencida: rojo, imposible de pasar por alto */
.task-card.overdue {
  border-left-color: var(--danger);
  background: linear-gradient(90deg, var(--danger-bg) 0%, var(--card) 60%);
}

/* Hecha: verde, atenuada */
.task-card.done {
  border-left-color: var(--done);
  background: linear-gradient(90deg, var(--done-bg) 0%, var(--card) 60%);
  opacity: 0.72;
}

.task-card.done:hover { opacity: 1; }

.task-card input[type="checkbox"] {
  width: 21px;
  height: 21px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--done);
}

.task-info { flex: 1; min-width: 0; }

.task-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.3rem;
}

.task-title {
  font-weight: 600;
  font-size: 0.98rem;
  margin: 0;
  color: var(--text);
}

.task-title.done {
  text-decoration: line-through;
  text-decoration-color: var(--done);
  text-decoration-thickness: 2px;
  color: var(--muted);
}

/* Chip de estado: PENDIENTE / VENCIDA / HECHA */
.status-chip {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.16rem 0.5rem;
  border-radius: 999px;
  border: 1px solid;
  white-space: nowrap;
}

.status-chip.pending {
  color: var(--pending-text);
  background: var(--pending-bg-strong);
  border-color: var(--pending);
}

.status-chip.done {
  color: var(--done-text);
  background: var(--done-bg);
  border-color: var(--done);
}

.status-chip.overdue {
  color: var(--danger-text);
  background: var(--danger-bg);
  border-color: var(--danger);
}

.task-meta {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.task-desc { color: var(--text-soft); }

.task-overdue { color: var(--danger-text); font-weight: 600; }

.task-pending-box {
  margin-top: 0.5rem;
  background: var(--pending-bg);
  border: 1px solid var(--pending);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.task-pending-box strong { color: var(--pending-text); }

.task-updated-by {
  font-size: 0.74rem;
  color: var(--muted);
  font-style: italic;
  margin-top: 0.4rem;
}

/* ---------------- Tarjeta de proyecto ---------------- */

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 6px solid var(--accent);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.project-card:hover { background: var(--card-hover); }

.project-card-info { flex: 1; min-width: 0; }
.project-card h3 { margin: 0 0 0.25rem 0; font-size: 1rem; }
.project-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.project-stats {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 0.12rem 0.55rem;
  font-size: 0.74rem;
  font-weight: 600;
  border: 1px solid;
  background: var(--pending-bg-strong);
  border-color: var(--pending);
  color: var(--pending-text);
}

.badge.all-done {
  background: var(--done-bg);
  border-color: var(--done);
  color: var(--done-text);
}

.badge.empty {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}

.btn-icon {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  flex-shrink: 0;
  line-height: 1;
}

.btn-icon:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger-text);
}

/* ---------------- Estado vacío ---------------- */

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 2.5rem 1rem;
  font-size: 0.95rem;
  border: 1px dashed var(--border);
  border-radius: 10px;
}

/* ---------------- Modales ---------------- */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 12, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.modal.hidden { display: none; }

.modal-content {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.modal-content h3 { margin-top: 0; color: var(--text); }

.modal-content form { display: flex; flex-direction: column; gap: 0.75rem; }

.modal-content label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.modal-content input[type="text"],
.modal-content input[type="password"],
.modal-content input[type="date"],
.modal-content select,
.modal-content textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.55rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
}

.modal-content input:focus,
.modal-content select:focus,
.modal-content textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.modal-content input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
  cursor: pointer;
}

.checkbox-row {
  flex-direction: row !important;
  align-items: center;
  gap: 0.5rem !important;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--done);
  cursor: pointer;
}

.hint { font-weight: normal; font-size: 0.75rem; color: var(--muted); }

.hint-block {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
  margin: 0 0 0.9rem 0;
}

.hint-block code {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
  font-size: 0.8rem;
  color: var(--pending-text);
}

.error-msg { color: var(--danger-text); font-size: 0.85rem; }
.error-msg.hidden { display: none; }

.modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

.unlock-box { max-width: 430px; }

/* ---------------- Varios ---------------- */

.sync-note {
  position: fixed;
  bottom: 0.75rem;
  right: 0.75rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.72rem;
  color: var(--muted);
  pointer-events: none;
}

.toast {
  position: fixed;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--danger);
  color: #fff;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  font-size: 0.88rem;
  z-index: 100;
  max-width: 90vw;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #3a4256; }

@media (max-width: 600px) {
  main { padding: 1rem; }
  .topbar { padding: 0.85rem 1rem; }
  .section-header { flex-direction: column; align-items: stretch; }
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.topbar-actions a.btn-ghost {
  text-decoration: none;
  display: inline-block;
}

/* ---------------- Apartado de cada proyecto ---------------- */

.oculto { display: none !important; }

.btn-back {
  margin-bottom: 1rem;
  background: transparent;
}

.detail-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.detail-title { min-width: 0; }
.detail-title h2 { margin: 0 0 0.2rem 0; font-size: 1.35rem; }
.detail-title p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.detail-stats {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.detail-done-count { color: var(--done-text); }

/* Interruptor compartido / privado */
.share-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--done);
  border-radius: 9px;
  padding: 0.7rem 0.9rem;
  margin-bottom: 1rem;
  cursor: pointer;
}

#project-detail.is-private .share-row { border-left-color: var(--muted); }

.share-row input[type="checkbox"] {
  width: 19px;
  height: 19px;
  margin-top: 1px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--done);
}

.share-text {
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.5;
}

.share-text b { color: var(--text); }

/* La advertencia de "queda privado" solo se muestra mientras está compartido */
.share-off { color: var(--muted); }
#project-detail.is-private .share-off { display: none; }

/* ---------------- Tarjeta de proyecto: clickeable ---------------- */

.project-card { cursor: pointer; transition: background 0.15s, border-color 0.15s; }
.project-card:hover { border-color: var(--accent); }
.project-card.is-private { border-left-color: var(--muted); }

.project-card-actions {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-shrink: 0;
}

.project-open {
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0 0.2rem;
}

.project-card:hover .project-open { color: var(--accent); }

.badge.shared {
  background: var(--done-bg);
  border-color: var(--done);
  color: var(--done-text);
}

.badge.private {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}