:root {
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-alt: #eef0fb;
  --text: #1c1d2e;
  --text-muted: #6b6d85;
  --border: #e3e4f0;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-contrast: #ffffff;
  --danger: #dc2626;
  --success: #16a34a;
  --alta: #e11d48;
  --media: #d97706;
  --baja: #16a34a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(30, 30, 60, 0.08);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #14141f;
  --surface: #1d1e2c;
  --surface-alt: #262738;
  --text: #f1f1f7;
  --text-muted: #9a9bb3;
  --border: #303148;
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14141f;
    --surface: #1d1e2c;
    --surface-alt: #262738;
    --text: #f1f1f7;
    --text-muted: #9a9bb3;
    --border: #303148;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

#app {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(78px + env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: calc(16px + env(safe-area-inset-top)) 20px 12px;
}

.topbar h1 {
  font-size: 1.4rem;
  margin: 0;
  letter-spacing: -0.02em;
}

.today-date {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: capitalize;
}

.icon-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

#views { flex: 1; padding: 0 16px 24px; }

.view { display: none; }
.view.active { display: block; animation: fadein .15s ease; }

@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* --- Hoy / plan --- */
.summary-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.summary-text { font-size: 0.95rem; font-weight: 500; }
.progress-track {
  margin-top: 10px;
  background: rgba(255,255,255,0.25);
  border-radius: 8px;
  height: 8px;
  overflow: hidden;
}
.progress-fill { background: #fff; height: 100%; width: 0%; transition: width .3s ease; }

.quick-add {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.quick-add input[type=text] {
  flex: 1;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

.btn-primary, .btn-secondary, .btn-danger-outline {
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-secondary { background: var(--surface-alt); color: var(--text); border: 1px solid var(--border); }
.btn-danger-outline { background: transparent; color: var(--danger); border: 1px solid var(--danger); }

.plan-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.plan-item, .task-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cat-color, var(--border));
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  box-shadow: var(--shadow);
}

.cat-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

.plan-time {
  min-width: 52px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  padding-top: 2px;
  text-align: center;
}
.plan-item.out-of-hours .plan-time { color: var(--danger); }

.check-btn {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  color: transparent;
  font-size: 0.8rem;
}
.check-btn.checked { background: var(--success); border-color: var(--success); color: #fff; }

.item-body { flex: 1; min-width: 0; }
.item-title { font-weight: 600; font-size: 0.98rem; word-break: break-word; }
.item-title.done { text-decoration: line-through; color: var(--text-muted); }
.item-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }

.badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--text-muted);
}
.badge.prio-alta { background: color-mix(in srgb, var(--alta) 18%, transparent); color: var(--alta); }
.badge.prio-media { background: color-mix(in srgb, var(--media) 18%, transparent); color: var(--media); }
.badge.prio-baja { background: color-mix(in srgb, var(--baja) 18%, transparent); color: var(--baja); }
.badge.out { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }

.item-actions { display: flex; gap: 4px; flex-shrink: 0; }
.item-actions button {
  background: transparent;
  border: none;
  font-size: 1rem;
  padding: 4px 6px;
  cursor: pointer;
  border-radius: 8px;
  color: var(--text-muted);
}
.item-actions button:active { background: var(--surface-alt); }

.empty-state { text-align: center; padding: 40px 10px; color: var(--text-muted); }
.empty-sub { font-size: 0.85rem; }

/* --- Tareas --- */
.search-row { margin-bottom: 10px; }
.search-row input { width: 100%; }
.filter-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.chip {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 0.82rem;
  cursor: pointer;
}
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.chip.chip-alta.active { background: var(--alta); border-color: var(--alta); }
.chip.chip-media.active { background: var(--media); border-color: var(--media); }
.chip.chip-baja.active { background: var(--baja); border-color: var(--baja); }

.tasks-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

/* --- Agenda --- */
.agenda-nav {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px; font-weight: 600; text-transform: capitalize;
}
.agenda-unscheduled {
  display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 10px;
}
.agenda-unscheduled:empty { display: none; }
.unscheduled-chip {
  flex-shrink: 0;
  background: var(--surface-alt);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.82rem;
  cursor: pointer;
  max-width: 180px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.agenda-grid { display: flex; flex-direction: column; border-top: 1px solid var(--border); }
.agenda-row {
  display: flex;
  min-height: 52px;
  border-bottom: 1px solid var(--border);
}
.agenda-hour {
  width: 52px;
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 4px 6px 0 0;
  text-align: right;
}
.agenda-slot { flex: 1; padding: 4px 0; position: relative; }
.agenda-task {
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  margin-bottom: 3px;
}
.agenda-task.prio-alta { background: var(--alta); }
.agenda-task.prio-media { background: var(--media); }
.agenda-task.prio-baja { background: var(--baja); }

/* --- Papelera --- */
.trash-header { margin-bottom: 12px; display: flex; flex-direction: column; gap: 8px; }

/* --- Ajustes --- */
.settings-form { display: flex; flex-direction: column; gap: 18px; padding-bottom: 20px; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
legend { font-weight: 700; padding: 0 6px; }
.settings-form label { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; font-size: 0.88rem; color: var(--text-muted); }
.settings-form label:last-child { margin-bottom: 0; }
.row-between { flex-direction: row !important; align-items: center; justify-content: space-between; }
.hint { font-size: 0.78rem; color: var(--text-muted); margin: 4px 0 10px; }
.categories-list { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.category-tag { background: var(--surface-alt); border-radius: 999px; padding: 5px 6px 5px 10px; font-size: 0.8rem; display: flex; align-items: center; gap: 6px; }
.category-tag button { border: none; background: transparent; cursor: pointer; color: var(--text-muted); font-size: 0.9rem; }
.color-swatches { display: flex; gap: 4px; }
.color-swatch { width: 16px; height: 16px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; padding: 0; }
.color-swatch.active { border-color: var(--text); }
.settings-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.file-btn { display: inline-flex; align-items: center; cursor: pointer; margin: 0; }

/* --- Bottom nav --- */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  max-width: 520px;
  margin: 0 auto;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
  z-index: 10;
}
.nav-btn {
  background: none; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  color: var(--text-muted);
  font-size: 0.68rem;
  padding: 6px 8px;
  border-radius: 10px;
}
.nav-btn.active { color: var(--primary); font-weight: 600; }
.nav-ico { font-size: 1.15rem; }
.nav-fab {
  background: var(--primary);
  color: #fff;
  width: 48px; height: 48px;
  border-radius: 50%;
  justify-content: center;
  margin-top: -22px;
  box-shadow: 0 4px 14px rgba(79,70,229,0.4);
}
.nav-fab .nav-ico { font-size: 1.5rem; }

/* --- Modal --- */
dialog {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  width: min(94vw, 460px);
  max-height: 90dvh;
  background: var(--surface);
  color: var(--text);
}
dialog::backdrop { background: rgba(10,10,20,0.5); }
dialog form { padding: 20px; display: flex; flex-direction: column; gap: 12px; overflow-y: auto; max-height: 90dvh; }
dialog h2 { margin: 0 0 4px; font-size: 1.15rem; }
dialog label { display: flex; flex-direction: column; gap: 5px; font-size: 0.85rem; color: var(--text-muted); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.modal-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; }
.modal-actions-right { display: flex; gap: 8px; }

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: calc(90px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1c1d2e;
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 20;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.toast button { background: none; border: none; color: #a5b4fc; font-weight: 700; cursor: pointer; }