/* ============ Design tokens ============ */
:root {
  --qr-bg: #f5f4fb;
  --qr-surface: #ffffff;
  --qr-surface-2: #f0eefa;
  --qr-text: #1c1b29;
  --qr-text-secondary: #6b6880;
  --qr-border: #e6e4f2;
  --qr-primary: #6c5ce7;
  --qr-primary-rgb: 108, 92, 231;
  --qr-primary-2: #4834d4;
  --qr-accent: #ff6b9d;
  --qr-accent-rgb: 255, 107, 157;
  --qr-info: #00b8d9;
  --qr-info-rgb: 0, 184, 217;
  --qr-danger: #e74c3c;
  --qr-danger-rgb: 231, 76, 60;
  --qr-warning: #f5a623;
  --qr-warning-rgb: 245, 166, 35;
  --qr-success: #17b881;
  --qr-success-rgb: 23, 184, 129;
  --qr-low: #b2b2c2;
  --qr-shadow: 0 2px 12px rgba(28, 27, 41, 0.08);
  --qr-radius: 14px;
  --qr-topbar-h: 56px;
  --qr-bottomnav-h: 64px;
  --qr-quickadd-h: 64px;

  /* Category palette — cycled by hash of category name, js/app.js#categoryColorClass */
  --qr-cat0: #6c5ce7; --qr-cat0-bg: rgba(108, 92, 231, 0.14);
  --qr-cat1: #00b8d9; --qr-cat1-bg: rgba(0, 184, 217, 0.14);
  --qr-cat2: #ff6b9d; --qr-cat2-bg: rgba(255, 107, 157, 0.14);
  --qr-cat3: #f5a623; --qr-cat3-bg: rgba(245, 166, 35, 0.16);
  --qr-cat4: #17b881; --qr-cat4-bg: rgba(23, 184, 129, 0.14);
  --qr-cat5: #e74c3c; --qr-cat5-bg: rgba(231, 76, 60, 0.12);
  --qr-cat6: #0984e3; --qr-cat6-bg: rgba(9, 132, 227, 0.14);
  --qr-cat7: #a55eea; --qr-cat7-bg: rgba(165, 94, 234, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --qr-bg: #14131c;
    --qr-surface: #1e1c2a;
    --qr-surface-2: #262436;
    --qr-text: #f1f0f7;
    --qr-text-secondary: #a29fb5;
    --qr-border: #322f42;
    --qr-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
  }
}
:root[data-theme="dark"] {
  --qr-bg: #14131c;
  --qr-surface: #1e1c2a;
  --qr-surface-2: #262436;
  --qr-text: #f1f0f7;
  --qr-text-secondary: #a29fb5;
  --qr-border: #322f42;
  --qr-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
}

* { -webkit-tap-highlight-color: transparent; }

body {
  background: var(--qr-bg);
  color: var(--qr-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overscroll-behavior-y: none;
}

a, button { color: inherit; }

/* Gradient primary buttons throughout (Bootstrap override) */
.btn-primary {
  background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-primary-2) 100%);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(var(--qr-primary-rgb), 0.35);
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background: linear-gradient(135deg, var(--qr-primary-2) 0%, var(--qr-primary) 100%) !important;
  border-color: transparent !important;
  box-shadow: 0 6px 18px rgba(var(--qr-primary-rgb), 0.45);
}
.btn-outline-primary { border-color: var(--qr-primary); color: var(--qr-primary); }
.btn-outline-primary:hover { background: var(--qr-primary); border-color: var(--qr-primary); }
.btn-check:checked + .btn-outline-primary {
  background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-primary-2) 100%);
  border-color: transparent;
}
.btn-check:checked + .btn-outline-danger { background: var(--qr-danger); border-color: var(--qr-danger); color: #fff; }
.btn-check:checked + .btn-outline-warning { background: var(--qr-warning); border-color: var(--qr-warning); color: #fff; }
.btn-check:checked + .btn-outline-secondary { background: var(--qr-low); border-color: var(--qr-low); color: #fff; }

/* ============ Auth screen ============ */
.auth-screen {
  min-height: 100dvh;
  padding: 1.5rem;
  background: linear-gradient(160deg, var(--qr-primary) 0%, #4834d4 100%);
}
.auth-card {
  background: var(--qr-surface);
  color: var(--qr-text);
  border-radius: 20px;
  padding: 2rem 1.75rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.app-logo { font-size: 3rem; }
.app-logo-sm { font-size: 1.25rem; }
.topbar .fw-bold {
  background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============ App shell layout ============ */
.app-shell {
  min-height: 100dvh;
  padding-top: var(--qr-topbar-h);
  padding-bottom: calc(var(--qr-bottomnav-h) + var(--qr-quickadd-h) + env(safe-area-inset-bottom));
}

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--qr-topbar-h);
  background: var(--qr-surface);
  border-bottom: 1px solid var(--qr-border);
  z-index: 1030;
  box-shadow: inset 0 -3px 0 0 transparent;
}
.topbar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--qr-primary), var(--qr-accent), var(--qr-info));
  opacity: 0.9;
}

.btn-icon {
  background: transparent;
  border: none;
  font-size: 1.15rem;
  width: 40px; height: 40px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--qr-text);
}
.btn-icon:hover, .btn-icon:active { background: var(--qr-surface-2); }

.search-bar { background: var(--qr-surface); border-bottom: 1px solid var(--qr-border); position: fixed; top: var(--qr-topbar-h); left: 0; right: 0; z-index: 1025; }

/* Bottom nav (mobile) */
.app-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--qr-bottomnav-h);
  background: var(--qr-surface);
  border-top: 1px solid var(--qr-border);
  display: flex;
  z-index: 1030;
  padding-bottom: env(safe-area-inset-bottom);
}
.nav-item {
  flex: 1;
  background: transparent;
  border: none;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  font-size: 0.68rem;
  color: var(--qr-text-secondary);
  position: relative;
}
.nav-item i { font-size: 1.3rem; }
.nav-item.active { color: var(--qr-primary); }
.nav-badge {
  position: absolute;
  top: 2px; right: 22%;
  font-size: 0.6rem;
  background: linear-gradient(135deg, var(--qr-danger), #ff6b6b) !important;
}

/* Main content */
.app-main {
  padding: 0.75rem 1rem 1rem;
  max-width: 720px;
  margin: 0 auto;
}

/* Quick add bar (mobile: fixed above bottom nav) */
.quick-add-bar {
  position: fixed;
  left: 0; right: 0;
  bottom: var(--qr-bottomnav-h);
  background: var(--qr-surface);
  border-top: 1px solid var(--qr-border);
  padding: 0.5rem 0.75rem;
  z-index: 1029;
}
.quick-add-input {
  border-radius: 999px;
  background: var(--qr-surface-2);
  border: none;
  padding: 0.6rem 1rem;
}
.quick-add-input:focus { box-shadow: 0 0 0 3px rgba(var(--qr-primary-rgb), 0.25); background: var(--qr-surface); }
.mic-btn, .send-btn {
  width: 42px; height: 42px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  padding: 0;
}
.mic-btn { background: var(--qr-surface-2); border: none; color: var(--qr-text); }
.mic-btn.listening { background: var(--qr-danger); color: #fff; animation: pulse 1.2s infinite; }
.voice-indicator { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--qr-danger); padding-top: 0.35rem; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--qr-danger); animation: pulse 1.2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.6; transform: scale(1.15); } }
.send-btn.btn-primary { background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-accent) 100%); border: none; }

/* FAB */
.fab {
  position: fixed;
  right: 1.1rem;
  bottom: calc(var(--qr-bottomnav-h) + var(--qr-quickadd-h) + 1rem + env(safe-area-inset-bottom));
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-accent) 100%);
  color: #fff;
  border: none;
  font-size: 1.4rem;
  box-shadow: 0 8px 24px rgba(var(--qr-primary-rgb), 0.45);
  z-index: 1028;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.15s ease;
}
.fab:hover { transform: scale(1.06); }

/* ============ Dashboard header ============ */
.dashboard-header { padding: 0.5rem 0 1rem; }
.stats-row { flex-wrap: wrap; }
.stat-pill {
  background: var(--qr-surface-2);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid transparent;
}
.stat-pill span { color: var(--qr-primary); font-weight: 700; }
.stat-pill i { font-size: 0.9rem; }

.stat-today {
  background: rgba(var(--qr-primary-rgb), 0.12);
  border-color: rgba(var(--qr-primary-rgb), 0.2);
  color: var(--qr-primary);
}
.stat-today span { color: var(--qr-primary); }

.stat-overdue {
  background: rgba(var(--qr-danger-rgb), 0.12);
  border-color: rgba(var(--qr-danger-rgb), 0.22);
  color: var(--qr-danger);
}
.stat-overdue span { color: var(--qr-danger); }

.stat-upcoming {
  background: rgba(var(--qr-info-rgb), 0.12);
  border-color: rgba(var(--qr-info-rgb), 0.22);
  color: var(--qr-info);
}
.stat-upcoming span { color: var(--qr-info); }

.inbox-banner, .evening-review-banner {
  display: flex; align-items: center; gap: 0.6rem;
  background: linear-gradient(135deg, var(--qr-primary) 0%, var(--qr-primary-2) 100%);
  color: #fff;
  border-radius: var(--qr-radius);
  padding: 0.7rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.88rem;
  box-shadow: 0 6px 18px rgba(var(--qr-primary-rgb), 0.3);
}
.evening-review-banner { background: linear-gradient(135deg, #4834d4 0%, #2c2470 100%); box-shadow: 0 6px 18px rgba(72, 52, 212, 0.3); }

/* ============ Task sections & list ============ */
.task-section { margin-bottom: 1.25rem; }
.section-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--qr-text-secondary);
  display: flex; align-items: center; gap: 0.4rem;
  margin-bottom: 0.5rem;
}
.section-title.collapsible { cursor: pointer; user-select: none; }
.section-title .bi-chevron-right { transition: transform 0.15s; font-size: 0.7rem; }
.section-title.open .bi-chevron-right { transform: rotate(90deg); }

.task-list { display: flex; flex-direction: column; gap: 0.5rem; }

.task-item {
  background: var(--qr-surface);
  border: 1px solid var(--qr-border);
  border-radius: var(--qr-radius);
  padding: 0.65rem 0.75rem;
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  box-shadow: var(--qr-shadow);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.task-item:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(28, 27, 41, 0.12); }
.task-item.priority-important { border-left: 4px solid var(--qr-danger); }
.task-item.priority-normal { border-left: 4px solid var(--qr-warning); }
.task-item.priority-low { border-left: 4px solid var(--qr-low); }
.task-item.escalated { background: rgba(var(--qr-danger-rgb), 0.08); }
.task-item.done { opacity: 0.7; }
.task-item.done .task-title { text-decoration: line-through; color: var(--qr-text-secondary); }

/* Category badge palette — class assigned by js/app.js#categoryColorClass */
.cat-badge {
  border: none;
  font-weight: 600;
}
.cat-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 0.4rem; }
.cat-c0 { color: var(--qr-cat0); background: var(--qr-cat0-bg); } .cat-dot.cat-c0 { background: var(--qr-cat0); }
.cat-c1 { color: var(--qr-cat1); background: var(--qr-cat1-bg); } .cat-dot.cat-c1 { background: var(--qr-cat1); }
.cat-c2 { color: var(--qr-cat2); background: var(--qr-cat2-bg); } .cat-dot.cat-c2 { background: var(--qr-cat2); }
.cat-c3 { color: var(--qr-cat3); background: var(--qr-cat3-bg); } .cat-dot.cat-c3 { background: var(--qr-cat3); }
.cat-c4 { color: var(--qr-cat4); background: var(--qr-cat4-bg); } .cat-dot.cat-c4 { background: var(--qr-cat4); }
.cat-c5 { color: var(--qr-cat5); background: var(--qr-cat5-bg); } .cat-dot.cat-c5 { background: var(--qr-cat5); }
.cat-c6 { color: var(--qr-cat6); background: var(--qr-cat6-bg); } .cat-dot.cat-c6 { background: var(--qr-cat6); }
.cat-c7 { color: var(--qr-cat7); background: var(--qr-cat7-bg); } .cat-dot.cat-c7 { background: var(--qr-cat7); }

.task-checkbox {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid var(--qr-border);
  flex-shrink: 0;
  margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
}
.task-checkbox:hover { border-color: var(--qr-primary); }
.task-checkbox.checked { background: linear-gradient(135deg, var(--qr-success), #12a06f); border-color: transparent; color: #fff; }

.task-body { flex: 1; min-width: 0; }
.task-title { font-weight: 600; font-size: 0.95rem; word-break: break-word; }
.task-meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.25rem; font-size: 0.76rem; color: var(--qr-text-secondary); }
.task-meta .badge { font-weight: 500; }
.task-time { display: inline-flex; align-items: center; gap: 0.25rem; }
.task-reminder-icon { color: var(--qr-primary); }

.empty-state { text-align: center; padding: 2.5rem 1rem; color: var(--qr-text-secondary); }
.empty-emoji {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  width: 72px; height: 72px;
  line-height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(var(--qr-success-rgb), 0.16), rgba(var(--qr-primary-rgb), 0.16));
  margin-inline: auto;
}

.view-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; padding-top: 0.5rem; }

.upcoming-group { margin-bottom: 1.25rem; }
.upcoming-group-title { font-weight: 700; font-size: 0.85rem; text-transform: uppercase; color: var(--qr-text-secondary); margin-bottom: 0.5rem; }

/* Inbox quick-sort buttons */
.inbox-actions { display: flex; gap: 0.4rem; margin-top: 0.5rem; flex-wrap: wrap; }
.inbox-actions .btn { font-size: 0.76rem; padding: 0.25rem 0.6rem; }

/* Settings */
.settings-block {
  background: var(--qr-surface);
  border: 1px solid var(--qr-border);
  border-radius: var(--qr-radius);
  padding: 1rem;
  margin-bottom: 1rem;
}
.settings-block-title { font-size: 0.85rem; font-weight: 700; margin-bottom: 0.6rem; color: var(--qr-text-secondary); text-transform: uppercase; }
.settings-row { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0; }
.settings-row + .settings-row { border-top: 1px solid var(--qr-border); }
.category-manage-item { display: flex; align-items: center; gap: 0.5rem; padding: 0.3rem 0; font-size: 0.9rem; }

/* Offcanvas / modal tweaks for theme */
.offcanvas, .modal-content { background: var(--qr-surface); color: var(--qr-text); }
.offcanvas-bottom { border-radius: 20px 20px 0 0; max-height: 92dvh; }
.add-action-sheet .offcanvas-body { padding-bottom: 2rem; }

.form-control, .form-select {
  background: var(--qr-surface-2);
  border: 1px solid var(--qr-border);
  color: var(--qr-text);
}
.form-control:focus, .form-select:focus {
  background: var(--qr-surface-2);
  color: var(--qr-text);
  border-color: var(--qr-primary);
  box-shadow: 0 0 0 3px rgba(var(--qr-primary-rgb), 0.2);
}

/* Evening review rows */
.review-item { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.6rem 0; border-bottom: 1px solid var(--qr-border); }
.review-item:last-child { border-bottom: none; }
.review-item-actions .btn { font-size: 0.75rem; }

/* ============ Desktop layout (≥992px) ============ */
@media (min-width: 992px) {
  .app-shell {
    padding-top: var(--qr-topbar-h);
    padding-bottom: 0;
    padding-left: 220px;
  }
  .app-nav {
    top: var(--qr-topbar-h);
    left: 0; right: auto; bottom: 0;
    width: 220px;
    height: auto;
    flex-direction: column;
    align-items: stretch;
    border-top: none;
    border-right: 1px solid var(--qr-border);
    padding: 1rem 0.5rem;
    gap: 0.25rem;
  }
  .nav-item {
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-radius: 10px;
    font-size: 0.92rem;
  }
  .nav-item { transition: background 0.12s ease, color 0.12s ease; }
  .nav-item:hover:not(.active) { background: var(--qr-surface-2); }
  .nav-item.active {
    background: linear-gradient(135deg, rgba(var(--qr-primary-rgb), 0.16), rgba(var(--qr-accent-rgb), 0.12));
    color: var(--qr-primary);
    font-weight: 600;
    box-shadow: inset 3px 0 0 0 var(--qr-primary);
  }
  .nav-item i { font-size: 1.1rem; }
  .nav-badge { position: static; margin-left: auto; }

  .app-main { padding: 1.25rem 2rem 3rem; max-width: 760px; }
  body { background: linear-gradient(180deg, rgba(var(--qr-primary-rgb), 0.05) 0%, transparent 320px), var(--qr-bg); }

  .quick-add-bar {
    position: sticky;
    top: 0;
    left: auto; right: auto; bottom: auto;
    border-radius: var(--qr-radius);
    border: 1px solid var(--qr-border);
    box-shadow: var(--qr-shadow);
    margin-bottom: 1.25rem;
  }
  .voice-indicator { padding-left: 0.5rem; }

  .fab { display: none; }

  .offcanvas-bottom.add-action-sheet,
  .offcanvas-bottom.reschedule-sheet {
    width: 460px;
    left: auto;
    right: 0;
    top: 0;
    bottom: 0;
    height: 100%;
    border-radius: 20px 0 0 20px;
  }
}