:root {
  color-scheme: dark;
  --bg: #0f1216;
  --panel: #171b21;
  --panel-alt: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --text: #e7ebf0;
  --text-dim: #aab2c0;
  --accent: #7fa8ff;
  --accent-dim: #34405c;
  --danger: #ff5c5c;
  --good: #3ecf8e;
  --radius: 16px;
}

* { box-sizing: border-box; }

/* Global safeguard: the `hidden` attribute must always win over any
   component's own `display` rule (e.g. .btn sets display:inline-flex,
   which would otherwise silently defeat [hidden] on buttons like the
   link-delete button or the day panel). */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  position: relative;
}

/* Form controls don't inherit the page font by default in any browser —
   without this they render in the OS's UI font instead, which is the most
   common cause of "inconsistent fonts" on a page like this. */
button, input, select, textarea {
  font-family: inherit;
}

/* Animated Grainient background (js/grainient.js). The gradient below is a
   static fallback shown until WebGL kicks in, or if it's unavailable. */
#grainient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, #000000 0%, #3d4249 55%, #94a3b8 100%);
}
#grainient-bg canvas { position: absolute; inset: 0; }

.app-shell {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}

.sidebar {
  position: relative;
  width: 220px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: rgba(15, 18, 22, 0.5);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-right: 1px solid var(--border);
  transition: width 0.18s ease;
}
.sidebar.collapsed { width: 72px; }

.sidebar-top { padding: 22px 18px 10px; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; white-space: nowrap; overflow: hidden; }
.sidebar.collapsed .sidebar-brand-text,
.sidebar.collapsed .nav-label { display: none; }

.sidebar-nav { display: flex; flex-direction: column; gap: 4px; padding: 10px 12px; flex: 1; overflow-y: auto; overflow-x: hidden; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  text-align: left;
  text-decoration: none;
  width: 100%;
  white-space: nowrap;
  box-sizing: border-box;
}
.nav-item:hover { background: var(--panel-alt); color: var(--text); }
.nav-item.active { background: var(--accent-dim); color: var(--text); }
.nav-item-danger:hover { background: rgba(255, 92, 92, 0.14); color: var(--danger); }
.nav-icon { width: 20px; height: 20px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: inherit; }
.nav-icon svg { width: 20px; height: 20px; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 10px 0; }

.sidebar-bottom { padding: 6px 12px 14px; }

/* A plain click toggle, not a resize handle — no drag/select affordance. */
.sidebar-resize-handle {
  position: absolute;
  top: 0;
  right: 0;
  width: 6px;
  height: 100%;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
}
.sidebar-resize-handle:hover,
.sidebar-resize-handle:active { background: var(--accent-dim); }

.main-col { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px 8px;
}

.topbar h1 { margin: 0; font-size: 28px; }
.clock { margin: 4px 0 0; color: var(--text-dim); font-size: 14px; }

.content { flex: 1; padding: 16px 32px 32px; }

.view { display: none; }
.view.active { display: block; }
#view-home.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: stretch;
}
#view-home.active > .panel { display: flex; flex-direction: column; }

@media (max-width: 800px) {
  #view-home.active { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .sidebar { position: fixed; z-index: 40; height: 100vh; }
}

.editable-name {
  cursor: pointer;
  border-bottom: 1px dashed transparent;
}
.editable-name:hover, .editable-name:focus {
  border-bottom-color: var(--text-dim);
  outline: none;
}
.name-edit-input {
  font: inherit;
  font-weight: inherit;
  background: var(--panel-alt);
  color: var(--text);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 0 6px;
  width: 10ch;
}

.panel-wide { grid-column: 1 / -1; }

/* Liquid glass cards. Base look is a frosted dark panel; js/glass-surface.js
   adds either the true SVG-filter distortion (Chromium) or a plain blur
   fallback (Safari/Firefox / no support) on top of this. */
.panel {
  position: relative;
  background: rgba(20, 24, 30, 0.42);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.panel.glass-surface-svg {
  background: rgba(20, 24, 30, var(--glass-frost, 0.32));
  backdrop-filter: var(--glass-filter-url) blur(4px) saturate(var(--glass-saturation, 1.5));
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
}
.panel.glass-surface-fallback {
  background: rgba(20, 24, 30, 0.5);
  backdrop-filter: blur(20px) saturate(1.6) brightness(1.05);
  -webkit-backdrop-filter: blur(20px) saturate(1.6) brightness(1.05);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.panel-header h2 { margin: 0; font-size: 16px; letter-spacing: .02em; color: var(--text); }
.panel-header h3 { margin: 0; font-size: 14px; color: var(--text); }

:root { --control-height: 38px; }

.btn {
  height: var(--control-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #0f1216;
  border: none;
  border-radius: 8px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
}
.btn:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--panel-alt); color: var(--text); font-weight: 400; }
.btn-danger { background: var(--danger); color: white; }

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  width: 28px;
  height: 28px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0;
}
.btn-icon:hover { background: var(--accent-dim); }

.inline-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.inline-form input[type="text"],
.inline-form input[type="url"],
.inline-form input[type="date"],
.inline-form input[type="time"] {
  height: var(--control-height);
  flex: 1;
  min-width: 110px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0 10px;
  font-size: 14px;
}
.mini-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--text-dim);
}
.mini-label input { margin-top: 0; }

/* Hide the native calendar-picker icon on date/time fields for a cleaner,
   custom look — clicking anywhere in the field still opens the picker. */
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  display: none;
}
input[type="date"],
input[type="time"],
input[type="datetime-local"] {
  color-scheme: dark;
  text-transform: uppercase;
  text-align: center;
}

/* Links */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 12px;
}
.link-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 6px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  text-decoration: none;
  color: var(--text);
}
.link-tile:hover { border-color: var(--accent); }
.link-tile img { width: 28px; height: 28px; border-radius: 6px; }
.link-tile span {
  font-size: 12px;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
.link-tile .edit-btn {
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 11px;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
}
.link-tile.draggable { opacity: 1; }
.link-tile.dragging { opacity: 0.4; }

/* Reminders */
.reminder-list { display: flex; flex-direction: column; gap: 6px; max-height: 320px; overflow-y: auto; }
.reminder-sublist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.reminder-divider { height: 1px; background: var(--border); margin: 4px 2px; flex-shrink: 0; }
.reminder-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
}
.reminder-item.done .reminder-text { text-decoration: line-through; color: var(--text-dim); }
.reminder-item.overdue { border-color: var(--danger); }
.reminder-text { flex: 1; font-size: 14px; }
.reminder-due { font-size: 11px; color: var(--text-dim); white-space: nowrap; text-align: center; }
.reminder-item button {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
}
.reminder-item button:hover { color: var(--danger); }

/* Calendar */
.calendar-nav { display: flex; align-items: center; gap: 8px; font-size: 13px; text-align: center; }

.calendar-grid { display: flex; flex-direction: column; gap: 2px; }

.cal-dow-row, .cal-week-daynums {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.cal-dow { text-align: center; font-size: 11px; color: var(--text-dim); padding-bottom: 6px; }

.cal-week {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 4px;
  margin-top: 2px;
}
.cal-week:first-of-type { border-top: none; margin-top: 0; }

.cal-daynum {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  background: var(--panel-alt);
  border: 1px solid transparent;
}
.cal-daynum:hover { border-color: var(--accent); }
.cal-daynum.out-of-month { color: var(--text-dim); opacity: 0.4; }
.cal-daynum.today { border-color: var(--accent); font-weight: 700; color: var(--accent); }

.cal-week-bars {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px 4px;
  margin-top: 3px;
}
.cal-bar {
  grid-row: 1;
  background: var(--accent);
  color: #0f1216;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}
.cal-bar.cont-left { border-top-left-radius: 0; border-bottom-left-radius: 0; margin-left: -4px; padding-left: 10px; }
.cal-bar.cont-right { border-top-right-radius: 0; border-bottom-right-radius: 0; margin-right: -4px; }
.cal-bar.cal-bar-reminder { background: var(--good); }
.cal-bar.cal-bar-done { opacity: 0.5; text-decoration: line-through; }

.calendar-day-panel {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.event-list { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.event-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 13px;
}
.event-list li button { background: none; border: none; color: var(--text-dim); cursor: pointer; }
.event-list li button:hover { color: var(--danger); }

/* Roblox */
.roblox-status { font-size: 13px; color: var(--text-dim); margin-bottom: 10px; min-height: 18px; }
.roblox-result { display: none; }
.roblox-result.visible { display: block; }
.rbx-header { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.rbx-header img { width: 90px; height: 90px; border-radius: 12px; background: var(--panel-alt); }
.rbx-header .rbx-name { font-size: 18px; font-weight: 600; }
.rbx-header .rbx-username { color: var(--text-dim); font-size: 13px; }
.rbx-header a { color: var(--accent); font-size: 13px; }
.rbx-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; margin-bottom: 16px; }
.rbx-stat { background: var(--panel-alt); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; text-align: center; }
.rbx-stat .val { font-size: 18px; font-weight: 700; }
.rbx-stat .label { font-size: 11px; color: var(--text-dim); }
.rbx-section { margin-bottom: 16px; }
.rbx-section h4 { margin: 0 0 8px; font-size: 13px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .04em; }
.rbx-desc { white-space: pre-wrap; font-size: 13px; background: var(--panel-alt); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.rbx-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.rbx-tag { background: var(--panel-alt); border: 1px solid var(--border); border-radius: 20px; padding: 4px 10px; font-size: 12px; }
.rbx-error { color: var(--danger); font-size: 14px; }

/* Groups: name on the left, role on the right of each row */
.rbx-group-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 10px;
}
@media (max-width: 700px) {
  .rbx-group-list { grid-template-columns: 1fr; }
}
.rbx-group-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
}
.rbx-group-name { font-weight: 600; }
.rbx-group-role { color: var(--text-dim); text-align: right; white-space: nowrap; }

/* Modal */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal[hidden] { display: none; }
.modal-content {
  background: rgba(20, 24, 30, 0.75);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 20px;
  width: 320px;
}
.modal-content h3 { margin-top: 0; }
.modal-content label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 10px; }
.modal-content input {
  display: block;
  width: 100%;
  margin-top: 4px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }

/* Confetti burst — fired from js/reminders.js when a reminder is completed */
.confetti-piece {
  position: fixed;
  width: 7px;
  height: 10px;
  border-radius: 2px;
  pointer-events: none;
  z-index: 999;
  animation: confetti-burst 900ms ease-out forwards;
}
@keyframes confetti-burst {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate(var(--dx), calc(var(--dy) + 160px)) rotate(var(--rot)); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .confetti-piece { display: none; }
}

/* ---------- Notes ---------- */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.note-card {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 120px;
  cursor: pointer;
}
.note-card:hover { border-color: var(--accent); }
.note-card.locked { cursor: default; }
.note-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.note-card-title { font-weight: 600; font-size: 14px; word-break: break-word; }
.note-card-actions { display: flex; gap: 4px; flex-shrink: 0; }
.note-card-actions button {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  padding: 2px;
  line-height: 1;
}
.note-card-actions button:hover { color: var(--text); }
.note-card-actions .note-delete-btn:hover { color: var(--danger); }

/* Generic small icon button — used by Notes and Study action rows. */
.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 2px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:hover { color: var(--text); }
.icon-btn svg { width: 16px; height: 16px; display: block; }
.note-card-body {
  font-size: 13px;
  color: var(--text-dim);
  white-space: pre-wrap;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
  flex: 1;
}
.note-card.locked .note-card-body {
  color: var(--text-dim);
  font-style: italic;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
}
.note-locked-icon svg { width: 22px; height: 22px; opacity: 0.7; }
.note-card-meta { font-size: 11px; color: var(--text-dim); opacity: 0.7; text-align: center; }

/* ---------- Modal extras ---------- */
.modal-content textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
  resize: vertical;
}
.modal-content select {
  display: block;
  width: 100%;
  margin-top: 4px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}
.modal-row { display: flex; gap: 10px; }
.modal-row label { flex: 1; }
.modal-note { font-size: 13px; color: var(--text-dim); margin-top: -4px; }
.modal-error { font-size: 12px; color: var(--danger); margin: -4px 0 4px; }

/* ---------- Study ---------- */
.study-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: start;
}
@media (max-width: 800px) {
  .study-board { grid-template-columns: 1fr; }
}
.study-col-title {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .04em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.study-col-count {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1px 8px;
  font-size: 11px;
}
.study-col-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 60px;
  padding: 4px;
  border-radius: 10px;
}
.study-col-list.drag-over { background: var(--panel-alt); outline: 1px dashed var(--accent); }
.study-card {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: grab;
}
.study-card.dragging { opacity: 0.4; }
.study-card:hover { border-color: var(--accent); }
.study-card-title { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.study-card-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.study-badge {
  font-size: 11px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px 8px;
  text-align: center;
}
.study-card.status-complete .study-card-title { text-decoration: line-through; color: var(--text-dim); }

/* Study events on the Calendar get their own bar color */
.cal-bar.cal-bar-study { background: #c792ea; }

/* ---------- Chat ---------- */
.chat-status {
  font-size: 13px;
  color: var(--text-dim);
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 10px;
}
.chat-status.error { color: var(--danger); border-color: var(--danger); }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 2px 12px;
}
.chat-msg {
  max-width: 78%;
  padding: 10px 13px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-msg.user {
  align-self: flex-end;
  background: var(--accent);
  color: #0f1216;
  border-bottom-right-radius: 3px;
}
.chat-msg.assistant {
  align-self: flex-start;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-bottom-left-radius: 3px;
}
.chat-msg.pending { color: var(--text-dim); font-style: italic; }
.chat-form { display: flex; align-items: flex-end; gap: 8px; }
.chat-form textarea {
  flex: 1;
  resize: none;
  max-height: 140px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
}
.chat-form .btn { flex-shrink: 0; }

/* ---------- Settings ---------- */
.settings-color-row { display: flex; gap: 16px; margin: 4px 0 4px; }
.settings-color-row label {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
}
.settings-color-row input[type="color"] {
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: none;
  cursor: pointer;
}
.settings-color-row input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.settings-color-row input[type="color"]::-webkit-color-swatch { border: none; border-radius: 7px; }

/* ---------- Floating chat (available on every page) ---------- */
.chat-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent);
  color: #0f1216;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  z-index: 60;
}
.chat-fab:hover { filter: brightness(1.1); }
.chat-fab svg { width: 24px; height: 24px; }

.chat-panel {
  position: fixed;
  right: 20px;
  bottom: 84px;
  width: 360px;
  max-width: calc(100vw - 40px);
  height: 480px;
  max-height: calc(100vh - 120px);
  background: rgba(20, 24, 30, 0.85);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  z-index: 59;
}
.chat-panel-actions { display: flex; gap: 6px; }

/* ---------- Confetti rain (Study items marked Complete) ---------- */
.confetti-rain-piece {
  position: fixed;
  top: -20px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  pointer-events: none;
  z-index: 999;
  animation: confetti-rain-fall linear forwards;
}
@keyframes confetti-rain-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(var(--fall-distance)) rotate(var(--rot)); opacity: 0.9; }
}
@media (prefers-reduced-motion: reduce) {
  .confetti-rain-piece { display: none; }
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .topbar { padding: 18px 16px 8px; }
  .content { padding: 12px 16px 24px; }
  .modal-content { width: 320px; max-width: calc(100vw - 32px); }
  .sidebar-resize-handle { width: 14px; }
  .chat-fab { right: 14px; bottom: 14px; }
  .chat-panel {
    left: 14px;
    right: 14px;
    bottom: 78px;
    width: auto;
    max-width: none;
    height: min(70vh, 480px);
  }
}

/* ---------- Deleted sections (Notes + Study) ---------- */
.deleted-section { margin-top: 18px; }
.deleted-section summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 6px 2px;
  list-style: none;
}
.deleted-section summary::-webkit-details-marker { display: none; }
.deleted-section summary::before {
  content: '▸';
  display: inline-block;
  margin-right: 6px;
  transition: transform 0.15s ease;
}
.deleted-section[open] summary::before { transform: rotate(90deg); }
.deleted-section .notes-grid,
.deleted-section .study-board { margin-top: 10px; }

.note-card-deleted { opacity: 0.75; border-style: dashed; cursor: default; }
.note-card-actions-row { justify-content: space-between; align-items: center; margin-top: 4px; }

.btn-small { height: 28px; padding: 0 10px; font-size: 12px; }

.study-card-deleted { opacity: 0.75; border-style: dashed; cursor: default; }
.study-card-deleted .study-card-actions { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 8px; }

/* ---------- Chat context (Q&A) ---------- */
.context-list { display: flex; flex-direction: column; gap: 8px; max-height: 220px; overflow-y: auto; margin: 10px 0; }
.context-item {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
}
.context-item-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.context-item-q { font-weight: 600; margin-bottom: 2px; }
.context-item-a { color: var(--text-dim); white-space: pre-wrap; }

/* ---------- Chat daily usage bar ---------- */
.chat-usage { margin-top: 10px; display: flex; flex-direction: column; gap: 4px; }
.chat-usage-bar {
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}
.chat-usage-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease, background 0.3s ease;
}
.chat-usage-fill.warn { background: #ffd166; }
.chat-usage-fill.danger { background: var(--danger); }
.chat-usage-label { font-size: 10.5px; color: var(--text-dim); opacity: 0.75; text-align: right; }

/* ---------- Password gate (client-side, see js/gate.js + api/auth.js) ---------- */
html.gate-locked .app-shell,
html.gate-locked .chat-fab,
html.gate-locked .chat-panel { display: none !important; }
html:not(.gate-locked) #gate-overlay { display: none; }

#gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}
.gate-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: 100%;
  max-width: 320px;
  padding: 0 20px;
}
.gate-form input[type="password"] {
  width: 100%;
  height: 46px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--text);
  border-radius: 10px;
  padding: 0 14px;
  font-size: 16px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.gate-form input[type="password"]:focus { outline: none; border-color: var(--accent); }
.gate-error { color: var(--danger); font-size: 13px; margin: 0; min-height: 16px; }

/* ---- Timetable ---- */
.timetable-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timetable-group-header {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-dim, rgba(255, 255, 255, 0.55));
  padding: 18px 6px 6px;
}

.timetable-group-header:first-child {
  padding-top: 4px;
}

.timetable-group-header.is-today {
  color: var(--accent);
}

.timetable-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.timetable-row:hover {
  background: rgba(255, 255, 255, 0.06);
}

.timetable-row.done {
  opacity: 0.55;
}

.timetable-row.done .timetable-title {
  text-decoration: line-through;
}

.timetable-icon {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.timetable-icon svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.timetable-icon-reminder svg { color: var(--accent); }
.timetable-icon-event svg { color: #7dd3fc; }
.timetable-icon-study svg { color: #c4b5fd; }

.timetable-main {
  flex: 1 1 auto;
  min-width: 0;
}

.timetable-title {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timetable-meta {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 2px;
}

.timetable-time {
  flex: 0 0 auto;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  min-width: 64px;
}

@media (max-width: 640px) {
  .timetable-row { flex-wrap: wrap; }
  .timetable-time { min-width: auto; margin-left: 42px; }
}

/* ---- Weather ---- */
.weather-status {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 14px;
  text-align: center;
}

.weather-search-results {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.weather-search-result {
  text-align: left;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.weather-search-result:hover {
  background: rgba(255, 255, 255, 0.1);
}

.weather-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.weather-day-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 8px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: inherit;
  cursor: pointer;
  font: inherit;
  text-align: center;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.weather-day-card:hover {
  background: rgba(255, 255, 255, 0.09);
}

.weather-day-card.active {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.1);
}

.weather-day-label {
  font-weight: 700;
  font-size: 0.85rem;
}

.weather-day-date {
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.5);
}

.weather-icon {
  color: var(--accent);
  display: inline-flex;
}

.weather-icon svg {
  width: 100%;
  height: 100%;
}

.weather-day-cond {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.65);
  min-height: 1.6em;
}

.weather-day-temps {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
}

.weather-day-max { font-weight: 700; }
.weather-day-min { color: rgba(255, 255, 255, 0.5); }

.weather-detail {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  padding: 18px;
}

.weather-detail-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.weather-detail-title {
  font-weight: 700;
}

.weather-detail-sub {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}

.weather-detail-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.weather-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  text-align: center;
}

.weather-stat-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.5);
}

.weather-stat-value {
  font-weight: 700;
}

.weather-hourly {
  display: flex;
  gap: 6px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 4px;
}

.weather-hour {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.75);
  min-width: 0;
}

.weather-hour-precip {
  color: #7dd3fc;
}

@media (max-width: 900px) {
  .weather-days { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .weather-days { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .weather-detail-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.settings-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: 16px 0 12px;
}

.settings-image-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.settings-image-preview {
  margin-top: 12px;
  height: 90px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background-size: cover;
  background-position: center;
}