:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #1c2128;
  --text-muted: #6b7280;
  --accent: #4f5fe0;
  --accent-soft: #eef0fd;
  --completed: #1a9c6d;
  --completed-soft: #e7f7f0;
  --planned: #c8790d;
  --planned-soft: #fdf1e3;
  --locked: #e0475a;
  --locked-soft: #fdeef0;
  --notoffered: #9aa1ac;
  --notoffered-soft: #f1f2f4;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar h1 { font-size: 18px; margin: 0; white-space: nowrap; }

.tabs { display: flex; gap: 4px; }
.tab-btn {
  border: none;
  background: transparent;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
}
.tab-btn.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.tab-btn:disabled { opacity: .35; cursor: default; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px; }

.study-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-muted);
}
.study-chip.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.study-chip input { cursor: pointer; }

.hidden { display: none; }

.tag-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.tag-chip {
  border: 1px solid var(--border); background: var(--surface); border-radius: 999px;
  padding: 5px 12px; font-size: 12px; cursor: pointer; color: var(--text-muted);
}
.tag-chip.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.selected-summary { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.selected-summary .study-chip { cursor: default; }
.selected-summary-empty { font-size: 13px; color: var(--text-muted); font-style: italic; }

.study-selector-controls { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }

.study-list {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  max-height: 420px; overflow-y: auto; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px; background: var(--surface);
}

.fetch-progress-track { width: 100%; max-width: 400px; height: 8px; border-radius: 4px; background: var(--border); overflow: hidden; margin-top: 8px; }
.fetch-progress-fill { height: 100%; width: 0; min-width: 3%; background: var(--accent); transition: width .3s ease; }
.fetch-progress-fill.active {
  background-image: linear-gradient(90deg, var(--accent) 0%, var(--accent-soft) 50%, var(--accent) 100%);
  background-size: 200% 100%;
  animation: fetch-progress-pulse 1.4s linear infinite;
}
@keyframes fetch-progress-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: 0 0; }
}

.fetch-banner { display: flex; align-items: center; gap: 10px; background: var(--planned-soft); color: var(--planned); border-radius: var(--radius); padding: 10px 14px; font-size: 13px; margin-bottom: 16px; }
.fetch-banner a { color: var(--planned); font-weight: 600; }

.meta { margin-left: auto; font-size: 13px; color: var(--text-muted); }
.meta strong { color: var(--accent); }

/* ---- Profile menu (top-right icon + dropdown) ---- */
.profile-menu-wrap { position: relative; display: inline-block; vertical-align: middle; }
.profile-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 6px;
  z-index: 30;
}
.profile-menu.open { display: block; }
.profile-menu-email {
  padding: 8px 10px 6px;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
  overflow-wrap: break-word;
}
.profile-menu-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
}
.profile-menu-item:hover { background: var(--accent-soft); color: var(--accent); }
.profile-menu form { margin: 0; }

main { padding: 20px 24px 60px; max-width: 1100px; margin: 0 auto; }
/* Weekly Schedule has a lot more to lay out side-by-side (course lists +
   a full week grid) than the other views, so let it use a wider column
   on desktop instead of being capped at the same width as Study Plan. */
main:has(#weeklyView.active) { max-width: 1600px; }

.view { display: none; }
.view.active { display: block; }

.legend { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--text-muted); margin-bottom: 16px; }
.legend-item { display: flex; align-items: center; gap: 5px; }
.swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.deselect-all-btn { margin-left: auto; }
.deselect-all-btn:disabled { opacity: .5; cursor: default; }
.swatch-completed { background: var(--completed); }
.swatch-planned { background: var(--planned); }
.swatch-locked { background: var(--locked); }
.swatch-notoffered { background: var(--notoffered); }

/* ---- Study sections (plan view, one per checked study filter) ---- */
.study-section { margin-bottom: 36px; }
.study-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}
.study-section-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.study-section-title { font-size: 16px; font-weight: 700; }
.study-section-progress { margin-left: auto; font-size: 13px; color: var(--text-muted); }

.section-heading {
  font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--text-muted); margin: 0 0 12px;
}
.steop-group { margin-bottom: 12px; padding-bottom: 20px; border-bottom: 2px solid var(--border); }
.steop-group .study-section:last-child { margin-bottom: 0; }

/* ---- Tree ---- */
.node { margin-bottom: 6px; }
.node-children { margin-left: 18px; padding-left: 12px; border-left: 1px dashed var(--border); }

.cat-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 12px;
  cursor: pointer;
  user-select: none;
}
.cat-row:hover { border-color: var(--accent); }
.cat-row .chevron { width: 14px; text-align: center; color: var(--text-muted); transition: transform .15s; font-size: 11px; }
.node.collapsed > .cat-row .chevron { transform: rotate(-90deg); }
.cat-row .title { font-weight: 600; font-size: 14px; flex: 1; }
.cat-row .progress-wrap { display: flex; align-items: center; gap: 8px; }
.cat-row .progress-bar { width: 80px; height: 6px; border-radius: 4px; background: var(--border); overflow: hidden; }
.cat-row .progress-bar > div { height: 100%; background: var(--accent); }
.cat-row.done .progress-bar > div { background: var(--completed); }
.cat-row .progress-label { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

.node.collapsed > .node-children { display: none; }

/* StEOP gate between the mandatory StEOP section and the rest of the tree */
.steop-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--locked);
  background: var(--locked-soft);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin: 8px 0 20px;
}
.steop-banner.done { color: var(--completed); background: var(--completed-soft); }
.steop-banner label { display: flex; align-items: center; gap: 6px; cursor: pointer; margin-left: auto; white-space: nowrap; }

.locked-section { opacity: .6; }

/* Choice groups (Wahlfach / Vertiefungsfeld style either-or) */
.choice-banner {
  font-size: 12px;
  color: var(--planned);
  background: var(--planned-soft);
  border-radius: 6px;
  padding: 4px 8px;
  margin: 4px 0 8px;
  display: inline-block;
}
.choice-option { position: relative; }
.choice-option > .cat-row { border-color: var(--accent); }
.choice-option.chosen > .cat-row { border-color: var(--completed); background: var(--completed-soft); }
.choice-option.not-chosen > .cat-row { opacity: .55; }
.choice-option.not-chosen > .node-children { display: none; }
.choose-btn {
  border: 1px solid var(--accent);
  background: var(--surface);
  color: var(--accent);
  border-radius: 999px;
  font-size: 11px;
  padding: 3px 10px;
  cursor: pointer;
  white-space: nowrap;
}
.choice-option.chosen .choose-btn { border-color: var(--completed); color: var(--completed); }

/* Course rows */
.course-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 13px;
}
.course-row .lva-type {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 5px;
  padding: 2px 6px;
  min-width: 24px;
  text-align: center;
}
.course-row .title { flex: 1; }
.course-row .ects { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.course-row .semester-badge { font-size: 11px; color: var(--notoffered); white-space: nowrap; }

.companion-note {
  font-size: 11px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
  cursor: help;
}
.companion-note.companion-missing { color: var(--locked); background: var(--locked-soft); font-weight: 600; }
.sidebar-course-info .companion-note { align-self: flex-start; }
.course-row.completed { background: var(--completed-soft); border-color: var(--completed); }
.course-row.planned:not(.completed) { background: var(--planned-soft); border-color: var(--planned); }
.course-row.locked { background: var(--locked-soft); border-color: var(--locked); }
.course-row.not-offered .title { color: var(--text-muted); }

.checkbox-group { display: flex; align-items: center; gap: 4px; }
.checkbox-group label { font-size: 10px; color: var(--text-muted); display: flex; flex-direction: column; align-items: center; gap: 2px; }

.lock-icon { cursor: help; color: var(--locked); font-size: 13px; }

.milestone-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* ---- View tabs / topbar extras ---- */
.view-tabs { margin-left: 8px; }
.planned-count { color: var(--planned); font-weight: 600; margin-left: 12px; }

/* ---- Mobile bottom nav ---- */
/* Hidden on desktop - the top tabs handle navigation there. Shown (and the
   equivalent top nav hidden) below 768px, see the mobile media query. */
.bottom-nav { display: none; }
.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  font-size: 11px;
  color: var(--text-muted);
  text-decoration: none;
}
.bottom-nav-item.active { color: var(--accent); font-weight: 600; }

.btn-secondary {
  border: 1px solid var(--border); background: var(--surface);
  border-radius: 8px; padding: 6px 12px; font-size: 13px; cursor: pointer;
}

/* ---- Course row detail (lecturer chip, group select, session badge) ---- */
.course-detail { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.group-select {
  font-size: 12px;
  padding: 3px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  max-width: 220px;
}
.lecturer-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px 2px 2px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--notoffered-soft);
  color: var(--text-muted);
  font-size: 11px;
}
.lecturer-chip.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}
.lecturer-chip .lecturer-name { white-space: nowrap; }

.lecturer-tooltip {
  position: fixed;
  z-index: 100;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: none;
  font-size: 13px;
}
.lecturer-tooltip.hidden { display: none; }
.lecturer-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; overflow: hidden; flex-shrink: 0;
}
.lecturer-avatar img { width: 100%; height: 100%; object-fit: cover; }
.lecturer-avatar.small { width: 18px; height: 18px; font-size: 8px; }

.badge.session-count { background: var(--notoffered-soft); color: var(--text-muted); cursor: pointer; font-size: 11px; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.badge.session-count:hover { background: var(--accent-soft); color: var(--accent); }

.kusss-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 2px 4px;
}
.kusss-link:hover { color: var(--accent); }
.group-picker-header .kusss-link { font-size: 12px; margin-left: 4px; }

/* ---- Weekly view ---- */
.weekly-toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
#selectedCount { font-size: 13px; color: var(--text-muted); }

.weekly-layout { display: flex; gap: 16px; align-items: flex-start; }
.calendar-scroll { flex: 1; min-width: 0; overflow-x: auto; }

.course-sidebar { width: 380px; flex-shrink: 0; display: flex; flex-direction: column; gap: 10px; }
.sidebar-section { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.sidebar-section-header {
  width: 100%; display: flex; align-items: center; gap: 8px;
  border: none; background: transparent; padding: 10px 12px;
  font-size: 13px; font-weight: 600; cursor: pointer; color: var(--text); text-align: left;
}
.sidebar-section-header:hover { background: var(--bg); }
.sidebar-chevron { display: inline-block; transition: transform 0.15s ease; color: var(--text-muted); font-size: 11px; }
.sidebar-section.collapsed .sidebar-chevron { transform: rotate(-90deg); }
.sidebar-section.collapsed .sidebar-section-body { display: none; }
.sidebar-section-body { max-height: 460px; overflow-y: auto; border-top: 1px solid var(--border); }

.sidebar-course-row { display: flex; align-items: flex-start; gap: 8px; padding: 8px 12px; border-top: 1px solid var(--border); font-size: 12px; }
.sidebar-course-row:first-child { border-top: none; }
.sidebar-course-row input[type="checkbox"] { width: 14px; height: 14px; margin-top: 2px; cursor: pointer; flex-shrink: 0; }
.sidebar-course-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.sidebar-course-title-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.sidebar-course-title { font-weight: 600; }
.sidebar-course-schedule { color: var(--text-muted); font-size: 11px; }
.sidebar-course-conflict { color: var(--locked); font-size: 11px; }
.sidebar-empty { padding: 10px 12px; color: var(--text-muted); font-size: 12px; font-style: italic; }

.calendar {
  display: grid;
  grid-template-columns: 56px repeat(5, 1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.cal-corner { border-bottom: 1px solid var(--border); }
.cal-day-header {
  padding: 8px; text-align: center; font-size: 13px; font-weight: 600;
  border-bottom: 1px solid var(--border); border-left: 1px solid var(--border);
}
.cal-time-col { border-right: 1px solid var(--border); position: relative; }
.cal-time-label { font-size: 10px; color: var(--text-muted); position: absolute; right: 4px; transform: translateY(-50%); }
.cal-day-col {
  position: relative;
  border-left: 1px solid var(--border);
  background-image: repeating-linear-gradient(to bottom, transparent, transparent 39px, var(--bg) 40px);
}

.cal-event {
  position: absolute;
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 11px;
  line-height: 1.3;
  overflow: hidden;
  background: var(--planned-soft);
  border: 1px solid var(--planned);
  color: var(--planned);
  cursor: pointer;
}
.cal-event:hover { filter: brightness(0.97); }
.cal-event.has-options { border-style: dashed; }
.cal-event.biweekly {
  background-image: repeating-linear-gradient(135deg, currentColor 0 2px, transparent 2px 8px);
  background-blend-mode: overlay;
  opacity: 0.92;
}
.cal-event .ev-title { font-weight: 600; display: block; }
.cal-event .ev-time { opacity: 0.8; }

.ev-tags { display: flex; gap: 3px; margin-bottom: 2px; }
.ev-study-tag, .sidebar-course-tag { display: inline-block; font-size: 8px; font-weight: 700; color: #fff; padding: 1px 4px; border-radius: 999px; letter-spacing: 0.02em; flex-shrink: 0; }

.ev-options-marker {
  position: absolute; bottom: 3px; right: 3px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--planned); color: #fff;
  font-size: 9px; line-height: 14px; text-align: center;
}
.ev-count-badge {
  position: absolute; top: 3px; right: 3px; min-width: 14px; height: 14px;
  padding: 0 3px; border-radius: 7px; background: var(--surface);
  border: 1px solid currentColor; color: inherit; font-size: 9px; font-weight: 700;
  line-height: 12px; text-align: center;
}

.cal-event.conflict { background: var(--locked-soft); border-color: var(--locked); color: var(--locked); }
.cal-event.conflict .ev-count-badge { border-color: var(--locked); }

/* ---- Calendar view ---- */
.calendar-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.cal-nav { display: flex; align-items: center; gap: 10px; }
.cal-range-label { font-size: 14px; font-weight: 600; min-width: 160px; }
.calendar-body { overflow-x: auto; }

.cal-day-header.today { color: var(--accent); }
.cal-day-col.today { background-color: var(--accent-soft); }

.cal-month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.cal-month-weekday {
  padding: 8px; text-align: center; font-size: 12px; font-weight: 600;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.cal-month-cell {
  min-height: 96px; padding: 6px; border-top: 1px solid var(--border);
  border-left: 1px solid var(--border); cursor: pointer; display: flex;
  flex-direction: column; gap: 2px;
}
.cal-month-cell:nth-child(7n+1) { border-left: none; }
.cal-month-cell.outside-month { background: var(--bg); color: var(--text-muted); }
.cal-month-cell.today .cal-month-date {
  background: var(--accent); color: #fff; border-radius: 50%;
  width: 20px; height: 20px; display: flex; align-items: center; justify-content: center;
}
.cal-month-date { font-size: 12px; font-weight: 600; }
.cal-month-chip {
  font-size: 10px; line-height: 1.3; padding: 1px 4px; border-radius: 3px;
  background: var(--bg); border-left: 3px solid var(--accent); overflow: hidden;
  white-space: nowrap; text-overflow: ellipsis; cursor: pointer;
}
.cal-month-chip:hover { filter: brightness(0.96); }
.cal-month-more { font-size: 10px; color: var(--text-muted); cursor: pointer; }

/* ---- Workload view ---- */
.workload-toolbar { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.workload-nav { display: flex; align-items: center; gap: 10px; }
.workload-range-label { font-size: 13px; font-weight: 600; min-width: 160px; text-align: center; }
.workload-subtitle { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }

.workload-chart { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 16px 12px; }
.workload-empty { color: var(--text-muted); font-size: 13px; margin: 0; }

.workload-plot { display: flex; align-items: flex-end; gap: 2px; height: 180px; border-bottom: 1px solid var(--border); }
.workload-col {
  flex: 1 1 0; min-width: 0; height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end; cursor: default; border-radius: 4px;
}
.workload-col:hover, .workload-col:focus-visible { background: var(--bg); outline: none; }
.workload-value { font-size: 10px; font-weight: 600; color: var(--text-muted); margin-bottom: 3px; }
.workload-bar { width: 100%; max-width: 24px; min-height: 2px; background: var(--planned); border-radius: 4px 4px 0 0; }
.workload-col.empty .workload-bar { background: var(--notoffered-soft); }
.workload-col:hover .workload-bar, .workload-col:focus-visible .workload-bar { filter: brightness(0.9); }

.workload-axis { display: flex; gap: 2px; margin-top: 6px; }
.workload-axis-label { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; align-items: center; text-align: center; }
.workload-axis-kw { font-size: 10px; font-weight: 600; color: var(--text-muted); white-space: nowrap; }
.workload-axis-month { font-size: 9px; color: var(--text-muted); opacity: 0.75; white-space: nowrap; }

.workload-tooltip {
  position: fixed; z-index: 100; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.12); padding: 8px 10px;
  font-size: 12px; max-width: 260px; pointer-events: none;
}
.workload-tooltip.hidden { display: none; }
.workload-tooltip-range { color: var(--text-muted); margin-bottom: 2px; }
.workload-tooltip-value { font-weight: 700; margin-bottom: 4px; }
.workload-tooltip-course { color: var(--text-muted); font-size: 11px; }

/* ---- Group / Termine picker popup ---- */
.group-picker {
  position: fixed; z-index: 200; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.15); padding: 8px;
  display: flex; flex-direction: column; min-width: 260px; max-width: 340px;
}
.group-picker-header { font-size: 13px; font-weight: 600; padding: 4px 6px 8px; border-bottom: 1px solid var(--border); margin-bottom: 4px; }
.group-picker-divider {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-muted);
  padding: 8px 6px 4px; border-top: 1px solid var(--border); margin-top: 4px;
}
.group-picker-option { text-align: left; border: none; background: transparent; padding: 8px 10px; font-size: 13px; border-radius: 6px; cursor: pointer; color: var(--text); }
.group-picker-option:hover { background: var(--bg); }
.group-picker-option.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.group-picker-option.conflict { color: var(--locked); }
.group-picker-option.conflict:hover { background: var(--locked-soft); }
.group-picker-option.conflict.active { background: var(--locked-soft); color: var(--locked); }
.group-picker-option.remove-option { color: var(--locked); font-weight: 600; }
.group-picker-option.remove-option:hover { background: var(--locked-soft); }

.session-list { max-height: 260px; overflow-y: auto; }
.session-row { display: flex; align-items: baseline; gap: 8px; padding: 5px 6px; font-size: 12px; border-radius: 6px; }
.session-row:nth-child(odd) { background: var(--bg); }
.session-row-empty { color: var(--text-muted); font-style: italic; }
.session-when { flex: 1; white-space: nowrap; }
.session-room { color: var(--text-muted); white-space: nowrap; }
.session-note { color: var(--accent); font-size: 11px; white-space: nowrap; }
.session-row.conflict { background: var(--locked-soft); color: var(--locked); }
.session-row.conflict .session-room { color: var(--locked); }

.conflict-warning { background: var(--locked-soft); color: var(--locked); font-size: 12px; padding: 6px 8px; border-radius: 6px; margin-bottom: 6px; line-height: 1.5; }

/* ---- Auth / plain forms (signup, login, settings) ---- */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 16px; }
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 360px;
  max-width: 100%;
}
.auth-card h1 { font-size: 18px; margin: 0 0 20px; }
.form-field { margin-bottom: 14px; }
.form-field label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.form-field input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
.form-errors { color: var(--locked); font-size: 13px; margin-bottom: 12px; }
.btn-primary {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-size: 14px;
  cursor: pointer;
}
.auth-switch { margin-top: 16px; font-size: 13px; color: var(--text-muted); text-align: center; }
.auth-switch a { color: var(--accent); }

.container { padding: 20px 24px 60px; max-width: 1100px; margin: 0 auto; }

/* ---- Notification settings ---- */
.notif-settings {
  display: flex; flex-direction: column; gap: 12px;
  padding: 16px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); max-width: 480px; margin-bottom: 8px;
}
.notif-row { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.notif-row select {
  padding: 4px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px;
}
.notif-status { font-size: 13px; color: var(--text-muted); }

/* ---- Mobile ---- */
@media (max-width: 768px) {
  .topbar {
    flex-wrap: wrap;
    gap: 8px 12px;
    padding: 10px 12px;
  }
  .topbar h1 { font-size: 15px; }
  .tabs, .view-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .tab-btn { white-space: nowrap; padding: 8px 12px; }
  .meta {
    margin-left: 0;
    width: 100%;
    justify-content: flex-end;
    flex-wrap: wrap;
    row-gap: 6px;
  }

  /* The 4 view tabs move to the bottom nav bar on mobile - hide the
     desktop equivalents (top-level Settings/Study Helper tabs and the
     in-app view tabs) so each destination only appears once. The profile
     menu (Settings/Log out) stays visible at every width instead of
     folding into either of these. */
  .page-nav, .topbar .view-tabs { display: none; }
  .bottom-nav {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    background: var(--surface);
    border-top: 1px solid var(--border);
  }

  main, .container {
    padding: 14px 12px calc(56px + 12px + env(safe-area-inset-bottom));
  }

  .weekly-layout { flex-direction: column; align-items: stretch; }
  .course-sidebar { width: 100%; }
  .calendar-scroll, .calendar-body { -webkit-overflow-scrolling: touch; }

  .calendar-toolbar { flex-direction: column; align-items: stretch; gap: 10px; }
  .cal-nav { justify-content: space-between; }
  #calViewSwitch { overflow-x: auto; }

  .cal-month-cell { min-height: 60px; padding: 4px; }
  .cal-month-date { font-size: 11px; }
  .cal-month-chip { font-size: 9px; }

  .workload-toolbar { flex-direction: column; }

  .study-selector-controls { flex-direction: column; align-items: stretch; }
  .study-selector-controls input { max-width: 100% !important; }

  .notif-settings { max-width: 100%; }

  .course-row { flex-wrap: wrap; }
  .course-row .title { flex: 1 1 auto; min-width: 120px; }
  .course-row .checkbox-group { order: -1; }

  .cat-row { flex-wrap: wrap; row-gap: 6px; }
  .cat-row .progress-wrap { flex-basis: 100%; order: 1; }

  .study-section-header { flex-wrap: wrap; row-gap: 4px; }
}

@media (max-width: 480px) {
  .topbar h1 { display: none; }
  .cal-month-cell { min-height: 52px; }
  .cal-month-chip { font-size: 8px; padding: 1px 3px; }
  .group-picker { min-width: 220px; max-width: calc(100vw - 24px); }
}