/* ─── TOKENS ────────────────────────────────────── */
:root {
  --bg:          #0d1117;
  --bg-card:     #161b22;
  --bg-card-2:   #1c2128;
  --bg-hover:    #21262d;

  --green:       #39d353;
  --green-faint: rgba(57,211,83,.07);
  --green-glow:  rgba(57,211,83,.18);

  --blue:        #58a6ff;
  --orange:      #f0883e;
  --red:         #f85149;
  --yellow:      #e3b341;
  --purple:      #a371f7;

  --border:      rgba(48,54,61,.9);
  --border-h:    rgba(57,211,83,.35);

  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --text-faint:  #484f58;

  --radius:      8px;
  --radius-sm:   6px;
  --radius-xs:   4px;
  --mono:        'JetBrains Mono', monospace;
  --sans:        'Inter', sans-serif;

  --nav-h:       52px;
  --sidebar-w:   220px;

  /* priority */
  --p-critical:  #f85149;
  --p-high:      #f0883e;
  --p-medium:    #e3b341;
  --p-low:       #39d353;
  --p-overdue:   #ff6b6b;

  /* status — mirrors the spreadsheet's Completed / In Progress columns */
  --s-todo:        #58a6ff;
  --s-in_progress: #e3b341;
  --s-completed:   #39d353;
  --s-skipped:     #6e7681;
}

[data-theme="light"] {
  --bg:          #f6f8fa;
  --bg-card:     #ffffff;
  --bg-card-2:   #f0f2f4;
  --bg-hover:    #eaeef2;

  --green:       #1a7f37;
  --green-faint: rgba(26,127,55,.07);
  --green-glow:  rgba(26,127,55,.15);

  --blue:        #0969da;
  --orange:      #bc4c00;
  --red:         #cf222e;
  --yellow:      #9a6700;

  --border:      rgba(208,215,222,.9);
  --border-h:    rgba(26,127,55,.4);

  --text:        #1f2328;
  --text-muted:  #656d76;
  --text-faint:  #adbac7;

  --p-critical:  #cf222e;
  --p-high:      #bc4c00;
  --p-medium:    #9a6700;
  --p-low:       #1a7f37;

  --s-todo:        #0969da;
  --s-in_progress: #9a6700;
  --s-completed:   #1a7f37;
  --s-skipped:     #6e7781;
}

/* ─── RESET ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--sans); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5;
  overflow: hidden;
}
button { cursor: pointer; font-family: inherit; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ─── AUTH SCREEN ────────────────────────────────── */
#auth-screen {
  position: fixed; inset: 0;
  display: grid; place-items: center;
  background: radial-gradient(circle at 20% 20%, #131a23 0%, var(--bg) 55%);
  overflow: hidden;
  z-index: 100;
}
[data-theme="light"] #auth-screen {
  background: radial-gradient(circle at 20% 20%, #e8eef6 0%, var(--bg) 58%);
}
#auth-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}
#auth-screen .hero-bg {
  position: absolute; inset: -15%; z-index: 0;
  background:
    radial-gradient(600px 400px at 10% 30%, rgba(57,211,83,.07), transparent 65%),
    radial-gradient(400px 300px at 85% 15%, rgba(57,211,83,.04), transparent 65%);
}
[data-theme="light"] #auth-screen .hero-bg {
  background:
    radial-gradient(640px 440px at 10% 30%, rgba(26,127,55,.18), transparent 66%),
    radial-gradient(500px 360px at 85% 15%, rgba(9,105,218,.11), transparent 69%);
}
.auth-window {
  width: min(460px, calc(100% - 32px));
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
  position: relative; z-index: 1;
  overflow: hidden;
}
.auth-body { padding: 28px; }
.auth-hint {
  color: var(--text-muted); font-size: 13px;
  margin-bottom: 20px; max-width: 42ch;
}
.auth-error {
  font-family: var(--mono); font-size: 12px;
  color: var(--red); margin-top: 8px; margin-bottom: 4px;
}
.auth-back {
  font-family: var(--mono); font-size: 12px;
  color: var(--text-muted); margin-top: 14px; display: block; text-align: center; width: 100%;
}
.auth-back:hover { color: var(--green); }
.term-titlebar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  background: var(--bg-card-2);
}
.term-dots { display: flex; gap: 6px; }
.term-dot { width: 10px; height: 10px; border-radius: 50%; }
.term-dot.red    { background: #ff5f57; }
.term-dot.yellow { background: #febc2e; }
.term-dot.green  { background: #28c840; }
.term-title { font-family: var(--mono); color: var(--text-muted); font-size: 12px; }

.section-label {
  font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .08em;
  color: var(--green); margin-bottom: 10px;
}
.prompt-line { display: flex; align-items: baseline; gap: 10px; margin-bottom: 20px; }
.prompt-sign { color: var(--green); font-family: var(--mono); font-weight: 700; }
.section-title { font-family: var(--mono); font-size: clamp(1rem,2.5vw,1.2rem); font-weight: 600; }
.cmd-hl { color: var(--green); }

.input-group { margin-bottom: 16px; }
.input-label { display: block; font-family: var(--mono); font-size: 11px; color: var(--text-muted); margin-bottom: 6px; letter-spacing: .05em; }
.term-input {
  width: 100%; padding: 10px 12px; background: var(--bg-card-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-family: var(--mono); font-size: 13px;
  transition: border-color .15s, box-shadow .15s;
}
.term-input:focus { outline: none; border-color: var(--border-h); box-shadow: 0 0 0 3px var(--green-faint); }
.otp-input { letter-spacing: .6em; text-align: center; font-size: 20px; font-weight: 600; }
.term-textarea { resize: vertical; min-height: 80px; max-height: 180px; }
.term-select {
  width: 100%; padding: 10px 12px; background: var(--bg-card-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-family: var(--mono); font-size: 13px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238b949e' stroke-width='1.5' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}
.term-select:focus { border-color: var(--border-h); box-shadow: 0 0 0 3px var(--green-faint); }

.auth-btn {
  width: 100%; padding: 11px; background: var(--green); color: #0d1117;
  border-radius: var(--radius-sm); font-family: var(--mono); font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: transform .1s, box-shadow .15s;
}
.auth-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 14px var(--green-glow); }
.auth-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(13,17,23,.3); border-top-color: #0d1117;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.btn-ghost {
  padding: 9px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-muted); font-family: var(--mono); font-size: 12px; transition: all .15s;
}
.btn-ghost:hover { border-color: var(--border-h); color: var(--text); }

/* ─── TOP NAV ───────────────────────────────────── */
.topnav {
  height: var(--nav-h); display: flex; align-items: center;
  padding: 0 14px; border-bottom: 1px solid var(--border);
  background: var(--bg-card); gap: 10px;
}
.topnav-left { display: flex; align-items: center; gap: 8px; flex: 1; }
.logo-mark { color: var(--green); font-size: 18px; font-weight: 700; line-height: 1; }
.logo-text { font-family: var(--mono); font-size: 13px; font-weight: 600; white-space: nowrap; }
.logo-sep { color: var(--text-muted); margin: 0 3px; }
.topnav-center { display: flex; align-items: center; justify-content: center; flex: 1; }
.topnav-right { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: flex-end; }
.view-toggle { display: inline-flex; gap: 2px; background: var(--bg-card-2); border-radius: var(--radius-sm); padding: 3px; border: 1px solid var(--border); width: fit-content; max-width: 100%; }
.view-btn { padding: 6px 12px; border-radius: 4px; color: var(--text-muted); transition: background .15s, color .15s; flex: 1 1 0; min-width: 0; white-space: nowrap; }
.view-btn.active { background: var(--green-faint); color: var(--green); }
.view-btn:hover:not(.active) { background: var(--bg-hover); color: var(--text); }
.icon-btn { padding: 8px; border-radius: var(--radius-sm); color: var(--text-muted); transition: background .15s, color .15s; }
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }
.icon-btn.spin svg { animation: spin .6s linear; }
.sidebar-toggle-btn { display: none; }

/* ─── LAYOUT ────────────────────────────────────── */
.layout {
  display: flex; height: calc(100vh - var(--nav-h));
  min-height: 0;
}
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0; background: var(--bg-card);
  border-right: 1px solid var(--border); overflow-y: auto;
  padding: 14px 0 20px; display: flex; flex-direction: column; gap: 4px;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.sidebar-section { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.sidebar-section:last-child { border-bottom: none; }
.sidebar-label {
  font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .1em;
  color: var(--text-faint); margin-bottom: 8px; padding: 0 4px;
}
.project-list { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
.project-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 8px;
  border-radius: var(--radius-xs); cursor: pointer; transition: background .15s;
  border: 1px solid transparent;
}
.project-item:hover { background: var(--bg-hover); }
.project-item.active { background: var(--green-faint); border-color: rgba(57,211,83,.2); }
.project-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.project-name { flex: 1; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.project-count { font-family: var(--mono); font-size: 11px; color: var(--text-muted); }
.sidebar-add-btn {
  width: 100%; text-align: left; padding: 7px 8px; font-family: var(--mono); font-size: 11px;
  color: var(--text-muted); border-radius: var(--radius-xs); transition: all .15s;
}
.sidebar-add-btn:hover { color: var(--green); background: var(--green-faint); }
.sidebar-manage-btn { margin-top: 2px; }
.sidebar-export-btn { margin-top: 2px; }
.danger-btn { color: var(--red) !important; border-color: rgba(248,81,73,.3) !important; }
.danger-btn:hover { color: var(--red) !important; background: rgba(248,81,73,.12) !important; }
.mobile-view-toggle { display: none; }
.sidebar-backdrop { display: none; }
.auth-btn.danger-btn { background: var(--red); color: #fff; }
.auth-btn.danger-btn:hover { box-shadow: 0 4px 14px rgba(248,81,73,.3); }

.filter-group { margin-bottom: 12px; }
.filter-label { font-family: var(--mono); font-size: 11px; color: var(--text-muted); margin-bottom: 6px; padding: 0 4px; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip {
  padding: 4px 9px; border-radius: 20px; border: 1px solid var(--border);
  font-family: var(--mono); font-size: 11px; color: var(--text-muted); transition: all .15s;
}
.chip:hover { border-color: var(--green); color: var(--green); }
.chip.active { background: var(--green-faint); border-color: var(--border-h); color: var(--green); }
.chip.status-todo.active        { background: rgba(88,166,255,.1);  border-color: rgba(88,166,255,.4);  color: var(--s-todo); }
.chip.status-in_progress.active { background: rgba(227,179,65,.1);  border-color: rgba(227,179,65,.4);  color: var(--s-in_progress); }
.chip.status-completed.active   { background: var(--green-faint);   border-color: var(--border-h);      color: var(--s-completed); }
.chip.status-skipped.active     { background: rgba(110,118,129,.12); border-color: rgba(110,118,129,.4); color: var(--s-skipped); }
.chip.p-critical.active  { background: rgba(248,81,73,.1);  border-color: rgba(248,81,73,.4);  color: var(--p-critical); }
.chip.p-high.active      { background: rgba(240,136,62,.1); border-color: rgba(240,136,62,.4); color: var(--p-high); }
.chip.p-medium.active    { background: rgba(227,179,65,.1); border-color: rgba(227,179,65,.4); color: var(--p-medium); }
.chip.p-low.active       { background: var(--green-faint);  border-color: var(--border-h);     color: var(--p-low); }
.chip.overdue.active { background: rgba(255,107,107,.12); border-color: rgba(255,107,107,.4); color: var(--p-overdue); }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.stat-card {
  background: var(--bg-card-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px; text-align: center;
}
.stat-num { font-family: var(--mono); font-size: 18px; font-weight: 700; color: var(--green); line-height: 1; }
.stat-num.warn { color: var(--p-overdue); }
.stat-lbl { font-size: 10px; color: var(--text-muted); margin-top: 2px; font-family: var(--mono); }

/* grade summary panel */
.grade-summary { display: flex; flex-direction: column; gap: 8px; }
.grade-course-row { background: var(--bg-card-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 10px; }
.grade-course-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.grade-course-name { font-family: var(--mono); font-size: 11.5px; font-weight: 600; color: var(--text); }
.grade-course-pct { font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--green); }
.grade-course-pct.na { color: var(--text-faint); }
.weight-bar { height: 5px; border-radius: 3px; background: var(--bg-hover); overflow: hidden; position: relative; }
.weight-bar-fill { height: 100%; background: var(--green); border-radius: 3px; transition: width .2s; }
.grade-empty { font-family: var(--mono); font-size: 11px; color: var(--text-faint); padding: 4px; }

/* ─── SHEET VIEW (excel-style grid) ────────────────────── */
.sheet-view {
  flex: 1; overflow: hidden; display: flex; flex-direction: column;
  padding: 20px 20px 0; min-height: 0;
}
.sheet-tabs {
  display: flex; align-items: flex-end; gap: 3px; flex-shrink: 0;
  padding: 0 4px;
}
.sheet-tab {
  padding: 8px 16px 7px; font-family: var(--mono); font-size: 12px; font-weight: 600;
  color: var(--text-muted); background: var(--bg-card-2);
  border: 1px solid var(--border); border-bottom: none;
  border-radius: 6px 6px 0 0; transition: all .12s; letter-spacing: .02em;
}
.sheet-tab:hover { color: var(--text); background: var(--bg-hover); }
.sheet-tab.active {
  color: #1a1a1a; background: #ffffff; border-color: #c4c9cf;
  position: relative; top: 1px; box-shadow: 0 -2px 6px rgba(0,0,0,.08);
}
.sheet-panel {
  flex: 1; min-height: 0; overflow: hidden;
  background: #ffffff; border: 1px solid #c4c9cf; border-radius: 0 8px 8px 8px;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
  display: flex; flex-direction: column;
  margin-bottom: 20px;
}
.sheet-table-wrap { flex: 1; overflow: auto; min-height: 0; }
.sheet-table { width: 100%; border-collapse: collapse; font-family: var(--sans); font-size: 13px; color: #1a1a1a; }
.sheet-table thead th {
  position: sticky; top: 0; z-index: 2;
  background: #33475b; color: #ffffff; font-weight: 700; font-size: 12.5px;
  padding: 9px 10px; text-align: left; border: 1px solid #26374a; white-space: nowrap;
}
.sheet-table thead th.sheet-gap { background: #f2f2f2; border-color: #e2e2e2; width: 6px; padding: 0; }
.sheet-sort-btn { display: inline-flex; align-items: center; gap: 5px; color: #ffffff; }
.sheet-sort-btn:hover { color: #cfe3ff; }
.sheet-sort-caret {
  display: inline-flex; align-items: center; justify-content: center;
  width: 14px; height: 14px; background: rgba(255,255,255,.14); border-radius: 2px; font-size: 9px;
}
.sheet-sort-btn.active .sheet-sort-caret { background: rgba(255,255,255,.32); }
.sheet-table tbody td {
  padding: 7px 10px; border: 1px solid #dcdfe3; vertical-align: middle; white-space: nowrap;
}
.sheet-table tbody td.sheet-gap { background: #f2f2f2; border-color: #e2e2e2; width: 6px; padding: 0; }
.sheet-table tbody td.sheet-progress { white-space: normal; min-width: 220px; cursor: pointer; }
.sheet-table tbody td.sheet-name { cursor: pointer; font-weight: 500; min-width: 170px; white-space: normal; }
.sheet-table tbody td.sheet-course { cursor: pointer; }
.sheet-table tbody td.sheet-weight { cursor: pointer; text-align: right; font-variant-numeric: tabular-nums; }
.sheet-table tbody td.sheet-date { cursor: pointer; font-weight: 600; text-align: center; font-variant-numeric: tabular-nums; }
.sheet-table tbody tr:hover td { filter: brightness(0.97); }

.sheet-row-completed td { background: #d9d9d9; font-style: italic; color: #595959; text-decoration: line-through; }
.sheet-row-completed td.sheet-check-cell { text-decoration: none; }
.sheet-row-skipped td { background: #e4dcf2; font-style: italic; color: #6b5d85; text-decoration: line-through; }
.sheet-row-skipped td.sheet-check-cell { text-decoration: none; }
.sheet-row-overdue td { background: #f4b6b6; }
.sheet-row-plain td { background: #ffffff; }
.sheet-row-soon td { background: #fdeeba; }

.sheet-date-overdue { background: #b23b3b !important; color: #ffffff !important; }
.sheet-date-soon     { background: #b7a324 !important; color: #ffffff !important; }
.sheet-date-upcoming { background: #f2df8a !important; color: #4a4318 !important; }
.sheet-date-ongoing   { color: #6b6b6b; font-style: italic; }

.sheet-weight-value { color: #1a3fae; font-weight: 600; }
.sheet-weight-na { color: #9a9a9a; }

.sheet-check-cell { text-align: center; width: 44px; }
.sheet-checkbox {
  width: 20px; height: 20px; border-radius: 3px; border: 1.5px solid #8a949e;
  display: inline-flex; align-items: center; justify-content: center;
  background: #ffffff; cursor: pointer; transition: all .1s;
}
.sheet-checkbox:hover { border-color: #33475b; }
.sheet-checkbox svg { opacity: 0; transition: opacity .1s; }
.sheet-checkbox.checked svg { opacity: 1; }
.sheet-checkbox.completed.checked { background: #4caf50; border-color: #3d8b40; }
.sheet-checkbox.in_progress.checked { background: #5b8def; border-color: #3f6bc7; }

.sheet-empty-state {
  padding: 60px 20px; text-align: center; color: #8a8a8a; font-family: var(--mono); font-size: 13px;
}

[data-theme="light"] .sheet-panel { box-shadow: 0 4px 18px rgba(0,0,0,.12); }

@media (max-width: 900px) {
  .sheet-view { padding: 14px 14px 0; }
  .sheet-table tbody td.sheet-progress { min-width: 160px; }
}

/* ─── MAIN ──────────────────────────────────────── */
.main-content {
  flex: 1; overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 0;
}

/* board */
.board-view {
  flex: 1; overflow-x: auto; overflow-y: hidden;
  padding: 20px;
  min-height: 0;
}
.board-columns {
  display: flex; gap: 14px;
  height: 100%; min-height: 0;
  width: max-content; min-width: 100%;
  align-items: stretch;
}
.board-col {
  width: 270px; flex-shrink: 0;
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden; height: 100%;
  min-height: 0;
}
.col-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px; border-bottom: 1px solid var(--border);
  background: var(--bg-card-2); flex-shrink: 0;
}
.col-dot { width: 8px; height: 8px; border-radius: 50%; }
.col-name { font-family: var(--mono); font-size: 12px; font-weight: 600; flex: 1; }
.col-count { font-family: var(--mono); font-size: 11px; color: var(--text-muted); }
.col-add { padding: 2px 6px; border-radius: var(--radius-xs); font-family: var(--mono); font-size: 14px; color: var(--text-muted); transition: color .15s, background .15s; }
.col-add:hover { color: var(--green); background: var(--green-faint); }
.col-cards {
  flex: 1 1 0; overflow-y: auto; padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
  min-height: 0;
  position: relative;
}
.col-cards::-webkit-scrollbar { width: 4px; }
.col-cards::-webkit-scrollbar-track { background: transparent; }
.col-cards::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.col-cards.is-empty { min-height: 120px; justify-content: center; align-items: center; }
.col-cards.is-empty::before {
  content: attr(data-empty-label);
  font-family: var(--mono); font-size: 11px; color: var(--text-faint);
  text-align: center; pointer-events: none;
}

/* assignment cards */
.assignment-card {
  background: var(--bg-card-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px;
  border-left: 3px solid var(--text-faint);
  cursor: pointer; transition: border-color .15s, box-shadow .15s;
}
.assignment-card:hover { border-color: var(--border-h); box-shadow: 0 4px 12px rgba(0,0,0,.3); }
.assignment-card.dragging { opacity: .5; }
.assignment-card.ghost { opacity: .15; }
.assignment-card[data-priority="critical"] { border-left-color: var(--p-critical); }
.assignment-card[data-priority="high"]     { border-left-color: var(--p-high); }
.assignment-card[data-priority="medium"]   { border-left-color: var(--p-medium); }
.assignment-card[data-priority="low"]      { border-left-color: var(--p-low); }
.assignment-card[data-status="skipped"] { opacity: .6; }
.assignment-card[data-status="skipped"] .card-title { text-decoration: line-through; text-decoration-color: var(--text-faint); }
.assignment-card[data-status="completed"] .card-title { color: var(--text-muted); }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.card-title { font-size: 13px; font-weight: 500; line-height: 1.4; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.badge {
  padding: 2px 7px; border-radius: 4px; font-family: var(--mono); font-size: 10px;
  border: 1px solid var(--border); color: var(--text-muted);
}
.badge-course { color: var(--blue); background: rgba(88,166,255,.1); border-color: rgba(88,166,255,.3); }
.badge-weight { color: var(--purple); background: rgba(163,113,247,.1); border-color: rgba(163,113,247,.3); }
.badge-grade { color: var(--green); background: var(--green-faint); border-color: var(--border-h); }
.badge-overdue { color: var(--p-overdue); background: rgba(255,107,107,.12); border-color: rgba(255,107,107,.4); }
.badge-soon { color: var(--yellow); background: rgba(227,179,65,.12); border-color: rgba(227,179,65,.4); }
.overdue-dot { margin-right: 4px; }
.badge-semester {
  padding: 2px 7px 2px 6px; border-radius: 4px; font-family: var(--mono); font-size: 10px;
  border: 1px solid var(--border); color: var(--text-muted);
  display: inline-flex; align-items: center; gap: 5px;
}
.badge-semester-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.card-due { font-family: var(--mono); font-size: 10px; color: var(--text-faint); margin-left: auto; }

/* list view */
.list-view { flex: 1; overflow: auto; padding: 20px; min-height: 0; }
.list-sections { display: flex; flex-direction: column; gap: 20px; }
.list-table-wrap { overflow-x: auto; min-height: 0; }
.assignment-table { width: 100%; border-collapse: collapse; }
.assignment-table th {
  text-align: left; padding: 8px 12px; font-family: var(--mono); font-size: 10.5px;
  color: var(--text-muted); border-bottom: 1px solid var(--border); white-space: nowrap;
}
.sort-btn { display: inline-flex; align-items: center; gap: 4px; color: var(--text-muted); }
.sort-btn:hover { color: var(--green); }
.sort-btn.active { color: var(--green); }
.sort-indicator { font-size: 10px; opacity: .8; }
.assignment-table td { padding: 10px 12px; border-bottom: 1px solid rgba(48,54,61,.5); vertical-align: middle; }
.assignment-table tr:hover td { background: var(--bg-hover); }
.assignment-table tr:last-child td { border-bottom: none; }
.td-title { font-size: 13px; max-width: 300px; cursor: pointer; }
.td-actions { display: flex; gap: 4px; justify-content: flex-end; }
.row-btn { padding: 4px 8px; border-radius: var(--radius-xs); font-family: var(--mono); font-size: 11px; color: var(--text-muted); border: 1px solid transparent; transition: all .15s; }
.row-btn:hover { border-color: var(--border-h); color: var(--green); background: var(--green-faint); }
.row-btn.danger:hover { border-color: rgba(248,81,73,.4); color: var(--red); background: rgba(248,81,73,.1); }
.status-pill {
  padding: 3px 9px; border-radius: 20px; font-family: var(--mono); font-size: 11px;
  border: 1px solid var(--border); display: inline-block;
}
.status-todo         { color: var(--s-todo);        border-color: rgba(88,166,255,.3);  background: rgba(88,166,255,.07); }
.status-in_progress  { color: var(--s-in_progress); border-color: rgba(227,179,65,.3);  background: rgba(227,179,65,.07); }
.status-completed    { color: var(--s-completed);   border-color: var(--border-h);      background: var(--green-faint); }
.status-skipped      { color: var(--s-skipped);     border-color: rgba(110,118,129,.35); background: rgba(110,118,129,.1); text-decoration: line-through; text-decoration-color: rgba(110,118,129,.5); }

.priority-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.priority-dot.critical { background: var(--p-critical); }
.priority-dot.high     { background: var(--p-high); }
.priority-dot.medium   { background: var(--p-medium); }
.priority-dot.low      { background: var(--p-low); }
.priority-dot.overdue  { background: var(--p-overdue); }

/* grades view */
.grades-view { flex: 1; overflow: auto; padding: 24px; min-height: 0; }
.grades-header { margin-bottom: 20px; }
.grades-header h2 { font-family: var(--mono); font-size: 16px; margin-bottom: 4px; }
.grades-header p { color: var(--text-muted); font-size: 13px; }
.grades-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.grade-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px;
}
.grade-card-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 4px; }
.grade-card-course { font-family: var(--mono); font-weight: 700; font-size: 14px; }
.grade-card-pct { font-family: var(--mono); font-weight: 700; font-size: 20px; color: var(--green); }
.grade-card-pct.na { color: var(--text-faint); font-size: 14px; }
.grade-card-sub { font-size: 11px; color: var(--text-muted); margin-bottom: 10px; }
.grade-card .weight-bar { height: 7px; margin-bottom: 10px; }
.grade-card-list { display: flex; flex-direction: column; gap: 4px; }
.grade-card-item { display: flex; justify-content: space-between; font-size: 12px; padding: 4px 0; border-bottom: 1px solid rgba(48,54,61,.4); }
.grade-card-item:last-child { border-bottom: none; }
.grade-card-item-name { color: var(--text-muted); }
.grade-card-item-val { font-family: var(--mono); }

/* ─── FAB ───────────────────────────────────────── */
.fab-wrap { position: fixed; right: 24px; bottom: 24px; z-index: 50; display: flex; flex-direction: column-reverse; align-items: flex-end; gap: 10px; }
.fab-wrap .fab {
  width: 52px; height: 52px; border-radius: 50%; background: var(--green); color: #0d1117;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.4); transition: transform .15s, box-shadow .15s;
}
.fab-menu {
  display: flex; flex-direction: column; gap: 8px;
  opacity: 0; pointer-events: none; transform: translateY(6px); transition: opacity .15s, transform .15s;
}
.fab-wrap:hover .fab-menu, .fab-wrap:focus-within .fab-menu, .fab-wrap.is-open .fab-menu {
  opacity: 1; pointer-events: auto; transform: translateY(0);
}
.fab-menu-btn {
  padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px;
  font-family: var(--mono); font-size: 12px; color: var(--text-muted); box-shadow: 0 4px 14px rgba(0,0,0,.3);
  white-space: nowrap;
}
.fab-menu-btn:hover { border-color: var(--border-h); color: var(--green); background: var(--green-faint); }
.fab:hover { transform: scale(1.08) rotate(90deg); box-shadow: 0 6px 24px var(--green-glow); }

/* ─── MODALS ────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(1,4,9,.7);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  backdrop-filter: blur(4px);
}
.modal {
  width: min(580px, 100%); background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: 0 12px 48px rgba(0,0,0,.5);
  overflow: hidden; max-height: 90vh; display: flex; flex-direction: column;
}
.modal-lg { width: min(680px, 100%); }
.modal-sm { width: min(420px, 100%); }
.modal-header {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  background: var(--bg-card-2); flex-shrink: 0;
}
.modal-title { font-family: var(--mono); font-size: 13px; color: var(--text-muted); }
.modal-body { padding: 24px; overflow-y: auto; flex: 1; }
.modal-body::-webkit-scrollbar { width: 4px; }
.modal-body::-webkit-scrollbar-thumb { background: var(--border); }
.form-row { margin-bottom: 16px; }
.form-label { display: block; font-family: var(--mono); font-size: 11px; color: var(--text-muted); margin-bottom: 6px; letter-spacing: .05em; }
.req { color: var(--red); }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.modal-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.color-picker-row { display: flex; align-items: center; gap: 10px; }
.color-input { width: 44px; height: 36px; padding: 2px; background: var(--bg-card-2); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; }
.color-val { font-family: var(--mono); font-size: 13px; color: var(--text-muted); }
.form-help { font-family: var(--mono); font-size: 10.5px; color: var(--text-faint); margin-top: 6px; }

.manage-section { padding-top: 6px; }
.manage-section-title { font-family: var(--mono); font-size: 11px; font-weight: 700; color: var(--green); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; }
.manage-actions { margin-top: 8px; }
.manage-divider { height: 1px; background: var(--border); margin: 20px 0; }
.danger-zone .manage-section-title { color: var(--red); }
.nice-checkbox { width: 15px; height: 15px; accent-color: var(--green); }

/* ─── TOAST ─────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 300; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 18px; font-family: var(--mono); font-size: 13px;
  box-shadow: 0 4px 20px rgba(0,0,0,.4);
  animation: slide-up .2s ease;
}
.toast.success { border-color: var(--border-h); color: var(--green); }
.toast.error   { border-color: rgba(248,81,73,.4); color: var(--red); }
@keyframes slide-up { from { opacity:0; transform: translate(-50%,10px); } to { opacity:1; transform: translate(-50%,0); } }

/* ─── SCROLLBAR GLOBAL ────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ─── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar-toggle-btn { display: inline-flex; }
  .layout { position: relative; }
  .sidebar {
    position: fixed; top: var(--nav-h); left: 0; bottom: 0; z-index: 60;
    transform: translateX(-100%); transition: transform .2s ease;
    box-shadow: 8px 0 30px rgba(0,0,0,.4);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop {
    display: block; position: fixed; inset: var(--nav-h) 0 0 0; z-index: 55;
    background: rgba(0,0,0,.5); opacity: 0; pointer-events: none; transition: opacity .2s;
  }
  .sidebar-backdrop.open { opacity: 1; pointer-events: auto; }
  .mobile-view-toggle { display: block; }
  .topnav-center { display: none; }
  .form-grid-3 { grid-template-columns: 1fr; }
}

[data-theme="light"] .topnav    { background: #fff; }
[data-theme="light"] .sidebar   { background: #fff; }
[data-theme="light"] .board-col { background: #f6f8fa; }