/* Lynxe — sharp, neutral, Linear/Apple/Notion-inspired
   Light & dark themes. Color used only for subject dots and accent. */

@import url('https://rsms.me/inter/inter.css');

/* ================ THEMES ================ */

:root[data-theme='dark'] {
  --bg:        #0a0a0c;
  --bg-1:      #0d0d0f;
  --bg-2:      #121214;
  --bg-3:      #17171a;
  --bg-hover:  #131317;
  --bg-active: #1c1c20;
  --bg-elev:   #131317;

  --border:        #1a1a1e;
  --border-2:      #232328;
  --border-strong: #2c2c33;

  --fg:   #e8e8ea;
  --fg-2: #9d9da4;
  --fg-3: #6c6c74;
  --fg-4: #46464d;
  --fg-5: #2a2a30;

  --accent:      #5b8def;
  --accent-soft: rgba(91, 141, 239, 0.12);
  --accent-on:   #ffffff;

  --ok:     #10b981;
  --warn:   #f59e0b;
  --danger: #ef4444;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.45);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.55);
}

:root[data-theme='light'] {
  --bg:        #ffffff;
  --bg-1:      #fafafa;
  --bg-2:      #f4f4f5;
  --bg-3:      #ececed;
  --bg-hover:  #f4f4f5;
  --bg-active: #ececed;
  --bg-elev:   #ffffff;

  --border:        #ececed;
  --border-2:      #e0e0e2;
  --border-strong: #cdcdd1;

  --fg:   #0d0d10;
  --fg-2: #5a5a62;
  --fg-3: #84848c;
  --fg-4: #a8a8ae;
  --fg-5: #d4d4d8;

  --accent:      #3b6ed4;
  --accent-soft: rgba(59, 110, 212, 0.10);
  --accent-on:   #ffffff;

  --ok:     #0a8a5e;
  --warn:   #b76e00;
  --danger: #c43d3d;

  --shadow-sm: 0 1px 2px rgba(15,15,20,0.04);
  --shadow-md: 0 6px 20px rgba(15,15,20,0.06);
  --shadow-lg: 0 20px 60px rgba(15,15,20,0.10);
}

:root {
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, "SF Pro Text", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;

  --r-1: 4px;
  --r-2: 6px;
  --r-3: 8px;
  --r-4: 10px;

  --sidebar-w: 220px;
  --sidebar-collapsed-w: 48px;
  --header-h: 40px;
}

@supports (font-variation-settings: normal) {
  :root { --font-sans: 'Inter var', ui-sans-serif, system-ui, sans-serif; }
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv02','cv03','cv04','cv11','ss01';
  letter-spacing: -0.006em;
  overflow: hidden;
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
input, textarea, select { font: inherit; color: inherit; background: none; border: none; outline: none; }
input::placeholder, textarea::placeholder { color: var(--fg-4); }
a { color: inherit; text-decoration: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--fg-5);
  border: 3px solid var(--bg);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--fg-4); }

/* App shell */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
  transition: grid-template-columns 0.18s cubic-bezier(.2,.8,.2,1);
}
.app.collapsed { grid-template-columns: var(--sidebar-collapsed-w) 1fr; }

/* ================ SIDEBAR ================ */

.sidebar {
  border-right: 1px solid var(--border);
  background: var(--bg-1);
  display: flex; flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.sb-head {
  height: var(--header-h);
  padding: 0 8px;
  display: flex; align-items: center; gap: 4px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.app.collapsed .sb-head { padding: 0; justify-content: center; }

.brand {
  flex: 1;
  display: flex; align-items: center; gap: 8px;
  padding: 4px 6px;
  border-radius: var(--r-2);
  cursor: pointer;
  transition: background 0.08s;
  min-width: 0;
}
.brand:hover { background: var(--bg-hover); }
.app.collapsed .brand { flex: none; padding: 4px; }

.brand-mark {
  width: 22px; height: 22px;
  border-radius: 5px;
  background: var(--fg);
  color: var(--bg);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-weight: 600;
}
.brand-name {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
}
.app.collapsed .brand-name,
.app.collapsed .brand-chev,
.app.collapsed .sb-search,
.app.collapsed .nav-label,
.app.collapsed .nav-count,
.app.collapsed .sb-foot-text,
.app.collapsed .sb-foot-settings { display: none; }

.brand-chev { color: var(--fg-3); margin-left: auto; flex-shrink: 0; }

.icon-btn {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-1);
  color: var(--fg-3);
  transition: background 0.08s, color 0.08s;
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--fg); }

.sb-search {
  margin: 8px 8px 4px;
  display: flex; align-items: center; gap: 7px;
  padding: 5px 8px;
  border-radius: var(--r-2);
  color: var(--fg-3);
  border: 1px solid transparent;
  cursor: text;
  transition: background 0.08s, border-color 0.08s;
  flex-shrink: 0;
}
.sb-search:hover { background: var(--bg-hover); color: var(--fg-2); }
.sb-search input { flex: 1; font-size: 12.5px; }
.kbd {
  font-family: var(--font-sans);
  font-size: 10.5px;
  color: var(--fg-3);
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 0 5px;
  border-radius: 3px;
  font-weight: 500;
  height: 16px;
  line-height: 14px;
}

.nav { padding: 6px; flex: 1; overflow-y: auto; }
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 5px 8px;
  border-radius: var(--r-2);
  font-size: 12.5px;
  color: var(--fg-2);
  cursor: pointer;
  transition: background 0.08s, color 0.08s;
  margin-bottom: 1px;
  position: relative;
}
.nav-item:hover { background: var(--bg-hover); color: var(--fg); }
.nav-item.active { background: var(--bg-2); color: var(--fg); }
.nav-item .nav-ico { color: var(--fg-3); flex-shrink: 0; }
.nav-item.active .nav-ico { color: var(--fg); }
.nav-item .nav-count {
  margin-left: auto;
  font-size: 10.5px;
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
}
.app.collapsed .nav-item { justify-content: center; padding: 6px; }

.sb-section {
  font-size: 10.5px;
  color: var(--fg-3);
  padding: 14px 10px 4px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.app.collapsed .sb-section { display: none; }

.sb-foot {
  border-top: 1px solid var(--border);
  padding: 6px;
  flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
}
.app.collapsed .sb-foot { padding: 6px 0; justify-content: center; }
.sb-foot-user {
  display: flex; align-items: center; gap: 8px;
  flex: 1;
  padding: 4px 6px;
  border-radius: var(--r-2);
  cursor: pointer;
  transition: background 0.08s;
  min-width: 0;
}
.sb-foot-user:hover { background: var(--bg-hover); }
.app.collapsed .sb-foot-user { flex: none; padding: 4px; }
.user-mark {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 500;
  color: var(--fg);
  flex-shrink: 0;
}
.sb-foot-text {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  line-height: 1.2;
  color: var(--fg);
}
.sb-foot-settings { color: var(--fg-3); }

/* Sidebar collapse handle (slim) */
.sb-collapse-toggle {
  position: absolute;
  top: 0; bottom: 0;
  width: 6px;
  cursor: ew-resize;
  z-index: 5;
  background: transparent;
}
.sb-collapse-toggle:hover { background: var(--accent-soft); }

/* ================ MAIN ================ */

.main {
  display: flex; flex-direction: column;
  min-width: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
}
.topbar {
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 14px;
  gap: 8px;
  flex-shrink: 0;
}
.topbar-left { display: flex; align-items: center; gap: 8px; min-width: 0; }
.crumbs {
  font-size: 13px;
  display: flex; align-items: center; gap: 7px;
  color: var(--fg-3);
}
.crumbs > .c-last { color: var(--fg); font-weight: 500; }
.crumb-sep { color: var(--fg-5); }
.tb-actions { margin-left: auto; display: flex; align-items: center; gap: 6px; }

.content { flex: 1; overflow-y: auto; min-height: 0; }

/* ================ BUTTONS ================ */

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0 9px;
  border-radius: var(--r-2);
  font-size: 12.5px; font-weight: 500;
  border: 1px solid var(--border-2);
  background: var(--bg);
  color: var(--fg);
  transition: background 0.08s, border-color 0.08s;
  white-space: nowrap;
  height: 26px;
}
.btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.btn.primary {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}
.btn.primary:hover { background: var(--fg); border-color: var(--fg); opacity: 0.92; }
.btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--fg-2);
}
.btn.ghost:hover { background: var(--bg-hover); color: var(--fg); border-color: transparent; }
.btn.danger {
  background: var(--danger); color: #fff; border-color: var(--danger);
}
.btn.danger:hover { background: var(--danger); border-color: var(--danger); opacity: 0.92; }
.btn.lg { height: 30px; padding: 0 12px; }
.btn.xl { height: 36px; padding: 0 18px; font-size: 13px; }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.btn[disabled]:hover { background: var(--bg); border-color: var(--border-2); }

/* ================ SUBJECT DOT ================ */

.subj-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.subj-bar {
  width: 2px;
  border-radius: 1px;
  flex-shrink: 0;
  align-self: stretch;
}
.subj-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px;
  color: var(--fg-2);
  white-space: nowrap;
}

/* ================ BADGE ================ */

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10.5px;
  padding: 0 6px;
  border-radius: 3px;
  border: 1px solid var(--border-2);
  background: transparent;
  color: var(--fg-2);
  font-weight: 500;
  white-space: nowrap;
  height: 18px;
  line-height: 1;
}

/* ================ TABS ================ */

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  padding: 0 14px;
  flex-shrink: 0;
  overflow-x: auto;
}
.tab {
  padding: 9px 10px;
  font-size: 12.5px;
  color: var(--fg-3);
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: color 0.08s;
  white-space: nowrap;
}
.tab:hover { color: var(--fg-2); }
.tab.active {
  color: var(--fg);
  border-bottom-color: var(--fg);
}
.tab .tcount { color: var(--fg-4); font-variant-numeric: tabular-nums; font-size: 11px; }

/* ================ INPUTS ================ */

.input, .textarea {
  width: 100%;
  padding: 7px 10px;
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: var(--r-2);
  font-size: 12.5px;
  color: var(--fg);
  transition: border-color 0.08s, background 0.08s;
}
.input:focus, .textarea:focus {
  border-color: var(--fg-4);
}
.input.xl {
  padding: 10px 0;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.018em;
  border: none;
  background: transparent;
}
.textarea { resize: vertical; min-height: 56px; line-height: 1.5; font-family: var(--font-sans); }

.label {
  display: block;
  font-size: 11.5px;
  color: var(--fg-3);
  margin-bottom: 5px;
  font-weight: 500;
}

/* ================ OVERLAY / PANEL ================ */

.overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.12s ease;
}
:root[data-theme='light'] .overlay { background: rgba(20,20,30,0.18); }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }
@keyframes pop { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border-2);
  border-radius: var(--r-4);
  animation: pop 0.14s ease;
  display: flex; flex-direction: column;
  max-height: 90vh;
  box-shadow: var(--shadow-lg);
}
.panel-head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.panel-title { font-size: 13.5px; font-weight: 500; }
.panel-body { padding: 14px; overflow-y: auto; flex: 1; }
.panel-foot {
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}

/* ================ DROP ZONE ================ */

.drop-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--r-2);
  padding: 28px 16px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
  gap: 0;
  min-height: 90px;
}
.drop-zone:hover, .drop-zone.dz-over { border-color: var(--fg-3); background: var(--bg-1); }
.drop-zone.dz-filled { cursor: default; border-style: solid; border-color: var(--border); background: var(--bg-1); }

/* ================ CHECKBOX ================ */

.checkbox {
  width: 14px; height: 14px;
  border: 1px solid var(--fg-4);
  border-radius: 3px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 0.08s, border-color 0.08s;
  cursor: pointer;
  background: var(--bg);
}
.checkbox:hover { border-color: var(--fg-3); }
.checkbox.checked { background: var(--fg); border-color: var(--fg); }
.checkbox.checked svg { color: var(--bg); }

/* ================ PROGRESS ================ */

.progress {
  height: 2px;
  background: var(--bg-3);
  border-radius: 1px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--fg);
  transition: width 0.3s ease;
}

/* ================ ANIM ================ */

@keyframes pulseRec { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.78); } }
.rec-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--danger);
  display: inline-block;
  animation: pulseRec 1.4s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 11px; height: 11px;
  border: 1.5px solid var(--border-2);
  border-top-color: var(--fg-2);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

/* ================ UTILITY ================ */

.hstack { display: flex; align-items: center; gap: 6px; }
.vstack { display: flex; flex-direction: column; gap: 6px; }
.f1 { flex: 1; min-width: 0; }
.muted { color: var(--fg-2); }
.dim { color: var(--fg-3); }
.faint { color: var(--fg-4); }
.mono { font-family: var(--font-mono); font-feature-settings: 'tnum'; }
.tnum { font-variant-numeric: tabular-nums; }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ================ CHAT ================ */

.msg {
  padding: 8px 11px;
  border-radius: var(--r-3);
  font-size: 12.5px;
  line-height: 1.55;
  max-width: 92%;
}
.msg.ai {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg);
  align-self: flex-start;
}
.msg.user {
  background: var(--fg);
  color: var(--bg);
  align-self: flex-end;
}
.msg-meta { font-size: 10.5px; color: var(--fg-3); margin-bottom: 3px; font-weight: 500; }
.cursor-blink::after {
  content: '';
  display: inline-block;
  width: 5px; height: 11px;
  background: var(--fg);
  margin-left: 2px;
  vertical-align: -1px;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ================ NOTES LAYOUT ================ */

.notes-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  height: 100%;
  min-height: 0;
}
.subjects-col {
  border-right: 1px solid var(--border);
  padding: 10px 6px;
  overflow-y: auto;
  background: var(--bg-1);
}
.subj-row {
  display: flex; align-items: center; gap: 9px;
  padding: 5px 8px;
  border-radius: var(--r-2);
  cursor: pointer;
  font-size: 12.5px;
  color: var(--fg-2);
  transition: background 0.08s, color 0.08s;
  margin-bottom: 1px;
}
.subj-row:hover { background: var(--bg-hover); color: var(--fg); }
.subj-row.active { background: var(--bg-2); color: var(--fg); }
.subj-row .count { margin-left: auto; font-size: 10.5px; color: var(--fg-3); font-variant-numeric: tabular-nums; }

.feed-col { overflow-y: auto; padding: 18px 28px 64px; }

/* ================ LECTURE ROW ================ */

.lec-row {
  display: grid;
  grid-template-columns: 2px 1fr auto auto auto;
  gap: 12px;
  align-items: center;
  padding: 11px 12px 11px 10px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.08s;
}
.lec-row:hover { background: var(--bg-1); }
.lec-row .bar { align-self: stretch; border-radius: 1px; }
.lec-meta { display: flex; align-items: center; gap: 8px; font-size: 11.5px; color: var(--fg-3); }
.lec-title { font-size: 13px; font-weight: 500; color: var(--fg); margin-top: 2px; }

/* ================ SECTION HEADER ================ */

.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 14px;
  gap: 16px;
}
.section-title {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.012em;
}
.section-sub { font-size: 12px; color: var(--fg-3); margin-top: 2px; }

/* ================ MISSION ================ */

.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
}
.mission-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  cursor: pointer;
  transition: border-color 0.08s, background 0.08s;
  position: relative;
  overflow: hidden;
}
.mission-card:hover { background: var(--bg-2); border-color: var(--border-2); }

.mission-view {
  display: grid;
  grid-template-columns: minmax(260px, 30%) 1fr;
  height: 100%;
  min-height: 0;
}
.mv-col { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.mv-left { border-right: 1px solid var(--border); background: var(--bg-1); }
.mv-col-head {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
  height: 32px;
}
.mv-col-body { flex: 1; overflow-y: auto; padding: 10px 12px; }

/* ================ TODAY ================ */

.today-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 36px 28px 64px;
}

/* ================ CLASSROOM ================ */

.classroom-feed {
  max-width: 820px;
  margin: 0 auto;
  padding: 14px 28px 64px;
}
.post-card {
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  margin-bottom: 6px;
  overflow: hidden;
  transition: border-color 0.08s;
}
.post-card.expanded { border-color: var(--border-2); }
.post-head {
  padding: 11px 12px;
  cursor: pointer;
  display: grid;
  grid-template-columns: 2px 1fr auto;
  gap: 12px;
  align-items: stretch;
  transition: background 0.08s;
}
.post-head:hover { background: var(--bg-2); }
.post-card.expanded .post-head { background: var(--bg-2); }

/* ================ VOLUME ROW (Notion link) ================ */

.volume-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  margin-bottom: 4px;
  cursor: pointer;
  transition: background 0.08s, border-color 0.08s;
}
.volume-row:hover { background: var(--bg-2); border-color: var(--border-2); }

.stat-link {
  padding: 2px 6px;
  border-radius: 4px;
  margin: -2px -6px;
  transition: background 0.08s;
}
.stat-link:hover { background: var(--bg-2); }
.stat-link:hover .dim { color: var(--fg-2); }
.stat-link:hover .faint { color: var(--fg-2); }

.vol-fc-chip {
  padding: 3px 7px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-1);
  color: var(--fg-2);
  cursor: pointer;
  transition: background 0.08s, border-color 0.08s, color 0.08s;
}
.vol-fc-chip:hover {
  background: var(--bg-3);
  border-color: var(--border-2);
  color: var(--fg);
}

/* ================ FLASHCARD ================ */

.flashcard {
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  padding: 10px 12px;
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.08s, background 0.08s;
  user-select: none;
}
.flashcard:hover { border-color: var(--border-strong); background: var(--bg-1); }
.flashcard .q { font-size: 12.5px; color: var(--fg); }
.flashcard .a { font-size: 12px; color: var(--fg-2); margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--border-2); }

/* ================ ROADMAP ================ */

.roadmap-day {
  display: flex; gap: 10px;
  padding: 5px 0;
  position: relative;
}
.roadmap-day .pip {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--fg-4);
  margin-top: 5px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.roadmap-day.done .pip { background: var(--fg-3); border-color: var(--fg-3); }
.roadmap-day.today .pip { background: var(--fg); border-color: var(--fg); box-shadow: 0 0 0 3px var(--accent-soft); }
.roadmap-day.due .pip { background: var(--danger); border-color: var(--danger); }
.roadmap-day::before {
  content: ''; position: absolute;
  left: 3px; top: 12px; bottom: -5px;
  width: 1px; background: var(--border-2);
}
.roadmap-day:last-child::before { display: none; }
.roadmap-day .day-content { flex: 1; min-width: 0; padding-bottom: 2px; }
.roadmap-day .day-label { font-size: 11.5px; color: var(--fg-3); display: flex; align-items: center; gap: 6px; }
.roadmap-day .day-label .day-date { color: var(--fg-4); }
.roadmap-day.today .day-label { color: var(--fg); font-weight: 500; }
.roadmap-day .day-tasks { font-size: 12px; color: var(--fg-2); margin-top: 2px; line-height: 1.45; }
.roadmap-day .day-chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 5px; }

/* ================ NOTION CHIP ================ */

.notion-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 1px 6px 1px 5px;
  font-size: 10.5px;
  color: var(--fg-2);
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color 0.08s, color 0.08s, background 0.08s;
  max-width: 100%;
  text-decoration: none;
}
.notion-chip:hover { color: var(--fg); border-color: var(--border-strong); }
.notion-chip .nc-mark {
  width: 10px; height: 10px;
  border-radius: 2px;
  background: var(--fg);
  color: var(--bg);
  font-weight: 700; font-size: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: 'Times New Roman', serif;
  flex-shrink: 0;
}

/* ================ CHAT INPUT ================ */

.chat-input-wrap {
  border-top: 1px solid var(--border);
  padding: 8px 10px;
  background: var(--bg-1);
  flex-shrink: 0;
}
.chat-input {
  display: flex; align-items: flex-end; gap: 6px;
  padding: 7px 9px;
  border: 1px solid var(--border-2);
  border-radius: var(--r-2);
  background: var(--bg);
  transition: border-color 0.08s;
}
.chat-input:focus-within { border-color: var(--fg-4); }
.chat-input textarea {
  flex: 1; resize: none;
  font-size: 12.5px; line-height: 1.45;
  min-height: 16px; max-height: 100px;
  padding: 1px 0;
  font-family: inherit;
}
.chat-send {
  width: 22px; height: 22px;
  border-radius: var(--r-1);
  background: var(--fg);
  color: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: opacity 0.08s;
}
.chat-send:disabled { opacity: 0.3; cursor: not-allowed; }

/* ================ ORCHESTRATOR ================ */

.orch-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 80;
  animation: fadeIn 0.12s ease;
}
:root[data-theme='light'] .orch-overlay { background: rgba(20,20,30,0.12); }
.orch-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 420px;
  max-width: 90vw;
  background: var(--bg-elev);
  border-left: 1px solid var(--border-2);
  z-index: 90;
  display: flex; flex-direction: column;
  animation: slideIn 0.18s cubic-bezier(.2,.8,.2,1);
  box-shadow: var(--shadow-lg);
}
.orch-trigger {
  position: fixed;
  bottom: 18px; right: 18px;
  height: 32px;
  padding: 0 12px;
  border-radius: 16px;
  background: var(--fg);
  color: var(--bg);
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12.5px; font-weight: 500;
  border: 1px solid var(--fg);
  z-index: 50;
  transition: transform 0.1s;
  box-shadow: var(--shadow-md);
}
.orch-trigger:hover { transform: translateY(-1px); }
.orch-trigger .pulse-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--bg);
  opacity: 0.7;
}

/* ================ RECORDING ================ */

.rec-fullpage {
  height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 28px;
  padding: 48px;
}
.rec-timer {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 300;
  letter-spacing: -0.025em;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.rec-bars {
  display: flex; gap: 3px;
  height: 32px;
  align-items: center;
}
.rec-bars span {
  width: 2px;
  background: var(--danger);
  border-radius: 1px;
  animation: rec-wave 1.2s ease-in-out infinite;
}
@keyframes rec-wave {
  0%, 100% { height: 5px; opacity: 0.5; }
  50% { height: 22px; opacity: 1; }
}

/* ================ NEW LECTURE ================ */

.nl-page {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 32px 80px;
}
.nl-eyebrow {
  font-size: 11px; color: var(--fg-3);
  text-transform: uppercase; letter-spacing: 0.06em;
  font-weight: 500;
  margin-bottom: 8px;
}
.nl-section { margin-top: 28px; }
.nl-section-title {
  font-size: 12.5px; font-weight: 500;
  color: var(--fg);
  margin-bottom: 4px;
  display: flex; align-items: center; gap: 8px;
}
.nl-section-help {
  font-size: 12px; color: var(--fg-3);
  margin-bottom: 12px; line-height: 1.5;
}
.attach-zone {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px;
  border: 1.5px dashed var(--border-2);
  border-radius: var(--r-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.attach-zone:hover {
  border-color: var(--fg-3);
  background: var(--bg-2);
}

/* ================ CHIP ================ */

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 5px 2px 6px;
  border-radius: 3px;
  background: var(--bg);
  border: 1px solid var(--border-2);
  font-size: 11.5px;
  color: var(--fg);
  max-width: 100%;
}
.chip .x {
  width: 13px; height: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-3);
  cursor: pointer;
  border-radius: 2px;
}
.chip .x:hover { background: var(--bg-active); color: var(--fg); }

.search-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border-2);
  border-radius: var(--r-2);
  background: var(--bg);
}
.search-list-row {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 12px;
  transition: background 0.08s;
}
.search-list-row:last-child { border-bottom: none; }
.search-list-row:hover { background: var(--bg-1); }
.search-list-row.selected { background: var(--accent-soft); }

/* ================ EMPTY ================ */

.empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--fg-3);
  font-size: 12.5px;
}

/* ================ DASHBOARD ================ */

.dash-card {
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.dash-card-head {
  display: flex; align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  height: 36px;
}
.dash-card-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
  color: var(--fg-3);
}
.dash-link {
  font-size: 11.5px;
  color: var(--fg-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  transition: color 0.08s;
}
.dash-link:hover { color: var(--fg); }
.dash-card-body { padding: 4px 6px 6px; }
.dash-row {
  padding: 8px 8px;
  border-radius: var(--r-2);
  cursor: pointer;
  transition: background 0.08s;
}
.dash-row:hover { background: var(--bg-2); }
.dash-subj-card {
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  cursor: pointer;
  transition: border-color 0.08s, background 0.08s;
}
.dash-subj-card:hover { background: var(--bg-2); border-color: var(--border-2); }

/* ================ BENTO ================ */

.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(0, auto);
  gap: 12px;
}
.bento-tile {
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
  display: flex; flex-direction: column;
  overflow: hidden;
  min-width: 0;
}
.bento-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 14px 16px 10px;
  gap: 12px;
}
.bento-eyebrow {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--fg-3);
  display: inline-flex; align-items: center; gap: 6px;
}
.bento-h1 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.018em;
  margin-top: 4px;
  display: flex; align-items: baseline; gap: 6px;
}
.bento-body {
  padding: 4px 8px 8px;
  flex: 1;
  min-height: 0;
}

/* Focus tile (hero) */
.bento-focus { grid-column: span 8; grid-row: span 2; }
.focus-progress {
  height: 2px;
  background: var(--bg-3);
  margin: 0 16px 4px;
  border-radius: 1px;
  overflow: hidden;
}
.focus-progress-fill {
  height: 100%;
  background: var(--fg);
  transition: width 0.3s ease;
}

/* Next up tile (narrow, tall) */
.bento-next { grid-column: span 4; grid-row: span 2; }
.next-hero {
  margin: 4px 12px 12px;
  padding: 14px;
  border: 1px solid var(--border-2);
  border-radius: var(--r-3);
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.08s, background 0.08s;
}
.next-hero:hover { border-color: var(--border-strong); background: var(--bg-2); }
.next-rest {
  border-top: 1px solid var(--border);
  padding: 6px 8px 10px;
}
.next-row {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px;
  border-radius: var(--r-2);
  cursor: pointer;
  transition: background 0.08s;
  min-width: 0;
}
.next-row:hover { background: var(--bg-2); }

/* Stats strip */
.bento-stats {
  grid-column: span 12;
  flex-direction: row;
  align-items: stretch;
  padding: 0;
}
.bento-stats .stat {
  flex: 1;
  padding: 16px 18px;
  cursor: pointer;
  transition: background 0.08s;
  display: flex; flex-direction: column; gap: 4px;
  min-width: 0;
}
.bento-stats .stat:hover { background: var(--bg-2); }
.stat-num {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1;
  color: var(--fg);
}
.stat-label {
  font-size: 11px;
  color: var(--fg-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* Recent lectures (wide) */
.bento-lectures { grid-column: span 7; }
.lec-mini {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px;
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.08s;
}
.lec-mini:first-child { border-top: none; }
.lec-mini:hover { background: var(--bg-2); }

/* Inbox (narrow) */
.bento-inbox { grid-column: span 5; }
.inbox-row {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.08s;
}
.inbox-row:first-child { border-top: none; }
.inbox-row:hover { background: var(--bg-2); }
.inbox-pill {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 16px; height: 14px;
  padding: 0 4px;
  border-radius: 7px;
  background: var(--fg);
  color: var(--bg);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0;
  margin-left: 4px;
}

@media (max-width: 900px) {
  .bento { grid-template-columns: 1fr; }
  .bento-focus, .bento-next, .bento-lectures, .bento-inbox { grid-column: span 1; grid-row: auto; }
  .bento-stats { flex-direction: column; }
  .stat-divider { width: auto; height: 1px; }
}

/* ================ SETTINGS ================ */

.settings-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 28px 80px;
}
.settings-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.settings-section:first-child { padding-top: 0; border-top: none; margin-top: 0; }
.settings-section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
  color: var(--fg-3);
  margin-bottom: 4px;
}
.settings-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.settings-row:last-child { border-bottom: none; }
.settings-row .row-title { font-size: 13px; color: var(--fg); font-weight: 500; }
.settings-row .row-help { font-size: 12px; color: var(--fg-3); margin-top: 2px; line-height: 1.45; }

/* Toggle */
.toggle {
  display: inline-block;
  width: 28px; height: 16px;
  border-radius: 999px;
  background: var(--fg-5);
  position: relative;
  cursor: pointer;
  transition: background 0.15s;
  flex-shrink: 0;
  vertical-align: middle;
}
.toggle::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  transition: transform 0.15s;
  box-shadow: var(--shadow-sm);
}
.toggle.on { background: var(--fg); }
.toggle.on::after { transform: translateX(12px); }

/* Theme picker swatches */
.theme-swatches { display: flex; gap: 8px; }
.theme-swatch {
  width: 64px; height: 44px;
  border-radius: var(--r-2);
  border: 1px solid var(--border-2);
  cursor: pointer;
  transition: border-color 0.08s;
  position: relative;
  overflow: hidden;
  display: flex;
}
.theme-swatch:hover { border-color: var(--fg-4); }
.theme-swatch.selected { border-color: var(--fg); box-shadow: 0 0 0 1px var(--fg); }
.theme-swatch .ts-bar { width: 18px; border-right: 1px solid var(--border-2); }
.theme-swatch .ts-content { flex: 1; padding: 5px; display: flex; flex-direction: column; gap: 3px; }
.theme-swatch .ts-line { height: 3px; border-radius: 1px; }
.theme-swatch .ts-line:nth-child(1) { width: 70%; }
.theme-swatch .ts-line:nth-child(2) { width: 50%; }
.theme-swatch .ts-line:nth-child(3) { width: 60%; }
.theme-swatch .ts-label {
  position: absolute;
  bottom: -18px; left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--fg-3);
}
.theme-swatch.selected .ts-label { color: var(--fg); font-weight: 500; }

/* ================ RESPONSIVE ================ */

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .notes-layout { grid-template-columns: 1fr; }
  .subjects-col { display: none; }
  .mission-view { grid-template-columns: 1fr; }
  .mv-left { display: none; }
  .feed-col { padding: 14px; }
  .classroom-feed { padding: 14px; }
  .today-wrap { padding: 24px 16px 64px; }
  .nl-page { padding: 28px 18px 64px; }
  .orch-panel { width: 100%; }
}

/* ================ FLASHCARDS PAGE ================ */

.fc-stage {
  display: flex; flex-direction: column;
  height: 100%;
  background: var(--bg);
}
.fc-top {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
  flex-shrink: 0;
}
.fc-top-mid {
  flex: 1;
  display: flex; align-items: center; gap: 12px;
  max-width: 520px;
  margin: 0 auto;
}
.fc-progress-track {
  flex: 1;
  height: 3px;
  background: var(--bg-3);
  border-radius: 2px;
  overflow: hidden;
}
.fc-progress-fill {
  height: 100%;
  transition: width 0.25s ease;
}
.btn.is-on { background: var(--bg-3); color: var(--fg); border-color: var(--border-2); }

.fc-center {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 32px 24px;
  gap: 18px;
  overflow-y: auto;
}
.fc-meta {
  display: flex; align-items: center; gap: 6px;
}
.fc-pip { width: 6px; height: 6px; border-radius: 4px; }

.fc-card {
  width: min(680px, 100%);
  height: 380px;
  perspective: 1600px;
  cursor: pointer;
  user-select: none;
}
.fc-card-inner {
  position: relative;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.fc-card.is-flipped .fc-card-inner { transform: rotateY(180deg); }

.fc-face {
  position: absolute; inset: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 36px 44px;
  border: 1px solid var(--border);
  border-radius: var(--r-4);
  background: var(--bg-1);
  box-shadow: 0 1px 0 var(--border), 0 8px 24px -16px rgba(0,0,0,0.18);
  text-align: center;
}
.fc-face:hover { border-color: var(--border-2); }
.fc-back { transform: rotateY(180deg); }

.fc-face-tag {
  position: absolute; top: 14px; left: 16px;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.fc-face-text {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.4;
  color: var(--fg);
  max-width: 540px;
}
.fc-face-hint {
  position: absolute; bottom: 16px;
  font-size: 11px;
}

.fc-controls {
  display: flex; align-items: center; gap: 8px;
}
.fc-nav { width: 32px; padding: 0; }
.fc-mark {
  height: 32px;
  padding: 0 14px;
  font-size: 12.5px;
  font-weight: 500;
}
.fc-mark-known {
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  color: var(--fg);
}
.fc-mark-known:hover { background: var(--ok-bg, rgba(34, 197, 94, 0.08)); border-color: var(--ok); color: var(--ok); }
.fc-mark-review {
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  color: var(--fg);
}
.fc-mark-review:hover { background: rgba(245, 158, 11, 0.08); border-color: var(--warn); color: var(--warn); }

.fc-hint {
  font-size: 11px;
  display: flex; gap: 6px; align-items: center; flex-wrap: wrap;
  justify-content: center;
}
.fc-hint kbd {
  display: inline-block;
  padding: 1px 5px;
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: var(--bg-1);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-2);
  min-width: 16px;
  text-align: center;
}

.fc-done {
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  max-width: 480px;
}
.fc-done-mark {
  width: 64px; height: 64px;
  border-radius: 32px;
  border: 2px solid var(--fg);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  color: var(--fg);
}
.fc-done-title {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.018em;
  margin-bottom: 4px;
}
.fc-done-sub { font-size: 13px; line-height: 1.55; }
.fc-stats {
  display: flex; gap: 20px;
  margin-top: 22px;
  padding: 14px 22px;
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  background: var(--bg-1);
}
.fc-stat { text-align: center; min-width: 64px; }
.fc-stat-num { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }
.fc-stat-lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px; }

@media (max-width: 720px) {
  .fc-card { height: 320px; }
  .fc-face-text { font-size: 18px; }
  .fc-face { padding: 28px 22px; }
  .fc-mark span { display: none; }
}



/* ================ GLOBAL MOTION ================ */

/* Ambient list/grid stagger — children animate in with --i index var.
   Set --i: <number> on each child; container or item provides @keyframes. */
@keyframes lx-rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes lx-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes lx-rise-soft {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Page-level fade-in when route changes */
.main > * {
  animation: lx-rise-soft 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Cards/items get gentle staggered rise — opt-in with .lx-stagger on parent */
.lx-stagger > * {
  animation: lx-rise 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(var(--i, 0) * 24ms);
}

/* Generic press effect on buttons */
.btn { transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease, transform 0.08s ease; }
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn.primary:hover:not(:disabled) { filter: brightness(1.05); }

/* Card hover lift */
.mission-card, .lec-card, .lec-row, .post-card, .quick-tile {
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.18s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.18s ease;
}
.mission-card:hover, .lec-card:hover, .quick-tile:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px -8px rgba(0, 0, 0, 0.35);
  border-color: var(--border-2);
}

/* Smooth focus rings */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
  transition: outline-offset 0.1s ease;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ================ ONBOARDING ================ */

.ob-root {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
  z-index: 100;
  overflow: hidden;
  animation: lx-fade 0.4s ease both;
}

.ob-gradient {
  position: absolute; inset: -20% -20% auto auto;
  width: 80vw; height: 80vh;
  background: radial-gradient(circle at 70% 30%, var(--accent-soft), transparent 60%);
  pointer-events: none;
  filter: blur(40px);
  opacity: 0.6;
}

.ob-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  position: relative; z-index: 2;
}
.ob-brand { display: flex; align-items: center; gap: 8px; }
.ob-mark {
  width: 22px; height: 22px;
  border-radius: 5px;
  background: var(--fg);
  color: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.ob-mark-l { font-size: 13px; font-weight: 600; line-height: 1; }
.ob-brand-name { font-size: 14px; font-weight: 500; letter-spacing: -0.01em; }

.ob-progress { display: flex; gap: 5px; }
.ob-pip {
  width: 22px; height: 3px;
  border-radius: 2px;
  background: var(--bg-3);
  transition: background 0.32s cubic-bezier(0.22, 1, 0.36, 1), width 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}
.ob-pip.on { background: var(--fg); }
.ob-pip.now { width: 38px; }

.ob-skip {
  background: transparent; border: 0;
  color: var(--fg-3);
  font-size: 12.5px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 4px;
  transition: color 0.12s ease, background 0.12s ease;
}
.ob-skip:hover { color: var(--fg); background: var(--bg-2); }

.ob-stage {
  flex: 1;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  position: relative; z-index: 1;
  overflow: hidden;
}

.ob-step {
  width: 100%;
  max-width: 720px;
  max-height: 100%;
  overflow-y: auto;
  padding: 0 4px;
}

.ob-anim-fwd { animation: ob-fwd-in 0.42s cubic-bezier(0.22, 1, 0.36, 1) both; }
.ob-anim-back { animation: ob-back-in 0.42s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes ob-fwd-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes ob-back-in {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.ob-content { padding: 32px 0 16px; }
.ob-eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 10px;
  animation: lx-rise 0.36s 0.06s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ob-eyebrow-opt { color: var(--fg-4); font-weight: 400; letter-spacing: 0.04em; text-transform: none; }

.ob-h1 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.024em;
  line-height: 1.18;
  margin: 0 0 10px;
  color: var(--fg);
  animation: lx-rise 0.42s 0.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ob-sub {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 540px;
  margin: 0;
  animation: lx-rise 0.42s 0.16s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.ob-input-row { animation: lx-rise 0.4s 0.22s cubic-bezier(0.22, 1, 0.36, 1) both; }
.ob-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-3);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ob-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.ob-input:focus { border-color: var(--fg-3); background: var(--bg-2); }
.ob-input::placeholder { color: var(--fg-4); }
.ob-input-lg { font-size: 17px; padding: 14px 16px; }
.ob-hint { font-size: 12px; margin-top: 8px; }

/* Tile grid (year picker etc.) */
.ob-grid { display: grid; gap: 10px; }
.ob-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 540px; }
.ob-tile {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 16px;
  text-align: left;
  cursor: pointer;
  display: flex; flex-direction: column; gap: 4px;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  font-family: inherit;
  color: var(--fg);
  animation: lx-rise 0.36s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(0.22s + var(--i, 0) * 30ms);
}
.ob-tile:hover { background: var(--bg-2); border-color: var(--border-2); transform: translateY(-1px); }
.ob-tile.is-on { background: var(--bg-2); border-color: var(--fg); }
.ob-tile-num { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }
.ob-tile-label { font-size: 12px; color: var(--fg-3); }

/* Subjects step */
.ob-step-subjects { display: flex; flex-direction: column; }
.ob-search {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.15s ease;
}
.ob-search:focus-within { border-color: var(--border-2); }
.ob-search-input {
  flex: 1;
  background: transparent;
  border: 0;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--fg);
  outline: none;
}
.ob-search-input::placeholder { color: var(--fg-4); }
.ob-count { font-size: 11.5px; padding-left: 10px; border-left: 1px solid var(--border); }

.ob-subj-scroll {
  margin-top: 16px;
  max-height: 50vh;
  overflow-y: auto;
  padding: 4px 2px 12px;
  animation: lx-rise 0.4s 0.24s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ob-subj-group { margin-bottom: 18px; }
.ob-subj-grouphead {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 8px;
}
.ob-subj-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.ob-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-1);
  color: var(--fg-2);
  font-family: inherit;
  font-size: 12.5px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease, transform 0.08s ease;
  animation: lx-rise-soft 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(var(--i, 0) * 18ms);
}
.ob-chip:hover { background: var(--bg-2); border-color: var(--border-2); color: var(--fg); }
.ob-chip:active { transform: scale(0.97); }
.ob-chip.is-on {
  background: var(--bg-3);
  color: var(--fg);
  border-color: var(--border-2);
  box-shadow: inset 0 0 0 1px var(--hex, var(--accent));
}
.ob-chip-dot {
  width: 6px; height: 6px;
  border-radius: 4px;
  background: var(--hex, var(--fg-3));
  flex-shrink: 0;
}
.ob-chip-check { color: var(--hex, var(--accent)); }

/* Targets step */
.ob-step-targets { display: flex; flex-direction: column; }
.ob-target-list {
  margin-top: 22px;
  display: flex; flex-direction: column;
  gap: 4px;
  max-height: 56vh;
  overflow-y: auto;
  padding-right: 4px;
}
.ob-target-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-1);
  animation: lx-rise 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(0.18s + var(--i, 0) * 30ms);
  transition: background 0.12s ease, border-color 0.12s ease;
}
.ob-target-row:hover { background: var(--bg-2); border-color: var(--border-2); }
.ob-target-dot { width: 8px; height: 8px; border-radius: 4px; flex-shrink: 0; }
.ob-target-name {
  flex: 1; min-width: 0;
  font-size: 13.5px; color: var(--fg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ob-target-grades { display: flex; gap: 3px; }
.ob-grade {
  width: 30px; height: 28px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg-3);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease, transform 0.08s ease;
}
.ob-grade:hover { background: var(--bg-2); color: var(--fg); border-color: var(--border-2); }
.ob-grade.is-on { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.ob-grade:active { transform: scale(0.92); }

/* Time step */
.ob-step-time { display: flex; flex-direction: column; }
.ob-time-card {
  margin-top: 16px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-1);
  animation: lx-rise 0.4s 0.2s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ob-time-row {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 14px;
  gap: 16px;
}
.ob-time-label { font-size: 14px; font-weight: 500; color: var(--fg); }
.ob-time-sub { font-size: 12px; margin-top: 2px; line-height: 1.4; }
.ob-time-val {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
  white-space: nowrap;
}

.ob-slider {
  width: 100%;
  -webkit-appearance: none; appearance: none;
  height: 4px;
  background: var(--bg-3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.ob-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px;
  border-radius: 8px;
  background: var(--fg);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  transition: transform 0.12s ease;
}
.ob-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.ob-slider::-webkit-slider-thumb:active { transform: scale(1.25); }
.ob-slider::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 8px;
  background: var(--fg);
  cursor: pointer;
  border: 2px solid var(--bg);
}
.ob-slider-sm { height: 3px; }
.ob-slider-sm::-webkit-slider-thumb { width: 13px; height: 13px; border-width: 1.5px; }

.ob-slider-marks {
  display: flex; justify-content: space-between;
  margin-top: 6px;
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
}

.ob-time-toggle { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
.ob-checkbox { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; user-select: none; }
.ob-checkbox input { display: none; }
.ob-check-box {
  width: 16px; height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--border-2);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg);
  color: var(--bg);
  transition: background 0.12s ease, border-color 0.12s ease;
}
.ob-checkbox input:checked + .ob-check-box {
  background: var(--fg);
  border-color: var(--fg);
}
.ob-check-label { font-size: 13px; color: var(--fg); }

.ob-week {
  margin-top: 14px;
  display: flex; flex-direction: column; gap: 6px;
  animation: lx-rise 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.ob-week-row {
  display: grid;
  grid-template-columns: 38px 1fr 60px;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  animation: lx-rise-soft 0.28s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: calc(var(--i, 0) * 28ms);
}
.ob-week-day { font-size: 12px; color: var(--fg-2); font-weight: 500; }
.ob-week-val { font-size: 12px; color: var(--fg); text-align: right; }
.ob-week-total {
  display: flex; justify-content: space-between;
  margin-top: 8px; padding-top: 10px;
  border-top: 1px solid var(--border);
  font-size: 12px;
}

/* Footer nav */
.ob-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-1);
  position: relative; z-index: 2;
}
.ob-nav-sub {
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.ob-welcome { padding-top: 20px; }

@media (max-width: 720px) {
  .ob-h1 { font-size: 26px; }
  .ob-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ob-target-row { padding: 8px 10px; gap: 8px; }
  .ob-grade { width: 26px; height: 26px; font-size: 11.5px; }
  .ob-time-val { font-size: 18px; }
}


/* ================ AUTH FLOW ================ */

.auth-root {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
  z-index: 100;
  overflow: hidden;
  animation: lx-fade 0.4s ease both;
}
.auth-gradient {
  position: absolute; inset: -20% auto auto -20%;
  width: 80vw; height: 80vh;
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), transparent 60%);
  pointer-events: none;
  filter: blur(40px);
  opacity: 0.55;
}
.auth-gradient::after {
  content: '';
  position: absolute; inset: 30% -20% -30% auto;
  width: 70vw; height: 70vh;
  background: radial-gradient(circle at 70% 70%, rgba(167, 139, 250, 0.10), transparent 60%);
  pointer-events: none;
  filter: blur(40px);
}

.auth-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  position: relative; z-index: 2;
}
.auth-brand { display: flex; align-items: center; gap: 8px; }
.auth-mark {
  width: 22px; height: 22px;
  border-radius: 5px;
  background: var(--fg);
  color: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.auth-mark-l { font-size: 13px; font-weight: 600; line-height: 1; }
.auth-brand-name { font-size: 14px; font-weight: 500; letter-spacing: -0.01em; }

.auth-stage {
  flex: 1;
  display: flex; align-items: center; justify-content: center;
  padding: 24px 20px;
  position: relative; z-index: 1;
  overflow-y: auto;
}
.auth-card {
  width: 100%;
  max-width: 380px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-1);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.02) inset,
    0 24px 60px -28px rgba(0,0,0,0.55),
    0 8px 24px -16px rgba(0,0,0,0.4);
  position: relative;
}
:root[data-theme='light'] .auth-card {
  box-shadow:
    0 1px 0 rgba(0,0,0,0.02) inset,
    0 24px 60px -28px rgba(0,0,0,0.18),
    0 8px 24px -16px rgba(0,0,0,0.12);
}
.auth-anim {
  animation: auth-in 0.42s cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes auth-in {
  from { opacity: 0; transform: translateY(10px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-h1 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.018em;
  margin: 0 0 6px;
  color: var(--fg);
  line-height: 1.25;
}
.auth-sub {
  font-size: 13px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 0 0 22px;
}

.auth-backlink {
  display: inline-flex; align-items: center; gap: 5px;
  background: transparent;
  border: 0;
  color: var(--fg-3);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  padding: 0;
  margin-bottom: 14px;
  transition: color 0.12s ease;
}
.auth-backlink:hover { color: var(--fg); }

/* Google button */
.auth-google {
  width: 100%;
  display: flex; align-items: center; justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.08s ease;
}
.auth-google:hover { background: var(--bg-2); border-color: var(--border-strong); }
.auth-google:active { transform: scale(0.99); }

.auth-divider {
  display: flex; align-items: center; gap: 10px;
  margin: 18px 0;
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-field { display: flex; flex-direction: column; gap: 6px; }
.auth-field-row { display: flex; align-items: center; justify-content: space-between; }
.auth-label {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--fg-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.auth-input {
  width: 100%;
  padding: 11px 12px;
  font-size: 13.5px;
  font-family: inherit;
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: 7px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.auth-input:focus { border-color: var(--fg-3); background: var(--bg-2); }
.auth-input::placeholder { color: var(--fg-4); }

.auth-input-wrap { position: relative; }
.auth-input-wrap .auth-input { padding-right: 36px; }
.auth-eye {
  position: absolute; right: 6px; top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: 0;
  color: var(--fg-3);
  cursor: pointer;
  border-radius: 4px;
  transition: color 0.12s ease, background 0.12s ease;
}
.auth-eye:hover { color: var(--fg); background: var(--bg-2); }

.auth-link {
  color: var(--fg);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.12s ease, opacity 0.12s ease;
}
.auth-link:hover { opacity: 0.7; }

.auth-check {
  display: inline-flex; align-items: center; gap: 9px;
  cursor: pointer; user-select: none;
  padding: 2px 0;
}
.auth-check input { display: none; }
.auth-check-box {
  width: 16px; height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--border-2);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg);
  color: var(--bg);
  transition: background 0.12s ease, border-color 0.12s ease;
}
.auth-check input:checked + .auth-check-box {
  background: var(--fg);
  border-color: var(--fg);
}
.auth-check-label { font-size: 12.5px; color: var(--fg-2); }

.auth-err {
  font-size: 12px;
  color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 8px 10px;
  border-radius: 6px;
  animation: lx-rise-soft 0.2s ease both;
}

.auth-submit {
  width: 100%;
  display: flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 11px 14px;
  background: var(--fg);
  color: var(--bg);
  border: 0;
  border-radius: 7px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.12s ease, transform 0.08s ease;
  margin-top: 4px;
  min-height: 38px;
}
.auth-submit:hover:not(:disabled) { opacity: 0.92; }
.auth-submit:active:not(:disabled) { transform: scale(0.99); }
.auth-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.auth-submit-ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-2);
}
.auth-submit-ghost:hover:not(:disabled) { background: var(--bg-2); }

.auth-stack { display: flex; flex-direction: column; gap: 8px; }

.auth-fineprint { font-size: 11.5px; line-height: 1.55; margin-top: 6px; }
.auth-altline {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  text-align: center;
}

.auth-spin {
  width: 14px; height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 8px;
  display: inline-block;
  animation: lx-spin 0.7s linear infinite;
}
@keyframes lx-spin { to { transform: rotate(360deg); } }

/* OTP */
.auth-otp {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin: 8px 0 4px;
}
.auth-otp-cell {
  width: 100%;
  height: 48px;
  text-align: center;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 20px;
  font-weight: 500;
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.12s ease, background 0.12s ease, transform 0.08s ease;
}
.auth-otp-cell:focus {
  border-color: var(--fg);
  background: var(--bg-2);
  transform: scale(1.04);
}
.auth-otp-cell.is-filled { border-color: var(--border-strong); background: var(--bg-2); }

/* Success mark */
.auth-success-mark {
  width: 44px; height: 44px;
  border-radius: 22px;
  background: rgba(16, 185, 129, 0.10);
  border: 1.5px solid rgba(16, 185, 129, 0.4);
  color: var(--ok);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  animation: auth-pop 0.5s cubic-bezier(0.22, 1.4, 0.36, 1) both;
}
@keyframes auth-pop {
  0%   { opacity: 0; transform: scale(0.4); }
  60%  { opacity: 1; transform: scale(1.08); }
  100% { opacity: 1; transform: scale(1); }
}

/* Footer */
.auth-foot {
  padding: 16px 24px 22px;
  text-align: center;
  position: relative; z-index: 2;
}
.auth-foot-text {
  font-size: 11.5px;
  display: inline-flex; gap: 8px;
}
.auth-foot-text .auth-link { font-size: 11.5px; color: var(--fg-3); }
.auth-foot-text .auth-link:hover { color: var(--fg); }
.auth-foot-sep { color: var(--fg-4); }

@media (max-width: 480px) {
  .auth-card { padding: 24px 20px; max-width: 100%; }
  .auth-h1 { font-size: 20px; }
  .auth-otp-cell { height: 44px; font-size: 18px; }
}