/* ============================================================
   OEdu · Teacher — Design System
   Tokens → Shell → Components → Views → Motion → Responsive
   ============================================================ */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{min-height:100vh;font-family:var(--font-ui);color:var(--ink);background:var(--backdrop);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow:hidden}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}
svg{display:block}
/* default sizing for inline icons (components override via their own `... svg` rules) */
.ic{width:1.05em;height:1.05em;flex:none}
:focus-visible{outline:2.5px solid var(--focus);outline-offset:2px;border-radius:8px}
::selection{background:#d9d2ff;color:#17171c}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#d9d9df;border-radius:20px;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#c4c4cc;background-clip:content-box}

/* ---------- Tokens ---------- */
:root{
  --font-display:"Bricolage Grotesque","Inter",system-ui,sans-serif;
  --font-ui:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;

  /* neutrals */
  --ink:#1a1a20;
  --ink-2:#54545f;
  --ink-3:#8a8a97;
  --ink-4:#adadb8;
  --line:#ececf0;
  --line-2:#e3e3e9;
  --surface:#ffffff;
  --surface-2:#f7f7f9;
  --surface-3:#f1f1f4;
  --sidebar:#f6f5f8;
  --backdrop:#e7e7ec;
  --black:#17171c;
  --pill-ink:#ffffff;   /* text/icon that sits on a --black surface */
  --focus:#6b5cd1;

  /* subject / accent tints (bg + ink) */
  --violet:#efecfc;   --violet-ink:#6a5ad6;
  --sky:#e6eefc;      --sky-ink:#4a72d8;
  --blush:#fbe6e2;    --blush-ink:#cc6455;
  --peach:#fceadc;    --peach-ink:#c67c3c;
  --mint:#e2f4ea;     --mint-ink:#369266;
  --butter:#fbf1d6;   --butter-ink:#b0842f;
  --teal:#dcf1f1;     --teal-ink:#2f8f8f;
  --lilac:#f2e8fb;    --lilac-ink:#9257c9;

  --ok:#2fa06a;   --ok-bg:#e4f4ec;
  --warn:#c98a2b; --warn-bg:#fbf0da;
  --danger:#d0574a; --danger-bg:#fbe6e2;

  /* radii */
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:26px; --r-2xl:34px;

  /* shadow */
  --sh-1:0 1px 2px rgba(24,24,32,.05), 0 1px 1px rgba(24,24,32,.03);
  --sh-2:0 4px 14px rgba(24,24,32,.06), 0 1px 3px rgba(24,24,32,.05);
  --sh-3:0 12px 34px rgba(24,24,32,.10), 0 3px 8px rgba(24,24,32,.05);
  --sh-pill:0 1px 2px rgba(24,24,32,.08), 0 4px 12px rgba(24,24,32,.05);
  --sh-panel:0 30px 60px -22px rgba(30,28,52,.28), 0 8px 24px -16px rgba(30,28,52,.2);

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-2:cubic-bezier(.34,1.56,.64,1);
  --tap:180ms var(--ease);
}

/* ============================================================
   Boot / device frame
   ============================================================ */
.app-shell{position:fixed;inset:0}
.boot{position:fixed;inset:0;display:grid;place-items:center;background:var(--backdrop)}
.boot-mark{display:flex;gap:5px;align-items:flex-end;height:34px}
.boot-mark span{width:7px;background:var(--black);border-radius:4px;animation:eq 1s var(--ease) infinite}
.boot-mark span:nth-child(1){height:16px;animation-delay:0s}
.boot-mark span:nth-child(2){height:30px;animation-delay:.15s}
.boot-mark span:nth-child(3){height:16px;animation-delay:.3s}
@keyframes eq{0%,100%{transform:scaleY(.5);opacity:.6}50%{transform:scaleY(1);opacity:1}}

.frame{position:fixed;inset:0;padding:18px;display:flex}
.device{flex:1;display:grid;grid-template-columns:var(--nav-w,258px) 1fr;
  background:var(--surface);border-radius:var(--r-2xl);overflow:hidden;
  box-shadow:var(--sh-panel);min-width:0;transition:grid-template-columns .38s var(--ease)}
.device.nav-collapsed{--nav-w:82px}

/* ============================================================
   Sidebar
   ============================================================ */
.side{background:var(--sidebar);border-right:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0;position:relative;z-index:5}
.side-head{display:flex;align-items:center;justify-content:space-between;
  padding:20px 20px 8px}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--black);color:var(--pill-ink);
  display:grid;place-items:center;flex:none;box-shadow:var(--sh-2)}
.brand-mark svg{width:19px;height:19px}
.brand-text{min-width:0;line-height:1}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:16px;letter-spacing:-.02em}
.brand-sub{font-size:11px;color:var(--ink-3);font-weight:500;margin-top:2px;
  text-transform:uppercase;letter-spacing:.14em}
.nav-collapsed .brand-text,.nav-collapsed .side-label span,
.nav-collapsed .nav-txt,.nav-collapsed .nav-extra,.nav-collapsed .side-foot .who-txt{
  opacity:0;pointer-events:none}
.icon-btn{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  color:var(--ink-3);transition:var(--tap);flex:none}
.icon-btn:hover{background:var(--surface-3);color:var(--ink)}
.icon-btn svg{width:19px;height:19px}

.side-scroll{flex:1;overflow-y:auto;overflow-x:hidden;padding:6px 14px 12px;scrollbar-width:thin}
.side-label{font-size:11px;font-weight:600;color:var(--ink-4);text-transform:uppercase;
  letter-spacing:.13em;padding:16px 12px 8px;white-space:nowrap}
.nav-item{display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:12px;color:var(--ink-2);font-weight:500;font-size:14.5px;position:relative;
  transition:background var(--tap),color var(--tap);white-space:nowrap;width:100%;text-align:left}
.nav-item .nav-ic{width:20px;height:20px;flex:none;color:var(--ink-3);transition:color var(--tap)}
.nav-item .nav-ic svg{width:20px;height:20px}
.nav-item:hover{background:var(--surface-2);color:var(--ink)}
.nav-item:hover .nav-ic{color:var(--ink)}
.nav-item.active{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:var(--sh-1)}
.nav-item.active .nav-ic{color:var(--ink)}
.nav-item.active::before{content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:3px;background:var(--black)}
.nav-txt{flex:1;overflow:hidden;text-overflow:ellipsis}
.nav-extra{flex:none}
.kbd{display:inline-flex;gap:3px}
.kbd b{font-family:var(--font-ui);font-weight:600;font-size:10.5px;color:var(--ink-4);
  background:var(--surface);border:1px solid var(--line-2);border-radius:6px;
  min-width:19px;height:19px;display:grid;place-items:center;padding:0 4px}
.pill-badge{background:var(--black);color:var(--pill-ink);font-size:11px;font-weight:600;
  min-width:20px;height:20px;border-radius:20px;display:grid;place-items:center;padding:0 6px}
.pill-badge[hidden]{display:none}
.nav-collapsed .nav-item{justify-content:center;padding:0}
.nav-collapsed .nav-item.active::before{display:none}

.side-foot{padding:12px 16px 18px;border-top:1px solid var(--line)}
.who{display:flex;align-items:center;gap:11px;padding:8px;border-radius:14px;
  transition:var(--tap);cursor:pointer;text-align:left}
.who:hover{background:var(--surface-2)}
.who-txt{min-width:0;line-height:1.25}
.who-name{font-weight:600;font-size:13.5px;letter-spacing:-.01em;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.who-role{font-size:12px;color:var(--ink-3)}
.avatar{border-radius:50%;flex:none;object-fit:cover;background:var(--surface-3);
  display:grid;place-items:center;font-weight:600;color:var(--ink-2);overflow:hidden}
.avatar.sq{border-radius:12px}
.nav-collapsed .who{justify-content:center;padding:8px 0}

/* ============================================================
   Main column
   ============================================================ */
.main{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--surface)}
.topbar{display:flex;align-items:center;gap:14px;height:66px;padding:0 26px;flex:none;
  border-bottom:1px solid var(--line)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);
  font-weight:500;min-width:0;overflow:hidden}
.crumbs .c-sep{color:var(--ink-4);flex:none}
.crumbs .c-item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.crumbs .c-item svg{width:16px;height:16px}
.crumbs .c-now{color:var(--ink);font-weight:600}
.top-spacer{flex:1}
.top-actions{display:flex;align-items:center;gap:8px}
.top-search{display:flex;align-items:center;gap:9px;height:38px;padding:0 14px;min-width:230px;
  background:var(--surface-2);border:1px solid transparent;border-radius:11px;color:var(--ink-3);
  transition:var(--tap)}
.top-search:focus-within{background:var(--surface);border-color:var(--line-2);box-shadow:var(--sh-1)}
.top-search svg{width:17px;height:17px;flex:none}
.top-search input{flex:1;border:0;background:none;outline:none;font-size:14px;color:var(--ink)}
.top-search input::placeholder{color:var(--ink-4)}
.top-search .kbd{margin-left:auto}
.top-btn{position:relative;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--ink-2);background:var(--surface-2);transition:var(--tap)}
.top-btn:hover{background:var(--surface-3);color:var(--ink)}
.top-btn svg{width:19px;height:19px}
.top-btn .dot{position:absolute;top:9px;right:10px;width:8px;height:8px;border-radius:50%;
  background:var(--danger);border:2px solid var(--surface-2)}

.scroll{flex:1;overflow-y:auto;overflow-x:hidden;scroll-behavior:smooth}
.page{padding:30px 34px 60px;max-width:1320px;margin:0 auto;animation:pageIn .5s var(--ease) both}
.page.wide{max-width:none}
@keyframes pageIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.page-head{margin-bottom:26px}
.page-eyebrow{font-size:12.5px;font-weight:600;color:var(--violet-ink);letter-spacing:.04em;
  margin-bottom:10px;display:flex;align-items:center;gap:8px}
.page-title{font-family:var(--font-display);font-weight:700;font-size:clamp(26px,3.4vw,34px);
  letter-spacing:-.03em;line-height:1.04}
.page-sub{color:var(--ink-3);font-size:15px;margin-top:8px;max-width:62ch;line-height:1.5}

/* ============================================================
   Primitives
   ============================================================ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;
  border-radius:12px;font-weight:600;font-size:14px;transition:var(--tap);white-space:nowrap;
  border:1px solid transparent}
.btn svg{width:17px;height:17px}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--black);color:var(--pill-ink);box-shadow:var(--sh-2)}
.btn-primary:hover{filter:brightness(.92)}
.btn-danger{background:var(--danger);color:#fff;box-shadow:var(--sh-2)}
.btn-danger:hover{filter:brightness(.94)}
.btn-ghost{background:var(--surface);border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--ink-4)}
.btn-soft{background:var(--surface-2);color:var(--ink)}
.btn-soft:hover{background:var(--surface-3)}
.btn-sm{height:36px;padding:0 13px;font-size:13px;border-radius:10px}
.btn-icon{width:42px;padding:0}
.btn-icon.btn-sm{width:36px}

.chip{display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 12px;border-radius:20px;
  font-size:12.5px;font-weight:600;background:var(--surface-2);color:var(--ink-2);white-space:nowrap}
.chip svg{width:14px;height:14px}
.chip.tint{background:var(--tint,var(--surface-2));color:var(--tint-ink,var(--ink-2))}
.chip.dot::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}

.status{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 11px;border-radius:20px;
  font-size:12.5px;font-weight:600}
.status svg{width:14px;height:14px}
.status.ok{background:var(--ok-bg);color:var(--ok)}
.status.warn{background:var(--warn-bg);color:var(--warn)}
.status.danger{background:var(--danger-bg);color:var(--danger)}
.status.neutral{background:var(--surface-3);color:var(--ink-2)}

.count-pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;border-radius:20px;
  font-size:12.5px;font-weight:600;background:var(--surface);color:var(--ink-2);box-shadow:var(--sh-1)}
.count-pill svg{width:14px;height:14px;color:var(--ok)}

.seg{display:inline-flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:2px}
.seg button{height:32px;padding:0 14px;border-radius:9px;font-size:13px;font-weight:600;color:var(--ink-3);
  transition:var(--tap)}
.seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--sh-1)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1)}
.card-pad{padding:22px}
.card-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.card-title{font-family:var(--font-display);font-weight:600;font-size:17px;letter-spacing:-.02em}
.card-sub{font-size:13px;color:var(--ink-3);margin-top:2px}
.card-head .grow{flex:1}

.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:8px;
  font-size:12px;font-weight:600;background:var(--tint,var(--surface-2));color:var(--tint-ink,var(--ink-2))}
.tag .swatch{width:8px;height:8px;border-radius:3px;background:currentColor}

.subj-ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:none;
  background:var(--tint,var(--surface-2));color:var(--tint-ink,var(--ink-2))}
.subj-ic svg{width:18px;height:18px}
.subj-ic.lg{width:44px;height:44px;border-radius:13px}
.subj-ic.lg svg{width:22px;height:22px}

.avatar-stack{display:flex}
.avatar-stack .avatar{border:2.5px solid var(--surface);margin-left:-9px}
.avatar-stack .avatar:first-child{margin-left:0}
.avatar-stack .more{background:var(--surface-3);color:var(--ink-2);font-size:11px;font-weight:600}

.divide{height:1px;background:var(--line);border:0;margin:0}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--ink-4);flex:none}

.empty{display:grid;place-items:center;text-align:center;padding:56px 20px;color:var(--ink-3)}
.empty .e-ic{width:56px;height:56px;border-radius:16px;background:var(--surface-2);display:grid;
  place-items:center;margin-bottom:16px;color:var(--ink-4)}
.empty .e-ic svg{width:26px;height:26px}
.empty h4{font-family:var(--font-display);font-size:17px;color:var(--ink);font-weight:600}
.empty p{font-size:13.5px;margin-top:6px;max-width:34ch}

/* ---------- toolbar / month selector ---------- */
.toolbar{display:flex;align-items:center;gap:14px;margin-bottom:20px;flex-wrap:wrap}
.toolbar .grow{flex:1}
.section-title{font-family:var(--font-display);font-weight:600;font-size:20px;letter-spacing:-.02em}
.month-row{display:flex;align-items:center;gap:9px;min-width:0}
.month-nav{width:38px;height:38px;border-radius:50%;background:var(--surface-2);display:grid;
  place-items:center;color:var(--ink-2);transition:var(--tap);flex:none}
.month-nav:hover{background:var(--surface-3);color:var(--ink)}
.month-nav svg{width:17px;height:17px}
.month-track{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px;scroll-behavior:smooth}
.month-track::-webkit-scrollbar{display:none}
.month-pill{height:40px;padding:0 20px;border-radius:22px;font-weight:600;font-size:14px;
  background:var(--surface-2);color:var(--ink-2);transition:var(--tap);flex:none}
.month-pill:hover{background:var(--surface-3)}
.month-pill.on{background:var(--black);color:var(--pill-ink);box-shadow:var(--sh-2)}

/* ============================================================
   Stat tiles
   ============================================================ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;
  position:relative;overflow:hidden;transition:transform var(--tap),box-shadow var(--tap)}
.stat:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat .s-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.stat .s-ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--tint,var(--surface-2));color:var(--tint-ink,var(--ink-2))}
.stat .s-ic svg{width:20px;height:20px}
.stat .s-val{font-family:var(--font-display);font-weight:700;font-size:32px;letter-spacing:-.03em;
  line-height:1}
.stat .s-label{font-size:13.5px;color:var(--ink-3);margin-top:7px;font-weight:500}
.stat .s-trend{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:600;
  margin-top:12px}
.stat .s-trend svg{width:14px;height:14px}
.s-trend.up{color:var(--ok)} .s-trend.down{color:var(--danger)}
.s-trend .muted{color:var(--ink-3);font-weight:500}

/* ============================================================
   Exam / class cards
   ============================================================ */
.cal-rows{display:flex;flex-direction:column}
.cal-row{display:grid;grid-template-columns:36px 1fr;gap:22px;padding:20px 0;
  border-top:1px solid var(--line)}
.cal-row:first-child{border-top:0}
.cal-idx{font-family:var(--font-mono);font-size:14px;font-weight:600;color:var(--ink-4);
  padding-top:6px;text-align:center}
.cal-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:16px}
.cal-empty{display:flex;align-items:center;color:var(--ink-4);font-size:14px;font-weight:500;
  padding-top:8px}

.xcard{background:var(--tint,var(--surface-2));border-radius:var(--r-md);padding:14px;
  transition:transform var(--tap),box-shadow var(--tap);cursor:pointer;position:relative}
.xcard:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.xcard .x-top{display:flex;align-items:center;gap:11px;margin-bottom:12px}
.room-badge{width:44px;height:40px;border-radius:11px;background:rgba(255,255,255,.72);
  display:grid;place-items:center;font-family:var(--font-mono);font-weight:600;font-size:14px;
  color:var(--ink);flex:none}
.xcard .x-cls{min-width:0;line-height:1.25}
.xcard .x-cls b{display:block;font-weight:600;font-size:14.5px;letter-spacing:-.01em}
.xcard .x-cls span{display:block;font-size:12px;color:var(--ink-2);opacity:.72;font-family:var(--font-mono);margin-top:1px}
.x-inner{background:rgba(255,255,255,.68);border-radius:12px;padding:11px 12px;display:flex;
  align-items:center;gap:11px;margin-bottom:12px}
.x-inner .x-i-ic{width:34px;height:34px;border-radius:9px;background:#fff;display:grid;
  place-items:center;color:var(--tint-ink);flex:none;box-shadow:var(--sh-1)}
.x-inner .x-i-ic svg{width:17px;height:17px}
.x-inner .x-i-txt{min-width:0;line-height:1.25}
.x-inner .x-i-txt b{font-weight:600;font-size:14px}
.x-inner .x-i-txt span{display:block;font-size:12px;color:var(--ink-2);opacity:.7}
.xcard .x-foot{display:flex;align-items:center;gap:8px}
.xcard .x-foot .grow{flex:1}
.mini-menu{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;color:var(--ink-2);
  transition:var(--tap)}
.mini-menu:hover{background:rgba(255,255,255,.6)}
.mini-menu svg{width:16px;height:16px}

/* ============================================================
   Activity feed / event chips
   ============================================================ */
.activity-wrap{display:grid;grid-template-columns:1fr;gap:0}
.act-row{display:grid;grid-template-columns:34px 1fr;gap:20px;padding:16px 0;
  border-top:1px solid var(--line);align-items:start}
.act-row:first-child{border-top:0}
.act-day{width:34px;height:34px;border-radius:11px;background:var(--surface-2);display:grid;
  place-items:center;font-weight:600;font-size:14px;color:var(--ink-2)}
.act-day.on{background:var(--black);color:var(--pill-ink)}
.act-chips{display:flex;flex-wrap:wrap;gap:11px;padding-top:2px}
.event-chip{display:flex;align-items:center;gap:10px;height:48px;padding:7px 15px 7px 8px;
  border-radius:14px;background:var(--tint,var(--surface-2));transition:transform var(--tap)}
.event-chip:hover{transform:translateY(-2px)}
.event-chip .ec-ic{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.7);
  display:grid;place-items:center;color:var(--tint-ink,var(--ink-2));flex:none}
.event-chip .ec-ic svg{width:17px;height:17px}
.event-chip .ec-txt{line-height:1.25}
.event-chip .ec-txt b{font-weight:600;font-size:13.5px;letter-spacing:-.01em}
.event-chip .ec-txt span{display:block;font-size:11.5px;color:var(--ink-2);opacity:.72;
  font-family:var(--font-mono)}
.act-weekend{color:var(--ink-4);font-size:13.5px;font-weight:500;padding-top:9px;font-style:italic}

/* ============================================================
   Right rail
   ============================================================ */
.with-rail{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
.rail{display:flex;flex-direction:column;gap:20px;position:sticky;top:0}

/* mini calendar */
.minical .mc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.minical .mc-title{font-family:var(--font-display);font-weight:600;font-size:16px}
.mc-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;text-align:center}
.mc-grid .mc-w{font-size:11px;color:var(--ink-4);font-weight:600;padding-bottom:6px}
.mc-cell{aspect-ratio:1;display:grid;place-items:center;font-size:12.5px;font-weight:500;
  color:var(--ink-2);border-radius:9px;position:relative;cursor:pointer;transition:var(--tap)}
.mc-cell:hover{background:var(--surface-2)}
.mc-cell.muted{color:var(--ink-4)}
.mc-cell.today{background:var(--black);color:var(--pill-ink);font-weight:600}
.mc-cell .mc-mark{position:absolute;bottom:4px;left:50%;transform:translateX(-50%);display:flex;gap:2px}
.mc-cell .mc-mark i{width:4px;height:4px;border-radius:50%}
.mc-legend{display:flex;gap:14px;margin-top:16px;flex-wrap:wrap}
.mc-legend span{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-3);
  font-weight:500}
.mc-legend i{width:8px;height:8px;border-radius:50%}

.up-item{display:flex;gap:13px;padding:14px;border-radius:var(--r-md);background:var(--tint,var(--surface-2));
  align-items:flex-start;transition:transform var(--tap)}
.up-item:hover{transform:translateY(-2px)}
.up-item + .up-item{margin-top:12px}
.up-item .u-ic{width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.72);display:grid;
  place-items:center;color:var(--tint-ink,var(--ink-2));flex:none}
.up-item .u-ic svg{width:19px;height:19px}
.up-item .u-body{flex:1;min-width:0}
.up-item .u-title{font-weight:600;font-size:14px;letter-spacing:-.01em}
.up-item .u-meta{font-size:12px;color:var(--ink-2);opacity:.75;margin-top:3px;font-family:var(--font-mono)}
.up-item .u-left{font-size:11px;font-weight:600;background:rgba(255,255,255,.7);color:var(--ink);
  padding:4px 9px;border-radius:20px;white-space:nowrap;flex:none}

/* ============================================================
   Tables / lists
   ============================================================ */
.tbl{width:100%;border-collapse:separate;border-spacing:0}
.tbl th{text-align:left;font-size:12px;font-weight:600;color:var(--ink-3);text-transform:uppercase;
  letter-spacing:.06em;padding:0 16px 12px}
.tbl td{padding:14px 16px;border-top:1px solid var(--line);font-size:14px;vertical-align:middle}
.tbl tr{transition:background var(--tap)}
.tbl tbody tr:hover td{background:var(--surface-2)}
.u-cell{display:flex;align-items:center;gap:12px}
.u-cell b{display:block;font-weight:600;line-height:1.25}
.u-cell span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:1px}
.progress{height:7px;border-radius:20px;background:var(--surface-3);overflow:hidden;min-width:64px}
.progress i{display:block;height:100%;border-radius:20px;background:var(--tint-ink,var(--black));
  transition:width .6s var(--ease)}

.list-row{display:flex;align-items:center;gap:14px;padding:15px 16px;border-radius:var(--r-md);
  transition:var(--tap);cursor:pointer}
.list-row:hover{background:var(--surface-2)}
.list-row + .list-row{border-top:1px solid var(--line)}
.list-row .lr-grow{flex:1;min-width:0}

/* ============================================================
   Schedule grid
   ============================================================ */
.sched{display:grid;grid-template-columns:64px repeat(5,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.sched .sc-cell{background:var(--surface);min-height:64px;padding:6px}
.sched .sc-head{background:var(--surface-2);padding:14px 10px;text-align:center;font-weight:600;
  font-size:13.5px}
.sched .sc-head span{display:block;font-size:11.5px;color:var(--ink-3);font-weight:500;margin-top:2px;
  font-family:var(--font-mono)}
.sched .sc-time{background:var(--surface-2);display:grid;place-items:center;font-family:var(--font-mono);
  font-size:11.5px;color:var(--ink-3);font-weight:500}
/* today column (Fantastical/Saturn-style highlight) */
.sched .sc-head.today{background:var(--violet);color:var(--violet-ink)}
.sched .sc-head.today span{color:var(--violet-ink);opacity:.85}
.sc-today-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--violet-ink);
  margin-right:6px;vertical-align:middle}
.sched .sc-cell.today{background:color-mix(in srgb,var(--violet-ink) 6%,var(--surface))}
.sc-block{background:var(--tint,var(--surface-2));border-radius:11px;padding:9px 11px;height:100%;
  cursor:pointer;transition:transform var(--tap),box-shadow var(--tap);border-left:3px solid var(--tint-ink)}
.sc-block:hover{transform:scale(1.02);box-shadow:var(--sh-2)}
.sc-block b{font-weight:600;font-size:12.5px;letter-spacing:-.01em;display:block;color:var(--ink)}
.sc-block span{font-size:11px;color:var(--ink-2);opacity:.8;font-family:var(--font-mono)}
.sc-block .sc-room{margin-top:5px;font-size:10.5px;color:var(--tint-ink);font-weight:600}

/* ============================================================
   Charts (SVG)
   ============================================================ */
.chart-legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:14px}
.chart-legend span{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-3);
  font-weight:500}
.chart-legend i{width:10px;height:10px;border-radius:4px}
.bars{display:flex;align-items:flex-end;gap:10px;height:180px}
.bars .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:9px;height:100%;
  justify-content:flex-end}
.bars .bar{width:100%;max-width:34px;border-radius:8px 8px 4px 4px;background:var(--tint-ink);
  transition:height .7s var(--ease);position:relative}
.bars .bar-lbl{font-size:11.5px;color:var(--ink-3);font-weight:500}
.donut-wrap{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.donut{position:relative;width:150px;height:150px;flex:none}
.donut .d-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;line-height:1.05;gap:2px}
.donut .d-center b{font-family:var(--font-display);font-size:24px;font-weight:700;letter-spacing:-.02em}
.donut .d-center span{font-size:11px;color:var(--ink-3);display:block}

/* ============================================================
   Messages
   ============================================================ */
.msg-layout{display:grid;grid-template-columns:320px 1fr;gap:0;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;height:calc(100vh - 240px);min-height:480px;
  background:var(--surface)}
.msg-list{border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.msg-list-head{padding:16px;border-bottom:1px solid var(--line)}
.msg-scroll{flex:1;overflow-y:auto}
.msg-item{display:flex;gap:12px;padding:14px 16px;cursor:pointer;transition:var(--tap);
  border-bottom:1px solid var(--line);position:relative}
.msg-item:hover{background:var(--surface-2)}
.msg-item.on{background:var(--surface-2)}
.msg-item.on::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--black)}
.msg-item .mi-body{flex:1;min-width:0}
.msg-item .mi-top{display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.msg-item .mi-name{font-weight:600;font-size:14px}
.msg-item .mi-time{font-size:11.5px;color:var(--ink-4);flex:none;font-family:var(--font-mono)}
.msg-item .mi-prev{font-size:13px;color:var(--ink-3);margin-top:3px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.msg-item .mi-unread{width:9px;height:9px;border-radius:50%;background:var(--violet-ink);flex:none;
  align-self:center}
.msg-thread{display:flex;flex-direction:column;min-height:0}
.msg-thread-head{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.msg-body{flex:1;overflow-y:auto;padding:22px;display:flex;flex-direction:column;gap:14px;
  background:var(--surface-2)}
.bubble{max-width:70%;padding:12px 15px;border-radius:16px;font-size:14px;line-height:1.45;
  box-shadow:var(--sh-1)}
.bubble.them{background:var(--surface);border-bottom-left-radius:5px;align-self:flex-start}
.bubble.me{background:var(--black);color:var(--pill-ink);border-bottom-right-radius:5px;align-self:flex-end}
.bubble .b-time{font-size:10.5px;opacity:.5;margin-top:5px;font-family:var(--font-mono)}
.msg-compose{display:flex;align-items:center;gap:10px;padding:14px 18px;border-top:1px solid var(--line)}
.msg-compose input{flex:1;height:44px;border:1px solid var(--line-2);border-radius:14px;padding:0 16px;
  background:var(--surface-2);outline:none;font-size:14px}
.msg-compose input:focus{background:var(--surface);border-color:var(--focus)}

/* ============================================================
   Attendance grid
   ============================================================ */
.att-roster{display:flex;flex-direction:column}
.att-row{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:13px 14px;
  border-top:1px solid var(--line);border-radius:12px;transition:var(--tap)}
.att-row:first-child{border-top:0}
.att-row:hover{background:var(--surface-2)}
.att-toggle{display:inline-flex;background:var(--surface-2);border-radius:11px;padding:3px;gap:2px}
.att-toggle button{width:38px;height:34px;border-radius:8px;display:grid;place-items:center;color:var(--ink-3);
  transition:var(--tap)}
.att-toggle button svg{width:17px;height:17px}
.att-toggle button.on.present{background:var(--ok-bg);color:var(--ok)}
.att-toggle button.on.late{background:var(--warn-bg);color:var(--warn)}
.att-toggle button.on.absent{background:var(--danger-bg);color:var(--danger)}
.att-week{display:flex;gap:5px}
.att-week i{width:12px;height:26px;border-radius:4px;background:var(--surface-3)}
.att-week i.p{background:var(--ok)} .att-week i.a{background:var(--danger)} .att-week i.l{background:var(--warn)}

/* ============================================================
   Toast + menus + modal
   ============================================================ */
.toast-layer{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:200;
  display:flex;flex-direction:column;gap:10px;align-items:center;pointer-events:none}
.toast{display:flex;align-items:center;gap:11px;background:var(--black);color:var(--pill-ink);padding:12px 18px;
  border-radius:14px;font-size:14px;font-weight:500;box-shadow:var(--sh-3);
  animation:toastIn .4s var(--ease-2) both;pointer-events:auto}
.toast svg{width:18px;height:18px;color:#8fe3b6}
@keyframes toastIn{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}
.toast.out{animation:toastOut .3s var(--ease) forwards}
@keyframes toastOut{to{opacity:0;transform:translateY(10px) scale(.97)}}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stack{display:flex;flex-direction:column;gap:20px}
.row{display:flex;align-items:center;gap:12px}
.wrap{flex-wrap:wrap}
.grow{flex:1}
.mono{font-family:var(--font-mono)}
.muted{color:var(--ink-3)}
.tnum{font-variant-numeric:tabular-nums}

/* hero (overview) */
.hero{background:linear-gradient(135deg,var(--violet) 0%,var(--sky) 55%,var(--mint) 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);padding:28px 30px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,102,214,.14),transparent 70%);pointer-events:none}
.hero-greet{font-family:var(--font-display);font-weight:700;font-size:clamp(24px,3vw,32px);
  letter-spacing:-.03em;line-height:1.05}
.hero-sub{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:52ch;line-height:1.5}
.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}

.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:var(--line-2)}
.tl-item{position:relative;padding:0 0 20px}
.tl-item:last-child{padding-bottom:0}
.tl-item .tl-dot{position:absolute;left:-24px;top:5px;width:12px;height:12px;border-radius:50%;
  background:var(--surface);border:2.5px solid var(--tint-ink,var(--ink-4))}
.tl-item.now .tl-dot{background:var(--tint-ink);box-shadow:0 0 0 4px var(--tint)}
.tl-time{font-family:var(--font-mono);font-size:12px;color:var(--ink-3);font-weight:500}
.tl-card{background:var(--surface-2);border-radius:14px;padding:13px 15px;margin-top:6px;display:flex;
  align-items:center;gap:12px;transition:var(--tap);cursor:pointer}
.tl-card:hover{background:var(--surface-3)}
.tl-item.now .tl-card{background:var(--tint);}

/* news cards */
.news-card{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface);
  transition:transform var(--tap),box-shadow var(--tap);cursor:pointer;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.news-cover{height:140px;background:var(--tint,var(--surface-2));position:relative;display:grid;
  place-items:center;color:var(--tint-ink)}
.news-cover svg{width:40px;height:40px;opacity:.5}
.news-body{padding:18px}
.news-body h4{font-family:var(--font-display);font-weight:600;font-size:16px;letter-spacing:-.01em;
  line-height:1.3}
.news-body p{font-size:13.5px;color:var(--ink-3);margin-top:8px;line-height:1.5}
.news-meta{display:flex;align-items:center;gap:9px;margin-top:14px;font-size:12px;color:var(--ink-4);
  font-weight:500}

/* generic feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;
  transition:transform var(--tap),box-shadow var(--tap);cursor:pointer}
.feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.feature .f-ic{width:44px;height:44px;border-radius:13px;background:var(--tint,var(--surface-2));
  color:var(--tint-ink,var(--ink-2));display:grid;place-items:center;margin-bottom:14px}
.feature .f-ic svg{width:22px;height:22px}
.feature h4{font-family:var(--font-display);font-weight:600;font-size:16px;letter-spacing:-.01em}
.feature p{font-size:13px;color:var(--ink-3);margin-top:6px;line-height:1.45}

/* section spacing helper */
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}

/* ============================================================
   Motion prefs + responsive
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* mobile nav */
.nav-toggle{display:none}
.scrim{display:none}

@media (max-width:1180px){
  .with-rail{grid-template-columns:1fr}
  .rail{position:static;flex-direction:row;flex-wrap:wrap}
  .rail>*{flex:1;min-width:280px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .frame{padding:0}
  .device{border-radius:0}
  .device{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;bottom:0;width:280px;z-index:60;
    transform:translateX(-100%);transition:transform .34s var(--ease);box-shadow:var(--sh-3)}
  .device.nav-open .side{transform:none}
  .device.nav-collapsed{--nav-w:1fr}
  .nav-collapsed .brand-text,.nav-collapsed .nav-txt,.nav-collapsed .side-label span,
  .nav-collapsed .nav-extra,.nav-collapsed .who-txt{opacity:1}
  .nav-toggle{display:grid}
  .scrim{display:block;position:fixed;inset:0;background:rgba(20,20,28,.4);z-index:55;opacity:0;
    pointer-events:none;transition:opacity .3s}
  .device.nav-open .scrim{opacity:1;pointer-events:auto}
  .msg-layout{grid-template-columns:1fr}
  .msg-list{display:none}
}
@media (max-width:640px){
  .page{padding:20px 16px 48px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .top-search{display:none}
  .topbar{padding:0 16px;gap:8px}
  .sched{font-size:11px}
  .cal-cards{grid-template-columns:1fr}
  /* page header: title first, actions wrap below full-width */
  .page-head>.row{flex-wrap:wrap}
  .page-head>.row>.grow{flex:1 1 100%}
  .page-head>.row>.row{flex:1 1 100%;margin-top:16px}
  .page-head>.row>.row .btn{flex:1}
  .page-title{font-size:26px}
  .seg{width:100%}.seg button{flex:1}
  .toolbar{gap:10px}
  .month-pill{height:36px;padding:0 15px;font-size:13px}
  .modal{max-height:92vh}
  .fld.half{grid-column:span 2}
  .grade-row{grid-template-columns:1fr auto}
}

/* ============================================================
   Modal / forms
   ============================================================ */
.modal-layer{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:20px}
.modal-scrim{position:absolute;inset:0;background:rgba(18,18,26,.46);backdrop-filter:blur(3px);
  opacity:0;transition:opacity .22s var(--ease)}
.modal-layer.in .modal-scrim{opacity:1}
.modal{position:relative;background:var(--surface);border-radius:var(--r-xl);width:min(520px,100%);
  max-height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--sh-3);border:1px solid var(--line);
  transform:translateY(12px) scale(.98);opacity:0;transition:transform .26s var(--ease-2),opacity .2s var(--ease)}
.modal.wide{width:min(760px,100%)}
.modal-layer.in .modal{transform:none;opacity:1}
.modal-head{display:flex;align-items:flex-start;gap:14px;padding:22px 22px 14px}
.modal-title{font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:-.02em}
.modal-sub{font-size:13.5px;color:var(--ink-3);margin-top:4px}
.modal-head .grow{flex:1}
.modal-x{margin-left:auto}
.modal-body{padding:6px 22px 8px;overflow-y:auto;flex:1 1 auto;min-height:0}
.modal-msg{font-size:14.5px;color:var(--ink-2);line-height:1.55;padding:4px 0 10px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px 22px;
  border-top:1px solid var(--line);margin-top:10px}
.modal-foot .btn{min-width:96px}

.fld-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 16px}
.fld{display:flex;flex-direction:column;gap:7px;grid-column:span 2}
.fld.half{grid-column:span 1}
.fld-label{font-size:12.5px;font-weight:600;color:var(--ink-2)}
.fld-label .req{color:var(--danger)}
.fld-input{height:44px;padding:0 14px;border:1px solid var(--line-2);border-radius:12px;background:var(--surface-2);
  outline:none;font-size:14.5px;color:var(--ink);transition:var(--tap);width:100%}
.fld-input:focus{background:var(--surface);border-color:var(--focus);box-shadow:0 0 0 3px color-mix(in srgb,var(--focus) 18%,transparent)}
textarea.fld-input{height:auto;padding:11px 14px;resize:vertical;line-height:1.5;font-family:inherit}
select.fld-input{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238a8a97' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9.5l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:38px}
.fld-hint{font-size:12px;color:var(--ink-4)}

/* grading panel */
.grade-list{display:flex;flex-direction:column;gap:2px}
.grade-row{display:grid;grid-template-columns:1fr 130px 88px;gap:14px;align-items:center;padding:11px 4px;
  border-top:1px solid var(--line)}
.grade-row:first-child{border-top:0}
.grade-row .g-in{height:40px;width:100%;text-align:center;border:1px solid var(--line-2);border-radius:10px;
  background:var(--surface-2);outline:none;font-weight:600;font-family:var(--font-mono);transition:var(--tap)}
.grade-row .g-in:focus{background:var(--surface);border-color:var(--focus)}
.grade-row .g-band{font-weight:700;font-family:var(--font-display);text-align:center;font-size:15px}
.grade-summary{display:flex;gap:10px;align-items:center;padding:12px 0 4px}

/* action sheet */
.sheet-item{display:flex;align-items:center;gap:12px;width:100%;height:48px;padding:0 14px;border-radius:12px;
  background:var(--surface-2);color:var(--ink);font-weight:500;font-size:14.5px;transition:var(--tap);text-align:left}
.sheet-item:hover{background:var(--surface-3)}
.sheet-item svg{width:18px;height:18px;color:var(--ink-3)}
.sheet-item.danger{color:var(--danger)}
.sheet-item.danger svg{color:var(--danger)}

/* settings switch */
.switch{width:46px;height:28px;border-radius:20px;background:var(--surface-3);position:relative;
  transition:var(--tap);flex:none;cursor:pointer}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;
  background:var(--surface);box-shadow:var(--sh-1);transition:var(--tap)}
.switch.on{background:var(--ok)}
.switch.on::after{left:21px}

/* ============================================================
   Dark theme (toggled via [data-theme="dark"] on <html>)
   ============================================================ */
:root[data-theme="dark"]{
  --ink:#ececef; --ink-2:#b4b4bf; --ink-3:#8b8b98; --ink-4:#63636f;
  --line:#2a2a31; --line-2:#353540;
  --surface:#1c1c21; --surface-2:#24242b; --surface-3:#2d2d35;
  --sidebar:#161619; --backdrop:#0d0d10;
  --black:#f0f0f3; --pill-ink:#17171c;
  --focus:#9384ee;

  --violet-ink:#a99bf2; --sky-ink:#7fa3ef; --blush-ink:#e88f80; --peach-ink:#e0a163;
  --mint-ink:#63c793; --butter-ink:#d8b25a; --teal-ink:#5fc0c0; --lilac-ink:#c390ea;
  --violet:color-mix(in srgb,var(--violet-ink) 15%,var(--surface));
  --sky:color-mix(in srgb,var(--sky-ink) 15%,var(--surface));
  --blush:color-mix(in srgb,var(--blush-ink) 15%,var(--surface));
  --peach:color-mix(in srgb,var(--peach-ink) 15%,var(--surface));
  --mint:color-mix(in srgb,var(--mint-ink) 15%,var(--surface));
  --butter:color-mix(in srgb,var(--butter-ink) 15%,var(--surface));
  --teal:color-mix(in srgb,var(--teal-ink) 15%,var(--surface));
  --lilac:color-mix(in srgb,var(--lilac-ink) 15%,var(--surface));

  --ok:#57c98d; --ok-bg:color-mix(in srgb,#57c98d 15%,var(--surface));
  --warn:#e2b45c; --warn-bg:color-mix(in srgb,#e2b45c 15%,var(--surface));
  --danger:#e8867a; --danger-bg:color-mix(in srgb,#e8867a 15%,var(--surface));

  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 4px 14px rgba(0,0,0,.4);
  --sh-3:0 14px 40px rgba(0,0,0,.5);
  --sh-panel:0 30px 70px -20px rgba(0,0,0,.7);
}
:root[data-theme="dark"] .room-badge,
:root[data-theme="dark"] .x-inner,
:root[data-theme="dark"] .x-inner .x-i-ic,
:root[data-theme="dark"] .event-chip .ec-ic,
:root[data-theme="dark"] .up-item .u-ic,
:root[data-theme="dark"] .mc-cell:hover,
:root[data-theme="dark"] .chip[style*="rgba(255"]{background:rgba(255,255,255,.08)!important}
:root[data-theme="dark"] ::selection{background:#4a3f8a;color:#fff}
:root[data-theme="dark"] ::-webkit-scrollbar-thumb{background:#3a3a44;background-clip:content-box}

/* ============================================================
   Session model — Today / session workspace / two laws
   ============================================================ */
/* Today: session timeline */
.sess-list{display:flex;flex-direction:column;gap:10px}
.sess-card{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--surface);
  border:1px solid var(--line);border-left:3px solid var(--tint-ink);border-radius:var(--r-lg);padding:14px 16px;
  transition:transform var(--tap),box-shadow var(--tap);cursor:pointer}
.sess-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.sess-card.now{background:var(--tint);border-color:transparent;box-shadow:var(--sh-2)}
.sess-card.is-done{opacity:.66}
.sess-card.is-done:hover{opacity:1}
.sc-time-col{width:56px;flex:none;text-align:center}
.sc-time-col b{font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--ink-2)}
.sess-main{flex:1;display:flex;align-items:center;gap:14px;min-width:0}
.sess-title{font-weight:600;font-size:15px;letter-spacing:-.01em}
.sess-meta{font-size:12.5px;margin-top:2px}
.sess-go{color:var(--ink-4);display:flex}.sess-go svg{width:18px;height:18px}
.free-slot{display:flex;align-items:center;gap:14px;padding:6px 16px;opacity:.7}
.free-body{font-size:13px;color:var(--ink-4);font-style:italic;padding-left:0}

/* Needs you (time-based disclosure) */
.needs{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px;box-shadow:var(--sh-1)}
.needs-head{display:flex;align-items:center;gap:9px;font-weight:600;font-size:13px;color:var(--ink-2);margin-bottom:12px}
.needs-dot{width:8px;height:8px;border-radius:50%;background:var(--violet-ink);box-shadow:0 0 0 0 color-mix(in srgb,var(--violet-ink) 60%,transparent);animation:pulse 2s var(--ease) infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--violet-ink) 55%,transparent)}70%{box-shadow:0 0 0 7px transparent}100%{box-shadow:0 0 0 0 transparent}}
.needs-list{display:flex;flex-direction:column;gap:8px}
.needs-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--tint);
  border-radius:var(--r-md);padding:11px 13px;transition:transform var(--tap);cursor:pointer}
.needs-item:hover{transform:translateX(2px)}
.needs-item .ni-ic{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.7);display:grid;place-items:center;color:var(--tint-ink);flex:none}
.needs-item .ni-ic svg{width:18px;height:18px}
.needs-item b{font-weight:600;font-size:14px}
.needs-item span{display:block;font-size:12.5px}

/* Session workspace */
.back-link{display:inline-flex;align-items:center;gap:5px;height:34px;padding:0 12px 0 8px;border-radius:10px;
  color:var(--ink-2);font-weight:600;font-size:13.5px;margin-bottom:16px;transition:var(--tap)}
.back-link:hover{background:var(--surface-2);color:var(--ink)}
.back-link svg{width:17px;height:17px}
.session-hero{background:var(--tint);border-radius:var(--r-xl);padding:26px 28px;margin-bottom:22px}
.session-title{font-family:var(--font-display);font-weight:700;font-size:clamp(24px,3vw,30px);letter-spacing:-.03em;margin-top:8px;line-height:1.05}
.session-sub{color:var(--ink-2);font-size:14.5px;margin-top:7px;font-weight:500}
.primary-action{height:48px;padding:0 24px;font-size:15px;border-radius:14px}
.hero-att-summary{font-size:13px;align-self:center}
.attach-card{cursor:default}

/* Close-the-Loop consequence card — the emotional core */
.conseq-wrap:not(:empty){margin-bottom:22px;display:flex;flex-direction:column;gap:12px}
.consequence{display:flex;align-items:center;gap:14px;background:var(--tint);border-radius:var(--r-lg);
  padding:16px 18px;box-shadow:var(--sh-2);position:relative;overflow:hidden;
  animation:cqIn .45s var(--ease-2) both}
.consequence::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--tint-ink)}
@keyframes cqIn{from{opacity:0;transform:translateY(-8px) scale(.99)}to{opacity:1;transform:none}}
.consequence b{font-weight:600;font-size:14.5px;letter-spacing:-.01em}
.cq-spark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.7);display:grid;place-items:center;color:var(--tint-ink);flex:none}
.cq-spark svg{width:18px;height:18px}
.consequence .btn-primary{flex:none}

/* Library */
.lib-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}

@media (max-width:640px){
  .consequence{flex-wrap:wrap}
  .consequence .btn-primary{width:100%}
  .session-hero{padding:20px}
  .sc-time-col{width:46px}
}

/* ============================================================
   v2 — auth, guardian, AI service UI, admin, gradebook
   ============================================================ */
/* ---- Login (OEdu Identity) ---- */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(120% 90% at 50% -10%, color-mix(in srgb,var(--violet) 55%, var(--surface)) 0%, var(--surface-2) 60%)}
.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:32px;box-shadow:var(--sh-2)}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.auth-brand .brand-mark{width:40px;height:40px}
.auth-brand b{font-family:var(--font-display);font-size:18px;letter-spacing:-.02em;display:block;line-height:1}
.auth-brand span{font-size:11px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.14em}
.auth-title{font-family:var(--font-display);font-size:26px;letter-spacing:-.03em;margin-bottom:4px}
.auth-lede{color:var(--ink-3);font-size:14.5px;margin-bottom:22px}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-form .fld{display:flex;flex-direction:column;gap:6px}
.auth-error{background:color-mix(in srgb,var(--blush) 60%,transparent);color:var(--blush-ink);
  border-radius:10px;padding:9px 12px;font-size:13px;font-weight:500}
.auth-submit{height:46px;justify-content:center;margin-top:4px}
.auth-sep{display:flex;align-items:center;gap:12px;color:var(--ink-4);font-size:12px;margin:22px 0 16px}
.auth-sep::before,.auth-sep::after{content:"";height:1px;background:var(--line);flex:1}
.auth-demos{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.auth-demo{display:flex;flex-direction:column;align-items:flex-start;gap:3px;padding:12px;border:1px solid var(--line);
  border-radius:var(--r-md);background:var(--surface);transition:var(--tap);text-align:left}
.auth-demo:hover{border-color:var(--violet-ink);transform:translateY(-2px);box-shadow:var(--sh-1)}
.auth-demo svg{width:18px;height:18px;color:var(--violet-ink)}
.auth-demo b{font-size:13.5px}
.auth-demo span{font-size:11px;color:var(--ink-4)}
.auth-foot{display:flex;align-items:center;gap:6px;justify-content:center;margin-top:22px;
  color:var(--ink-4);font-size:11.5px}.auth-foot svg{width:13px;height:13px}.auth-foot b{color:var(--ink-3)}

/* ---- Guardian (Family) shell ---- */
.guardian-device{display:flex;flex-direction:column;height:100vh;background:var(--surface-2)}
.g-topbar{display:flex;align-items:center;gap:16px;padding:0 22px;height:64px;background:var(--surface);border-bottom:1px solid var(--line);flex:none}
.g-user{display:flex;align-items:center;gap:10px;font-size:13.5px;font-weight:600}
.g-scroll{flex:1;overflow-y:auto;padding:32px;max-width:960px;width:100%;margin:0 auto}
.g-kids{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.g-kid{text-align:left;cursor:pointer;padding:20px;border-left:4px solid var(--tint-ink);transition:transform var(--tap),box-shadow var(--tap)}
.g-kid:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.g-kid-top{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.g-kid-name{font-weight:700;font-size:17px;letter-spacing:-.01em}
.g-grade{text-align:right;line-height:1}.g-grade b{font-family:var(--font-display);font-size:26px;color:var(--tint-ink)}
.g-grade span{display:block;font-size:11px;color:var(--ink-3);margin-top:2px}
.g-grade.lg b{font-size:40px}
.g-kid-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:14px 0;border-top:1px solid var(--line)}
.g-kid-stats>div{display:flex;flex-direction:column;gap:2px}.g-kid-stats span{font-size:11px}.g-kid-stats b{font-size:16px;font-family:var(--font-mono)}
.g-kid-cta{display:flex;align-items:center;gap:6px;justify-content:flex-end;color:var(--tint-ink);font-size:12.5px;font-weight:600}
.g-kid-cta svg{width:15px;height:15px}
.gb-cat-row{display:flex;align-items:center;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}
.gb-cat-row:last-child{border-bottom:0}
.g-note{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.g-note:last-child{border-bottom:0}
.g-note-ic{width:34px;height:34px;border-radius:10px;background:var(--surface-2);display:grid;place-items:center;color:var(--violet-ink);flex:none}
.g-note-ic svg{width:17px;height:17px}
.g-note-body{font-size:14px;line-height:1.55;white-space:pre-wrap}

/* ---- AI modal (the draft, already written) ---- */
.ai-provenance{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:14px}
.ai-provenance svg{width:15px;height:15px;color:var(--violet-ink)}
.ai-controls{display:flex;align-items:flex-end;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.ai-ctl{display:flex;flex-direction:column;gap:4px;font-size:11.5px;color:var(--ink-3)}
.ai-ctl select{min-width:130px}
.ai-stage{min-height:220px}
.ai-text{width:100%;font-family:inherit;line-height:1.55;white-space:pre-wrap}
.ai-loading{display:flex;gap:6px;align-items:center;justify-content:center;height:200px}
.ai-dot{width:9px;height:9px;border-radius:50%;background:var(--violet-ink);opacity:.35;animation:aiBlink 1.2s var(--ease) infinite}
.ai-dot:nth-child(2){animation-delay:.18s}.ai-dot:nth-child(3){animation-delay:.36s}
@keyframes aiBlink{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}

/* ---- contextual AI actions (session/exam) ---- */
.ai-actions{display:flex;flex-direction:column;gap:10px}
.ai-chip{display:flex;align-items:center;gap:13px;width:100%;text-align:left;padding:13px 15px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--surface);transition:transform var(--tap),border-color var(--tap),box-shadow var(--tap);cursor:pointer}
.ai-chip:hover{transform:translateY(-2px);border-color:var(--violet-ink);box-shadow:var(--sh-1)}
.ai-chip>svg{color:var(--ink-4);width:18px;height:18px;flex:none}
.ai-chip-ic{width:38px;height:38px;border-radius:11px;flex:none;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--violet-ink),color-mix(in srgb,var(--violet-ink) 60%, var(--sky-ink)))}
.ai-chip-ic svg{width:19px;height:19px}
.ai-chip b{font-weight:600;font-size:14px;display:block}
.ai-chip span{font-size:12.5px}

/* ---- admin ---- */
.adm-line{display:flex;gap:12px;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.adm-line:last-child{border-bottom:0}.adm-line b{min-width:150px}

/* ---- gradebook ---- */
.gb-table th{white-space:nowrap}
.gb-w{display:block;font-size:10.5px;color:var(--ink-4);font-weight:500;font-family:var(--font-mono)}
.gb-table tr[data-id]{cursor:pointer}
.gb-letter{font-weight:700;min-width:34px;justify-content:center}
.mastery{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;font-size:12.5px;font-weight:700;font-family:var(--font-mono);color:var(--ink-3);background:var(--surface-2)}
.mastery.m1{background:color-mix(in srgb,var(--blush) 70%,transparent);color:var(--blush-ink)}
.mastery.m2{background:color-mix(in srgb,var(--peach) 70%,transparent);color:var(--peach-ink)}
.mastery.m3{background:color-mix(in srgb,var(--sky) 70%,transparent);color:var(--sky-ink)}
.mastery.m4{background:color-mix(in srgb,var(--mint) 70%,transparent);color:var(--mint-ink)}

@media (max-width:640px){
  .auth-demos{grid-template-columns:1fr}
  .g-scroll{padding:20px}
  .g-kids{grid-template-columns:1fr}
}

/* ============================================================
   OEdu Family — the super-max parent experience
   ============================================================ */
.g-scroll{max-width:1040px}
.fam .back-link{margin-top:4px}

/* family home */
.fam-digest{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.fam-digest-ic{width:40px;height:40px;border-radius:12px;flex:none;display:grid;place-items:center;background:rgba(255,255,255,.65);color:var(--tint-ink)}
.fam-digest-ic svg{width:20px;height:20px}
.fam-digest b{font-size:14px}.fam-digest .muted{font-size:13px}
.fam-kids{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.fam-kid{text-align:left;cursor:pointer;padding:20px;border-left:4px solid var(--tint-ink);transition:transform var(--tap),box-shadow var(--tap)}
.fam-kid:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.fam-kid-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.fam-kid-name{font-weight:700;font-size:17px;letter-spacing:-.01em}
.fam-grade{text-align:right;line-height:1}.fam-grade b{font-family:var(--font-display);font-size:26px;color:var(--tint-ink)}
.fam-grade span{display:block;font-size:11px;color:var(--ink-3);margin-top:2px}
.fam-kid-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:14px 0;border-top:1px solid var(--line)}
.fam-kid-stats>div{display:flex;flex-direction:column;gap:2px}.fam-kid-stats span{font-size:11px}
.fam-kid-stats b{font-size:16px;font-family:var(--font-mono)}.fam-kid-stats b.is-warn{color:var(--peach-ink)}
.fam-kid-cta{display:flex;align-items:center;gap:6px;justify-content:flex-end;color:var(--tint-ink);font-size:12.5px;font-weight:600}
.fam-kid-cta svg{width:15px;height:15px}

/* child hero */
.fam-hero{background:var(--tint);border-radius:var(--r-xl);padding:24px 26px;margin-bottom:8px}
.fam-hero-top{display:flex;align-items:center;gap:16px}
.fam-hero-name{font-family:var(--font-display);font-size:clamp(22px,3vw,28px);letter-spacing:-.02em;line-height:1.05}
.fam-hero-grade{text-align:right;line-height:1}
.fam-hero-grade b{font-family:var(--font-display);font-size:44px;color:var(--tint-ink)}
.fam-hero-grade span{display:block;font-size:12px;color:var(--ink-3);margin-top:2px}
.fam-summary{display:flex;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(0,0,0,.06)}
.fam-summary svg{width:18px;height:18px;color:var(--tint-ink);flex:none;margin-top:2px}
.fam-summary p{font-size:14.5px;line-height:1.6;color:var(--ink)}

/* sticky sub-nav */
.fam-subnav{position:sticky;top:0;z-index:5;display:flex;gap:6px;overflow-x:auto;padding:12px 0;margin-bottom:8px;
  background:var(--surface-2);backdrop-filter:saturate(1.2) blur(6px);scrollbar-width:none}
.fam-subnav::-webkit-scrollbar{display:none}
.fam-subnav button{flex:none;height:34px;padding:0 15px;border-radius:999px;font-size:13px;font-weight:600;color:var(--ink-3);
  border:1px solid var(--line);background:var(--surface);transition:var(--tap);white-space:nowrap}
.fam-subnav button:hover{color:var(--ink)}
.fam-subnav button.on{background:var(--ink);color:var(--surface);border-color:var(--ink)}

.fam-section{margin-top:26px;scroll-margin-top:64px}
.fam-h{font-family:var(--font-display);font-size:19px;letter-spacing:-.02em;margin-bottom:14px}

/* insights */
.insight{display:flex;align-items:center;gap:13px;padding:15px 16px;border-radius:var(--r-lg);margin-bottom:10px;border:1px solid var(--line);background:var(--surface)}
.insight.attention{background:color-mix(in srgb,var(--peach) 45%,var(--surface));border-color:transparent}
.insight.celebrate{background:color-mix(in srgb,var(--mint) 42%,var(--surface));border-color:transparent}
.insight-ic{width:38px;height:38px;border-radius:11px;flex:none;display:grid;place-items:center;background:rgba(255,255,255,.7)}
.insight.attention .insight-ic{color:var(--peach-ink)}.insight.celebrate .insight-ic{color:var(--mint-ink)}
.insight-ic svg{width:19px;height:19px}
.insight b{font-size:14.5px;display:block}.insight span{font-size:12.5px}
.insight .btn{flex:none}

/* quick quad */
.fam-quad{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}
.fam-quad-tile{background:var(--tint);border-radius:var(--r-lg);padding:16px}
.fq-ic{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.6);display:grid;place-items:center;color:var(--tint-ink);margin-bottom:12px}
.fq-ic svg{width:18px;height:18px}
.fq-val{font-family:var(--font-display);font-size:26px;letter-spacing:-.02em;color:var(--tint-ink)}
.fq-label{font-size:12px;color:var(--ink-3);margin-top:2px}

/* subject report card */
.subj-grades{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin-top:14px}
.subj-grade{padding:15px;border-left:3px solid var(--tint-ink)}
.subj-letter{text-align:right;line-height:1.05}.subj-letter b{font-family:var(--font-display);font-size:20px;color:var(--tint-ink)}
.subj-letter span{display:block;font-size:11px;color:var(--ink-3);font-family:var(--font-mono)}
.std-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.std-row:last-child{border-bottom:0}

/* attendance */
.att-big{line-height:1}.att-big b{font-family:var(--font-display);font-size:38px}.att-big span{display:block;font-size:12px;color:var(--ink-3)}
.att-counts{display:flex;gap:16px;font-size:13px;color:var(--ink-2)}
.att-counts>div{display:flex;align-items:center;gap:7px}
.att-counts .dot{width:9px;height:9px;border-radius:50%}
.dot.present{background:var(--mint-ink)}.dot.late{background:var(--butter-ink)}.dot.absent{background:var(--blush-ink)}
.att-heat{display:grid;grid-template-columns:repeat(20,1fr);gap:5px}
.att-cell{aspect-ratio:1;border-radius:5px;background:var(--surface-2)}
.att-cell.present{background:color-mix(in srgb,var(--mint-ink) 70%,var(--mint))}
.att-cell.late{background:var(--butter-ink)}
.att-cell.absent{background:var(--blush-ink)}

/* work */
.work-item{display:flex;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid var(--line)}
.work-item:last-child{border-bottom:0}
.work-item .grow>b{font-weight:600;font-size:14px;display:block}
.work-item .grow>span{font-size:12.5px;display:block;margin-top:2px}
.work-fb{display:flex;gap:6px;align-items:flex-start;font-size:12.5px;color:var(--ink-2);margin-top:6px;font-style:italic}
.work-fb svg{width:14px;height:14px;flex:none;margin-top:2px;color:var(--ink-4)}
.work-badge{flex:none;font-size:11.5px;font-weight:600;padding:4px 10px;border-radius:999px}
.work-badge.missing{background:color-mix(in srgb,var(--blush) 65%,transparent);color:var(--blush-ink)}
.work-badge.upcoming{background:color-mix(in srgb,var(--sky) 60%,transparent);color:var(--sky-ink)}
.work-badge.submitted{background:var(--surface-2);color:var(--ink-3)}
.missing-group{border:1px solid color-mix(in srgb,var(--blush-ink) 30%,var(--line))}

/* week schedule */
.fam-week{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.fam-week-item{display:flex;align-items:center;gap:11px;background:var(--tint);border-radius:var(--r-md);padding:12px 14px}
.fam-week-item .grow>b{font-size:13.5px;display:block}.fam-week-item .grow>span{font-size:11.5px;display:block;margin-top:1px}
.fam-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}

@media (max-width:720px){
  .fam-quad{grid-template-columns:repeat(2,1fr)}
  .att-heat{grid-template-columns:repeat(10,1fr)}
  .fam-hero-grade b{font-size:34px}
}
@media (max-width:640px){
  .g-topbar{padding:0 14px;gap:10px}
  .g-topbar .crumbs{display:none}
  .g-user span{display:none}
  .fam-hero-top{flex-wrap:wrap}
  .fam-hero-grade{margin-left:auto}
  .subj-grades{grid-template-columns:1fr 1fr}
}