/* ============ Provas — design system ============ */
:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f9fafc;
  --border: #e6e8ef;
  --border-strong: #d5d9e3;
  --text: #171a23;
  --text-2: #4b5263;
  --muted: #8a91a3;
  --primary: #4f46e5;
  --primary-600: #4338ca;
  --primary-50: #eef0ff;
  --primary-100: #e0e3ff;
  --success: #0f9d6e;
  --success-50: #e7f7f1;
  --danger: #dc3a4a;
  --danger-50: #fdeef0;
  --warning: #c27c0e;
  --warning-50: #fdf5e6;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 6px 16px -4px rgba(16, 24, 40, .06);
  --shadow-lg: 0 24px 48px -12px rgba(16, 24, 40, .25);
  --radius: 14px;
  --radius-sm: 9px;
  --sidebar: 248px;
  --focus: 0 0 0 4px rgba(79, 70, 229, .16);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1016;
    --surface: #161922;
    --surface-2: #1b1f2a;
    --border: #262b38;
    --border-strong: #333a4b;
    --text: #eceef4;
    --text-2: #b4bacb;
    --muted: #7c8499;
    --primary: #7c74ff;
    --primary-600: #6c63ff;
    --primary-50: #1f1d3d;
    --primary-100: #2a2752;
    --success: #34c58f;
    --success-50: #11281f;
    --danger: #f06272;
    --danger-50: #2e1519;
    --warning: #e2a33a;
    --warning-50: #2c2210;
    --shadow-sm: none;
    --shadow: 0 1px 0 rgba(255,255,255,.02), 0 8px 24px -8px rgba(0,0,0,.5);
    --shadow-lg: 0 24px 48px -12px rgba(0,0,0,.7);
    --focus: 0 0 0 4px rgba(124, 116, 255, .25);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14.5px/1.55 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-600); }
h1, h2, h3 { margin: 0; letter-spacing: -.015em; line-height: 1.25; }
h1 { font-size: 24px; font-weight: 700; }
h2 { font-size: 16px; font-weight: 650; }
h3 { font-size: 14px; font-weight: 650; }
p { margin: 0; }
.ico { flex: none; vertical-align: middle; }
.muted { color: var(--muted); }
.text-2 { color: var(--text-2); }
.nowrap { white-space: nowrap; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .92em; }
.pre { white-space: pre-wrap; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ============ layout ============ */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column;
  background: var(--surface); border-right: 1px solid var(--border); padding: 20px 14px;
}
.brand { display: flex; align-items: center; gap: 11px; padding: 4px 10px 22px; color: var(--text); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6 60%, #a855f7); box-shadow: 0 6px 14px -4px rgba(99,102,241,.55);
}
.brand b { display: block; font-size: 15px; letter-spacing: -.01em; }
.brand small { display: block; color: var(--muted); font-size: 11.5px; margin-top: -2px; }
.nav-label { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding: 14px 12px 6px; }
.nav a {
  display: flex; align-items: center; gap: 11px; padding: 9px 12px; border-radius: 10px;
  color: var(--text-2); font-weight: 500; transition: background .15s, color .15s;
}
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--primary-50); color: var(--primary); }
.nav a.active .ico { color: var(--primary); }
.sidebar-foot { margin-top: auto; border-top: 1px solid var(--border); padding-top: 14px; display: flex; align-items: center; gap: 10px; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 650; font-size: 13px;
  background: var(--primary-100); color: var(--primary);
}
.sidebar-foot .who { flex: 1; min-width: 0; line-height: 1.25; }
.sidebar-foot .who b { display: block; font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-foot .who small { color: var(--muted); font-size: 12px; }

.main { min-width: 0; padding: 28px 36px 60px; }
.topbar { display: none; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.page-head p { color: var(--text-2); margin-top: 4px; }
.page-head .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.crumb { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.crumb:hover { color: var(--primary); }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 18px; align-items: start; }
.stack { display: flex; flex-direction: column; gap: 18px; }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }

/* ============ cards ============ */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.card-head p { color: var(--muted); font-size: 13px; margin-top: 2px; }
.card-body { padding: 20px; }
.card-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; background: var(--surface-2); border-radius: 0 0 var(--radius) var(--radius); }

.stat { padding: 18px 20px; display: flex; gap: 14px; align-items: center; }
.stat .ic { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.stat .ic.green { background: var(--success-50); color: var(--success); }
.stat .ic.amber { background: var(--warning-50); color: var(--warning); }
.stat .ic.rose { background: var(--danger-50); color: var(--danger); }
.stat b { display: block; font-size: 24px; letter-spacing: -.02em; line-height: 1.1; }
.stat span { color: var(--muted); font-size: 13px; }

.quick { display: flex; gap: 14px; align-items: center; padding: 18px 20px; color: var(--text); transition: border-color .15s, transform .15s, box-shadow .15s; }
.quick:hover { border-color: var(--primary-100); box-shadow: var(--shadow); transform: translateY(-1px); color: var(--text); }
.quick .ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.quick b { display: block; }
.quick span { color: var(--muted); font-size: 13px; }

/* ============ buttons ============ */
.btn {
  --b: var(--surface); --c: var(--text); --bd: var(--border-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: 7px; height: 38px; padding: 0 15px;
  border-radius: 10px; border: 1px solid var(--bd); background: var(--b); color: var(--c);
  font: inherit; font-weight: 550; font-size: 14px; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, box-shadow .15s, transform .05s;
  box-shadow: var(--shadow-sm);
}
.btn:hover { background: var(--surface-2); color: var(--c); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: var(--focus); }
.btn[disabled] { opacity: .5; pointer-events: none; }
.btn-primary { --b: var(--primary); --c: #fff; --bd: var(--primary); box-shadow: 0 1px 2px rgba(79,70,229,.3), inset 0 1px 0 rgba(255,255,255,.12); }
.btn-primary:hover { background: var(--primary-600); border-color: var(--primary-600); color: #fff; }
.btn-danger { --c: var(--danger); }
.btn-danger:hover { background: var(--danger-50); border-color: var(--danger); color: var(--danger); }
.btn-ghost { --b: transparent; --bd: transparent; box-shadow: none; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { height: 32px; padding: 0 11px; font-size: 13px; border-radius: 9px; }
.btn-lg { height: 46px; padding: 0 22px; font-size: 15px; border-radius: 12px; }
.btn-icon { width: 34px; padding: 0; height: 34px; }
.btn-block { width: 100%; }

/* ============ forms ============ */
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > label, .label { font-size: 13px; font-weight: 550; color: var(--text-2); }
.field .hint { font-size: 12px; color: var(--muted); }
.input, select.input, textarea.input {
  width: 100%; height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font: inherit; font-size: 14.5px;
  transition: border-color .15s, box-shadow .15s;
}
textarea.input { height: auto; min-height: 96px; padding: 10px 12px; resize: vertical; line-height: 1.5; }
.input:focus { outline: none; border-color: var(--primary); box-shadow: var(--focus); }
.input::placeholder { color: var(--muted); }
select.input { appearance: none; padding-right: 34px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%238a91a3' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 11px center; }
.input-icon { position: relative; }
.input-icon .ico { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.input-icon .input { padding-left: 38px; }
.form-grid { display: grid; gap: 14px 16px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.col-12 { grid-column: span 12; } .col-8 { grid-column: span 8; } .col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; } .col-3 { grid-column: span 3; } .col-2 { grid-column: span 2; }
.check { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; user-select: none; font-weight: 500; color: var(--text-2); }
.check input { width: 17px; height: 17px; accent-color: var(--primary); margin: 0; }
.seg { display: inline-flex; padding: 3px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 11px; gap: 2px; }
.seg label { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg span { display: block; padding: 6px 13px; border-radius: 8px; font-size: 13px; font-weight: 550; color: var(--text-2); cursor: pointer; }
.seg input:checked + span { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm), 0 0 0 1px var(--border); }
.seg input:focus-visible + span { box-shadow: var(--focus); }
.num { display: flex; flex-direction: column; gap: 6px; align-items: stretch; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); }
.num .label { display: flex; align-items: center; gap: 7px; }
.num .input { text-align: center; font-weight: 650; font-size: 18px; height: 44px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.f { background: #10b981; } .dot.m { background: #f59e0b; } .dot.d { background: #ef4444; } .dot.b { background: #8b5cf6; }

/* ============ tables ============ */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: separate; border-spacing: 0; }
.table th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 11px 16px; background: var(--surface-2); border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td { padding: 13px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background .1s; }
.table tbody tr:hover { background: var(--surface-2); }
.table tr.clickable { cursor: pointer; }
.table tr.selected { background: var(--primary-50) !important; box-shadow: inset 3px 0 0 var(--primary); }
.table .num-col { text-align: right; font-variant-numeric: tabular-nums; }
.table .actions-col { text-align: right; white-space: nowrap; width: 1%; }
.table .w-id { width: 70px; color: var(--muted); font-variant-numeric: tabular-nums; }
.table .body-cell { max-width: 560px; }
.table .body-cell .clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ============ badges / pills ============ */
.badge { display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); white-space: nowrap; }
.badge.green { background: var(--success-50); color: var(--success); border-color: transparent; }
.badge.red { background: var(--danger-50); color: var(--danger); border-color: transparent; }
.badge.amber { background: var(--warning-50); color: var(--warning); border-color: transparent; }
.badge.indigo { background: var(--primary-50); color: var(--primary); border-color: transparent; }
.badge.violet { background: #f3edff; color: #7c3aed; border-color: transparent; }
@media (prefers-color-scheme: dark) { .badge.violet { background: #2a1d47; color: #b79cff; } }
.diff { display: inline-flex; align-items: center; gap: 6px; font-weight: 550; color: var(--text-2); font-size: 13px; }

/* ============ alerts / flash ============ */
.flash { display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; border-radius: 12px; margin-bottom: 18px; font-weight: 500; animation: drop .25s ease; }
.flash.ok { background: var(--success-50); color: var(--success); }
.flash.err { background: var(--danger-50); color: var(--danger); }
.flash.info { background: var(--primary-50); color: var(--primary); }
@keyframes drop { from { opacity: 0; transform: translateY(-4px); } }

.empty { text-align: center; padding: 48px 20px; color: var(--muted); }
.empty .ic { width: 52px; height: 52px; margin: 0 auto 12px; border-radius: 16px; display: grid; place-items: center; background: var(--surface-2); color: var(--muted); }
.empty b { display: block; color: var(--text); font-size: 15px; margin-bottom: 4px; }

/* ============ dialog ============ */
dialog.modal { border: 0; padding: 0; border-radius: 18px; background: var(--surface); color: var(--text); box-shadow: var(--shadow-lg); width: min(560px, calc(100vw - 32px)); max-height: calc(100vh - 48px); }
dialog.modal.wide { width: min(920px, calc(100vw - 32px)); }
dialog.modal::backdrop { background: rgba(15, 18, 30, .45); backdrop-filter: blur(3px); }
dialog.modal[open] { animation: pop .18s ease; display: flex; flex-direction: column; }
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(.98); } }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-body { padding: 22px; overflow: auto; }
.modal-foot { padding: 14px 22px; display: flex; justify-content: flex-end; gap: 8px; border-top: 1px solid var(--border); background: var(--surface-2); }

/* ============ login ============ */
.login-wrap { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.login-art {
  position: relative; overflow: hidden; color: #fff; padding: 48px; display: flex; flex-direction: column; justify-content: space-between;
  background: radial-gradient(1200px 600px at -10% -10%, #8b5cf6 0%, transparent 55%), radial-gradient(900px 600px at 110% 110%, #06b6d4 0%, transparent 50%), linear-gradient(135deg, #312e81, #4f46e5);
}
.login-art h2 { font-size: 34px; font-weight: 700; letter-spacing: -.03em; line-height: 1.15; max-width: 460px; }
.login-art p { opacity: .82; max-width: 420px; margin-top: 14px; font-size: 15px; }
.login-art .pill { display: inline-flex; gap: 8px; align-items: center; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); padding: 6px 12px; border-radius: 999px; font-size: 13px; backdrop-filter: blur(6px); }
.login-art .paper { position: absolute; right: -60px; bottom: 90px; width: 320px; transform: rotate(-8deg); background: rgba(255,255,255,.96); color: #1f2937; border-radius: 14px; padding: 18px; box-shadow: 0 30px 60px -20px rgba(0,0,0,.5); font-size: 12px; }
.login-art .paper i { display: block; height: 7px; border-radius: 4px; background: #e5e7eb; margin: 7px 0; }
.login-art .paper .opt { display: flex; gap: 8px; align-items: center; margin: 6px 0; }
.login-art .paper .opt span { width: 13px; height: 13px; border-radius: 50%; border: 1.5px solid #9ca3af; }
.login-art .paper .opt.on span { background: #10b981; border-color: #10b981; }
.login-form { display: grid; place-items: center; padding: 40px 24px; background: var(--bg); }
.login-card { width: min(400px, 100%); }
.login-card h1 { font-size: 26px; }
.login-card .sub { color: var(--text-2); margin: 6px 0 26px; }

/* ============ question / answers ============ */
.answers { display: flex; flex-direction: column; gap: 8px; }
.answer { display: flex; gap: 12px; align-items: flex-start; padding: 11px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.answer.correct { border-color: color-mix(in srgb, var(--success) 45%, transparent); background: var(--success-50); }
.answer .letter { flex: none; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-weight: 700; font-size: 13px; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }
.answer.correct .letter { background: var(--success); color: #fff; border-color: var(--success); }
.answer .txt { flex: 1; white-space: pre-wrap; padding-top: 2px; min-width: 0; }
.qbody { white-space: pre-wrap; font-size: 15.5px; line-height: 1.65; }

/* correção */
.correct-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 18px; align-items: start; }
.qnav { display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); gap: 6px; }
.qnav button { height: 40px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); font: inherit; font-weight: 650; color: var(--text-2); cursor: pointer; position: relative; }
.qnav button.done { background: var(--surface-2); }
.qnav button.hit { background: var(--success-50); border-color: transparent; color: var(--success); }
.qnav button.miss { background: var(--danger-50); border-color: transparent; color: var(--danger); }
.qnav button.current { outline: 2px solid var(--primary); outline-offset: 1px; }
.pick { cursor: pointer; transition: border-color .12s, background .12s, box-shadow .12s; }
.pick:hover { border-color: var(--primary); }
.pick.marked { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-100); }
.pick.marked.correct { border-color: var(--success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 25%, transparent); }
.pick input { display: none; }
.kbd { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; font-size: 11.5px; font-weight: 600; border-radius: 6px; background: var(--surface-2); border: 1px solid var(--border-strong); border-bottom-width: 2px; color: var(--text-2); }
.scan { max-width: 560px; margin: 6vh auto 0; text-align: center; }
.scan .big { height: 64px; font-size: 26px; text-align: center; letter-spacing: .08em; font-weight: 650; border-radius: 16px; }
.scan .ic { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 20px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.grade { font-size: 40px; font-weight: 750; letter-spacing: -.03em; line-height: 1; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: 13.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 550; text-align: right; }
.summary-row { display: flex; justify-content: space-between; align-items: center; padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: 13.5px; }
.summary-row:last-child { border-bottom: 0; }
.summary-row.total { font-weight: 700; border-top: 1px solid var(--border); border-bottom: 0; margin-top: 4px; padding-top: 12px; }

.qitem { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.qitem .pos { flex: none; width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-2); font-weight: 650; font-size: 13px; color: var(--text-2); }
.qitem .b { flex: 1; min-width: 0; }
.qitem .b .clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.qlist { display: flex; flex-direction: column; gap: 8px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs a { padding: 10px 14px; color: var(--text-2); font-weight: 550; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--primary); border-color: var(--primary); }

.toast { position: fixed; right: 24px; bottom: 24px; z-index: 50; background: var(--text); color: var(--surface); padding: 12px 16px; border-radius: 12px; box-shadow: var(--shadow-lg); font-weight: 550; display: flex; gap: 10px; align-items: center; animation: drop .2s ease; }

/* ============ texto rico ============ */
.rich { white-space: pre-wrap; overflow-wrap: anywhere; }
.rich img { max-width: 100%; height: auto; border-radius: 8px; vertical-align: middle; margin: 4px 0; }
.rich pre {
  white-space: pre; overflow-x: auto; margin: 8px 0; padding: 12px 14px; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--border); tab-size: 4;
  font: 13.5px/1.55 ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}
.rich code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .92em; background: var(--surface-2); padding: 1px 5px; border-radius: 5px; }
.rich pre code { background: none; padding: 0; }
.rich ul, .rich ol { margin: 4px 0; padding-left: 26px; white-space: normal; }
.rich li { white-space: pre-wrap; }
.rich sub, .rich sup { font-size: .75em; line-height: 0; }

.rte { border: 1px solid var(--border-strong); border-radius: 12px; background: var(--surface); transition: border-color .15s, box-shadow .15s; position: relative; min-width: 0; flex: 1; }
.rte:focus-within { border-color: var(--primary); box-shadow: var(--focus); }
.rte-bar { display: flex; flex-wrap: wrap; gap: 2px; padding: 5px 6px; border-bottom: 1px solid var(--border); background: var(--surface-2); border-radius: 12px 12px 0 0; }
.rte-bar button { min-width: 30px; height: 30px; padding: 0 7px; border: 0; border-radius: 7px; background: transparent; color: var(--text-2); font: inherit; font-size: 14px; cursor: pointer; display: inline-grid; place-items: center; }
.rte-bar button:hover { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }
.rte-bar button.on { background: var(--primary-50); color: var(--primary); }
.rte-bar .sep { width: 1px; margin: 5px 4px; background: var(--border-strong); }
.rte-area { min-height: 150px; padding: 12px 14px; outline: none; font-size: 15px; line-height: 1.6; }
.rte-area:empty::before { content: attr(data-placeholder); color: var(--muted); pointer-events: none; }
.rte.busy::after { content: "Enviando imagem…"; position: absolute; right: 10px; bottom: 8px; font-size: 12px; color: var(--primary); background: var(--primary-50); padding: 3px 8px; border-radius: 99px; }
.rte-compact .rte-area { min-height: 38px; padding: 8px 12px; font-size: 14.5px; }
.rte-compact .rte-bar { display: none; }
.rte-compact:focus-within .rte-bar { display: flex; }
.answer .rte { background: var(--surface); }

/* ============ correção por foto ============ */
.drop { border: 2px dashed var(--border-strong); border-radius: 14px; padding: 26px 16px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 8px; transition: border-color .15s, background .15s; }
.drop.over { border-color: var(--primary); background: var(--primary-50); }
.drop .ic { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.sheet { position: relative; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); background: #fff; }
.sheet img { display: block; width: 100%; height: auto; }
.sheet .mk { position: absolute; transform: translate(-50%, -50%); border-radius: 50%; pointer-events: none; }
.sheet .mk.read { border: 2.5px solid #2563eb; }
.sheet .mk.correct { box-shadow: 0 0 0 2px #10b981; }
.sheet .mk.flag { border: 2.5px solid #f59e0b; }
.omr-row.flag { background: var(--warning-50); }
.omr-row td { vertical-align: middle; }
.fillbar { display: inline-flex; gap: 3px; vertical-align: middle; }
.fillbar i { width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--border-strong); display: inline-grid; place-items: center; font-style: normal; font-size: 9px; color: var(--muted); }

/* ============ câmera ao vivo ============ */
.cam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 18px; align-items: start; }
.cam { position: relative; overflow: hidden; background: #0b0d12; aspect-ratio: 3 / 4; max-height: calc(100vh - 170px); width: 100%; }
.cam video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cam-guide { position: absolute; inset: 7% 10%; pointer-events: none; }
.cam-guide i { position: absolute; width: 34px; height: 34px; border: 4px solid rgba(255,255,255,.85); }
.cam-guide i:nth-child(1) { left: 0; top: 0; border-right: 0; border-bottom: 0; border-radius: 10px 0 0 0; }
.cam-guide i:nth-child(2) { right: 0; top: 0; border-left: 0; border-bottom: 0; border-radius: 0 10px 0 0; }
.cam-guide i:nth-child(3) { right: 0; bottom: 0; border-left: 0; border-top: 0; border-radius: 0 0 10px 0; }
.cam-guide i:nth-child(4) { left: 0; bottom: 0; border-right: 0; border-top: 0; border-radius: 0 0 0 10px; }
.cam-status { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); max-width: 90%; padding: 8px 16px; border-radius: 999px; background: rgba(15,18,30,.72); color: #fff; font-weight: 600; font-size: 14px; backdrop-filter: blur(6px); text-align: center; }
.cam-status.busy { background: rgba(79,70,229,.88); }
.cam-status.ok { background: rgba(16,185,129,.9); }
.cam-status.err { background: rgba(220,58,74,.9); }
.cam-result { position: absolute; left: 14px; right: 14px; bottom: 14px; padding: 14px 18px; border-radius: 16px; color: #fff; text-align: center; animation: pop .2s ease; line-height: 1.5; }
.cam-result.ok { background: rgba(16,185,129,.93); }
.cam-result.warn { background: rgba(217,119,6,.93); }
.cam-result .big { font-size: 38px; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
.cam-result .big small { font-size: 18px; opacity: .85; }
.cam-start { position: absolute; inset: 0; display: flex; flex-direction: column; gap: 12px; align-items: center; justify-content: center; text-align: center; padding: 20px; background: rgba(11,13,18,.6); color: #fff; }
.cam-start[hidden] { display: none; }
@media (max-width: 1100px) { .cam-layout { grid-template-columns: 1fr; } }

/* ============ responsive ============ */
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split, .correct-layout { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 40; left: 0; top: 0; width: 270px; transform: translateX(-100%); transition: transform .2s; box-shadow: var(--shadow-lg); }
  .shell.nav-open .sidebar { transform: none; }
  .topbar { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 30; }
  .main { padding: 20px 16px 48px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid > * { grid-column: span 12 !important; }
  .login-wrap { grid-template-columns: 1fr; }
  .login-art { display: none; }
  .table th, .table td { padding: 10px 12px; }
}
@media print { .sidebar, .topbar, .page-head .actions { display: none !important; } .shell { display: block; } }