/* =====================================================================
   ExamTool 2026 – Design-System
   Keine externen Abhängigkeiten (Schulnetze / Datenschutz).
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;

  --navy-950: #070F2B;
  --navy-900: #0B1B4D;
  --navy-800: #14286B;
  --navy-700: #1E3A8A;
  --navy-600: #2B4FB3;
  --lime-400: #C6F135;
  --lime-500: #9BE22B;
  --lime-600: #7DD321;
  --lime-700: #5EA615;

  --bg: #F4F6FB;
  --bg-elev: #FFFFFF;
  --bg-sunken: #EBEEF6;
  --bg-hover: #F0F3FA;
  --border: #DEE3EE;
  --border-strong: #C5CDDF;
  --text: #0F1A36;
  --text-2: #4A5677;
  --text-3: #7A84A0;
  --primary: #1E3A8A;
  --primary-hover: #17307A;
  --primary-soft: #E7ECFA;
  --on-primary: #FFFFFF;
  --accent: #7DD321;
  --accent-soft: #EEF9DC;
  --accent-text: #3F7A0A;
  --success: #17915A;
  --success-soft: #E2F6EC;
  --warning: #B7740A;
  --warning-soft: #FFF3DC;
  --danger: #D33B3B;
  --danger-soft: #FDE8E8;
  --info: #2B6FD6;
  --info-soft: #E5EFFD;
  --focus: 0 0 0 3px rgba(43, 79, 179, .35);

  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --shadow-xs: 0 1px 2px rgba(15, 26, 54, .06);
  --shadow-sm: 0 1px 3px rgba(15, 26, 54, .08), 0 1px 2px rgba(15, 26, 54, .04);
  --shadow: 0 8px 24px -6px rgba(15, 26, 54, .14), 0 2px 6px rgba(15, 26, 54, .06);
  --shadow-lg: 0 24px 60px -12px rgba(11, 27, 77, .28);
  --ease: cubic-bezier(.2, .8, .2, 1);
  --sidebar-w: 264px;
  --topbar-h: 64px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A1022; --bg-elev: #111A33; --bg-sunken: #0D152B; --bg-hover: #17213F;
    --border: #232F52; --border-strong: #33416B;
    --text: #E8ECF7; --text-2: #A9B3CF; --text-3: #7682A5;
    --primary: #7C9BFF; --primary-hover: #94AEFF; --primary-soft: #1A2650; --on-primary: #0A1022;
    --accent-soft: #1E2E12; --accent-text: #B5EC55;
    --success: #3CCB89; --success-soft: #10291F; --warning: #F2B84B; --warning-soft: #2E220C;
    --danger: #FF6B6B; --danger-soft: #331618; --info: #6FA6FF; --info-soft: #132443;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4); --shadow: 0 10px 30px -8px rgba(0, 0, 0, .55); --shadow-lg: 0 30px 70px -10px rgba(0, 0, 0, .7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0A1022; --bg-elev: #111A33; --bg-sunken: #0D152B; --bg-hover: #17213F;
  --border: #232F52; --border-strong: #33416B;
  --text: #E8ECF7; --text-2: #A9B3CF; --text-3: #7682A5;
  --primary: #7C9BFF; --primary-hover: #94AEFF; --primary-soft: #1A2650; --on-primary: #0A1022;
  --accent-soft: #1E2E12; --accent-text: #B5EC55;
  --success: #3CCB89; --success-soft: #10291F; --warning: #F2B84B; --warning-soft: #2E220C;
  --danger: #FF6B6B; --danger-soft: #331618; --info: #6FA6FF; --info-soft: #132443;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4); --shadow: 0 10px 30px -8px rgba(0, 0, 0, .55); --shadow-lg: 0 30px 70px -10px rgba(0, 0, 0, .7);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); font-size: 15px; line-height: 1.55; color: var(--text);
  background: var(--bg); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.015em; }
h1 { font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.1rem); font-weight: 700; }
h2 { font-size: 1.35rem; font-weight: 650; }
h3 { font-size: 1.08rem; font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
small, .small { font-size: .85em; }
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--radius-xs); }
::selection { background: color-mix(in srgb, var(--lime-400) 55%, transparent); }
hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }

.icon { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; vertical-align: -4px; }
.icon-sm { width: 16px; height: 16px; vertical-align: -3px; }
.icon-lg { width: 26px; height: 26px; }
.icon-xl { width: 40px; height: 40px; stroke-width: 1.5; }
.spin { animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Layout helpers ---------- */
.stack { display: flex; flex-direction: column; gap: var(--gap, 16px); }
.row { display: flex; align-items: center; gap: var(--gap, 12px); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.grow { flex: 1 1 auto; min-width: 0; }
.grid { display: grid; gap: var(--gap, 20px); }
.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)); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(var(--min, 260px), 1fr)); }
@media (max-width: 1100px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); --gap: 12px; }
  .grid-4 .stat { flex-direction: column; gap: 10px; padding: 16px; }
  .grid-4 .stat-icon { width: 38px; height: 38px; }
  .grid-4 .stat-value { font-size: 1.45rem; }
  .hide-sm { display: none !important; }
  .table th, .table td { padding: 11px 12px; }
}
.mt-0 { margin-top: 0 } .mt-1 { margin-top: 8px } .mt-2 { margin-top: 16px } .mt-3 { margin-top: 24px } .mt-4 { margin-top: 40px }
.mb-0 { margin-bottom: 0 } .mb-1 { margin-bottom: 8px } .mb-2 { margin-bottom: 16px } .mb-3 { margin-bottom: 24px }
.text-center { text-align: center; } .text-right { text-align: right; }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--bg-elev); --btn-fg: var(--text); --btn-bd: var(--border-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 0 16px;
  font: 600 14px/1 var(--font); color: var(--btn-fg); background: var(--btn-bg); border: 1px solid var(--btn-bd);
  border-radius: var(--radius-sm); cursor: pointer; text-decoration: none !important; white-space: nowrap; user-select: none;
  transition: background .15s var(--ease), border-color .15s, color .15s, transform .08s, box-shadow .15s;
  box-shadow: var(--shadow-xs);
}
.btn:hover { background: var(--bg-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; pointer-events: none; }
.btn-primary { --btn-bg: var(--primary); --btn-fg: var(--on-primary); --btn-bd: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-accent { --btn-bg: linear-gradient(135deg, var(--lime-400), var(--lime-600)); --btn-fg: #10220A; --btn-bd: transparent; background: var(--btn-bg); }
.btn-accent:hover { filter: brightness(1.05); background: var(--btn-bg); }
.btn-danger { --btn-bg: var(--danger); --btn-fg: #fff; --btn-bd: var(--danger); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 88%, #000); }
.btn-ghost { --btn-bg: transparent; --btn-bd: transparent; box-shadow: none; color: var(--text-2); }
.btn-ghost:hover { color: var(--text); background: var(--bg-hover); }
.btn-soft { --btn-bg: var(--primary-soft); --btn-fg: var(--primary); --btn-bd: transparent; box-shadow: none; }
.btn-soft:hover { background: color-mix(in srgb, var(--primary-soft) 80%, var(--primary) 8%); }
.btn-sm { min-height: 32px; padding: 0 12px; font-size: 13px; border-radius: 7px; }
.btn-lg { min-height: 50px; padding: 0 24px; font-size: 16px; border-radius: var(--radius); }
.btn-block { width: 100%; }
.btn-icon { width: 40px; padding: 0; }
.btn-icon.btn-sm { width: 32px; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 13px; font-weight: 600; color: var(--text-2); }
.hint { font-size: 12.5px; color: var(--text-3); }
.input, .select, .textarea {
  width: 100%; min-height: 42px; padding: 10px 13px; font: 400 15px/1.4 var(--font); color: var(--text);
  background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s; appearance: none;
}
.input::placeholder, .textarea::placeholder { color: var(--text-3); }
.input:hover, .select:hover, .textarea:hover { border-color: color-mix(in srgb, var(--primary) 40%, var(--border-strong)); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: var(--focus); }
.textarea { min-height: 120px; resize: vertical; line-height: 1.55; }
.select { padding-right: 38px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237A84A0' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9.5 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 11px center; background-size: 18px; }
.input-icon { position: relative; }
.input-icon .icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-3); pointer-events: none; }
.input-icon .input { padding-left: 40px; }
.input-lg { min-height: 52px; font-size: 16.5px; border-radius: var(--radius); }
.input.is-invalid { border-color: var(--danger); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 20px; }
.form-grid .span-2 { grid-column: 1 / -1; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }

/* Switch */
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; font-weight: 500; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch .track { width: 40px; height: 24px; border-radius: 999px; background: var(--border-strong); position: relative; transition: background .2s var(--ease); flex: none; }
.switch .track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform .2s var(--ease); }
.switch input:checked + .track { background: var(--primary); }
.switch input:checked + .track::after { transform: translateX(16px); }
.switch input:focus-visible + .track { box-shadow: var(--focus); }

/* Segmented control */
.segmented { display: inline-flex; padding: 4px; background: var(--bg-sunken); border-radius: 10px; gap: 4px; }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; }
.segmented span { display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 7px; font-weight: 600; font-size: 13.5px; color: var(--text-2); cursor: pointer; transition: all .15s; }
.segmented input:checked + span { background: var(--bg-elev); color: var(--text); box-shadow: var(--shadow-sm); }
.segmented input:focus-visible + span { box-shadow: var(--focus); }

/* ---------- Cards ---------- */
.card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card-body { padding: 22px 24px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 24px; border-bottom: 1px solid var(--border); }
.card-head h2, .card-head h3 { margin: 0; }
.card-foot { padding: 14px 24px; border-top: 1px solid var(--border); background: color-mix(in srgb, var(--bg-sunken) 55%, transparent); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
.card-link { display: block; color: inherit; transition: transform .15s var(--ease), box-shadow .15s, border-color .15s; }
.card-link:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--border-strong); }
@media (max-width: 600px) { .card-body { padding: 18px; } .card-head { padding: 16px 18px; } }

.stat { padding: 20px 22px; display: flex; gap: 16px; align-items: flex-start; }
.stat-icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); flex: none; }
.stat-icon.accent { background: var(--accent-soft); color: var(--accent-text); }
.stat-icon.warning { background: var(--warning-soft); color: var(--warning); }
.stat-icon.success { background: var(--success-soft); color: var(--success); }
.stat-value { font: 700 1.75rem/1.1 var(--font-display); letter-spacing: -.02em; }
.stat-label { color: var(--text-2); font-size: 13.5px; }

/* ---------- Badges / Chips ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; background: var(--bg-sunken); color: var(--text-2); white-space: nowrap; }
.badge .icon { width: 14px; height: 14px; vertical-align: 0; }
.badge-primary { background: var(--primary-soft); color: var(--primary); }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-accent { background: var(--accent-soft); color: var(--accent-text); }
.badge-dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge-live::before { animation: pulse 1.6s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

/* ---------- Alerts ---------- */
.alert { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius); border: 1px solid transparent; font-size: 14.5px; }
.alert .icon { margin-top: 1px; }
.alert-info { background: var(--info-soft); color: var(--info); border-color: color-mix(in srgb, var(--info) 20%, transparent); }
.alert-success { background: var(--success-soft); color: var(--success); border-color: color-mix(in srgb, var(--success) 20%, transparent); }
.alert-warning { background: var(--warning-soft); color: var(--warning); border-color: color-mix(in srgb, var(--warning) 25%, transparent); }
.alert-danger { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 25%, transparent); }
.alert > div { color: var(--text); }
.alert strong { color: inherit; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14.5px; }
.table th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; font-weight: 650; color: var(--text-3); padding: 12px 16px; border-bottom: 1px solid var(--border); white-space: nowrap; background: color-mix(in srgb, var(--bg-sunken) 50%, transparent); }
.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(--bg-hover); }
.table .actions { text-align: right; white-space: nowrap; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table-clickable tbody tr { cursor: pointer; }

/* ---------- Empty state ---------- */
.empty { text-align: center; padding: 56px 24px; color: var(--text-2); }
.empty-art { width: 84px; height: 84px; margin: 0 auto 18px; border-radius: 26px; display: grid; place-items: center; background: linear-gradient(135deg, var(--primary-soft), var(--accent-soft)); color: var(--primary); }
.empty h3 { color: var(--text); }

/* ---------- App Shell (Lehrpersonen) ---------- */
.shell { display: grid; grid-template-columns: var(--sidebar-w) minmax(0, 1fr); min-height: 100vh; min-height: 100dvh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; height: 100dvh; display: flex; flex-direction: column; gap: 6px; padding: 20px 14px;
  background: radial-gradient(120% 60% at 0% 0%, #1B3487 0%, transparent 60%), linear-gradient(180deg, var(--navy-900), var(--navy-950));
  color: #C9D3F2; overflow-y: auto; z-index: 40;
}
.sidebar .brand { display: flex; align-items: center; padding: 4px 10px 22px; color: #fff; }
.sidebar .brand svg { height: 56px; width: auto; }
.nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: #6E7DB0; padding: 16px 12px 6px; font-weight: 700; }
.nav-link { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px; color: #C9D3F2; font-weight: 550; font-size: 14.5px; transition: background .15s, color .15s; position: relative; }
.nav-link:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.nav-link.active { background: linear-gradient(90deg, rgba(198,241,53,.16), rgba(198,241,53,.04)); color: #fff; }
.nav-link.active::before { content: ""; position: absolute; left: -14px; top: 9px; bottom: 9px; width: 4px; border-radius: 0 4px 4px 0; background: var(--lime-400); }
.nav-link.active .icon { color: var(--lime-400); }
.nav-link .count { margin-left: auto; font-size: 11.5px; background: rgba(255,255,255,.1); padding: 1px 8px; border-radius: 99px; }
.sidebar-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 12px; }
.avatar { width: 36px; height: 36px; border-radius: 11px; display: grid; place-items: center; font-weight: 700; font-size: 13px; color: #10220A; background: linear-gradient(135deg, var(--lime-400), var(--lime-600)); flex: none; }
.user-chip .name { color: #fff; font-weight: 600; font-size: 14px; line-height: 1.2; }
.user-chip .role { color: #8D9AC6; font-size: 12px; }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 30; height: var(--topbar-h); display: flex; align-items: center; gap: 12px; padding: 0 32px; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(1.6) blur(12px); -webkit-backdrop-filter: saturate(1.6) blur(12px); border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent); }
.crumbs { display: flex; align-items: center; gap: 6px; color: var(--text-3); font-size: 13.5px; min-width: 0; }
.crumbs a { color: var(--text-2); }
.crumbs .sep { opacity: .5; }
.crumbs .current { color: var(--text); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.content { padding: 32px; max-width: 1320px; width: 100%; margin: 0 auto; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.page-head h1 { margin: 0; }
.page-head .lead { margin: 6px 0 0; color: var(--text-2); }
.menu-toggle { display: none; }
@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(86vw, var(--sidebar-w)); transform: translateX(-102%); transition: transform .25s var(--ease); box-shadow: var(--shadow-lg); }
  body.nav-open .sidebar { transform: none; }
  body.nav-open .scrim { opacity: 1; pointer-events: auto; }
  .menu-toggle { display: inline-flex; }
  .topbar { padding: 0 16px; }
  .content { padding: 22px 16px 40px; }
}
.scrim { position: fixed; inset: 0; background: rgba(7, 15, 43, .5); opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 35; }

/* ---------- Dialog / Modal ---------- */
dialog.modal { border: 0; padding: 0; border-radius: var(--radius-xl); background: var(--bg-elev); color: var(--text); box-shadow: var(--shadow-lg); width: min(560px, calc(100vw - 32px)); max-height: calc(100dvh - 48px); }
dialog.modal-lg { width: min(880px, calc(100vw - 32px)); }
dialog.modal::backdrop { background: rgba(7, 15, 43, .55); backdrop-filter: blur(3px); }
dialog.modal[open] { animation: pop .22s var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(.98); } }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px 8px; }
.modal-head h2 { margin: 0; font-size: 1.2rem; }
.modal-body { padding: 8px 24px 20px; overflow-y: auto; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 24px 20px; }

/* ---------- Toasts ---------- */
.toasts { position: fixed; z-index: 9999; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.toast { pointer-events: auto; display: flex; align-items: center; gap: 12px; min-width: 260px; max-width: 420px; padding: 13px 16px; border-radius: 12px; background: var(--navy-900); color: #fff; box-shadow: var(--shadow-lg); font-size: 14.5px; animation: toast-in .3s var(--ease); }
.toast.success .icon { color: var(--lime-400); }
.toast.error { background: #6E1717; }
.toast.leaving { animation: toast-out .25s var(--ease) forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }
@media (max-width: 600px) { .toasts { left: 12px; right: 12px; bottom: 12px; } .toast { max-width: none; } }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; overflow-x: auto; }
.tab { padding: 10px 14px; font-weight: 600; font-size: 14px; color: var(--text-2); border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; display: inline-flex; gap: 8px; align-items: center; }
.tab:hover { color: var(--text); text-decoration: none; }
.tab.active { color: var(--primary); border-color: var(--primary); }

/* ---------- Stepper (Prüfungsassistent) ---------- */
.stepper { display: flex; gap: 8px; counter-reset: step; }
.step { flex: 1; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 12px; background: var(--bg-sunken); color: var(--text-3); font-weight: 600; font-size: 14px; min-width: 0; }
.step .num { width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; background: var(--bg-elev); border: 1px solid var(--border); font-size: 13px; flex: none; }
.step.done { color: var(--success); background: var(--success-soft); }
.step.done .num { background: var(--success); color: #fff; border-color: transparent; }
.step.current { color: var(--primary); background: var(--primary-soft); box-shadow: inset 0 0 0 1.5px color-mix(in srgb, var(--primary) 40%, transparent); }
.step.current .num { background: var(--primary); color: var(--on-primary); border-color: transparent; }
.step span.txt { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 720px) { .step span.txt { display: none; } .step { justify-content: center; } }

/* ---------- Progress ---------- */
.progress { height: 8px; background: var(--bg-sunken); border-radius: 99px; overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--navy-600)); transition: width .4s var(--ease); }
.progress.accent > span { background: linear-gradient(90deg, var(--lime-600), var(--lime-400)); }

/* ---------- Dropdown ---------- */
.dropdown { position: relative; }
.dropdown-menu { position: absolute; right: 0; top: calc(100% + 6px); min-width: 210px; padding: 6px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); z-index: 50; display: none; }
.dropdown.open .dropdown-menu { display: block; animation: pop .15s var(--ease); }
.dropdown-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 11px; border-radius: 8px; font: 500 14px var(--font); color: var(--text); background: none; border: 0; cursor: pointer; text-align: left; }
.dropdown-item:hover { background: var(--bg-hover); text-decoration: none; }
.dropdown-item.danger { color: var(--danger); }

/* ---------- Simple centered pages (Warteraum, Ergebnis) ---------- */
.solo { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; background: radial-gradient(70% 50% at 50% 0%, color-mix(in srgb, var(--primary) 12%, transparent), transparent 70%), var(--bg); }
.solo-top { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; }
.solo-top .brand svg { height: 44px; width: auto; color: var(--text); }
.solo-main { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px 16px 48px; }
.solo-card { width: min(620px, 100%); }
.waiting-orb { width: 120px; height: 120px; margin: 0 auto 22px; border-radius: 50%; display: grid; place-items: center; position: relative; background: var(--primary-soft); color: var(--primary); }
.waiting-orb::before, .waiting-orb::after { content: ""; position: absolute; inset: -10px; border-radius: 50%; border: 2px solid color-mix(in srgb, var(--primary) 30%, transparent); animation: ripple 2.4s var(--ease) infinite; }
.waiting-orb::after { animation-delay: 1.2s; }
@keyframes ripple { from { transform: scale(.85); opacity: 1; } to { transform: scale(1.35); opacity: 0; } }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; font-size: 15px; }
.kv dt { color: var(--text-3); }
.kv dd { margin: 0; font-weight: 600; }
.grade { font: 800 4.2rem/1 var(--font-display); letter-spacing: -.04em; background: linear-gradient(135deg, var(--primary), var(--navy-600)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.code-box { font: 700 1.9rem/1 var(--mono); letter-spacing: .18em; padding: 18px 22px; border-radius: var(--radius); background: var(--bg-sunken); border: 1px dashed var(--border-strong); text-align: center; user-select: all; }

/* ---------- Prüfung (Lernende) ---------- */
.exam { min-height: 100vh; min-height: 100dvh; display: grid; grid-template-rows: auto 1fr auto; grid-template-columns: minmax(0, 1fr); background: var(--bg); overflow-x: clip; }
.exam-top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 16px; padding: 12px 24px; background: color-mix(in srgb, var(--bg-elev) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.exam-top .brand svg { height: 36px; width: auto; color: var(--text); }
.exam-title { font-weight: 650; font-size: 15px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exam-title small { display: block; font-weight: 500; color: var(--text-3); font-size: 12.5px; }
.save-pill { display: inline-flex; align-items: center; gap: 7px; height: 32px; padding: 0 12px; border-radius: 99px; font-size: 13px; font-weight: 600; background: var(--success-soft); color: var(--success); transition: all .2s; white-space: nowrap; }
.save-pill.saving { background: var(--info-soft); color: var(--info); }
.save-pill.offline { background: var(--warning-soft); color: var(--warning); }
.save-pill .icon { width: 17px; height: 17px; }
.timer { display: inline-flex; align-items: center; gap: 10px; padding: 4px 14px 4px 4px; border-radius: 99px; background: var(--bg-sunken); font: 700 17px/1 var(--mono); font-variant-numeric: tabular-nums; }
.timer svg.ring { width: 36px; height: 36px; transform: rotate(-90deg); }
.timer .ring-bg { stroke: var(--border); }
.timer .ring-fg { stroke: var(--primary); transition: stroke-dashoffset 1s linear, stroke .3s; }
.timer.warn { background: var(--warning-soft); color: var(--warning); }
.timer.warn .ring-fg { stroke: var(--warning); }
.timer.crit { background: var(--danger-soft); color: var(--danger); animation: pulse 1s infinite; }
.timer.crit .ring-fg { stroke: var(--danger); }

.exam-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; max-width: 1240px; width: 100%; margin: 0 auto; padding: 32px 24px; }
.q-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); padding: clamp(22px, 3vw, 40px); animation: q-in .28s var(--ease); }
@keyframes q-in { from { opacity: 0; transform: translateX(10px); } }
.q-card.back { animation-name: q-in-back; }
@keyframes q-in-back { from { opacity: 0; transform: translateX(-10px); } }
.q-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.q-num { font-weight: 700; color: var(--primary); font-size: 14px; letter-spacing: .02em; }
.q-text { font: 600 clamp(1.15rem, 1rem + .6vw, 1.45rem)/1.4 var(--font-display); letter-spacing: -.01em; margin-bottom: 24px; white-space: pre-wrap; overflow-wrap: anywhere; }
.q-image { margin: -6px 0 24px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: var(--bg-sunken); text-align: center; }
.q-image img { max-height: 420px; cursor: zoom-in; display: block; margin: 0 auto; }
.answers { display: flex; flex-direction: column; gap: 12px; }
.answer { position: relative; display: flex; align-items: center; gap: 14px; padding: 16px 18px; border: 1.5px solid var(--border); border-radius: var(--radius); background: var(--bg-elev); cursor: pointer; transition: border-color .15s, background .15s, transform .08s, box-shadow .15s; user-select: none; }
.answer:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); background: var(--bg-hover); }
.answer:active { transform: scale(.995); }
.answer input { position: absolute; opacity: 0; pointer-events: none; }
.answer .key { width: 30px; height: 30px; flex: none; display: grid; place-items: center; border-radius: 9px; border: 1.5px solid var(--border-strong); font: 700 13px var(--mono); color: var(--text-2); transition: all .15s; }
.answer.radio .key { border-radius: 50%; }
.answer .txt { flex: 1; font-size: 16px; overflow-wrap: anywhere; }
.answer:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent); }
.answer:has(input:checked) .key { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.answer:has(input:focus-visible) { box-shadow: var(--focus); }
.answer-text { min-height: 220px; font-size: 16px; }
.char-count { text-align: right; font-size: 12.5px; color: var(--text-3); margin-top: 6px; }
.q-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 28px; }
.flag-btn[aria-pressed="true"] { background: var(--warning-soft); color: var(--warning); border-color: color-mix(in srgb, var(--warning) 40%, transparent); }
.flag-btn[aria-pressed="true"] .icon { fill: currentColor; }

.exam-side { position: sticky; top: 92px; align-self: start; display: flex; flex-direction: column; gap: 16px; }
.nav-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.nav-dot { position: relative; aspect-ratio: 1; border-radius: 11px; border: 1.5px solid var(--border); background: var(--bg-elev); font: 650 13.5px var(--font); color: var(--text-2); cursor: pointer; display: grid; place-items: center; transition: all .15s; }
.nav-dot:hover { border-color: var(--primary); color: var(--primary); }
.nav-dot.answered { background: var(--primary-soft); border-color: transparent; color: var(--primary); }
.nav-dot.visited:not(.answered) { border-style: dashed; border-color: var(--warning); color: var(--warning); }
.nav-dot.current { background: var(--primary); color: var(--on-primary); border-color: var(--primary); box-shadow: 0 6px 14px -4px color-mix(in srgb, var(--primary) 60%, transparent); }
.nav-dot.flagged::after { content: ""; position: absolute; top: -4px; right: -4px; width: 11px; height: 11px; border-radius: 50%; background: var(--warning); border: 2px solid var(--bg-elev); }
.legend { display: grid; gap: 7px; font-size: 12.5px; color: var(--text-2); }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 4px; margin-right: 8px; vertical-align: -1px; border: 1.5px solid var(--border); }
.legend i.a { background: var(--primary-soft); border-color: transparent; }
.legend i.v { border-style: dashed; border-color: var(--warning); }
.legend i.f { background: var(--warning); border-radius: 50%; border: 0; }
.exam-bottom { display: none; }
@media (max-width: 960px) {
  .exam-body { grid-template-columns: 1fr; padding: 18px 14px 110px; gap: 16px; }
  .exam-side { position: static; }
  .exam-side .side-nav { display: none; }
  .exam-top { padding: 10px 14px; gap: 10px; }
  .exam-top .brand { display: none; }
  .exam-bottom { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; gap: 10px; align-items: center; padding: 12px 14px calc(12px + env(safe-area-inset-bottom)); background: color-mix(in srgb, var(--bg-elev) 92%, transparent); backdrop-filter: blur(12px); border-top: 1px solid var(--border); }
  .exam-bottom .strip { flex: 1; display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; padding: 2px; }
  .exam-bottom .strip .nav-dot { width: 38px; flex: none; }
  .q-actions .btn-nav { display: none; }
  .save-pill .lbl { display: none; }
  .exam-side > .btn, .exam-side > p { display: none; }
  .exam-top .theme-toggle { display: none; }
  .exam-title { font-size: 14px; }
  .timer { font-size: 15px; padding-right: 10px; }
  .timer svg.ring { width: 30px; height: 30px; }
  .q-card { padding: 20px 16px; border-radius: var(--radius-lg); }
  .answer { padding: 14px; }
}

/* Banner für Verbindungsprobleme */
.conn-banner { position: fixed; z-index: 60; left: 50%; top: 76px; transform: translateX(-50%); width: min(680px, calc(100vw - 24px)); display: none; gap: 12px; align-items: flex-start; padding: 14px 18px; border-radius: 14px; background: #F6C35B; color: #2B1D00; box-shadow: var(--shadow-lg); font-weight: 550; }
.conn-banner.is-danger { background: var(--danger); color: #fff; }
@media (max-width: 720px) { .conn-banner { top: auto; bottom: 78px; padding: 12px 14px; font-size: 14px; } }
.conn-banner.show { display: flex; animation: pop .25s var(--ease); }
.overlay { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 16px; background: rgba(7, 15, 43, .66); backdrop-filter: blur(6px); }
.overlay .card { width: min(480px, 100%); text-align: center; }

/* Lightbox Bild */
.zoom { position: fixed; inset: 0; z-index: 120; background: rgba(7,15,43,.88); display: grid; place-items: center; padding: 24px; cursor: zoom-out; }
.zoom img { max-width: 100%; max-height: 100%; border-radius: 12px; box-shadow: var(--shadow-lg); }

/* ---------- Editor (Fragen / Antworten) ---------- */
.answer-row { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto auto; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-elev); }
.answer-row + .answer-row { margin-top: 10px; }
.answer-row .letter { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--bg-sunken); font: 700 13px var(--mono); color: var(--text-2); }
.answer-row.correct { border-color: color-mix(in srgb, var(--success) 50%, var(--border)); background: color-mix(in srgb, var(--success-soft) 60%, var(--bg-elev)); }
.answer-row.correct .letter { background: var(--success); color: #fff; }
.correct-toggle { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--bg-elev); font: 600 13px var(--font); color: var(--text-2); cursor: pointer; }
.correct-toggle[aria-pressed="true"] { background: var(--success); color: #fff; border-color: var(--success); }
.type-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.type-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 16px; border: 1.5px solid var(--border); border-radius: var(--radius); cursor: pointer; transition: all .15s; background: var(--bg-elev); }
.type-card input { position: absolute; opacity: 0; }
.type-card .icon { color: var(--primary); width: 26px; height: 26px; }
.type-card strong { font-size: 14.5px; }
.type-card span { font-size: 12.5px; color: var(--text-3); }
.type-card:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent); }
@media (max-width: 720px) { .type-cards { grid-template-columns: 1fr; } }
.q-list-item { display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 14px 16px; border-bottom: 1px solid var(--border); background: var(--bg-elev); }
.q-list-item:last-child { border-bottom: 0; border-radius: 0 0 calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px); }
.q-list-item .handle { cursor: grab; color: var(--text-3); }
.q-list-item.dragging { opacity: .5; }
.q-list-item.drop-target { box-shadow: inset 0 3px 0 var(--primary); }
.q-list-item .qn { width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); font-weight: 700; font-size: 13px; }
.q-list-item .qt { font-weight: 550; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.dropzone { border: 2px dashed var(--border-strong); border-radius: var(--radius); padding: 22px; text-align: center; color: var(--text-2); cursor: pointer; transition: all .15s; background: var(--bg-sunken); }
.dropzone:hover, .dropzone.over { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.thumb { position: relative; display: inline-block; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.thumb img { display: block; max-height: 200px; }
.thumb .btn { position: absolute; top: 8px; right: 8px; }

/* ---------- Monitor ---------- */
.student-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.student { padding: 16px; border-radius: var(--radius-lg); background: var(--bg-elev); border: 1px solid var(--border); display: flex; flex-direction: column; gap: 12px; transition: border-color .2s, box-shadow .2s; }
.student.st-1 { border-color: color-mix(in srgb, var(--info) 45%, var(--border)); }
.student.st-2, .student.st-3, .student.st-4 { border-color: color-mix(in srgb, var(--success) 45%, var(--border)); }
.student.flagged { box-shadow: 0 0 0 2px color-mix(in srgb, var(--warning) 55%, transparent); }
.student .who { display: flex; align-items: center; gap: 10px; }
.student .who .avatar { width: 34px; height: 34px; border-radius: 10px; font-size: 12px; }
.student .name { font-weight: 650; line-height: 1.2; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.student .meta { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--text-3); }
.big-number { font: 800 2.4rem/1 var(--font-display); letter-spacing: -.03em; }

/* ---------- Misc ---------- */
.kbd { display: inline-block; min-width: 22px; padding: 2px 6px; border-radius: 6px; border: 1px solid var(--border-strong); border-bottom-width: 2px; font: 600 11.5px var(--mono); color: var(--text-2); background: var(--bg-elev); text-align: center; }
.divider-text { display: flex; align-items: center; gap: 12px; color: var(--text-3); font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; margin: 22px 0; }
.divider-text::before, .divider-text::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.skeleton { background: linear-gradient(90deg, var(--bg-sunken), var(--bg-hover), var(--bg-sunken)); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: 8px; }
@keyframes shimmer { to { background-position: -200% 0; } }
.list-plain { list-style: none; margin: 0; padding: 0; }
.pill-tabs { display: inline-flex; gap: 6px; flex-wrap: wrap; }
.pill-tabs a { padding: 7px 13px; border-radius: 99px; font-weight: 600; font-size: 13.5px; color: var(--text-2); background: var(--bg-sunken); }
.pill-tabs a.active { background: var(--primary); color: var(--on-primary); }
.pill-tabs a:hover { text-decoration: none; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: inline; }
.footer-note { text-align: center; color: var(--text-3); font-size: 12.5px; padding: 24px 0 8px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }
@media print {
  .sidebar, .topbar, .no-print, .toasts { display: none !important; }
  .shell { display: block; } .content { padding: 0; max-width: none; }
  body { background: #fff; color: #000; } .card { box-shadow: none; border-color: #ccc; }
}

/* ---------- Handy: Tabellen gestapelt, Pfad einzeilig, Listenzeilen ---------- */
.form-grid-name { grid-template-columns: 110px minmax(0, 1fr) minmax(0, 1fr); }
.list-plain > li > .row { flex-wrap: nowrap; }
.list-plain > li > .row > .grow { min-width: 0; }
.list-plain > li > .row > .stat-icon { flex: none; }
.crumbs > * { white-space: nowrap; }
.crumbs a { overflow: hidden; text-overflow: ellipsis; max-width: 22ch; }
@media (max-width: 720px) {
  .form-grid-name { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .form-grid-name > :first-child { grid-column: 1 / -1; max-width: 160px; }
  .crumbs > :not(:nth-last-child(-n+3)) { display: none; }
  .crumbs a { max-width: 12ch; }
  .table-stack thead { display: none; }
  .table-stack, .table-stack tbody { display: block; }
  .table-stack tr { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
  .table-stack tr:last-child { border-bottom: 0; }
  .table-stack td { display: block; padding: 0 !important; border: 0 !important; max-width: none !important; }
  .table-stack td:first-child, .table-stack td.lead { flex: 1 1 100%; min-width: 0; }
  .table-stack tr:has(.lead) td:first-child:not(.lead) { flex: 0 0 auto; color: var(--text-3); font-size: 13px; }
  .table-stack td.lead { order: -1; }
  .table-stack td.actions { margin-left: auto; }
  .table-stack td.num { text-align: left; }
  .table-stack td[data-label]::before { content: attr(data-label) " "; color: var(--text-3); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; margin-right: 3px; }
}
@media (max-width: 520px) {
  .correct-toggle .lbl { display: none; }
}