:root{
  --bg:#07100d;
  --bg2:#0c1713;
  --glass:rgba(18,34,29,.62);
  --glass2:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.12);
  --text:#f4f7f5;
  --muted:#9eada6;
  --accent:#bfe9d0;
  --accent2:#e0f5e8;
  --warn:#f4d18d;
  --danger:#ffaaaa;
  --radius:22px;
  --shadow:0 24px 70px rgba(0,0,0,.3);
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text)}
body{min-height:100vh;overflow-x:hidden}
.orb{position:fixed;border-radius:50%;filter:blur(110px);opacity:.16;pointer-events:none}
.orb-a{width:45vw;height:45vw;left:-15vw;top:-15vw;background:#54d993}
.orb-b{width:48vw;height:48vw;right:-20vw;bottom:-20vw;background:#507cff}
.hidden{display:none!important}
.glass{
  background:linear-gradient(135deg,rgba(255,255,255,.09),rgba(255,255,255,.035));
  border:1px solid var(--line);
  box-shadow:var(--shadow),inset 0 1px rgba(255,255,255,.07);
  backdrop-filter:blur(24px) saturate(135%);
  -webkit-backdrop-filter:blur(24px) saturate(135%);
  border-radius:var(--radius)
}
.login-view{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:min(680px,100%);padding:42px}
.brandline{display:block;color:var(--accent);font-size:.71rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
h1{font-size:clamp(2.5rem,5vw,4.6rem);line-height:.96;letter-spacing:-.055em;margin:14px 0 20px}
h2{font-size:1.75rem;letter-spacing:-.035em;margin:4px 0 0}
h3{font-size:1.28rem;letter-spacing:-.025em;margin:5px 0 0}
.muted{color:var(--muted);line-height:1.55}
.compact{font-size:.88rem}
label{display:block;color:var(--muted);font-size:.84rem;margin-top:15px}
input,select,textarea{
  width:100%;margin-top:7px;padding:12px 14px;border-radius:14px;
  border:1px solid var(--line);background:rgba(4,13,10,.54);color:var(--text);
  outline:none;font:inherit
}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{border-color:rgba(191,233,208,.58);box-shadow:0 0 0 3px rgba(191,233,208,.09)}
select option{background:#0d1814;color:#fff}
button{
  border:0;border-radius:14px;padding:11px 15px;font:inherit;font-weight:760;cursor:pointer;
  transition:.16s ease
}
button:hover{transform:translateY(-1px)}
button:disabled{opacity:.45;cursor:not-allowed;transform:none}
.primary{background:var(--accent2);color:#09150f}
.ghost{background:rgba(255,255,255,.07);color:var(--text);border:1px solid var(--line)}
.danger{background:rgba(255,130,130,.13);color:#ffd0d0;border:1px solid rgba(255,150,150,.2)}
.wide{width:100%;margin-top:18px}
.error-text{color:var(--danger);min-height:22px;margin-top:10px}

.app{display:grid;grid-template-columns:270px 1fr;gap:18px;padding:18px;min-height:100vh}
.sidebar{position:sticky;top:18px;height:calc(100vh - 36px);padding:20px;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:12px;padding:4px 4px 20px;border-bottom:1px solid var(--line)}
.brandmark{width:43px;height:43px;border-radius:14px;display:grid;place-items:center;background:var(--accent2);color:#08140e;font-weight:900}
.brand strong,.brand small{display:block}.brand small{color:var(--muted);margin-top:3px}
nav{display:grid;gap:7px;padding:17px 0}
.nav{width:100%;text-align:left;background:transparent;color:var(--muted);justify-content:flex-start}
.nav:hover,.nav.active{background:rgba(255,255,255,.08);color:#fff}
.identity{margin-top:auto;border-top:1px solid var(--line);padding-top:16px}
.identity strong,.identity small{display:block}
.identity small{color:var(--accent);margin-top:3px}
.main{min-width:0}
.topbar{position:sticky;top:18px;z-index:20;min-height:86px;padding:17px 21px;display:flex;justify-content:space-between;align-items:center}
.header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{padding:8px 11px;border-radius:999px;background:rgba(191,233,208,.11);border:1px solid rgba(191,233,208,.21);color:var(--accent);font-size:.78rem;font-weight:800}
.page{display:none;padding-top:18px}
.page.active{display:block}
.panel{padding:21px;margin-bottom:14px}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:16px}
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:14px}
.kpi{min-height:128px;padding:19px;display:flex;flex-direction:column;justify-content:space-between}
.kpi span,.kpi small{color:var(--muted)}
.kpi span{font-size:.83rem}.kpi strong{font-size:2.2rem;letter-spacing:-.05em}.kpi small{font-size:.78rem}
.class-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.class-card{padding:17px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035);cursor:pointer}
.class-card:hover{background:rgba(255,255,255,.065)}
.class-card h4{margin:6px 0;font-size:1rem}
.class-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.mini-badge{font-size:.72rem;color:var(--muted);padding:5px 8px;border:1px solid var(--line);border-radius:999px}
.class-header{display:flex;justify-content:space-between;align-items:center}
.subnav{padding:7px;display:flex;gap:6px;margin-bottom:14px}
.subnav-btn{background:transparent;color:var(--muted)}
.subnav-btn.active{background:rgba(255,255,255,.09);color:#fff}

.class-tab{display:none}.class-tab.active{display:block}
.two-col{display:grid;grid-template-columns:minmax(0,2fr) minmax(300px,1fr);gap:14px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:11px 9px;text-align:left;border-bottom:1px solid rgba(255,255,255,.075);vertical-align:top}
th{color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}
.form-grid label{margin:0}.span-all{grid-column:1/-1}.span-wide{grid-column:1/-1}
.small-input{width:min(280px,48vw);margin:0}
.matrix-wrap{overflow:auto;max-height:68vh;border:1px solid var(--line);border-radius:16px}
.matrix{border-collapse:separate;border-spacing:0;min-width:max-content;background:rgba(0,0,0,.08)}
.matrix th,.matrix td{border-right:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07);padding:0}
.matrix .person-head,.matrix .person-cell{position:sticky;left:0;z-index:6;background:#112019;min-width:180px;max-width:180px;padding:9px 10px}
.matrix .rank-head,.matrix .rank-cell{position:sticky;left:180px;z-index:6;background:#112019;min-width:64px;max-width:64px;padding:9px 8px}
.matrix .group-head{background:#162921;color:var(--accent);text-align:center;padding:8px;font-size:.68rem;letter-spacing:.05em;text-transform:uppercase}
.matrix .item-head{min-width:84px;max-width:84px;height:150px;vertical-align:bottom;background:#0d1a15}
.matrix .item-head>span{display:block;writing-mode:vertical-rl;transform:rotate(180deg);white-space:normal;padding:8px;margin:auto;font-size:.72rem;line-height:1.05;color:#dbe6e0}
.matrix-cell{display:grid;place-items:center;width:84px;height:42px;background:transparent;color:#fff;border-radius:0;padding:0}
.matrix-cell:hover{background:rgba(191,233,208,.11)}
.matrix-cell.status-x{color:#bff2d2;font-weight:900}
.matrix-cell.status-o{color:var(--warn);font-weight:900}
.matrix-cell.grade-pass{color:#c8f0d8;font-weight:850}
.matrix-cell.grade-fail{color:#ffc0c0;font-weight:850}
.matrix-cell.readonly{cursor:default}
.person-name{font-weight:760}.person-sub{color:var(--muted);font-size:.73rem;margin-top:2px}

.progress-list{display:grid;gap:10px}
.progress-row{display:grid;grid-template-columns:minmax(150px,1fr) 3fr 64px;gap:12px;align-items:center}
.progress-row span{color:var(--muted);font-size:.83rem}
.progress-track{height:9px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,rgba(115,202,153,.65),#dff5e7);border-radius:inherit}

.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stack-list{display:grid;gap:8px;margin-top:16px;max-height:430px;overflow:auto}
.stack-item{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:11px 12px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.025)}
.stack-item small{display:block;color:var(--muted);margin-top:3px}
.permission-form{display:grid;grid-template-columns:1.2fr 1.2fr repeat(4,auto) auto;gap:10px;align-items:end}
.permission-form label{margin:0}
.check{display:flex;gap:7px;align-items:center;white-space:nowrap;padding-bottom:10px}
.check input{width:auto;margin:0}
.settings-form{display:grid;grid-template-columns:1fr 1fr 180px auto;gap:10px;align-items:end}
.settings-form label{margin:0}

.result-dialog{border:0;padding:0;background:transparent;color:var(--text);width:min(560px,calc(100vw - 28px))}
.result-dialog::backdrop{background:rgba(0,0,0,.65);backdrop-filter:blur(6px)}
.dialog-card{position:relative;background:#102019;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:26px}
.dialog-close{position:absolute;right:14px;top:14px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.07);color:#fff}
.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}

.toast{position:fixed;right:24px;bottom:24px;z-index:100;padding:13px 16px;border-radius:14px;background:#e7f5ec;color:#07130d;font-weight:800;opacity:0;transform:translateY(24px);pointer-events:none;transition:.2s}
.toast.show{opacity:1;transform:translateY(0)}
.toast.error{background:#ffd2d2}
code{color:var(--accent)}

@media(max-width:1150px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .class-cards{grid-template-columns:repeat(2,1fr)}
  .admin-grid{grid-template-columns:1fr}
  .permission-form{grid-template-columns:1fr 1fr}
  .settings-form{grid-template-columns:1fr 1fr}
}
@media(max-width:800px){
  .app{grid-template-columns:1fr;padding:10px}
  .sidebar{position:static;height:auto}
  nav{grid-template-columns:repeat(2,1fr)}
  .topbar{top:10px}
  .two-col{grid-template-columns:1fr}
  .class-cards{grid-template-columns:1fr}
  .class-header{align-items:flex-start;gap:15px;flex-direction:column}
  .login-card{padding:28px 22px}
}
@media(max-width:560px){
  .kpi-grid{grid-template-columns:1fr}
  .form-grid,.permission-form,.settings-form{grid-template-columns:1fr}
}


.stack-user-info{min-width:0;flex:1}
.stack-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.user-inactive{opacity:.68;background:rgba(255,255,255,.015)}
.status-active{color:#bfe9d0;font-weight:800}
.status-inactive{color:#ffb9b9;font-weight:800}
.user-toggle-btn{padding:7px 10px;font-size:.78rem}
.user-toggle-btn:disabled{opacity:.35;cursor:not-allowed}


/* V4 Benutzerverwaltung */
.user-admin-card{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:14px;
  align-items:center;
  padding:14px;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(255,255,255,.03)
}
.user-admin-card.user-inactive{opacity:.72}
.user-admin-card.user-locked{border-color:rgba(244,209,141,.28)}
.user-admin-main{min-width:0}
.user-admin-title{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.user-admin-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:5px;color:var(--muted);font-size:.8rem}
.user-admin-actions{display:flex;gap:7px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.user-admin-actions button{font-size:.76rem;padding:8px 10px;white-space:nowrap}
.status-locked{color:var(--warn);font-weight:850}
@media(max-width:900px){
  .user-admin-card{grid-template-columns:1fr}
  .user-admin-actions{justify-content:flex-start}
}