:root {
  /* сеть и инфраструктура: тёмный терминал, сигнальный циан, янтарный статус */
  --bg:#080d14; --bg-deep:#05080d; --panel:#0f1822; --panel2:#152231; --panel3:#1b2b3d;
  --text:#dbe7f3; --muted:#7f93a8; --accent:#22d3ee; --accent-dim:#0e7490;
  --ok:#34d399; --warn:#fbbf24; --err:#f87171; --border:#1f3145;
  --route:#7c5cff; --mono:"JetBrains Mono","DejaVu Sans Mono",ui-monospace,SFMono-Regular,monospace;
}
*{box-sizing:border-box}
body{margin:0;color:var(--text);line-height:1.55;
  font-family:"Segoe UI","DejaVu Sans",system-ui,sans-serif;
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(34,211,238,.10), transparent 60%),
    radial-gradient(900px 500px at 92% 0%, rgba(124,92,255,.10), transparent 62%),
    linear-gradient(180deg, var(--bg), var(--bg-deep));
  background-attachment:fixed;
  min-height:100vh}
/* сетка-подложка как в трассировке маршрутов */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(34,211,238,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(34,211,238,.045) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 75%)}
header.topbar,main{position:relative;z-index:1}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

header.topbar{display:flex;gap:18px;align-items:center;padding:12px 24px;
  background:rgba(9,15,22,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30;flex-wrap:wrap;
  box-shadow:0 1px 0 rgba(34,211,238,.18)}
.brand{font-weight:700;font-size:16px;color:var(--text);font-family:var(--mono);letter-spacing:.4px}
.brand::before{content:"◈ ";color:var(--accent)}
header.topbar nav{display:flex;gap:14px;align-items:center;margin-left:auto;flex-wrap:wrap}
header.topbar nav a{font-size:13px;color:#a8bccf;padding:5px 2px;border-bottom:2px solid transparent}
header.topbar nav a:hover{color:var(--accent);border-bottom-color:var(--accent-dim);text-decoration:none}
.who{color:var(--muted);font-size:13px}
header.topbar form{margin:0}

main{max-width:1080px;margin:0 auto;padding:26px 18px 90px}
h1{font-size:24px;margin:0 0 6px;letter-spacing:-.2px}
h1::after{content:"";display:block;width:46px;height:2px;margin-top:8px;
  background:linear-gradient(90deg,var(--accent),transparent)}
h2{font-size:19px;margin:26px 0 12px}
h3{font-size:16px;margin:0 0 10px}
.sub{color:var(--muted);margin:0 0 20px}
.muted{color:var(--muted)}
.small{font-size:13px}
.tiny{font-size:12px}
.mono{font-family:var(--mono);font-size:13px;color:#9fd8e8}
.ok-text{color:var(--ok);font-weight:600}
.err-text{color:var(--err);font-weight:600}

.card{background:linear-gradient(180deg,rgba(21,34,49,.92),rgba(15,24,34,.92));
  border:1px solid var(--border);border-radius:12px;padding:18px 20px;margin-bottom:16px;
  box-shadow:0 1px 0 rgba(255,255,255,.03), 0 12px 30px rgba(0,0,0,.22)}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.stats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));margin-bottom:8px}
.stat{background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:14px;
  border-left:3px solid var(--accent-dim)}
.stat .num{font-size:26px;font-weight:700;font-family:var(--mono);color:var(--accent)}
.stat .lbl{color:var(--muted);font-size:12px}

.progress{height:6px;background:var(--panel2);border-radius:99px;overflow:hidden;margin-top:8px}
.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent-dim),var(--accent))}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:top}
th{color:var(--muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.9px;
  font-family:var(--mono);font-weight:600;white-space:nowrap}
tbody tr:hover{background:rgba(34,211,238,.05)}

.badge{display:inline-block;padding:2px 9px;border-radius:6px;font-size:11.5px;font-weight:600;
  font-family:var(--mono);letter-spacing:.2px;border:1px solid transparent}
.badge.locked{background:#2b3542;color:#8a9aab}
.badge.available{background:rgba(61,169,252,.15);color:#7cc4ff}
.badge.check_passed,.badge.submitted,.badge.pending{background:rgba(240,180,41,.15);color:var(--warn)}
.badge.accepted,.badge.closed{background:rgba(46,204,113,.15);color:var(--ok)}
.badge.rejected,.badge.not_done{background:rgba(231,76,60,.15);color:var(--err)}
.badge.open{background:rgba(61,169,252,.15);color:#7cc4ff}

label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
label.check{display:flex;gap:8px;align-items:center;color:var(--text);margin-bottom:14px}
input[type=text],input[type=password],input[type=number],input[type=email],input[type=file],textarea,select{
  width:100%;padding:9px 11px;background:var(--panel2);border:1px solid var(--border);
  border-radius:8px;color:var(--text);font-size:14px;font-family:inherit}
textarea{min-height:90px;resize:vertical}
input:focus,textarea:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px;
  box-shadow:0 0 0 3px rgba(34,211,238,.12)}
input[type=text],input[type=number],select{font-family:var(--mono);font-size:13px}

button,.btn{display:inline-block;padding:8px 15px;border-radius:8px;border:1px solid transparent;
  background:linear-gradient(180deg,var(--accent),#0ea5b7);color:#04222a;font-weight:700;font-size:13.5px;
  cursor:pointer;font-family:var(--mono);letter-spacing:.2px}
button:hover,.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn-ghost{background:transparent;border-color:var(--border);color:#b7c9da;font-weight:600}
.btn-ghost:hover{border-color:var(--accent-dim);color:var(--accent)}
.btn-ok{background:var(--ok);color:#06170d}
.btn-err{background:var(--err);color:#fff}
.btn-sm{padding:6px 11px;font-size:13px}
.form-row{margin-bottom:14px}
.form-inline{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin-bottom:12px}
.row-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.row-actions form{margin:0}

.flash{padding:11px 14px;border-radius:8px;margin-bottom:14px;font-size:14px}
.flash.error{background:rgba(231,76,60,.12);border:1px solid rgba(231,76,60,.5);color:#ffb3ab}
.flash.ok{background:rgba(46,204,113,.12);border:1px solid rgba(46,204,113,.45);color:#a7f3c8}
.flash.info{background:rgba(61,169,252,.12);border:1px solid rgba(61,169,252,.45);color:#b9dcff}
.auth-box{max-width:420px;margin:60px auto}
.auth-box h1::after{display:none}
.auth-box .card{border-top:2px solid var(--accent-dim)}

/* ---------- ПРЕЗЕНТАЦИЯ ---------- */
.viewer{background:#0a0f15;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:10px}
.viewer-top{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--panel2);
  border-bottom:1px solid var(--border)}
.viewer-title{flex:1;text-align:center;font-size:13px;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-btn{background:rgba(255,255,255,.06);border:1px solid var(--border);color:var(--text);
  width:34px;height:34px;border-radius:8px;font-size:20px;line-height:1;padding:0;cursor:pointer}
.nav-btn:disabled{opacity:.3;cursor:default}
.slide-stage{position:relative;min-height:260px;display:flex;align-items:center;justify-content:center;
  background:#0a0f15}
.slide-stage img{max-width:100%;max-height:76vh;display:block;user-select:none;-webkit-user-drag:none}
.slide-loader{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:13px;background:rgba(10,15,21,.8)}
.slide-loader[hidden]{display:none}
.viewer-bottom{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--panel2);
  border-top:1px solid var(--border)}
.dots{display:flex;gap:5px;flex-wrap:wrap;flex:1}
.dot{width:7px;height:7px;border-radius:50%;background:#31414f;cursor:pointer;border:0;padding:0}
.dot.active{background:var(--accent)}
.slide-counter{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- СДАЧА И ФОТО ---------- */
.actions-card .row-actions{gap:10px}
.thumbs{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.thumb{font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:3px 8px}
.gallery{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));margin:14px 0}
.shot{border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#0a0f15;
  display:block;aspect-ratio:4/3}
.shot img{width:100%;height:100%;object-fit:cover;display:block}
.sub-head{display:flex;gap:12px;justify-content:space-between;align-items:flex-start;flex-wrap:wrap}
.review{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin-top:12px;
  padding-top:12px;border-top:1px solid var(--border)}
.task-head{display:flex;gap:12px;justify-content:space-between;align-items:flex-start;flex-wrap:wrap}
.ticket-text{background:var(--panel2);border-radius:8px;padding:12px;white-space:pre-wrap;margin:10px 0}

/* ---------- МОДАЛЬНОЕ ОКНО ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(4,8,12,.72);display:none;
  align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-backdrop.open{display:flex}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;
  padding:22px;max-width:520px;width:100%;max-height:88vh;overflow:auto;
  box-shadow:0 20px 60px rgba(0,0,0,.5)}
.modal h3{margin-bottom:6px}

.backbar { margin: 0 0 12px; }

/* ---------- СЕТЕВОЙ АКЦЕНТ: шапка, группы, ведомость ---------- */
.tag{display:inline-block;font-family:var(--mono);font-size:11px;padding:1px 7px;
  border:1px solid var(--border);border-radius:5px;color:var(--muted)}
.tag.net{border-color:rgba(34,211,238,.4);color:var(--accent);background:rgba(34,211,238,.07)}
.tag.grp{border-color:rgba(124,92,255,.4);color:#b9a8ff;background:rgba(124,92,255,.08)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:0 0 12px}
.legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:middle}
.legend .l-ok i{background:var(--ok)} .legend .l-wait i{background:var(--warn)}
.legend .l-lock i{background:#3a4a5c} .legend .l-off i{background:var(--err)}

/* видимость полей аудитории управляется static/js/audience.js */
.aud-group,.aud-student{display:none}