/* ============================================================
   Lavrentev Cabinet — светлая тема (полная сборка)
   ============================================================ */
:root{
  --bg:#f7f8fa;
  --surface:#ffffff;
  --ink:#1a1d24;
  --muted:#6b7280;
  --border:#e6e8ec;
  --accent:#4f7cff;
  --accent-soft:#eef2ff;
  --green:#22c55e;
  --red:#ef4444;
  --amber:#f59e0b;
  --radius:14px;
  --shadow:0 1px 3px rgba(16,24,40,.06),0 1px 2px rgba(16,24,40,.04);
  --shadow-lg:0 10px 30px rgba(16,24,40,.10);
  --sidebar-w:248px;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

/* ---------- layout ---------- */
.app{display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar-w);flex-shrink:0;background:var(--surface);
  border-right:1px solid var(--border);display:flex;flex-direction:column;
  position:fixed;top:0;bottom:0;left:0;z-index:40;
}
.sidebar__logo{display:flex;align-items:center;gap:10px;padding:20px 22px;font-weight:700;font-size:18px;border-bottom:1px solid var(--border)}
.sidebar__logo img{height:30px;width:auto}
.sidebar__nav{flex:1;padding:12px 12px;display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;color:var(--muted);font-weight:500;font-size:15px;transition:background .15s,color .15s}
.nav-item:hover{background:var(--bg);color:var(--ink)}
.nav-item.is-active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav-item__icon{width:22px;text-align:center;font-size:16px}
.sidebar__foot{padding:16px 22px;border-top:1px solid var(--border)}
.sidebar__user{font-weight:600;font-size:14px;margin-bottom:4px}
.sidebar__logout{font-size:13px;color:var(--muted)}
.sidebar__logout:hover{color:var(--red)}

.content{flex:1;margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;gap:14px;padding:18px 32px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}
.topbar__title{font-size:20px;font-weight:700}
.topbar__burger{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--ink)}
.page{padding:32px;flex:1}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h2{font-size:18px;margin-bottom:8px}
.card h3{font-size:15px;font-weight:700;margin-bottom:14px}
.muted{color:var(--muted)}
.small{font-size:12px}
.section-title{font-size:20px;font-weight:800;margin-bottom:6px}
.card-head-row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.card-head-row h3,.card-head-row h2{margin-bottom:0}

/* ---------- dashboard ---------- */
.dash-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.widget__head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.widget__icon{width:34px;height:34px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);border-radius:9px;font-size:16px}
.widget h3{font-size:15px;font-weight:600}
.widget__link{display:inline-block;margin-top:14px;font-size:13px;color:var(--accent);font-weight:600}
.stat-big{font-size:34px;font-weight:800;letter-spacing:-.5px}
.widget--stat .stat-big{margin:4px 0}
.lesson-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.lesson-list li{display:flex;align-items:center;gap:10px;font-size:14px}
.lesson-list b{min-width:42px}
.dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.task-mini{list-style:none;display:flex;flex-direction:column;gap:9px}
.task-mini li{display:flex;align-items:center;gap:10px;font-size:14px}
.task-mini .check{width:16px;height:16px;border:2px solid var(--border);border-radius:5px;flex-shrink:0}

/* ---------- badges ---------- */
.badge{font-size:11px;padding:2px 9px;border-radius:999px;font-weight:600}
.badge--planned{background:#eef2ff;color:#4f7cff}
.badge--done{background:#ecfdf3;color:#16a34a}
.badge--cancelled{background:#fef2f2;color:#dc2626}
.badge--moved{background:#fffbeb;color:#d97706}
.badge--lvl{background:#f3f4f6;color:#374151}
.badge--muted{background:#f3f4f6;color:#9ca3af}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--ink);font-weight:600;font-size:14px;cursor:pointer;transition:all .15s;font-family:inherit}
.btn:hover{background:var(--bg)}
.btn--primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn--primary:hover{background:#3d68f0}
.btn--full{width:100%}
.btn--sm{padding:7px 13px;font-size:13px;border-radius:9px}
.btn--danger{background:#fef2f2;color:#dc2626;border-color:#fee2e2}
.btn--danger:hover{background:#fee2e2}
.btn--plus{background:#ecfdf3;color:#16a34a;border-color:#d1fae5}
.btn--minus{background:#fef2f2;color:#dc2626;border-color:#fee2e2}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.inline{display:inline}
.inline-form{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.input-sm{padding:9px 12px;border:1px solid var(--border);border-radius:9px;font-size:14px;width:120px;font-family:inherit}
.input-md{padding:9px 12px;border:1px solid var(--border);border-radius:9px;font-size:14px;min-width:200px;font-family:inherit}
.btn-icon{background:none;border:none;color:var(--muted);cursor:pointer;font-size:15px;padding:4px 8px;border-radius:6px;font-family:inherit}
.btn-icon:hover{background:#fef2f2;color:var(--red)}

/* ---------- login ---------- */
.login-body{display:grid;place-items:center;min-height:100vh;background:linear-gradient(135deg,#eef2ff,#f7f8fa)}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:44px 38px;width:100%;max-width:380px;box-shadow:var(--shadow-lg);text-align:center}
.login-logo img{height:46px;margin-bottom:18px}
.login-title{font-size:24px;font-weight:800}
.login-sub{color:var(--muted);font-size:14px;margin-bottom:26px}
.login-form{display:flex;flex-direction:column;gap:16px;text-align:left}
.login-form label{font-size:13px;font-weight:600;color:var(--muted);display:flex;flex-direction:column;gap:6px}
.login-form input{padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;color:var(--ink);transition:border .15s;font-family:inherit}
.login-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.login-error{background:#fef2f2;color:#dc2626;padding:10px 14px;border-radius:10px;font-size:14px;margin-bottom:16px}

/* ---------- crumbs / toolbar / tabs ---------- */
.crumbs{font-size:14px;color:var(--muted);margin-bottom:16px}
.crumbs a:hover{color:var(--accent)}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.toolbar__search{display:flex;gap:8px;flex:1;max-width:460px}
.toolbar__search input{flex:1;padding:10px 14px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit}
.toolbar__search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.tab{padding:10px 16px;font-size:14px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tab:hover{color:var(--ink)}
.tab.is-active{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- students ---------- */
.students-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.student-card{display:flex;flex-direction:column;justify-content:space-between;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:box-shadow .15s,transform .15s;min-height:120px}
.student-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.student-card__top{display:flex;gap:14px;align-items:flex-start}
.student-card__name{font-weight:700;font-size:16px;line-height:1.3}
.student-card__meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.student-card__bottom{display:flex;justify-content:space-between;align-items:center;margin-top:14px}
.avatar{width:44px;height:44px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px}
.avatar--lg{width:64px;height:64px;border-radius:16px;font-size:26px}
.avatar--sm{width:34px;height:34px;border-radius:9px;font-size:14px;display:inline-grid;place-items:center}
.balance{font-weight:700;font-size:15px}
.balance--empty{color:var(--red)}
.balance-big{font-size:40px;font-weight:800;letter-spacing:-1px;margin:6px 0 16px}

/* ---------- profile ---------- */
.profile-head{display:flex;gap:20px;align-items:flex-start;margin-bottom:20px;flex-wrap:wrap}
.profile-head__info{flex:1;min-width:200px}
.profile-head__info h2{font-size:22px;margin-bottom:8px}
.profile-head__meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.profile-head__actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* три равные колонки */
.profile-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;align-items:stretch;margin-bottom:20px}
.profile-grid > .card{display:flex;flex-direction:column}
.profile-grid__fill{flex:1}
.mini-h{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;margin-bottom:4px}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.two-col > div{display:flex;flex-direction:column;gap:20px}

/* ---------- forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.field--wide{grid-column:1/-1}
.field__label{font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field select,.field textarea{padding:11px 13px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;color:var(--ink);width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.form-actions{display:flex;gap:10px;margin-top:20px}
.color-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.color-dot{width:30px;height:30px;border-radius:9px;cursor:pointer;display:grid;place-items:center;position:relative}
.color-dot input{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer}
.color-dot:has(input:checked){outline:3px solid var(--accent);outline-offset:2px}
.color-custom{width:44px;height:30px;border:1px solid var(--border);border-radius:9px;cursor:pointer;padding:2px}
.checkbox-field{flex-direction:row;align-items:center;gap:10px}
.checkbox-field input{width:auto}
.checkbox-field span{font-weight:600;color:var(--ink)}

/* ---------- tables ---------- */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;padding:10px 12px;border-bottom:2px solid var(--border);font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.table td{padding:11px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
.table tr:last-child td{border-bottom:none}

/* ---------- history / mini lists ---------- */
.history{margin-top:16px}
.history summary{cursor:pointer;font-size:13px;font-weight:600;color:var(--accent);padding:6px 0}
.mini-list{list-style:none;margin-top:10px;display:flex;flex-direction:column;gap:8px}
.mini-list li{display:flex;gap:10px;align-items:center;font-size:13px;padding:6px 0;border-bottom:1px solid var(--border)}
.mini-list .right{margin-left:auto}
.delta--plus{color:var(--green);font-weight:700;min-width:44px}
.delta--minus{color:var(--red);font-weight:700;min-width:44px}

/* ---------- statistics ---------- */
.stat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px;margin-bottom:20px}
.stat-card{display:flex;flex-direction:column;gap:6px;text-align:center;padding:18px}
.stat-card b{font-size:30px;font-weight:800}
.avg-list{display:flex;flex-direction:column;gap:14px}
.avg-row{display:grid;grid-template-columns:140px 1fr 48px;gap:12px;align-items:center;font-size:14px}
.avg-row__name{color:var(--muted)}
.avg-row__val{font-weight:700;text-align:right}
.avg-bar{height:8px;background:var(--bg);border-radius:99px;overflow:hidden}
.avg-bar i{display:block;height:100%;background:var(--accent);border-radius:99px}
.topic-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.topic-list li{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border);font-size:14px}
.topic-list li:last-child{border-bottom:none}
.topic-list b{color:var(--accent)}
.topic-stat-list{display:flex;flex-direction:column;gap:14px}
.topic-stat__top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:14px}
.topic-stat__top b{font-weight:800}
.sbar{display:inline-block;width:100%;height:8px;background:var(--bg);border-radius:99px;overflow:hidden}
.sbar i{display:block;height:100%;border-radius:99px}
.spark{display:block}

/* ---------- words ---------- */
.word-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.word-chip{display:inline-flex;align-items:center;gap:5px;background:var(--accent-soft);color:var(--accent);padding:6px 12px;border-radius:99px;font-size:14px;font-weight:600}
.word-chip i{font-style:normal;font-size:11px;background:var(--accent);color:#fff;border-radius:99px;padding:1px 6px;font-weight:700}

/* ---------- tariffs / settings ---------- */
.tariff-card{margin-bottom:20px}
.tariff-card__head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.price-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}
.topic-edit-list{display:flex;flex-direction:column;gap:8px}
.topic-edit-row{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--border)}
.topic-edit-row:last-child{border-bottom:none}

/* ---------- lessons strip ---------- */
.lessons-section{margin-top:0}
.lessons-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.lesson-strip{display:flex;flex-direction:column;gap:10px}
.lesson-panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;border-left:4px solid var(--border)}
.lesson-panel--planned{border-left-color:var(--accent)}
.lesson-panel--done{border-left-color:var(--green)}
.lesson-panel--moved{border-left-color:var(--amber)}
.lesson-panel--cancelled{border-left-color:var(--red)}
.lesson-panel__head{display:flex;align-items:center;gap:14px;padding:14px 18px;cursor:pointer;list-style:none;user-select:none}
.lesson-panel__head::-webkit-details-marker{display:none}
.lesson-panel__head:hover{background:var(--bg)}
.lesson-panel__date{display:flex;flex-direction:column;align-items:center;min-width:48px;line-height:1.1}
.lesson-panel__date b{font-size:15px}
.lesson-panel__date i{font-style:normal;font-size:12px;color:var(--muted)}
.lesson-panel__title{flex:1;font-weight:600;font-size:15px}
.lesson-panel__badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.lesson-panel__body{padding:4px 18px 20px;border-top:1px solid var(--border)}
.lesson-statusbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding:14px 0}
.status-btn.is-current{background:var(--accent);color:#fff;border-color:var(--accent)}
.status-current{font-size:14px;color:var(--muted)}
.status-current b{color:var(--ink)}
.mat-flag{font-size:12px;font-weight:600;color:var(--muted);background:var(--bg);padding:3px 9px;border-radius:99px;white-space:nowrap}
.mat-flag.is-ready{color:#16a34a;background:#ecfdf3}
.dot-ready{width:10px;height:10px;border-radius:50%;background:#e5e7eb;display:inline-block;border:1px solid #d1d5db}
.dot-ready.is-ready{background:var(--green);border-color:var(--green)}

/* report blocks */
.report-block{padding:16px 0;border-bottom:1px solid var(--border)}
.report-block:last-of-type{border-bottom:none}
.report-block h4{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--ink)}
.focus-row{display:flex;gap:10px;flex-wrap:wrap}
.focus-chip{display:flex;flex-direction:column;align-items:center;gap:2px;border:1px solid var(--border);border-radius:10px;padding:8px 14px;cursor:pointer;min-width:64px;transition:all .15s}
.focus-chip span{font-weight:800;font-size:16px}
.focus-chip i{font-style:normal;font-size:10px;color:var(--muted)}
.focus-chip input{display:none}
.focus-chip:has(input:checked){border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.focus-chip:has(input:checked) i{color:var(--accent)}
.scores-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}
.score-input{text-align:center;font-weight:700}

/* компактная сводка отчёта */
.report-summary{padding:16px 0 6px}
.report-summary__row{display:flex;flex-wrap:wrap;gap:18px;align-items:center;font-size:14px;margin-bottom:10px}
.report-summary__row > div{display:flex;flex-direction:column;gap:2px}
.report-summary__row .lbl{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.report-summary__actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.readonly-block{padding:12px 0;border-bottom:1px solid var(--border);font-size:14px}
.readonly-block:last-child{border-bottom:none}
.readonly-block .lbl{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);display:block;margin-bottom:4px}

/* materials */
.materials-block{padding-top:16px;border-top:1px solid var(--border);margin-top:4px}
.materials-block h4{font-size:14px;font-weight:700;margin-bottom:10px}
.materials-grid{display:flex;flex-wrap:wrap;gap:10px}
.material-item{position:relative;width:110px}
.material-item img{width:110px;height:110px;object-fit:cover;border-radius:10px;border:1px solid var(--border)}
.material-file{display:flex;align-items:center;justify-content:center;width:110px;height:110px;border:1px dashed var(--border);border-radius:10px;font-size:12px;text-align:center;padding:8px;color:var(--muted)}
.material-del{position:absolute;top:4px;right:4px}
.material-del .btn-icon{background:rgba(255,255,255,.92);border-radius:6px}
.file-input{font-size:13px}
.mat-upload-status{font-weight:600}

/* галерея (раздел «Материалы») */
.materials-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:14px;margin-top:6px}
.gallery-item{display:flex;flex-direction:column;gap:6px}
.gallery-thumb{display:block;width:100%;aspect-ratio:1;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg);transition:box-shadow .15s}
.gallery-thumb:hover{box-shadow:var(--shadow-lg)}
.gallery-thumb img{width:100%;height:100%;object-fit:cover}
.gallery-thumb--file{display:grid;place-items:center;font-size:34px}
.gallery-meta{display:flex;justify-content:space-between;align-items:center;gap:6px}
.gallery-link{font-size:12px;color:var(--accent);font-weight:600}

/* подменю «Уроки» */
.les-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
.les-sum-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;text-align:center;display:flex;flex-direction:column;gap:6px}
.les-sum-card b{font-size:30px;font-weight:800}
.les-sum-card--warn{border-color:#fecaca;background:#fff7f7}
.les-sum-card--warn b{color:var(--red)}
.les-list{display:flex;flex-direction:column;gap:6px}
.les-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;transition:background .15s}
.les-row:hover{background:var(--bg)}
.les-row__time{font-weight:700;font-size:14px;min-width:42px;color:var(--muted)}
.les-row__main{flex:1;display:flex;flex-direction:column;line-height:1.2;min-width:0}
.les-row__tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ---------- dialog ---------- */
.dlg{border:none;border-radius:18px;padding:0;box-shadow:var(--shadow-lg);width:100%;max-width:460px;background:var(--surface)}
.dlg::backdrop{background:rgba(0,0,0,.35)}
.dlg__head{display:flex;justify-content:space-between;align-items:center;padding:20px 24px 0}
.dlg__head h3{font-size:17px;font-weight:700}
.dlg form{display:flex;flex-direction:column;gap:14px;padding:16px 24px 0}
.dlg__foot{display:flex;justify-content:flex-end;gap:10px;padding:16px 0 4px}

/* ---------- адаптив ---------- */
@media(max-width:1100px){
  .profile-grid{grid-template-columns:1fr 1fr}
  .profile-grid > .card:first-child{grid-column:1/-1}
}
@media(max-width:860px){
  .two-col{grid-template-columns:1fr}
  .profile-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .les-summary{grid-template-columns:repeat(3,1fr)}
  .sidebar{transform:translateX(-100%);transition:transform .25s}
  .sidebar.is-open{transform:translateX(0);box-shadow:var(--shadow-lg)}
  .content{margin-left:0}
  .topbar__burger{display:block}
  .page{padding:20px}
  .dlg{max-width:calc(100vw - 32px)}
}

/* ============================================================
   ЭТАП 4: Календарь / Расписание
   ============================================================ */
.cal-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.cal-nav{display:flex;align-items:center;gap:8px}
.cal-range{font-weight:700;font-size:16px;margin-left:10px}
.cal-tools{display:flex;align-items:center;gap:10px}

.cal-week{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.cal-head{display:grid;grid-template-columns:60px repeat(7,1fr);border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:5}
.cal-gutter{}
.cal-dayhead{display:flex;flex-direction:column;align-items:center;padding:10px 4px;gap:1px;border-left:1px solid var(--border)}
.cal-dayhead.is-today{background:var(--accent-soft)}
.cal-dayname{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);font-weight:700}
.cal-daynum{font-size:19px;font-weight:800;line-height:1.1}
.cal-dayhead.is-today .cal-daynum{color:var(--accent)}
.cal-month{font-size:10px;color:var(--muted)}

.cal-body{display:grid;grid-template-columns:60px repeat(7,1fr);position:relative;max-height:calc(100vh - 210px);overflow-y:auto}
.cal-hours{display:flex;flex-direction:column}
.cal-hour{height:56px;position:relative}
.cal-hour span{position:absolute;top:-7px;right:8px;font-size:11px;color:var(--muted);font-weight:600}
.cal-hour::after{content:'';position:absolute;left:0;right:0;bottom:0;border-bottom:1px solid #f1f3f6}

.cal-day{position:relative;border-left:1px solid var(--border);cursor:pointer}
.cal-day.is-today{background:rgba(79,124,255,.025)}
.cal-slot{height:56px;border-bottom:1px solid #f1f3f6}
.cal-day:hover .cal-slot{border-bottom-color:#e9ecf1}

.cal-event{position:absolute;background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:8px;padding:4px 6px;font-size:11px;line-height:1.25;overflow:hidden;cursor:pointer;box-shadow:0 1px 2px rgba(16,24,40,.06);transition:box-shadow .12s,transform .12s;display:flex;flex-direction:column;gap:1px}
.cal-event:hover{box-shadow:var(--shadow-lg);transform:scale(1.02);z-index:3}
.cal-event--done{background:#f6fdf9}
.cal-event--cancelled{opacity:.55;text-decoration:line-through}
.cal-event--moved{background:#fffbf2}
.cal-event__time{font-weight:800;color:var(--accent);font-size:10px}
.cal-event--done .cal-event__time{color:#16a34a}
.cal-event__name{font-weight:700;font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cal-event__title{color:var(--muted);font-size:10.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cal-event__marks{display:flex;gap:4px;margin-top:auto}
.cal-event__marks i{width:6px;height:6px;border-radius:50%;display:inline-block}
.mk-ready{background:var(--green)}
.mk-nomat{background:#cbd5e1}
.mk-warn{background:var(--amber)}

/* попап */
.cal-popup{position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:200;align-items:center;justify-content:center;padding:16px}
.cal-popup__box{background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);width:100%;max-width:420px;max-height:88vh;display:flex;flex-direction:column;overflow:hidden}
.cal-popup__head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px 12px;border-bottom:1px solid var(--border)}
.cal-popup__head h3{font-size:17px}
.cal-popup__body{padding:14px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}
.cp-row{display:flex;gap:10px;font-size:13.5px;align-items:baseline}
.cp-row .muted{min-width:88px;font-size:12px;flex-shrink:0}
.cp-row b{font-weight:600;word-break:break-word}
.cal-popup__foot{display:flex;gap:8px;flex-wrap:wrap;padding:14px 20px 18px;border-top:1px solid var(--border)}

/* мобильный вид */
.cal-mobile{display:none}
.cal-mday{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin-bottom:10px;box-shadow:var(--shadow)}
.cal-mday.is-today{border-color:var(--accent)}
.cal-mday__head{font-size:14px;margin-bottom:8px;display:flex;gap:8px;align-items:center}
.cal-mrow{display:flex;align-items:center;gap:10px;padding:8px 4px;border-radius:8px;cursor:pointer}
.cal-mrow:hover{background:var(--bg)}
.cal-mtime{font-weight:700;font-size:13px;color:var(--muted);min-width:42px}
.cal-mdot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.cal-mmain{flex:1;display:flex;flex-direction:column;line-height:1.2;min-width:0}

@media(max-width:860px){
  .cal-week{display:none}
  .cal-mobile{display:block}
}

/* подсказки прошлых оценок в отчёте */
.score-hint{font-size:11px;font-weight:600;line-height:1.3;display:block;margin-top:2px}
.score-hint.is-up{color:#16a34a}
.score-hint.is-down{color:#dc2626}
.score-hint.is-same{color:#6b7280}

/* ============================================================
   Волна 1: шкала уровней, ссылки студента, кружок в календаре
   ============================================================ */

/* шкала A1..C2 над графиком навыков */
.avg-row--scale{align-items:end;margin-bottom:4px}
.avg-row--scale > span{display:block}
.skill-scale{display:flex;justify-content:space-between;position:relative;padding-bottom:6px;border-bottom:1px dashed var(--border)}
.skill-scale__mark{font-size:10px;font-weight:700;color:var(--muted);letter-spacing:.3px}
.avg-row--scale:nth-child(1){margin-top:0}

/* ссылки в карточке студента */
.links-list{display:flex;flex-direction:column;gap:6px}
.link-item{font-size:13px;color:var(--accent);font-weight:600;word-break:break-all;line-height:1.35;padding:4px 0;border-bottom:1px solid var(--border)}
.link-item:last-child{border-bottom:none}
.link-item:hover{text-decoration:underline}

/* кружок статуса — в правый верхний угол, не срезает текст */
.cal-event{padding-right:14px;padding-top:3px}
.cal-event__marks{position:absolute;top:4px;right:5px;margin-top:0;display:flex;gap:3px;line-height:0}
.cal-event__marks i{width:7px;height:7px}
.cal-event__name{line-height:1.15}
.cal-event__time{line-height:1.1}

/* ============================================================
   Волна 2: группы уроков (сворачивание)
   ============================================================ */
.lessons-group{display:flex;flex-direction:column;gap:10px}
.lessons-group__items{display:flex;flex-direction:column;gap:10px}
/* hidden должен побеждать display:flex, иначе блок не скрывается */
.lessons-group__items[hidden]{display:none !important}
/* группы на нативном <details> — скрытие работает без JS */
details.lessons-group > summary.lessons-group__toggle{
  list-style:none;cursor:pointer;user-select:none;
}
details.lessons-group > summary.lessons-group__toggle::-webkit-details-marker{display:none}
details.lessons-group > summary.lessons-group__toggle::marker{content:''}
.lessons-group__toggle{
  width:100%;padding:11px 16px;border:1px dashed var(--border);background:transparent;
  border-radius:10px;color:var(--muted);font-weight:600;font-size:13px;font-family:inherit;
  cursor:pointer;transition:all .15s;text-align:center;
}
.lessons-group__toggle:hover{background:var(--bg);color:var(--accent);border-color:var(--accent)}