/* ============================================================
   admin-ui.css — дополнения боевой админки /admin
   (то, чего не было в макете v2-dashboard: модалки, тосты,
   состояния загрузки/ошибки/пустоты, тулбар фильтров, свитчи,
   экран входа). Базовая тема — в css/admin.css.
   ============================================================ */

.btn:disabled,.ni:disabled,.grp:disabled,.seg-i:disabled,.tab:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}
.btn.busy{position:relative;color:transparent!important;pointer-events:none}
.btn.busy::after{content:"";position:absolute;inset:0;margin:auto;width:14px;height:14px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
.btn:not(.btn-primary):not(.btn-danger).busy::after{border-color:rgba(59,130,246,.3);border-top-color:var(--ac)}
@keyframes spin{to{transform:rotate(360deg)}}
:focus-visible{outline:2px solid var(--ac);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* --- загрузка / ошибка / пустота --- */
.spin-wrap{display:grid;place-items:center;gap:12px;padding:56px 20px;color:var(--dim2);font-size:13px}
.spin{width:26px;height:26px;border:3px solid var(--line);border-top-color:var(--ac);border-radius:50%;animation:spin .8s linear infinite}
.skel{background:linear-gradient(90deg,#eef1f7 25%,#f7f9fc 37%,#eef1f7 63%);background-size:400% 100%;animation:sk 1.3s ease infinite;border-radius:8px;height:14px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.empty{display:grid;place-items:center;gap:8px;padding:44px 20px;text-align:center;color:var(--dim2)}
.empty b{font-size:15px;color:var(--dim);font-weight:600}
.empty .ico{font-size:30px;opacity:.55}
.err-box{background:#fff5f5;border:1px solid #f6c9c9;border-left:3px solid var(--bad);border-radius:var(--r);padding:14px 16px;color:#8f1d1d;font-size:13px;line-height:1.6;display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}
.err-box code{font:11.5px var(--mono);background:rgba(180,35,24,.09);padding:1px 6px;border-radius:5px}
.err-box .btn{margin-left:auto}

/* --- тулбар фильтров --- */
.toolbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.toolbar .inp{width:auto;min-width:130px}
.toolbar .grow{flex:1;min-width:190px}
.toolbar .sp{margin-left:auto}
.fld-hint{font-size:11.5px;color:var(--dim2);line-height:1.5}
.fld-err{font-size:11.5px;color:#b42318;line-height:1.5}
.inp.bad{border-color:#ef9a9a;background:#fffafa}

/* --- тосты --- */
.toasts{position:fixed;right:18px;bottom:18px;z-index:120;display:flex;flex-direction:column;gap:9px;max-width:min(420px,calc(100vw - 36px))}
.toast{background:#101828;color:#fff;border-radius:12px;padding:12px 15px;font-size:13px;line-height:1.5;box-shadow:0 10px 30px rgba(16,24,40,.28);display:flex;gap:10px;align-items:flex-start;animation:tin .22s ease}
.toast .ti{flex:none}
.toast.ok{background:#0b6b45}
.toast.bad{background:#991b1b}
.toast.warn{background:#8a5a06}
.toast code{font:11.5px var(--mono);opacity:.85}
@keyframes tin{from{opacity:0;transform:translateY(8px)}}

/* --- модалки --- */
.bd{position:fixed;inset:0;z-index:100;background:rgba(11,18,32,.5);backdrop-filter:blur(3px);display:flex;align-items:flex-start;justify-content:center;padding:34px 16px;overflow-y:auto;animation:fin .16s ease}
@keyframes fin{from{opacity:0}}
.modal{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 70px rgba(11,18,32,.34);width:100%;max-width:640px;animation:min .2s cubic-bezier(.2,.9,.3,1)}
@keyframes min{from{opacity:0;transform:translateY(14px) scale(.985)}}
.modal.wide{max-width:920px}
.modal.narrow{max-width:460px}
.modal-h{display:flex;align-items:flex-start;gap:14px;padding:18px 20px 14px;border-bottom:1px solid var(--line)}
.modal-h h3{font-size:17px}
.modal-h p{margin:4px 0 0;font-size:12.5px;color:var(--dim)}
.modal-x{margin-left:auto;background:none;border:0;color:var(--dim2);font-size:20px;line-height:1;cursor:pointer;padding:2px 6px;border-radius:8px}
.modal-x:hover{background:var(--panel2);color:var(--bad)}
.modal-b{padding:18px 20px;max-height:min(66vh,660px);overflow-y:auto}
.modal-f{display:flex;gap:9px;justify-content:flex-end;flex-wrap:wrap;padding:14px 20px 18px;border-top:1px solid var(--line);background:var(--panel2);border-radius:0 0 18px 18px}
.modal-f .sp{margin-right:auto;font-size:12px;color:var(--dim2);align-self:center}
@media(max-width:600px){.bd{padding:0}.modal{max-width:none;border-radius:0;min-height:100vh}.modal-b{max-height:none}.modal-f{position:sticky;bottom:0}}

/* --- внутренние вкладки раздела --- */
.tabs{display:flex;gap:5px;flex-wrap:wrap;background:var(--panel2);border:1px solid var(--line);border-radius:11px;padding:4px;margin-bottom:16px;width:fit-content;max-width:100%;overflow-x:auto}
.tab{background:none;border:0;color:var(--dim);font:600 12.5px inherit;padding:6px 13px;border-radius:8px;cursor:pointer;white-space:nowrap;display:inline-flex;gap:7px;align-items:center}
.tab:hover{color:var(--tx);background:#fff}
.tab.on{background:#fff;color:var(--ac2);box-shadow:var(--sh)}
.tab .cnt{font:10.5px var(--mono);padding:1px 6px;border-radius:20px;background:var(--line);color:var(--dim)}
.tab.on .cnt{background:rgba(59,130,246,.13);color:var(--ac2)}

/* --- таблица: действия, сортировка, подвал --- */
.tbl .acts{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.tbl td.acts-cell{white-space:nowrap}
.tbl tfoot td{padding:11px 14px;background:var(--panel2);border-top:1px solid var(--line);font-size:12px;color:var(--dim)}
.tbl .truncate{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}
.tbl-sort{cursor:pointer;user-select:none}
.tbl-sort:hover{color:var(--ac2)}
.tbl-sort .ar{font-size:9px;opacity:.75}
.row-sel{background:#eaf2ff!important}

/* --- переключатель (switch) --- */
.sw{position:relative;display:inline-flex;align-items:center;gap:11px;cursor:pointer;font-size:13.5px}
.sw input{position:absolute;opacity:0;width:0;height:0}
.sw .tr{width:42px;height:24px;border-radius:20px;background:var(--line2);transition:.18s;flex:none;position:relative}
.sw .tr::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(16,24,40,.3);transition:.18s}
.sw input:checked+.tr{background:var(--ac)}
.sw input:checked+.tr::after{transform:translateX(18px)}
.sw input:focus-visible+.tr{box-shadow:0 0 0 3px rgba(59,130,246,.28)}
.sw input:disabled+.tr{opacity:.45;cursor:not-allowed}

/* --- экран входа / нет доступа --- */
.gate{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--bg)}
.gate-c{background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh2);padding:34px 32px;max-width:430px;width:100%;text-align:center}
.gate-c .lg{width:56px;height:56px;border-radius:18px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);display:grid;place-items:center;font-size:26px;margin:0 auto 16px;box-shadow:0 8px 22px rgba(59,130,246,.3)}
.gate-c h1{font-size:21px;margin-bottom:8px}
.gate-c p{margin:0 0 20px;font-size:13.5px;color:var(--dim);line-height:1.65}
.gate-c .btn{width:100%;justify-content:center}
.gate-c .sm{margin-top:16px;color:var(--dim2)}

/* --- прочее --- */
.mono{font-family:var(--mono)}
.pre{font:12px/1.6 var(--mono);background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;overflow-x:auto;white-space:pre-wrap;word-break:break-word;color:#2a3648}
.foot-note{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:11.5px;color:var(--dim2);line-height:1.7}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
@media(max-width:900px){.split{grid-template-columns:1fr}}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.diff-easy{color:#0a7d4f}.diff-medium{color:#96690a}.diff-hard{color:#b42318}
mark.hl{background:#fff3cd;border-radius:3px;padding:0 2px}

/* --- редактор вариантов ответа (page-content.js) --- */
.opt-row{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.opt-row>input[type=radio]{width:18px;height:18px;flex:none;cursor:pointer;accent-color:var(--ac)}
.opt-row .inp{flex:1}
.opt-row .oi{font:600 11.5px var(--mono);color:var(--dim2);width:22px;flex:none;text-align:right}
.err-slot:empty{display:none}

/* ============================================================
   Тёмные темы (09.10.2026): оверрайды цветов, захардкоженных
   в admin-ui.css. Палитры переменных — в admin.css (dark-a/b/c).
   ============================================================ */
html[data-theme^="dark"] .skel{background:linear-gradient(90deg,#1a2233 25%,#232d44 37%,#1a2233 63%);background-size:400% 100%}
html[data-theme^="dark"] .err-box{background:#2b1515;border-color:#5c2727;color:#fca5a5}
html[data-theme^="dark"] .err-box code{background:rgba(248,113,113,.12)}
html[data-theme^="dark"] .fld-err{color:#f87171}
html[data-theme^="dark"] .inp.bad{border-color:#7c3237;background:#2b1515}
html[data-theme^="dark"] .tab:hover,html[data-theme^="dark"] .tab.on{background:var(--panel)}
html[data-theme^="dark"] .tab.on .cnt{background:rgba(96,165,250,.16);color:var(--ac2)}
html[data-theme^="dark"] .row-sel{background:#13233c!important}
html[data-theme^="dark"] .pre{color:#c9d4e8}
html[data-theme^="dark"] .diff-easy{color:#34d399}
html[data-theme^="dark"] .diff-medium{color:#fbbf24}
html[data-theme^="dark"] .diff-hard{color:#f87171}
html[data-theme^="dark"] mark.hl{background:#3a2f14;color:#fcd34d}
html[data-theme="dark-c"] .tab.on .cnt{background:rgba(167,139,250,.18)}
html[data-theme="dark-c"] .row-sel{background:#241a4a!important}

/* Переключатель фона: на узких экранах — только иконки, без слова «Светлая» */
@media(max-width:900px){
  .theme-seg button[data-ptt="light"]{font-size:0}
  .theme-seg button[data-ptt="light"]::before{content:"☀️";font-size:12px}
  #hd-site{display:none}
}