/* ============================================================
   NAKOPCHIK — общая тема «Cumulative Light»
   Применяется на всех страницах (накоп, вход, подготовка).
   ============================================================ */
:root{
  --nk-ink:#0B0E14; --nk-surface:#131A28; --nk-surface-2:#0E1320; --nk-hairline:#222B3D;
  --nk-indigo:#6366F1; --nk-violet:#8B5CF6; --nk-violet-300:#A78BFA;
  --nk-emerald:#34D399; --nk-teal:#2DD4BF; --nk-green:#4ADE80; --nk-gold:#F5B642;
  --nk-text:#F1F4F9; --nk-muted:#8A93A6; --nk-dim:#5D6678;
  --nk-grad-progress:linear-gradient(90deg,#34D399 0%,#2DD4BF 100%);
  --nk-grad-number:linear-gradient(135deg,#6366F1 0%,#8B5CF6 100%);
  --nk-grad-cta:linear-gradient(135deg,#6366F1 0%,#8B5CF6 100%);
  --nk-grad-accrual:linear-gradient(0deg,#34D399 0%,#6366F1 50%,#8B5CF6 100%);
  --nk-r-card:22px; --nk-r-inner:16px; --nk-r-tile:12px; --nk-r-input:12px; --nk-r-pill:999px;
  --nk-font-display:'Outfit',system-ui,-apple-system,'Segoe UI',sans-serif;
  --nk-font-mono:'JetBrains Mono',ui-monospace,'SF Mono',monospace;
  --nk-font-accent:'Jura',var(--nk-font-display);
  --nk-shadow-card:0 1px 0 rgba(255,255,255,.02) inset,0 10px 34px rgba(0,0,0,.38);
  --nk-glow-brand:0 10px 28px rgba(99,102,241,.40);
  --nk-glow-mark:0 16px 40px rgba(99,102,241,.26);
  --nk-focus:0 0 0 3px rgba(99,102,241,.45);
  --nk-ease:220ms cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1300px 900px at 50% -8%,#121A2E 0%,var(--nk-ink) 58%),var(--nk-ink);
  background-attachment:fixed;
  color:var(--nk-text); font-family:var(--nk-font-display);
  -webkit-font-smoothing:antialiased; -webkit-text-size-adjust:100%;
}
a{color:var(--nk-violet-300);text-decoration:none}
a:hover{color:var(--nk-violet)}
.mono{font-family:var(--nk-font-mono)}
.muted{color:var(--nk-muted)} .dim{color:var(--nk-dim)}
.hide{display:none!important}

/* ---------- бренд / логотип ---------- */
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:38px;height:38px;display:block;filter:drop-shadow(var(--nk-glow-mark))}
.brand .wm{font-family:var(--nk-font-display);font-weight:800;font-size:22px;letter-spacing:.01em;color:var(--nk-text)}
.brand .wm small{font-family:var(--nk-font-mono);font-weight:400;font-size:11px;color:var(--nk-dim);display:block;letter-spacing:.18em;text-transform:uppercase;margin-top:-2px}

/* ---------- кнопки ---------- */
.btn{font-family:var(--nk-font-display);font-weight:600;font-size:14px;border-radius:var(--nk-r-pill);
  padding:9px 16px;border:1px solid var(--nk-hairline);background:var(--nk-surface);color:var(--nk-text);
  cursor:pointer;transition:transform var(--nk-ease),box-shadow var(--nk-ease),border-color var(--nk-ease);white-space:nowrap}
.btn:hover{border-color:var(--nk-violet-300)}
.btn:active{transform:scale(.92)}
.btn.sm{padding:6px 10px;font-size:13px}
.btn.icononly{padding:6px 8px;display:inline-flex;align-items:center;justify-content:center}
.btn.icononly svg{display:block}
.btn.primary{color:#fff;background:var(--nk-grad-cta);border:0;box-shadow:var(--nk-glow-brand)}
.btn.ghost{background:transparent}
.btn.edit{color:var(--nk-green);border-color:rgba(74,222,128,.45)}
.btn.edit:hover{border-color:var(--nk-green)}
.btn.danger{color:#FF8A8A;border-color:rgba(255,107,107,.45)}
.btn.danger:hover{border-color:#FF6B6B}
.btn.good{color:#06281b;background:linear-gradient(135deg,var(--nk-emerald),var(--nk-green));border:0;font-weight:700}
.btnfull{width:100%;font-family:var(--nk-font-display);font-weight:600;font-size:16px;border-radius:14px;
  padding:14px 18px;border:1px solid var(--nk-hairline);background:var(--nk-surface-2);color:var(--nk-text);
  cursor:pointer;display:flex;flex-direction:column;gap:3px;align-items:center;transition:border-color var(--nk-ease),transform var(--nk-ease)}
.btnfull:hover{border-color:var(--nk-violet-300)}
.btnfull:active{transform:scale(.975)}
.btnfull .s{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);font-weight:400}
.btnfull.primary{color:#fff;background:var(--nk-grad-cta);border:0;box-shadow:var(--nk-glow-brand)}
.btnfull.good{color:#06281b;background:linear-gradient(135deg,var(--nk-emerald),var(--nk-green));border:0}
.linkbtn{background:none;border:0;color:var(--nk-muted);font-family:var(--nk-font-mono);font-size:13px;cursor:pointer;padding:4px}
.linkbtn:hover{color:var(--nk-violet-300)}

/* ---------- поля ---------- */
.field{height:46px;padding:0 14px;background:var(--nk-surface-2);border:1px solid var(--nk-hairline);
  border-radius:var(--nk-r-input);color:var(--nk-text);font-family:var(--nk-font-display);font-size:16px;width:100%}
.field:focus{outline:none;border-color:var(--nk-indigo);box-shadow:var(--nk-focus)}
.field::placeholder{color:var(--nk-dim)}

/* ============================================================
   КАЛЬКУЛЯТОР НАКОПА
   ============================================================ */
.wrap{max-width:1180px;margin:0 auto;padding:18px}
header.app{position:sticky;top:0;z-index:5;background:rgba(11,14,20,.5);
  backdrop-filter:blur(16px) saturate(120%);-webkit-backdrop-filter:blur(16px) saturate(120%);
  border-bottom:1px solid rgba(34,43,61,.55)}
.hbar{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:13px 18px 11px}
.spacer{flex:1}
.who{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-text);background:var(--nk-surface);
  border:1px solid var(--nk-hairline);padding:6px 12px;border-radius:var(--nk-r-pill);white-space:nowrap;
  max-width:180px;overflow:hidden;text-overflow:ellipsis}
.who b{color:var(--nk-violet-300);font-weight:700}
.status{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);min-width:104px;text-align:right}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:20px;align-items:stretch}
.card{background:var(--nk-surface);border:1px solid var(--nk-hairline);border-radius:var(--nk-r-card);
  box-shadow:var(--nk-shadow-card);padding:22px;display:flex;flex-direction:column;gap:14px;height:100%;position:relative}
.card .idx{position:absolute;top:18px;right:20px;font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-dim);letter-spacing:.1em}
.card h2{margin:0;display:flex;align-items:center;gap:8px;padding-right:34px}
.subject-title,.card h2 input{font-family:var(--nk-font-display);font-weight:700;font-size:24px;color:var(--nk-text);letter-spacing:.01em}

.rows{display:flex;flex-direction:column;gap:8px}
.row{display:grid;grid-template-columns:minmax(0,1fr) auto 92px;gap:12px;align-items:center}
.row .nm{font-size:17px;color:var(--nk-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .nm.exam{color:var(--nk-gold)}
.row .w{font-family:var(--nk-font-mono);font-size:14px;color:var(--nk-muted);text-align:right}
.input{height:44px;min-width:92px;padding:0 12px;background:var(--nk-surface-2);border:1px solid var(--nk-hairline);
  border-radius:var(--nk-r-input);color:var(--nk-text);font-family:var(--nk-font-display);font-weight:700;font-size:18px;text-align:center}
.input:focus{outline:none;border-color:var(--nk-indigo);box-shadow:var(--nk-focus)}
.input::placeholder{color:var(--nk-dim)}
.input.wt{min-width:0;width:60px;font-size:15px}

.group{border:1px solid var(--nk-hairline);border-radius:var(--nk-r-tile);padding:12px;background:var(--nk-surface-2);display:flex;flex-direction:column;gap:9px}
.group .ghead{display:flex;align-items:center;gap:8px}
.group .gname{flex:1;min-width:0;width:100%;font-family:var(--nk-font-display);font-weight:600;font-size:16px;color:var(--nk-text)}
.group .gitems{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:8px}
.git{display:flex;flex-direction:column;gap:3px}
.git label{font-family:var(--nk-font-mono);font-size:11px;color:var(--nk-muted);text-align:center}
.git .input{min-width:0;height:40px;font-size:16px;padding:0 6px}

/* блок результата */
.result{margin-top:auto;background:var(--nk-surface-2);border:1px solid var(--nk-hairline);
  border-radius:var(--nk-r-inner);padding:18px 18px 16px;display:flex;flex-direction:column;gap:12px}
.accrual{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.num{font-family:var(--nk-font-display);font-weight:800;font-size:48px;line-height:1;
  background:var(--nk-grad-number);-webkit-background-clip:text;background-clip:text;color:transparent}
.num-of{font-family:var(--nk-font-display);font-weight:700;font-size:24px;color:var(--nk-text)}
.num.empty{background:none;color:var(--nk-dim);-webkit-text-fill-color:var(--nk-dim)}
.progress{height:9px;border-radius:6px;background:var(--nk-hairline);overflow:hidden}
.progress>i{display:block;height:100%;border-radius:6px;background:var(--nk-grad-progress);transition:width var(--nk-ease)}
.passed{font-size:16px;color:var(--nk-muted)}
.passed b{color:var(--nk-text);font-weight:700}
.whatif{display:flex;align-items:center;gap:10px;font-size:15px;flex-wrap:wrap;color:var(--nk-muted)}
.whatif .ex{color:var(--nk-gold);font-weight:600}
.whatif .input{width:78px;height:42px}
.fin{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.fin .fin-label{font-size:15px;color:var(--nk-muted)}
.fin .fin-v{font-family:var(--nk-font-display);font-weight:800;font-size:40px;line-height:1;color:var(--nk-green)}
.fin .fin-of{font-family:var(--nk-font-display);font-weight:800;font-size:22px;color:var(--nk-green)}
.fin .fin-of.muted{font-weight:400;font-size:14px;color:var(--nk-muted)}
.need-label{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);letter-spacing:.04em;margin-top:2px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:5px;font-family:var(--nk-font-mono);font-size:14px;color:var(--nk-green);
  border:1px solid rgba(74,222,128,.40);background:rgba(74,222,128,.08);border-radius:var(--nk-r-pill);padding:6px 13px}
.pill b{color:var(--nk-text);font-weight:700}
.pill.have{background:rgba(74,222,128,.16)}

.settings{display:flex;flex-wrap:wrap;gap:12px;font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);
  align-items:center;border-top:1px solid var(--nk-hairline);padding-top:10px;margin-top:2px}
.settings label{display:flex;align-items:center;gap:6px}
.iconbtn{border:0;background:transparent;color:#FF6B6B;cursor:pointer;font-size:18px;font-weight:700;line-height:1;padding:2px 6px;border-radius:8px}
.iconbtn:hover{color:#FF9B9B}
.editonly{display:none}
.editing .editonly{display:revert}
.editing .row{grid-template-columns:minmax(0,1fr) auto 92px 30px}

/* «тряска» плиток в режиме редактирования (как иконки в iOS) */
@keyframes nk-wobble{0%{transform:rotate(-.55deg)}50%{transform:rotate(.55deg)}100%{transform:rotate(-.55deg)}}
@keyframes nk-pop{0%{transform:scale(.93)}45%{transform:scale(1.03) rotate(1.6deg)}72%{transform:rotate(-1.1deg)}100%{transform:none}}
.editing .card{animation:nk-wobble .3s ease-in-out infinite}
.editing .card:nth-child(2n){animation-duration:.34s;animation-direction:reverse}
.editing .card:nth-child(3n){animation-duration:.27s}
.editing .card.still{animation:none}
.card.justadded{animation:nk-pop .55s ease-out !important}
@media (prefers-reduced-motion:reduce){.editing .card,.card.justadded{animation:none!important}}

footer{color:var(--nk-dim);font-family:var(--nk-font-mono);font-size:12px;text-align:center;padding:22px 0;letter-spacing:.03em}

/* дата экзамена и календарь */
.examdate{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px;
  background:var(--nk-surface-2);border:1px solid var(--nk-hairline);border-radius:var(--nk-r-tile);padding:9px 12px}
.examdate .ed-lbl{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted)}
.examdate .ed-when{color:var(--nk-gold);font-weight:600}
.examdate .ed-when b{color:var(--nk-text)}
.examdate .ed-days{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);font-weight:400;margin-left:4px}
.calbtn{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-violet-300);border:1px solid var(--nk-hairline);
  background:var(--nk-surface);border-radius:var(--nk-r-pill);padding:6px 13px;cursor:pointer}
.calbtn:hover{border-color:var(--nk-violet-300)}
.calpanel{background:var(--nk-surface);border:1px solid var(--nk-hairline);border-radius:var(--nk-r-card);
  box-shadow:var(--nk-shadow-card);padding:20px 22px;margin-bottom:20px}
.calpanel h3{margin:0 0 8px;font-family:var(--nk-font-display);font-weight:700;font-size:21px}
.calrow{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:13px 0;border-top:1px solid var(--nk-hairline)}
.calrow:first-of-type{border-top:0}
.caldate{font-family:var(--nk-font-display);font-weight:800;font-size:19px;color:var(--nk-text);min-width:92px;line-height:1.1}
.caldate small{display:block;font-family:var(--nk-font-mono);font-size:11px;color:var(--nk-muted);font-weight:400;text-transform:uppercase;letter-spacing:.08em;margin-top:2px}
.calname{flex:1;min-width:120px;font-family:var(--nk-font-display);font-weight:600;font-size:17px}
.caltime{font-family:var(--nk-font-mono);font-size:14px;color:var(--nk-gold)}
.caldays{font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-muted);min-width:96px}
.calactions{display:flex;gap:8px}
.calhead{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.subjbar{display:flex;align-items:center;gap:8px;margin-top:2px}
.subjbar .sp{flex:1}
.fin .fin-note{font-family:var(--nk-font-mono);font-size:11px;color:var(--nk-dim);align-self:center}
.draghint{font-family:var(--nk-font-mono);font-size:11px;color:var(--nk-dim);cursor:grab;user-select:none;padding:2px 4px}
.card.dragging{opacity:.4}
.editing .card.dragging{animation:none}
.card.dragover{outline:2px dashed var(--nk-violet);outline-offset:-3px}
.calbtn,.iconbtn,.pill{transition:transform var(--nk-ease),border-color var(--nk-ease),background var(--nk-ease),color var(--nk-ease)}
.calbtn:active,.pill:active{transform:scale(.93)}
.iconbtn:active{transform:scale(.82)}

/* чат импорта (ИИ) */
.chatpanel{max-width:560px;width:100%;height:min(86vh,720px);display:flex;flex-direction:column;padding:0;overflow:hidden;text-align:left;gap:0}
.chat-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--nk-hairline)}
.ch-title{display:flex;align-items:center;gap:9px;font-family:var(--nk-font-display);font-weight:700;font-size:16px}
.ch-mark{width:26px;height:26px;filter:drop-shadow(var(--nk-glow-mark))}
.ch-x{background:none;border:0;color:var(--nk-muted);font-size:18px;cursor:pointer;padding:4px 9px;border-radius:8px}
.ch-x:hover{color:var(--nk-text)}
.chat-msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.bubble{max-width:88%;padding:10px 13px;border-radius:14px;font-size:14.5px;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}
.bubble.assistant{align-self:flex-start;background:var(--nk-surface-2);border:1px solid var(--nk-hairline);border-bottom-left-radius:5px;color:var(--nk-text)}
.bubble.user{align-self:flex-end;background:var(--nk-grad-cta);color:#fff;border-bottom-right-radius:5px}
.bubble.typing{color:var(--nk-muted)}
.bubble.apply{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.chat-atts{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px}
.chat-atts:empty{display:none}
.attchip{display:inline-flex;align-items:center;gap:6px;font-family:var(--nk-font-mono);font-size:12px;color:var(--nk-violet-300);border:1px solid var(--nk-hairline);background:var(--nk-surface-2);border-radius:999px;padding:4px 6px 4px 10px}
.attx{background:none;border:0;color:var(--nk-muted);cursor:pointer;font-size:12px;padding:0 2px}
.chat-input{display:flex;align-items:flex-end;gap:8px;padding:12px 14px;border-top:1px solid var(--nk-hairline)}
.chat-input textarea{flex:1;resize:none;max-height:120px;background:var(--nk-surface-2);border:1px solid var(--nk-hairline);border-radius:12px;color:var(--nk-text);font-family:var(--nk-font-display);font-size:15px;padding:10px 12px;line-height:1.4}
.chat-input textarea:focus{outline:none;border-color:var(--nk-indigo)}

/* ---------- экраны входа ---------- */
.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}
.panel{background:var(--nk-surface);border:1px solid var(--nk-hairline);border-radius:24px;box-shadow:var(--nk-shadow-card);
  padding:30px 26px;max-width:400px;width:100%;display:flex;flex-direction:column;gap:14px;text-align:center}
.panel .mark{width:64px;height:64px;margin:0 auto 2px;filter:drop-shadow(var(--nk-glow-mark))}
.panel h2{margin:0;font-family:var(--nk-font-display);font-weight:700;font-size:24px}
.panel p{margin:0;font-size:14px;color:var(--nk-muted);line-height:1.55}
.bigpass{font-family:var(--nk-font-mono);font-size:23px;font-weight:700;letter-spacing:2px;
  background:var(--nk-surface-2);border:1px dashed var(--nk-green);border-radius:12px;padding:15px;color:var(--nk-green);user-select:all}
.err{color:#FF7A7A;font-size:13px;min-height:16px}

/* ---------- тост ---------- */
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--nk-surface);
  border:1px solid var(--nk-hairline);padding:10px 16px;border-radius:12px;font-size:14px;
  box-shadow:0 10px 30px rgba(0,0,0,.5);opacity:0;transition:.2s;z-index:60}
.toast.show{opacity:1}

@media (max-width:520px){
  .wrap{padding:12px}
  header.app{padding:12px;gap:9px}
  .brand .wm{font-size:19px}
  .grid{grid-template-columns:1fr;gap:14px}
  .card{padding:18px;border-radius:18px}
  .subject-title,.card h2 input{font-size:21px}
  .num{font-size:40px}
  .fin .fin-v{font-size:32px}
  .row{grid-template-columns:1fr auto 82px}
}