/* /assets/app.css — black & white (mono) */

/* Палитра */
:root{
  --bg:#000000;
  --card:#0a0a0a;
  --surface-2:#0e0e0e;
  --text:#ffffff;
  --muted:#bfbfbf;
  --border:#1f1f1f;
  --accent:#ffffff;              /* белый как акцент */
  --accent-weak:rgba(255,255,255,.18);
  --accent-weak-2:rgba(255,255,255,.08);
}

*{box-sizing:border-box}

/* База */
body{
  margin:0;
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial;
  background:var(--bg);
  color:var(--text);
}

.container{max-width:1200px;margin:0 auto;padding:24px}

/* Шапка */
.header{
  position:sticky; top:0;
  backdrop-filter:blur(8px);
  background:rgba(0,0,0,.78);
  border-bottom:1px solid var(--border);
}
.h-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 24px}
.logo{width:32px;height:32px;border-radius:14px;display:grid;place-items:center;border:1px solid var(--border);background:transparent;color:#fff}

/* Текст/сетки/карточки */
.muted{color:var(--muted)}
.grid{display:grid;gap:16px}
.cards{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px}
.row{display:flex;gap:12px;align-items:center}

/* Кнопки: primary — белые; secondary — чёрные */
.btn{
  background:#ffffff;color:#000000;border:1px solid #ffffff;
  padding:10px 14px;border-radius:12px;cursor:pointer;font-weight:600;
  transition:transform .02s ease-in-out,opacity .15s;
}
.btn:hover{opacity:.92}
.btn:active{transform:scale(.995)}
.btn.secondary{
  background:#000000;color:#ffffff;border:1px solid var(--border);
}
.btn[disabled]{opacity:.6;cursor:not-allowed}

/* Табы */
.tabbar{display:flex;gap:8px}
.tabbar .tab{
  background:#0b0b0b;color:var(--text);
  border:1px solid var(--border);border-radius:10px;padding:8px 12px;cursor:pointer
}
.tabbar .tab.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}

/* Выборки (тарифы/ОС) */
.selectable{
  background:var(--accent-weak-2);border:1px solid var(--border);
  border-radius:12px;padding:12px;cursor:pointer;transition:.15s;text-align:left;color:var(--text)
}
.selectable:hover{border-color:#2a2a2a;background:#121212}
.selectable.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak);background:#151515}
.selectable .tag{color:var(--muted)}

.tag{font-size:12px;color:var(--muted)}
.section-title{margin:8px 0;font-size:14px;color:var(--muted)}

/* Инпуты/селекты */
input[type=text],input[type=password],input[type=email]{
  width:100%;background:#0f0f0f;border:1px solid var(--border);
  border-radius:12px;padding:10px 12px;color:var(--text)
}
input::placeholder{color:#8a8a8a}
.os-version{
  width:100%;margin-top:8px;background:#0f0f0f;border:1px solid var(--border);color:var(--text);
  border-radius:10px;padding:8px 10px;font-size:14px
}

/* Слайдер */
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;background:#0f0f0f;border-radius:999px;outline:none;border:1px solid var(--border)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;background:#ffffff;border-radius:50%;box-shadow:0 0 0 4px var(--accent-weak);cursor:pointer}

/* Подсказки/вывод */
.notice{padding:10px 12px;border:1px dashed var(--border);border-radius:12px;background:var(--surface-2);color:var(--muted)}
pre{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:12px;max-height:260px;overflow:auto;font-size:12px}

/* Таблица */
.table{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.table th,.table td{border-bottom:1px solid var(--border);padding:10px 12px;text-align:left;font-size:14px}
.table th{color:var(--muted);background:#0f0f0f}
.badge{display:inline-block;padding:2px 8px;border:1px solid var(--border);border-radius:999px;font-size:12px;color:var(--muted);background:#111}

/* Модалка */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;align-items:center;justify-content:center;z-index:50}
.modal .sheet{width:min(900px,96vw);background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.modal .head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);font-weight:700}
.modal .body{padding:16px}
.close{background:#0f0f0f;border:1px solid var(--border);border-radius:10px;padding:6px 10px;color:var(--text);cursor:pointer}

/* Адаптив */
@media (max-width:900px){
  .cards{grid-template-columns:1fr}
  .cols{display:grid;grid-template-columns:1fr;gap:16px}
}

/* Низ страницы */
.footer{text-align:center;opacity:.5;font-size:12px;padding:32px 0}