:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --ink: #152033;
  --muted: #5f6f87;
  --line: #dbe4ef;
  --soft: #eef4fb;
  --accent: #173f6f;
  --accent-2: #0b6b87;
  --good: #11633c;
  --bad: #a12a2a;
  --warn: #8a5a00;
  --shadow: 0 18px 50px rgba(24, 45, 71, .08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(23,63,111,.13), transparent 34rem),
    linear-gradient(180deg, #f9fbfe 0%, var(--bg) 100%);
}

.app-shell { max-width: 1440px; margin: 0 auto; padding: 28px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 22px;
  padding: 30px;
  background: linear-gradient(135deg, #12365f, #0b6b87);
  border-radius: 26px;
  color: white;
  box-shadow: var(--shadow);
}
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: 12px; opacity: .8; margin: 0 0 8px; }
h1 { margin: 0; font-size: clamp(30px, 5vw, 54px); line-height: 1; }
.subtitle { margin: 14px 0 0; max-width: 780px; color: rgba(255,255,255,.82); font-size: 17px; }
.status-card { display:flex; align-items:center; gap: 10px; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.28); padding: 13px 16px; border-radius: 999px; white-space: nowrap; }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #9af0c0; box-shadow: 0 0 0 5px rgba(154,240,192,.17); }
.notice { margin: 18px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--soft); color: var(--ink); }
.notice.warning { background: #fff8e8; border-color: #f1d58f; color: #5d4200; }
.notice.danger { background: #fff0f0; border-color: #f0b7b7; color: var(--bad); }
code { background: rgba(0,0,0,.06); padding: 2px 6px; border-radius: 6px; }
.tabs { display:flex; gap: 10px; flex-wrap: wrap; margin: 20px 0; }
.tab { border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 12px 18px; border-radius: 999px; cursor: pointer; font-weight: 700; }
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.panel { display: none; }
.active-panel { display: block; }
.layout-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.span-12 { grid-column: span 12; }
.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }
.card h2 { margin: 0 0 6px; font-size: 22px; }
.card h3 { margin: 0 0 8px; }
.card p { color: var(--muted); }
.card-title-row { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; margin-bottom: 14px; }
.search-box input, #librarySearch { min-width: 260px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
label { display:flex; flex-direction:column; gap:7px; font-weight:700; color: #26364d; }
small { color: var(--muted); font-weight: 500; line-height: 1.35; }
input, select { width: 100%; border: 1px solid var(--line); background:#fff; color: var(--ink); border-radius: 12px; padding: 12px 13px; font: inherit; font-weight: 600; outline: none; }
input:focus, select:focus { border-color: var(--accent-2); box-shadow: 0 0 0 4px rgba(11,107,135,.12); }
.inline-input { display:flex; align-items:center; gap: 8px; }
.inline-input span { background: var(--soft); padding: 12px 13px; border-radius: 12px; border: 1px solid var(--line); color: var(--muted); font-weight: 800; }
.inline-input select { max-width: 90px; }
.hidden { display:none !important; }
.choice-list { display:grid; grid-template-columns: 1fr; gap: 10px; max-height: 720px; overflow:auto; padding-right: 4px; }
.choice-card, .mode-card { text-align:left; border: 1px solid var(--line); background: #fff; border-radius: 16px; cursor:pointer; transition: .16s ease; color: inherit; }
.choice-card:hover, .mode-card:hover { transform: translateY(-1px); border-color: #9db5cf; box-shadow: 0 14px 30px rgba(24,45,71,.08); }
.choice-card.selected, .mode-card.selected { border-color: var(--accent-2); box-shadow: 0 0 0 4px rgba(11,107,135,.13); background: linear-gradient(180deg, #fff, #f2fbff); }
.choice-card { display:grid; grid-template-columns: 92px 1fr; gap: 12px; padding: 12px; }
.choice-icon { display:flex; align-items:center; justify-content:center; background: var(--soft); border-radius: 14px; min-height: 82px; color: var(--accent); }
.choice-icon svg { width: 88px; height: 62px; }
.choice-card strong, .mode-card strong { display:block; font-size: 15px; margin-bottom: 4px; }
.choice-card span, .mode-code { display:inline-flex; font-size: 12px; font-weight: 800; color: var(--accent-2); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 5px; }
.choice-card small, .mode-card small { display:block; }
.info-box { background: #f8fbff; border: 1px solid var(--line); border-radius: 16px; padding: 15px; margin-top: 14px; }
.info-box dl, .mini-table { margin: 0; }
dl { display:grid; grid-template-columns: 1fr; gap: 8px; }
dl div { display:grid; grid-template-columns: 160px 1fr; gap: 10px; padding-top: 8px; border-top: 1px solid var(--line); }
dt { color: var(--muted); font-weight: 700; }
dd { margin: 0; font-weight: 700; }
.mode-grid { display:grid; grid-template-columns: repeat(auto-fill, minmax(245px, 1fr)); gap: 14px; }
.mode-card { padding: 0; overflow:hidden; }
.mode-illustration { background: linear-gradient(145deg, #eef5fb, #fff); color: var(--accent); display:flex; align-items:center; justify-content:center; border-bottom: 1px solid var(--line); min-height: 136px; }
.mode-svg { width: 180px; height: 120px; }
.mode-meta { padding: 14px; }
.result.empty { color: var(--muted); }
.result-status { padding: 12px 14px; border-radius: 14px; margin-bottom: 14px; font-weight: 900; }
.result-status.good { background: #eaf8f0; color: var(--good); border: 1px solid #bee5ce; }
.result-status.bad { background: #fff0f0; color: var(--bad); border: 1px solid #efc0c0; }
.result-main { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin-bottom: 14px; }
.result-main div { background: var(--soft); border-radius: 14px; padding: 14px; border: 1px solid var(--line); }
.result-main span { display:block; color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px; }
.result-main strong { font-size: 21px; }
.mini-table, table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align:left; vertical-align:top; }
th { color: var(--muted); font-weight: 800; }
.actions { display:flex; flex-wrap:wrap; gap: 10px; margin-top: 16px; }
.primary-btn, .ghost-btn { border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 13px; padding: 12px 15px; cursor:pointer; font-weight: 800; }
.ghost-btn { background:#fff; color: var(--accent); }
.ghost-btn.small { padding: 8px 12px; }
.steps { display:grid; gap: 12px; }
.steps div { display:grid; grid-template-columns: 36px 1fr; gap: 12px; align-items:flex-start; }
.steps span { width: 36px; height: 36px; display:flex; align-items:center; justify-content:center; background: var(--accent); color: #fff; border-radius: 50%; font-weight: 900; }
.steps p { margin: 6px 0 0; color: var(--ink); }
.definitions-grid { display:grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.definition-card { border: 1px solid var(--line); background: #fff; border-radius: 16px; padding: 16px; }
.definition-card p { margin-bottom: 0; }
.data-grid { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 980px) {
  .topbar, .card-title-row { flex-direction: column; }
  .layout-grid { grid-template-columns: 1fr; }
  .span-12, .span-7, .span-6, .span-5 { grid-column: span 1; }
  .form-grid, .form-grid.compact, .data-grid { grid-template-columns: 1fr; }
  .result-main { grid-template-columns: 1fr; }
  .search-box input, #librarySearch { min-width: 0; }
}
@media print {
  body { background:#fff; }
  .tabs, .actions, .topbar .status-card, #cableCards, #modeCards, .search-box, .notice.warning { display:none !important; }
  .card { box-shadow:none; break-inside: avoid; }
  .panel { display:block; }
  .panel:not(.active-panel) { display:none; }
}