/* UzCAD Qo'llanma sahifasi uslublari */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-dark: #2b2b2b;
  --bg-darker: #1e1e1e;
  --bg-panel: #333333;
  --border: #4a4a4a;
  --text: #e0e0e0;
  --text-dim: #9a9a9a;
  --accent: #c4262e;
  --accent2: #0696d7;
  --ok: #3fcf6f;
}

html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", Tahoma, sans-serif;
  font-size: 14.5px;
  line-height: 1.65;
  background: var(--bg-dark);
  color: var(--text);
}

/* Yuqori panel */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-darker);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.topbar .logo { font-weight: 700; font-size: 17px; color: #fff; text-decoration: none; }
.topbar .logo span { color: var(--accent); }
.topbar .sub { color: var(--text-dim); font-size: 13px; }
.topbar .open-app {
  margin-left: auto;
  background: var(--accent2); color: #fff;
  padding: 6px 16px; border-radius: 4px;
  text-decoration: none; font-size: 13px; font-weight: 600;
}
.topbar .open-app:hover { background: #0b7fb5; }

.layout { display: flex; max-width: 1400px; margin: 0 auto; }

/* Mundarija */
nav.toc {
  width: 270px; flex-shrink: 0;
  position: sticky; top: 49px;
  height: calc(100vh - 49px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 16px 0 40px;
  background: #272727;
}
.toc h4 {
  padding: 12px 18px 4px;
  font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-dim);
}
.toc a {
  display: block;
  padding: 5px 18px 5px 26px;
  color: var(--text); text-decoration: none;
  font-size: 13.5px;
  border-left: 3px solid transparent;
}
.toc a:hover { background: #333; }
.toc a.active { border-left-color: var(--accent2); color: #9fd8ff; background: #2d3640; }

/* Kontent */
main {
  flex: 1; min-width: 0;
  padding: 28px 40px 120px;
}
main h1 { font-size: 30px; margin: 10px 0 6px; color: #fff; }
.lead { color: var(--text-dim); font-size: 16px; margin-bottom: 26px; }

section { margin-bottom: 46px; scroll-margin-top: 70px; }
section h2 {
  font-size: 22px; color: #fff;
  border-bottom: 2px solid var(--accent); display: inline-block;
  padding-bottom: 4px; margin-bottom: 14px;
}
section h3 { font-size: 16.5px; margin: 20px 0 8px; color: #cfe6ff; }
section p { margin-bottom: 10px; }
section ul, section ol { margin: 8px 0 12px 24px; }
section li { margin-bottom: 5px; }

code, kbd {
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 7px;
  font: 13px Consolas, "Courier New", monospace;
  color: #9fd8ff;
  white-space: nowrap;
}
kbd { color: #ffd98f; }

table {
  border-collapse: collapse; width: 100%;
  margin: 10px 0 16px; font-size: 13.5px;
}
th, td { border: 1px solid var(--border); padding: 6px 12px; text-align: left; vertical-align: top; }
th { background: var(--bg-darker); color: #cfe6ff; position: sticky; top: 49px; }
tr:nth-child(even) td { background: #2f2f2f; }

.badge {
  display: inline-block;
  font-size: 10.5px; font-weight: 700;
  padding: 1px 8px; border-radius: 10px;
  vertical-align: middle; white-space: nowrap;
}
.badge.uz { background: #14421f; color: #6fe08f; border: 1px solid #2a7a3f; }
.badge.acad { background: #3a3a3a; color: #aaa; border: 1px solid #555; }

.try {
  background: #24313b;
  border: 1px solid #2d526b;
  border-left: 4px solid var(--accent2);
  border-radius: 6px;
  padding: 12px 16px;
  margin: 14px 0;
}
.try b:first-child { color: #9fd8ff; }

.note {
  background: #3a3325;
  border: 1px solid #5c5030;
  border-left: 4px solid #d7a106;
  border-radius: 6px;
  padding: 12px 16px;
  margin: 14px 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px; margin: 16px 0;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  text-decoration: none; color: var(--text);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent2); transform: translateY(-2px); }
.card b { display: block; color: #9fd8ff; margin-bottom: 4px; font-size: 15px; }
.card span { font-size: 13px; color: var(--text-dim); }

/* Qidiruv */
.search-box {
  width: 100%;
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #fff;
  padding: 9px 14px;
  font-size: 14px;
  margin-bottom: 12px;
}
.search-box:focus { outline: none; border-color: var(--accent2); }

details.faq {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
  padding: 0 14px;
}
details.faq summary {
  cursor: pointer; padding: 10px 0;
  font-weight: 600; color: #cfe6ff;
}
details.faq p { padding: 0 0 12px; }

footer {
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 12.5px;
  padding: 18px 40px;
  text-align: center;
}
footer a { color: var(--accent2); }

@media (max-width: 860px) {
  nav.toc { display: none; }
  main { padding: 20px 16px 80px; }
  th { position: static; }
}