/* ═══════════════════════════════════════════════════════════════
   OmicsLab — User Guide Styles
   ═══════════════════════════════════════════════════════════════ */

/* ── Page shell ── */
.ug-page {
  min-height: 100vh;
}

/* ── Header ── */
.ug-header {
  background: linear-gradient(180deg, rgba(30,35,45,.9) 0%, rgba(13,17,23,0) 100%);
  border-bottom: 1px solid #21262d;
  padding: 2.5rem 0 2rem;
}
.ug-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}
.ug-eyebrow {
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #58a6ff;
  margin-bottom: .6rem;
}
.ug-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  color: #e6edf3;
  line-height: 1.2;
  margin-bottom: .7rem;
}
.ug-subtitle {
  font-size: .87rem;
  color: #8b949e;
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 1.5rem;
}

/* Search */
.ug-search-wrap {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
}
.ug-search-icon {
  position: absolute;
  left: .9rem;
  top: 50%;
  transform: translateY(-50%);
  color: #484f58;
  pointer-events: none;
}
.ug-search-input {
  width: 100%;
  box-sizing: border-box;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 10px;
  color: #e6edf3;
  font-size: .88rem;
  font-family: inherit;
  padding: .7rem .9rem .7rem 2.4rem;
  outline: none;
  transition: border-color .15s;
}
.ug-search-input:focus { border-color: #58a6ff; }
.ug-search-input::placeholder { color: #484f58; }

/* ── Body layout ── */
.ug-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
}

/* ── Sidebar ── */
.ug-sidebar {
  padding-right: 1.5rem;
  padding-top: .5rem;
}
.ug-cats {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  position: sticky;
  top: 80px;
}
.ug-cat-btn {
  text-align: left;
  padding: .45rem .75rem;
  background: none;
  border: none;
  color: #8b949e;
  font-size: .8rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 7px;
  cursor: pointer;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.ug-cat-btn:hover { background: #21262d; color: #e6edf3; }
.ug-cat-active { background: rgba(88,166,255,.1) !important; color: #58a6ff !important; }

/* ── Main content ── */
.ug-main { min-width: 0; }
.ug-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid #21262d;
}
.ug-count {
  font-size: .75rem;
  font-weight: 700;
  color: #484f58;
}

/* ── Card grid ── */
.ug-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

/* ── Module card ── */
.ug-card {
  background: #0d1117;
  border: 1px solid #21262d;
  border-radius: 12px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: border-color .2s, background .2s;
}
.ug-card:hover {
  border-color: var(--mc, #30363d);
  background: #161b22;
}

/* Card top */
.ug-card-top {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}
.ug-card-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(255,255,255,.04);
  border: 1px solid #21262d;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mc, #8b949e);
}
.ug-card-name {
  font-size: .9rem;
  font-weight: 800;
  color: #e6edf3;
  line-height: 1.25;
}
.ug-card-tagline {
  font-size: .73rem;
  color: var(--mc, #8b949e);
  font-weight: 600;
  margin-top: .15rem;
}

/* Description */
.ug-card-desc {
  font-size: .78rem;
  color: #8b949e;
  line-height: 1.7;
  margin: 0;
  flex: 1;
}

/* Why it matters */
.ug-card-why {
  background: rgba(255,255,255,.025);
  border-left: 2px solid var(--mc, #30363d);
  border-radius: 0 6px 6px 0;
  padding: .5rem .7rem;
}
.ug-why-label {
  display: block;
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--mc, #484f58);
  margin-bottom: .2rem;
}
.ug-why-text {
  font-size: .76rem;
  color: #c9d1d9;
  line-height: 1.55;
}

/* Footer */
.ug-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}
.ug-tags {
  display: flex;
  gap: .3rem;
  flex-wrap: wrap;
  flex: 1;
}
.ug-tag {
  font-size: .62rem;
  font-weight: 700;
  color: #484f58;
  border: 1px solid #21262d;
  border-radius: 99px;
  padding: .1rem .5rem;
}
.ug-open-btn {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .35rem .8rem;
  background: rgba(88,166,255,.08);
  border: 1px solid rgba(88,166,255,.2);
  color: #58a6ff;
  font-size: .75rem;
  font-weight: 700;
  font-family: inherit;
  border-radius: 7px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background .15s;
}
.ug-open-btn:hover { background: rgba(88,166,255,.16); }

/* How to access */
.ug-card-how {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .67rem;
  color: #484f58;
  padding-top: .4rem;
  border-top: 1px solid #21262d;
}

/* Empty state */
.ug-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: #484f58;
}
.ug-empty p { font-size: .88rem; margin: .75rem 0 1rem; }
.ug-empty strong { color: #8b949e; }
.ug-clear-btn {
  padding: .45rem 1.1rem;
  background: #161b22;
  border: 1px solid #30363d;
  color: #8b949e;
  font-size: .8rem;
  font-family: inherit;
  border-radius: 7px;
  cursor: pointer;
}
.ug-clear-btn:hover { background: #21262d; color: #e6edf3; }

/* ── Responsive ── */
@media (max-width: 800px) {
  .ug-body { grid-template-columns: 1fr; }
  .ug-sidebar { padding-right: 0; padding-bottom: 1rem; }
  .ug-cats { flex-direction: row; flex-wrap: wrap; position: static; }
  .ug-cat-btn { font-size: .73rem; padding: .3rem .65rem; }
}
@media (max-width: 500px) {
  .ug-grid { grid-template-columns: 1fr; }
}