/* HVL Lab viewer — universal legacy-compatible stylesheet (works on old Firefox ESR, Chrome, IE11+, file://) */
* { margin: 0; padding: 0; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

[hidden] { display: none !important; }
header, main, section, article, footer { display: block; }

html { -webkit-text-size-adjust: 100%; background: #0e131d; color: #e6ebf4; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "DejaVu Sans", "Liberation Sans", Helvetica, Arial, sans-serif;
  background: #0e131d;
  color: #e6ebf4;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
}

/* ---------- top bar ---------- */
.topbar {
  background: #171f2e;
  border-bottom: 1px solid #2a3547;
  padding: 14px 20px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}
.brand {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-right: 16px;
}
.brand-mark {
  font-family: "DejaVu Sans Mono", "Liberation Mono", Menlo, Consolas, monospace;
  font-size: 16px;
  font-weight: 700;
  color: #5b8cff;
  background: #101724;
  border: 1px solid #2a3547;
  border-radius: 6px;
  padding: 6px 8px;
  line-height: 1;
  margin-right: 12px;
}
.brand h1 { font-size: 20px; letter-spacing: -0.01em; color: #e6ebf4; }
.brand p { font-size: 12.5px; color: #9aa7bd; }
.topbar-right {
  margin-left: auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
#search {
  font: inherit;
  font-size: 14px;
  padding: 8px 12px;
  border: 1px solid #2a3547;
  border-radius: 8px;
  width: 240px;
  max-width: 60vw;
  background: #101724;
  color: #e6ebf4;
  margin-right: 10px;
}
#search:focus { outline: 2px solid #5b8cff; border-color: #5b8cff; }
.count { font-size: 12.5px; color: #9aa7bd; white-space: nowrap; }

/* ---------- layout ---------- */
.wrap {
  width: 1180px;
  max-width: 100%;
  margin: 0 auto;
  padding: 24px 20px 40px;
  -webkit-box-flex: 1;
  -ms-flex: 1 0 auto;
  flex: 1 0 auto;
}
.section-title { font-size: 17px; margin-bottom: 14px; color: #e6ebf4; }

/* ---------- cards (flexbox fallback for old browsers + grid) ---------- */
.grid {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin: -7px;
}
.card {
  font: inherit;
  text-align: left;
  background: #171f2e;
  border: 1px solid #2a3547;
  border-radius: 10px;
  padding: 16px;
  cursor: pointer;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  width: 270px;
  -webkit-box-flex: 1;
  -ms-flex: 1 1 250px;
  flex: 1 1 250px;
  margin: 7px;
  color: #e6ebf4;
  transition: border-color .12s, box-shadow .12s;
}
.card:hover, .card:focus {
  border-color: #5b8cff;
  box-shadow: 0 4px 16px rgba(29, 78, 216, .18);
  outline: none;
}
.card h3 { font-size: 15.5px; margin-bottom: 6px; color: #e6ebf4; }
.card p { font-size: 13px; color: #9aa7bd; margin-bottom: 8px; -webkit-box-flex: 1; -ms-flex: 1 0 auto; flex: 1 0 auto; }
.card .meta {
  font-size: 11.5px;
  color: #9aa7bd;
  font-family: "DejaVu Sans Mono", "Liberation Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
.empty { color: #9aa7bd; padding: 30px 0; }

/* ---------- detail ---------- */
.detail-head {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
  margin-bottom: 12px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}
.detail-head #backBtn { margin-right: 14px; margin-bottom: 6px; }
.detail-title h2 { font-size: 21px; letter-spacing: -0.01em; color: #e6ebf4; }
.detail-title p { color: #9aa7bd; font-size: 13.5px; }
.detail-actions {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-bottom: 14px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}
.detail-actions .btn { margin-right: 8px; margin-bottom: 6px; }

/* ---------- buttons ---------- */
.btn {
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid #2a3547;
  background: #171f2e;
  color: #e6ebf4;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  display: inline-block;
}
.btn:hover { border-color: #9aa7bd; background: #212b40; }
.btn.primary { background: #5b8cff; border-color: #5b8cff; color: #0b1220; }
.btn.primary:hover { background: #7ba0ff; }
.btn.ghost { background: transparent; }
.btn.small { font-size: 12.5px; padding: 5px 11px; }

/* ---------- side-by-side panes ---------- */
.panes {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: stretch;
  -ms-flex-align: stretch;
  align-items: stretch;
}
.pane {
  -webkit-box-flex: 1;
  -ms-flex: 1 1 0%;
  flex: 1 1 0%;
  width: 49%;
  min-width: 0;
  background: #171f2e;
  border: 1px solid #2a3547;
  border-radius: 10px;
  overflow: hidden;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
}
.pane + .pane { margin-left: 14px; }
.pane-head {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid #2a3547;
  border-top: 3px solid #22d3ee;
  background: #141b2a;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}
.pane-head.tb { border-top-color: #a78bfa; }
.pane-head strong { font-size: 13.5px; color: #e6ebf4; }
.pane-head .file {
  font-family: "DejaVu Sans Mono", "Liberation Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
  color: #9aa7bd;
  margin-left: 8px;
}
.pane-btns {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.pane-btns .btn + .btn { margin-left: 6px; }

/* ---------- code ---------- */
.code-scroll { overflow: auto; max-height: 68vh; background: #0a0f1c; }
.code-row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  min-height: 100%;
}
.gutter {
  -webkit-box-flex: 0;
  -ms-flex: 0 0 auto;
  flex: 0 0 auto;
  padding: 12px 10px 12px 14px;
  text-align: right;
  color: #64748b;
  background: #070b14;
  border-right: 1px solid #1a2334;
  font-family: "DejaVu Sans Mono", "Liberation Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.65;
  white-space: pre;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
.code {
  -webkit-box-flex: 1;
  -ms-flex: 1 0 auto;
  flex: 1 0 auto;
  padding: 12px 16px;
  font-family: "DejaVu Sans Mono", "Liberation Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.65;
  white-space: pre;
  color: #e2e8f0;
}
.code .c-com { color: #7d8aa0; font-style: italic; }
.code .c-str { color: #a5d6a7; }
.code .c-pp  { color: #f0abfc; }
.code .c-kw  { color: #93c5fd; }
.code .c-num { color: #fbbf24; }

/* ---------- footer + toast ---------- */
.footer {
  border-top: 1px solid #2a3547;
  padding: 12px 20px;
  font-size: 12px;
  color: #9aa7bd;
  background: #171f2e;
}
.footer code {
  font-family: "DejaVu Sans Mono", "Liberation Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
}
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
  background: #111827;
  border: 1px solid #5b8cff;
  color: #ffffff;
  font-size: 13.5px;
  padding: 10px 18px;
  border-radius: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .15s;
  max-width: 90%;
  z-index: 50;
}
.toast.show { opacity: 1; visibility: visible; }

/* ---------- small screens: stack panes ---------- */
@media (max-width: 900px) {
  .panes {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
  }
  .pane { width: 100%; }
  .pane + .pane { margin-left: 0; margin-top: 14px; }
  .code-scroll { max-height: none; }
  #search { width: 100%; }
  .topbar-right { width: 100%; margin-top: 10px; }
}