/* ============================================================================
   THE VIRUS ENCYCLOPEDIA — clean, modern, accessible design
   ============================================================================ */
:root {
  --bg: #0d1017;
  --bg-rail: #12161f;
  --bg-card: #171c27;
  --bg-card-hover: #1d2432;
  --bg-panel: #10141d;
  --line: #242c3a;
  --line-soft: #1b212d;
  --ink: #eef2f8;
  --ink-soft: #aab4c5;
  --ink-mute: #6d7789;
  --accent: #e0563f;
  --accent-2: #f2b134;
  --accent-3: #5b8def;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --serif: "Fraunces", Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--sans);
  background:
    radial-gradient(1200px 700px at 60% -10%, #182338 0%, transparent 60%),
    radial-gradient(900px 600px at 100% 100%, #1a1626 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 16, 23, 0.7);
  backdrop-filter: blur(12px);
  z-index: 20;
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 15px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  background:
    radial-gradient(circle at 50% 50%, var(--accent) 0 34%, transparent 36%),
    radial-gradient(circle at 50% 8%, var(--accent-2) 0 9%, transparent 11%),
    radial-gradient(circle at 50% 92%, var(--accent-2) 0 9%, transparent 11%),
    radial-gradient(circle at 8% 50%, var(--accent-2) 0 9%, transparent 11%),
    radial-gradient(circle at 92% 50%, var(--accent-2) 0 9%, transparent 11%),
    #1c2434;
  box-shadow: inset 0 0 0 1px var(--line);
}
.topbar h1 { font-family: var(--serif); font-size: 21px; font-weight: 600; letter-spacing: -0.01em; }
.tagline { color: var(--ink-soft); font-size: 12.5px; margin-top: 1px; }
.stats { display: flex; gap: 26px; }
.stat { text-align: center; }
.stat strong { font-family: var(--serif); font-size: 22px; font-weight: 600; display: block; line-height: 1; color: var(--accent-2); }
.stat span { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-mute); }

/* ---------- layout ---------- */
.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 340px 1fr 400px;
  min-height: 0;
}

/* ---------- left rail ---------- */
.rail {
  background: var(--bg-rail);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 18px 16px 0;
}
.search-wrap { position: relative; margin-bottom: 14px; }
.search-ico { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--ink-mute); }
#search {
  width: 100%;
  padding: 11px 12px 11px 37px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 13.5px;
  font-family: var(--sans);
  transition: border-color 0.15s;
}
#search:focus { outline: none; border-color: var(--accent-3); }
#search::placeholder { color: var(--ink-mute); }

.filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip {
  padding: 5px 11px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--sans);
  transition: all 0.15s;
}
.chip:hover { border-color: var(--ink-mute); color: var(--ink); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.rail-count { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-mute); margin-bottom: 10px; padding-left: 2px; }

.grid { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 7px; padding-right: 4px; padding-bottom: 8px; }
.grid::-webkit-scrollbar { width: 8px; }
.grid::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }
.grid::-webkit-scrollbar-thumb:hover { background: #303a4d; }

.card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  font-family: var(--sans);
  color: var(--ink);
  transition: all 0.14s;
}
.card:hover { background: var(--bg-card-hover); border-color: var(--line); transform: translateX(2px); }
.card-swatch {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  background: radial-gradient(circle at 35% 30%, var(--s) 0 18%, transparent 20%),
              radial-gradient(circle at 70% 65%, var(--s) 0 14%, transparent 16%),
              radial-gradient(circle at 50% 50%, var(--c), #0c0f16);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
}
.card-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.card-name { font-weight: 600; font-size: 14px; }
.card-common { font-size: 11.5px; color: var(--ink-mute); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.tag {
  font-size: 10px; padding: 2.5px 7px; border-radius: 5px;
  background: #1e2534; color: var(--ink-soft); white-space: nowrap; font-weight: 500;
}
.tag-class { background: rgba(91, 141, 239, 0.16); color: #9db8f0; }

.empty { color: var(--ink-mute); font-size: 13px; padding: 24px 6px; text-align: center; }

.rail-foot { padding: 14px 4px 16px; border-top: 1px solid var(--line-soft); margin-top: 6px; }
.rail-foot p { font-size: 10.5px; color: var(--ink-mute); line-height: 1.55; }
.rail-foot strong { color: var(--ink-soft); font-weight: 600; }
.disclaimer { margin-top: 7px; font-style: italic; }

/* ---------- center stage ---------- */
.stage { position: relative; min-width: 0; overflow: hidden; }
.viewer { position: absolute; inset: 0; }
.viewer canvas { display: block; width: 100% !important; height: 100% !important; cursor: grab; }
.viewer canvas:active { cursor: grabbing; }

.stage-overlay { position: absolute; inset: 0; pointer-events: none; padding: 24px; display: flex; flex-direction: column; }
.model-caption { pointer-events: none; }
.model-caption h2 { font-family: var(--serif); font-size: 30px; font-weight: 600; letter-spacing: -0.015em; }
.model-caption p { color: var(--ink-soft); font-size: 13.5px; margin-top: 3px; max-width: 380px; }

.viewer-controls { margin-top: auto; display: flex; gap: 8px; pointer-events: auto; }
.vc-btn {
  pointer-events: auto;
  padding: 8px 14px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: rgba(18, 22, 31, 0.8);
  backdrop-filter: blur(8px);
  color: var(--ink);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--sans);
  transition: all 0.15s;
}
.vc-btn:hover { border-color: var(--accent-3); color: #fff; }
.vc-btn.off { opacity: 0.75; }
.drag-hint { text-align: center; color: var(--ink-mute); font-size: 11.5px; margin-top: 12px; letter-spacing: 0.03em; }

/* ---------- right panel ---------- */
.panel {
  background: var(--bg-panel);
  border-left: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: margin-right 0.28s ease;
}
.panel:not(.open) { margin-right: -400px; }
.panel-close {
  position: absolute; top: 14px; right: 14px; z-index: 5;
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--bg-card); border: 1px solid var(--line);
  color: var(--ink-soft); font-size: 14px; cursor: pointer;
  transition: all 0.15s;
}
.panel-close:hover { color: var(--ink); border-color: var(--ink-mute); }

.panel-body { overflow-y: auto; padding: 24px 24px 40px; flex: 1; }
.panel-body::-webkit-scrollbar { width: 8px; }
.panel-body::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }

.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; padding-right: 34px; margin-bottom: 14px; }
.panel-head h2 { font-family: var(--serif); font-size: 25px; font-weight: 600; letter-spacing: -0.015em; line-height: 1.1; }
.panel-common { color: var(--ink-soft); font-size: 13px; margin-top: 3px; }
.tag-class.big { font-size: 11px; padding: 4px 10px; flex-shrink: 0; }

.lede {
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.5;
  color: var(--ink);
  padding: 14px 16px;
  background: linear-gradient(120deg, rgba(224,86,63,0.1), rgba(242,177,52,0.06));
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  margin-bottom: 22px;
}

.block { margin-bottom: 22px; }
.block h3 {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent-2); margin-bottom: 10px; font-weight: 600;
}
.plain-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.plain-list li {
  position: relative; padding-left: 24px; font-size: 14px; line-height: 1.5; color: var(--ink-soft);
}
.plain-list li::before {
  content: ""; position: absolute; left: 4px; top: 7px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 3px rgba(224,86,63,0.18);
}

.facts { display: flex; flex-direction: column; gap: 0; }
.fact { display: grid; grid-template-columns: 108px 1fr; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.fact:last-child { border-bottom: none; }
.fact dt { font-size: 11.5px; color: var(--ink-mute); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; padding-top: 1px; }
.fact dd { font-size: 13.5px; line-height: 1.5; color: var(--ink); }
.muted { color: var(--ink-mute); font-size: 0.92em; }

.news p { font-size: 13.5px; line-height: 1.55; color: var(--ink-soft); padding: 12px 14px; background: rgba(91,141,239,0.08); border-radius: 10px; border: 1px solid rgba(91,141,239,0.14); }

.sources { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.sources li { font-size: 12px; color: var(--ink-mute); padding-left: 16px; position: relative; line-height: 1.45; }
.sources li::before { content: "—"; position: absolute; left: 0; color: var(--accent-2); }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .layout { grid-template-columns: 300px 1fr 360px; }
  .panel:not(.open) { margin-right: -360px; }
}
@media (max-width: 960px) {
  body { overflow: auto; height: auto; }
  .layout { grid-template-columns: 1fr; grid-template-rows: auto 60vh auto; height: auto; }
  .rail { border-right: none; border-bottom: 1px solid var(--line); max-height: 70vh; }
  .stage { min-height: 60vh; }
  .panel { border-left: none; border-top: 1px solid var(--line); }
  .panel:not(.open) { margin-right: 0; display: none; }
  .stats { display: none; }
}