/* styles.css — South Lodge Systems Twin · design tokens (follow the brief) */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --base: #0b0b10;
  --panel: #14141c;
  --accent: #d9b877;      /* champagne */
  --gold: #e8c88a;        /* warm gold highlight */
  --muted: #a8a6b0;
  --white: #f5f3ef;

  --glass: rgba(18, 18, 26, 0.72);
  --glass-2: rgba(12, 12, 18, 0.82);
  --hair: rgba(217, 184, 119, 0.22);
  --hair-soft: rgba(217, 184, 119, 0.12);
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.8);

  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--base); color: var(--white); font-family: var(--sans); overflow: hidden; }
body { -webkit-font-smoothing: antialiased; }

#scene { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; touch-action: none; cursor: grab; }
#scene:active { cursor: grabbing; }

/* radial vignette for depth over the canvas */
.vignette { position: fixed; inset: 0; pointer-events: none; z-index: 1;
  background: radial-gradient(120% 90% at 50% 30%, transparent 40%, rgba(0,0,0,0.55) 100%); }

/* ---------- Masthead ---------- */
.masthead { position: fixed; top: 22px; left: 50%; transform: translateX(-50%); z-index: 6; text-align: center;
  pointer-events: none; opacity: 0; transition: opacity 1s ease 0.3s; }
body.ready .masthead { opacity: 1; }
.masthead .kicker { font-family: var(--mono); font-size: 10px; letter-spacing: 0.42em; text-transform: uppercase;
  color: var(--accent); opacity: 0.85; }
.masthead h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(22px, 3vw, 34px); margin: 2px 0 0;
  letter-spacing: 0.01em; color: var(--white); }
.masthead h1 em { font-style: italic; color: var(--gold); }

/* ---------- Navigator (left) ---------- */
#navigator { position: fixed; top: 0; left: 0; z-index: 5; width: 244px; height: 100vh;
  padding: 20px 14px 24px; overflow-y: auto; background: linear-gradient(100deg, var(--glass-2), rgba(12,12,18,0.35) 92%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-right: 1px solid var(--hair-soft);
  opacity: 0; transform: translateX(-16px); transition: opacity 0.8s ease 0.5s, transform 0.8s ease 0.5s; }
body.ready #navigator { opacity: 1; transform: none; }
#navigator::-webkit-scrollbar { width: 8px; }
#navigator::-webkit-scrollbar-thumb { background: var(--hair); border-radius: 8px; }

.nav-head { padding: 4px 8px 16px; border-bottom: 1px solid var(--hair-soft); margin-bottom: 12px; }
.nav-title { display: block; font-family: var(--serif); font-size: 26px; line-height: 1; color: var(--white); }
.nav-sub { font-family: var(--mono); font-size: 9px; letter-spacing: 0.34em; text-transform: uppercase; color: var(--accent); }

.nav-group { margin-bottom: 14px; }
.nav-group h3 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 6px 8px; }
.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-item { display: flex; align-items: center; gap: 9px; width: 100%; text-align: left; cursor: pointer;
  background: transparent; border: 1px solid transparent; border-radius: 9px; padding: 7px 10px;
  color: var(--muted); font-family: var(--sans); font-size: 13px; font-weight: 500; transition: all 0.18s ease; }
.nav-item .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--hair); flex: 0 0 auto; transition: all 0.18s ease; }
.nav-item:hover { color: var(--white); background: rgba(217,184,119,0.06); border-color: var(--hair-soft); }
.nav-item:hover .dot { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.nav-item.active { color: var(--white); background: rgba(217,184,119,0.12); border-color: var(--hair); }
.nav-item.active .dot { background: var(--gold); box-shadow: 0 0 10px var(--gold); }

/* ---------- Toggles (top-right) ---------- */
#toggles { position: fixed; top: 20px; right: 22px; z-index: 6; display: flex; gap: 8px;
  opacity: 0; transition: opacity 0.8s ease 0.6s; }
body.ready #toggles { opacity: 1; }
.toggle { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); background: var(--glass); border: 1px solid var(--hair-soft); border-radius: 999px;
  padding: 9px 15px; cursor: pointer; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: all 0.18s ease; }
.toggle:hover { color: var(--white); border-color: var(--hair); }
.toggle.active { color: var(--base); background: linear-gradient(180deg, var(--gold), var(--accent)); border-color: var(--gold);
  box-shadow: 0 0 18px -4px var(--accent); font-weight: 600; }
.toggle.plain { color: var(--muted); }
.toggle.plain:hover { color: var(--white); }

/* ---------- Legend (bottom-left) ---------- */
#legend { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; align-items: center;
  gap: 6px; padding: 8px 12px; background: var(--glass); border: 1px solid var(--hair-soft); border-radius: 999px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); opacity: 0; transition: opacity 0.8s ease 0.7s; flex-wrap: wrap; justify-content: center; }
body.ready #legend { opacity: 1; }
.legend-title { font-family: var(--mono); font-size: 9px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); padding-right: 4px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; font-family: var(--sans); font-size: 11px; font-weight: 500;
  color: var(--muted); background: transparent; border: 0; cursor: pointer; padding: 4px 8px; border-radius: 999px; transition: all 0.16s ease; }
.legend-item:hover { color: var(--white); background: rgba(255,255,255,0.05); }
.sw { width: 9px; height: 9px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px -1px var(--c); flex: 0 0 auto; }

/* ---------- Detail panel (right drawer) ---------- */
#panel { position: fixed; top: 0; right: 0; z-index: 7; width: 372px; max-width: 92vw; height: 100vh; overflow-y: auto;
  padding: 24px 24px 40px; background: var(--glass-2); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-left: 1px solid var(--hair); box-shadow: var(--shadow);
  transform: translateX(102%); transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
#panel.open { transform: none; }
#panel::-webkit-scrollbar { width: 8px; }
#panel::-webkit-scrollbar-thumb { background: var(--hair); border-radius: 8px; }

.p-head { position: relative; padding-bottom: 14px; margin-bottom: 6px; border-bottom: 1px solid var(--hair-soft); }
.p-close { position: absolute; top: -4px; right: -4px; width: 30px; height: 30px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,0.05); border: 1px solid var(--hair-soft); color: var(--muted); font-size: 13px; transition: all 0.16s ease; }
.p-close:hover { color: var(--white); border-color: var(--hair); background: rgba(217,184,119,0.12); }
.p-kicker { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }
.p-head h2 { font-family: var(--serif); font-weight: 400; font-size: 30px; line-height: 1.05; margin: 6px 44px 0 0; color: var(--white); }
.p-sub { font-size: 13px; color: var(--muted); margin: 8px 0 0; line-height: 1.5; }

.p-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 4px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--white); background: color-mix(in srgb, var(--c) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); border-radius: 999px; padding: 5px 10px; cursor: pointer; transition: all 0.16s ease; }
.chip:hover { background: color-mix(in srgb, var(--c) 26%, transparent); }

.p-sec { margin-top: 20px; }
.p-sec h4 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 9px; font-weight: 500; }
.p-sec ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.p-sec li { position: relative; padding-left: 16px; font-size: 13px; line-height: 1.5; color: #d7d5dd; }
.p-sec li::before { content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); opacity: 0.6; }
.p-sec ul.zlist li .sw { display: inline-block; margin-right: 8px; vertical-align: middle; }
.p-sec ul.zlist li { padding-left: 0; }
.p-sec ul.zlist li::before { display: none; }

.p-swatch { display: inline-flex; align-items: center; gap: 10px; margin-top: 14px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.p-swatch span { width: 26px; height: 12px; border-radius: 3px; background: var(--c); box-shadow: 0 0 14px -2px var(--c); }

/* ---------- Tooltip ---------- */
#tooltip { position: fixed; top: 0; left: 0; z-index: 8; pointer-events: none; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.03em; color: var(--white); background: var(--glass-2); border: 1px solid var(--hair);
  border-radius: 8px; padding: 6px 10px; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  opacity: 0; transition: opacity 0.14s ease; white-space: nowrap; max-width: 60vw; overflow: hidden; text-overflow: ellipsis; }
#tooltip.show { opacity: 1; }

/* ---------- Hint (bottom-right) ---------- */
.hint { position: fixed; bottom: 20px; right: 22px; z-index: 5; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
  color: var(--muted); text-align: right; line-height: 1.7; opacity: 0; transition: opacity 0.8s ease 0.8s; pointer-events: none; }
body.ready .hint { opacity: 0.65; }
body.panel-open .hint { opacity: 0; }

/* ---------- Menu button (mobile) ---------- */
#menu-btn { display: none; position: fixed; top: 18px; left: 16px; z-index: 9; width: 42px; height: 42px; border-radius: 12px;
  background: var(--glass); border: 1px solid var(--hair-soft); color: var(--white); font-size: 18px; cursor: pointer;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }

/* ---------- Loader ---------- */
#loader { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; background: var(--base);
  transition: opacity 0.9s ease; }
body.ready #loader { opacity: 0; pointer-events: none; }
#loader .l-inner { text-align: center; }
#loader .l-mark { font-family: var(--serif); font-size: 40px; color: var(--white); letter-spacing: 0.02em; }
#loader .l-mark em { font-style: italic; color: var(--gold); }
#loader .l-bar { width: 180px; height: 2px; margin: 18px auto 0; background: rgba(255,255,255,0.1); border-radius: 2px; overflow: hidden; }
#loader .l-bar i { display: block; height: 100%; width: 40%; background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: sweep 1.1s ease-in-out infinite; }
@keyframes sweep { 0% { transform: translateX(-120%); } 100% { transform: translateX(360%); } }
#loader .l-sub { font-family: var(--mono); font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--accent); margin-top: 16px; }

/* ---------- Focus visibility ---------- */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 6px; }
button:focus:not(:focus-visible) { outline: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  #menu-btn { display: block; }
  .masthead { top: 16px; left: auto; right: 16px; transform: none; text-align: right; }
  .masthead h1 { font-size: 20px; }
  #navigator { width: 260px; transform: translateX(-102%); transition: transform 0.4s cubic-bezier(0.16,1,0.3,1); opacity: 1; }
  body.nav-open #navigator { transform: none; }
  #toggles { top: auto; bottom: 74px; right: 50%; transform: translateX(50%); }
  #legend { bottom: 18px; font-size: 10px; padding: 6px 8px; max-width: 94vw; }
  .legend-title { display: none; }
  .hint { display: none; }
  #panel { width: 100vw; max-width: 100vw; height: 74vh; top: auto; bottom: 0; border-left: 0; border-top: 1px solid var(--hair);
    border-radius: 18px 18px 0 0; transform: translateY(102%); }
  #panel.open { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}