/* ── BACKGROUND ── */
#bg{position:fixed;inset:0;z-index:var(--z-base);pointer-events:none;background:var(--bg);}
#bg::after{display:none;}

/* ── PARTICLES ── */
.particle{position:fixed;border-radius:50%;pointer-events:none;z-index:var(--z-base);}
@keyframes drift{0%{transform:translateY(0) translateX(0);opacity:0.5}50%{opacity:1}100%{transform:translateY(-100px) translateX(30px);opacity:0}}

/* ── HEADER ── */
#header{position:fixed;top:0;left:0;right:0;z-index:var(--z-nav);padding:1rem 1.5rem 3rem;
  background:linear-gradient(to bottom,var(--bg) 40%,transparent);
  display:flex;flex-direction:column;align-items:flex-start;pointer-events:none;}
.title-wrap{pointer-events:none;}
.title-main{font-family:var(--font-head);font-size:clamp(1.2rem,2.5vw,1.8rem);font-weight:700;
  color:var(--text-primary);letter-spacing:-0.01em;line-height:1;}
.title-sub{font-size:clamp(0.6rem,1vw,0.7rem);color:var(--text-secondary);letter-spacing:0.15em;
  text-transform:uppercase;margin-top:0.35rem;opacity:0.9;}
[data-theme="light"] .title-main{color:var(--text-primary) !important;}
[data-theme="light"] .title-sub{color:var(--text-secondary) !important;}
/* ── SEARCH BAR ── */
#search-wrap{position:fixed;top:6rem;left:1.5rem;z-index:var(--z-search);
  display:flex;flex-direction:column;align-items:flex-start;gap:0.7rem;pointer-events:all;}
#search-input{background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius-full);padding:0.5rem 1rem 0.5rem 2.2rem;color:var(--text-primary);
  font-family:var(--font-sans);font-size:var(--text-sm);width:240px;outline:none;
  transition:all var(--transition-fast);backdrop-filter:var(--glass-blur);box-shadow:var(--shadow-1);}
#search-input::placeholder{color:var(--text-secondary);opacity:0.5;}
#search-input:focus{border-color:var(--accent);width:300px;box-shadow:0 0 0 3px var(--accent-dim),var(--shadow-2);}
#search-icon{position:absolute;left:1.35rem;color:var(--text-secondary);font-size:0.75rem;pointer-events:none;}
#search-results{position:absolute;top:2.5rem;left:0;width:240px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  overflow:hidden;display:none;max-height:220px;overflow-y:auto;
  box-shadow:var(--shadow-2);}
#search-results.show{display:block;}
.sr-item{padding:0.5rem 0.9rem;cursor:pointer;font-size:var(--text-sm);color:var(--text-secondary);
  border-bottom:1px solid var(--border);display:flex;align-items:center;gap:0.5rem;transition:background var(--transition-fast);}
.sr-item:hover{background:var(--accent-primary-dim);color:var(--text-primary);}
.sr-item:last-child{border-bottom:none;}
.sr-item .sri-icon{font-size:1rem;}
.sr-item .sri-name{font-weight:500;}
.sr-item .sri-sub{font-size:var(--text-2xs);color:var(--text-secondary);margin-left:auto;}

/* ── SEARCH PILLS (extinct toggle, hominins tab) ── */
.search-pill{font-family:var(--font-sans);font-size:var(--text-sm);padding:0.3rem 0.75rem;
  border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);
  cursor:pointer;color:var(--text-secondary);white-space:nowrap;flex-shrink:0;
  display:inline-flex;align-items:center;gap:6px;transition:all var(--transition-fast);}
.search-pill:hover{border-color:var(--accent-primary);color:var(--text-primary);background:var(--accent-primary-dim);}
.search-pill:active{transform:scale(0.97);}
[data-theme="light"] .search-pill{background:var(--surface);border-color:var(--border);color:var(--text-secondary);}
[data-theme="light"] .search-pill:hover{border-color:var(--accent-primary);color:var(--accent-primary);}
#hominins-tab{margin-top:3.3rem;}

/* ── BREADCRUMB ── */
#breadcrumb{position:fixed;top:0.6rem;left:50%;transform:translateX(-50%);z-index:var(--z-nav);
  display:flex;align-items:center;gap:0;pointer-events:all;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-full);
  padding:0.3rem 0.8rem;
  max-width:min(600px,calc(100vw - 20rem));overflow-x:auto;white-space:nowrap;}
.bc-item{font-size:var(--text-2xs);color:var(--text-secondary);cursor:pointer;white-space:nowrap;
  padding:0 0.1rem;transition:color var(--transition-fast);letter-spacing:0.04em;}
.bc-item:hover{color:var(--accent-primary);}
.bc-item.active{color:var(--text-primary);cursor:default;}
.bc-sep{font-size:var(--text-2xs);color:var(--text-secondary);opacity:0.4;padding:0 0.3rem;}
#breadcrumb.hidden{display:none;}

/* ── NAV CONTROLS (Back / Home) ── */
#nav-ctrl{position:fixed;top:4.2rem;left:1.2rem;z-index:calc(var(--z-nav) + 50);display:flex;align-items:center;gap:0.35rem;
  pointer-events:all;opacity:0;transform:translateY(-6px);transition:opacity 0.25s ease,transform 0.25s ease;visibility:hidden;}
#nav-ctrl.visible{opacity:1;transform:translateY(0);visibility:visible;}
.nav-btn{padding:0.3rem 0.7rem;background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:8px;color:var(--accent);font-size:var(--text-sm);font-family:var(--font-body);
  cursor:pointer;display:inline-flex;align-items:center;gap:0.3rem;transition:all var(--transition-fast);
  backdrop-filter:var(--glass-blur);letter-spacing:0.03em;white-space:nowrap;box-shadow:var(--shadow-1);}
.nav-btn:hover{background:var(--accent-primary-dim);border-color:var(--accent);color:var(--parchment);box-shadow:var(--shadow-2);}
.nav-btn:active{transform:scale(0.97);}
.nav-btn:disabled{opacity:0.3;cursor:default;pointer-events:none;}
.nav-btn .nav-arrow{display:inline-block;font-size:var(--text-sm);line-height:1;}
[data-theme="light"] .nav-btn{background:var(--glass-bg);border-color:var(--glass-border);color:var(--text-secondary);}
[data-theme="light"] .nav-btn:hover{background:var(--accent-primary-dim);border-color:var(--accent-primary);color:var(--accent-primary);}
[dir="rtl"] #nav-ctrl{left:auto;right:1.2rem;flex-direction:row-reverse;}
[dir="rtl"] .nav-arrow{transform:scaleX(-1);}

/* ── Reveal Panel ── */
.reveal-panel {
  position: fixed;
  left: auto;
  right: 12px; /* align with the right-side zoom/dice rail */
  bottom: 116px; /* push down further, below the dice column */
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 12px;
  background: rgba(12, 8, 6, 0.82);
  border: 1px solid rgba(62, 169, 143, 0.4);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  color: var(--parchment);
  font: 500 11px/1.3 var(--font-sans, 'Inter', sans-serif);
  min-width: 200px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.4);
}
.reveal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  color: #3ea98f;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 10px;
}
.reveal-help {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid #3ea98f;
  color: #3ea98f;
  cursor: help;
  font-weight: 700;
  line-height: 1;
}
.reveal-slider-row { display: flex; align-items: center; gap: 10px; }
#reveal-depth-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  cursor: pointer;
  background: linear-gradient(to right,
    #3ea98f 0%,
    #3ea98f var(--reveal-pct, 0%),
    rgba(255,255,255,0.12) var(--reveal-pct, 0%),
    rgba(255,255,255,0.12) 100%);
  outline: none;
}
#reveal-depth-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #6fd3b3;
  border: 2px solid #0a0a0a;
  box-shadow: 0 0 6px rgba(62,169,143,0.55);
  cursor: pointer;
}
#reveal-depth-slider::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #6fd3b3;
  border: 2px solid #0a0a0a;
  box-shadow: 0 0 6px rgba(62,169,143,0.55);
  cursor: pointer;
  border-width: 2px;
}
.reveal-depth-value {
  min-width: 20px;
  text-align: right;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: #3ea98f;
}
.reveal-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  opacity: 0.6;
}
.reveal-buttons { display: flex; gap: 6px; }
.reveal-btn {
  flex: 1;
  padding: 5px 8px;
  font-size: 10px;
  background: rgba(62, 169, 143, 0.12);
  border: 1px solid rgba(62, 169, 143, 0.4);
  border-radius: 6px;
  color: var(--parchment);
  cursor: pointer;
  font: 500 11px var(--font-sans, 'Inter', sans-serif);
}
.reveal-btn:hover { background: rgba(62, 169, 143, 0.25); }
.reveal-species-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid rgba(62, 169, 143, 0.2);
  cursor: pointer;
}
.reveal-species-warn { color: #6fd3b3; cursor: help; }
[dir="rtl"] .reveal-panel { right: auto; left: 16px; }