/*some Variables*/
:root {
--void: #02020a;
--panel: rgba(255,255,255,0.04);
--panel-solid: #0a0a14;
--border: rgba(255,255,255,0.09);
--accent: #c8ff00;
--accent2: #ff6b35;
--accent3: #00c8ff;
--text: #e8e8f0;
--muted: rgba(232,232,240,0.4);
--panel-width: 220px;
--panel-collapsed: 0px;
}


• { margin:0; padding:0; box-sizing:border-box; }
body {
background: var(--void);
color: var(--text);
font-family: 'Syne', sans-serif;
overflow: hidden;
height: 100vh;
width: 100vw;
cursor: crosshair;
user-select: none;
}


#stars { position:fixed; inset:0; pointer-events:none; z-index:0; }
canvas#sim { position:fixed; inset:0; z-index:1; }


#flash {
position:fixed; inset:0;
background:white; opacity:0;
pointer-events:none; z-index:50;
transition: opacity .05s;
}


#intro {
position:fixed; inset:0; z-index:100;
display:flex; flex-direction:column;
align-items:center; justify-content:center;
background:var(--void);
transition: opacity .8s ease;
}
.intro-title {
font-size: clamp(48px,10vw,96px);
font-weight:800; letter-spacing:16px;
color:var(--accent); text-transform:uppercase;
line-height:1; margin-bottom:12px;
animation: glitch 4s infinite;
}
@keyframes glitch {
0%,90%,100% { text-shadow:none }
92% { text-shadow:-3px 0 var(--accent2), 3px 0 #00ffff }
94% { text-shadow:3px 0 var(--accent2), -3px 0 #00ffff }
96% { text-shadow:none }
}
.intro-sub {
font-family:'Space Mono',monospace;
font-size:13px; letter-spacing:4px;
color:var(--muted); text-transform:uppercase;
margin-bottom:48px;
}
.intro-btn {
font-family:'Syne',sans-serif; font-weight:800;
font-size:13px; letter-spacing:4px; text-transform:uppercase;
padding:14px 40px; border:1px solid var(--accent);
background:transparent; color:var(--accent);
cursor:pointer; border-radius:4px;
transition:all .3s; position:relative; overflow:hidden;
}
.intro-btn::before {
content:''; position:absolute; inset:0;
background:var(--accent); transform:translateX(-100%);
transition:transform .3s; z-index:-1;
}
.intro-btn:hover::before { transform:translateX(0); }
.intro-btn:hover { color:var(--void); }


#topbar {
position:fixed; top:0; left:0; right:0;
padding:16px 24px; display:flex;
align-items:center; justify-content:space-between;
pointer-events:none; z-index:20;
background: linear-gradient(to bottom, rgba(2,2,10,0.95) 0%, transparent 100%);
}
.logo { display:flex; align-items:baseline; gap:10px; }
.logo-title {
font-size:20px; font-weight:800; letter-spacing:6px;
color:var(--accent); text-transform:uppercase;
}
.logo-sub {
font-family:'Space Mono',monospace; font-size:10px;
color:var(--muted); letter-spacing:2px; text-transform:uppercase;
}
#stats {
font-family:'Space Mono',monospace; font-size:11px;
color:var(--muted); text-align:right;
line-height:1.9; letter-spacing:1px;
}
#stats span { color:var(--accent); }

/* ─── Side Panel ────────────────────────────────────────────────── */
#panel {
position: fixed;
right: 0; top: 0; bottom: 0;
z-index: 30;
display: flex;
flex-direction: row;
align-items: stretch;
transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}
#panel.collapsed {
transform: translateX(var(--panel-width));
}
#panel-toggle {
width: 24px;
background: rgba(10,10,20,0.9);
border: 1px solid var(--border);
border-right: none;
border-radius: 10px 0 0 10px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
color: var(--muted);
font-size: 11px;
transition: all 0.2s;
margin: auto 0;
height: 60px;
backdrop-filter: blur(20px);
}
#panel-toggle:hover {
color: var(--accent);
background: rgba(200,255,0,0.06);
}
#panel-inner {
width: var(--panel-width);
height: 100%;
box-sizing: border-box;
overflow-y: auto;
overflow-x: hidden;
background: rgba(8,8,18,0.92);
border-left: 1px solid var(--border);
backdrop-filter: blur(30px);
padding: 60px 12px 20px 12px;
display: flex;
flex-direction: column;
gap: 8px;
scrollbar-width: thin;
scrollbar-color: var(--border) transparent;
}
#panel-inner::-webkit-scrollbar { width: 4px; }
#panel-inner::-webkit-scrollbar-track { background: transparent; }
#panel-inner::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }


.panel-section {
background: var(--panel);
border: 1px solid var(--border);
border-radius: 10px;
padding: 10px;  /* check*/
flex-shrink: 0;
}
.panel-label {
font-family:'Space Mono',monospace; font-size:9px;
letter-spacing:3px; text-transform:uppercase;
color:var(--muted); margin-bottom:10px;
}

.slider-group { margin-bottom:8px; }
.slider-group:last-child { margin-bottom:0; }
.slider-row {
display:flex; justify-content:space-between;
align-items:center; margin-bottom:4px;
}
.slider-name { font-size:11px; color:var(--text); }
.slider-val { font-family:'Space Mono',monospace; font-size:10px; color:var(--accent); }
.slider-hint { font-family:'Space Mono',monospace; font-size:9px; color:var(--muted); margin-top:3px; }
input[type=range] {
width:100%; height:3px; -webkit-appearance:none;
background:var(--border); border-radius:2px;
outline:none; cursor:pointer;
}
input[type=range]::-webkit-slider-thumb {
-webkit-appearance:none; width:12px; height:12px;
border-radius:50%; background:var(--accent);
cursor:pointer; box-shadow:0 0 8px var(--accent);
transition:transform .15s;
}
input[type=range]::-webkit-slider-thumb:hover { transform:scale(1.3); }

.btn-group { display:flex; flex-direction:column; gap:5px; }
.btn {
font-family:'Syne',sans-serif; font-size:10px;
font-weight:700; letter-spacing:1.5px; text-transform:uppercase;
padding:8px 10px; border-radius:7px;
border:1px solid var(--border); background:var(--panel);
color:var(--text); cursor:pointer; transition:all .2s;
text-align:center; backdrop-filter:blur(10px);
}
.btn:hover {
background:rgba(200,255,0,0.08);
border-color:var(--accent); color:var(--accent);
transform:translateX(-2px);
}
.btn.active {
background:rgba(200,255,0,0.12);
border-color:var(--accent); color:var(--accent);
}
.btn.danger:hover {
background:rgba(255,107,53,0.1);
border-color:var(--accent2); color:var(--accent2);
}
.btn.orbit-active {
background:rgba(0,200,255,0.12);
border-color:var(--accent3); color:var(--accent3);
}

.type-grid { display:grid; grid-template-columns:1fr 1fr; gap:5px; }
.type-btn {
font-family:'Space Mono',monospace; font-size:9px; letter-spacing:1px;
padding:7px 5px; border-radius:8px; border:1px solid var(--border);
background:var(--panel); color:var(--muted); cursor:pointer;
transition:all .2s; text-align:center;
display:flex; flex-direction:column; align-items:center; gap:4px;
}
.type-btn .dot {
width:13px; height:13px; border-radius:50%; display:block;
}
.type-btn:hover, .type-btn.active {
border-color:var(--accent); color:var(--accent);
background:rgba(200,255,0,0.06);
}

#zoom-controls {
position:fixed; left:20px; top:50%; transform:translateY(-50%);
z-index:20; display:flex; flex-direction:column; gap:6px;
}
.zoom-btn {
width:36px; height:36px;
background:rgba(10,10,20,0.85); border:1px solid var(--border);
border-radius:8px; color:var(--text); font-size:18px;
cursor:pointer; display:flex; align-items:center; justify-content:center;
transition:all .2s; backdrop-filter:blur(20px);
font-family:'Space Mono',monospace; line-height:1;
}
.zoom-btn.small { font-size:14px; }
.zoom-btn:hover {
background:rgba(200,255,0,0.1);
border-color:var(--accent); color:var(--accent);
}

#eventlog {
position:fixed; left:20px; bottom:80px;
font-family:'Space Mono',monospace; font-size:9px;
letter-spacing:1px; color:var(--muted);
z-index:20; pointer-events:none;
display:flex; flex-direction:column-reverse; gap:3px;
}
.event-item {
opacity:1; transition:opacity 2s; color:var(--accent2);
text-transform:uppercase; cursor:pointer;
pointer-events:all; padding:2px 4px;
border-radius:3px;
}
.event-item:hover { background:rgba(255,107,53,0.1); }
.event-item.fade { opacity:0; }

#event-detail {
position:fixed; bottom:24px; left:50%; transform:translateX(-50%);
background:rgba(8,8,20,0.97); border:1px solid var(--border);
border-radius:14px; padding:20px 24px;
min-width:320px; max-width:480px;
z-index:25; backdrop-filter:blur(30px);
transition:opacity .3s, transform .3s;
box-shadow:0 0 40px rgba(0,0,0,0.5);
}
#event-detail.hidden {
opacity:0; pointer-events:none;
transform:translateX(-50%) translateY(10px);
}
#event-detail-close {
position:absolute; top:12px; right:14px;
color:var(--muted); cursor:pointer; font-size:13px;
font-family:'Space Mono',monospace; transition:color .2s;
}
#event-detail-close:hover { color:var(--accent2); }
#event-detail-icon { font-size:28px; margin-bottom:8px; }
#event-detail-title {
font-size:14px; font-weight:800; letter-spacing:3px;
text-transform:uppercase; color:var(--accent);
margin-bottom:10px;
}
#event-detail-body {
font-family:'Space Mono',monospace; font-size:10px;
line-height:1.9; color:var(--muted); letter-spacing:0.5px;
}
#event-detail-body strong { color:var(--text); }

#hint {
position:fixed; bottom:24px; left:50%; transform:translateX(-50%);
font-family:'Space Mono',monospace; font-size:9px; letter-spacing:2px;
color:var(--muted); text-align:center;
pointer-events:none; z-index:20; text-transform:uppercase;
animation:pulse 3s ease-in-out infinite;
white-space:nowrap;
}
@keyframes pulse { 0%,100%{opacity:.3} 50%{opacity:.7} }

#orbit-hint {
position:fixed; bottom:48px; left:50%; transform:translateX(-50%);
font-family:'Space Mono',monospace; font-size:9px; letter-spacing:2px;
color:var(--accent3); text-align:center;
pointer-events:none; z-index:20; text-transform:uppercase;
opacity:0; transition:opacity .4s;
}
#orbit-hint.visible { opacity:0.8; }

#inspector {
position: fixed;
left: 66px; top: 50%;
transform: translateY(-50%);
width: 200px;
background: rgba(8,8,20,0.95);
border: 1px solid var(--border);
border-radius: 12px;
padding: 14px;
z-index: 20;
backdrop-filter: blur(30px);
transition: opacity .3s, transform .3s;
box-shadow: 0 0 30px rgba(0,0,0,0.5);
}
#inspector.hidden {
opacity: 0; pointer-events: none;
transform: translateY(-50%) translateX(-10px);
}
#inspector-header {
display: flex; align-items: center; gap: 8px;
margin-bottom: 12px; padding-bottom: 10px;
border-bottom: 1px solid var(--border);
}
#inspector-icon { font-size: 18px; }
#inspector-title {
font-size: 11px; font-weight: 800;
letter-spacing: 2px; text-transform: uppercase;
color: var(--accent); flex: 1;
}
#inspector-close {
color: var(--muted); cursor: pointer;
font-family: 'Space Mono', monospace;
font-size: 11px; transition: color .2s;
}
#inspector-close:hover { color: var(--accent2); }
#inspector-body {
font-family: 'Space Mono', monospace;
font-size: 9px; line-height: 2;
color: var(--muted); letter-spacing: 0.5px;
}
#inspector-body .stat-row {
display: flex; justify-content: space-between;
}
#inspector-body .stat-val { color: var(--accent); }
#inspector-actions {
display: flex; gap: 6px; margin-top: 12px;
}
.insp-btn {
flex: 1;
font-family: 'Space Mono', monospace;
font-size: 9px; letter-spacing: 1px; text-transform: uppercase;
padding: 7px 5px; border-radius: 6px;
border: 1px solid var(--border);
background: var(--panel); color: var(--muted);
cursor: pointer; text-align: center; transition: all .2s;
}
.insp-btn:hover {
border-color: var(--accent); color: var(--accent);
background: rgba(200,255,0,0.06);
}
.insp-btn.danger-btn:hover {
border-color: var(--accent2); color: var(--accent2);
background: rgba(255,107,53,0.06);
}
.insp-btn.active {
border-color: var(--accent3); color: var(--accent3);
background: rgba(0,200,255,0.08);
}

#gravity-hint {
position: fixed; bottom: 48px; left: 50%; transform: translateX(-50%);
font-family: 'Space Mono', monospace; font-size: 9px; letter-spacing: 2px;
color: #ff9944; text-align: center;
pointer-events: none; z-index: 20; text-transform: uppercase;
opacity: 0; transition: opacity .4s;
}
#gravity-hint.visible { opacity: 0.8; }

#follow-btn.active {
background: rgba(0,200,255,0.12);
border-color: var(--accent3); color: var(--accent3);
}

/* encyclopedia*/
.enc-open-btn {
pointer-events: all;
font-family: 'Space Mono', monospace;
font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
padding: 7px 14px; border-radius: 6px;
border: 1px solid var(--border);
background: rgba(200,255,0,0.07);
color: var(--accent); cursor: pointer; transition: all .2s;
}
.enc-open-btn:hover {
background: rgba(200,255,0,0.15);
border-color: var(--accent);
box-shadow: 0 0 12px rgba(200,255,0,0.2);
}

#encyclopedia {
position: fixed; inset: 0; z-index: 80;
background: rgba(2,2,10,0.96);
backdrop-filter: blur(30px);
display: flex; flex-direction: column;
opacity: 0; transform: translateY(20px);
transition: opacity .35s ease, transform .35s ease;
pointer-events: none;
}
#encyclopedia.open {
opacity: 1; transform: translateY(0); pointer-events: all;
}
#encyclopedia.hidden { display: none; }

#enc-header {
display: flex; align-items: center; justify-content: space-between;
padding: 28px 40px 20px 40px;
border-bottom: 1px solid var(--border); flex-shrink: 0;
}
#enc-title {
font-size: 22px; font-weight: 800; letter-spacing: 4px;
text-transform: uppercase; color: var(--accent);
}
#enc-subtitle {
font-family: 'Space Mono', monospace; font-size: 10px;
color: var(--muted); letter-spacing: 2px; margin-top: 4px;
}
#enc-close {
background: none; border: 1px solid var(--border);
color: var(--muted); font-size: 16px; cursor: pointer;
width: 36px; height: 36px; border-radius: 8px; transition: all .2s;
}
#enc-close:hover { color: var(--accent2); border-color: var(--accent2); }

#enc-content {
display: flex; flex: 1; overflow: hidden; gap: 0;
}

#enc-list {
width: 300px; flex-shrink: 0;
overflow-y: auto; padding: 16px;
border-right: 1px solid var(--border);
display: flex; flex-direction: column; gap: 6px;
scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
#enc-list::-webkit-scrollbar { width: 4px; }
#enc-list::-webkit-scrollbar-thumb { background: var(--border); }

.enc-item {
display: flex; align-items: center; gap: 12px;
padding: 12px 14px; border-radius: 10px;
border: 1px solid var(--border); border-left-width: 3px;
background: var(--panel); cursor: pointer; transition: all .2s;
}
.enc-item:hover { background: rgba(255,255,255,0.05); transform: translateX(3px); }
.enc-item.active { background: rgba(255,255,255,0.07); border-color: var(--accent); }
.enc-item-icon { font-size: 22px; flex-shrink: 0; }
.enc-item-text { flex: 1; }
.enc-item-title {
font-size: 12px; font-weight: 700; letter-spacing: 1px;
text-transform: uppercase; color: var(--text);
}
.enc-item-sub {
font-family: 'Space Mono', monospace; font-size: 9px;
color: var(--muted); margin-top: 2px;
}
.enc-item-play { font-size: 11px; color: var(--accent); opacity: 0.6; flex-shrink: 0; }


#enc-detail {
flex: 1; padding: 40px 50px;
overflow-y: auto;
display: flex; flex-direction: column; gap: 16px;
}
#enc-detail.hidden { display: none; }
#enc-detail-icon { font-size: 52px; line-height: 1; }
#enc-detail-title {
font-size: 28px; font-weight: 800; letter-spacing: 4px; text-transform: uppercase;
}
#enc-detail-subtitle {
font-family: 'Space Mono', monospace; font-size: 11px;
color: var(--muted); letter-spacing: 2px;
}
#enc-detail-fact {
font-family: 'Space Mono', monospace; font-size: 11px;
color: var(--accent); letter-spacing: 1px;
padding: 12px 16px;
border: 1px solid rgba(200,255,0,0.2);
border-radius: 8px;
background: rgba(200,255,0,0.04);
line-height: 1.7;
}
#enc-detail-desc {
font-size: 14px; line-height: 1.85;
color: rgba(232,232,240,0.75);
max-width: 620px;
}
#enc-detail-actions {
display: flex; gap: 12px; margin-top: 8px;
}
#enc-simulate-btn, #enc-link-btn {
font-family: 'Syne', sans-serif; font-weight: 700;
font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
padding: 11px 20px; border-radius: 8px; cursor: pointer; transition: all .2s;
}
#enc-simulate-btn {
background: rgba(200,255,0,0.1);
border: 1px solid var(--accent); color: var(--accent);
}
#enc-simulate-btn:hover { background: var(--accent); color: var(--void); }
#enc-link-btn {
background: var(--panel); border: 1px solid var(--border); color: var(--muted);
}
#enc-link-btn:hover { border-color: var(--accent3); color: var(--accent3); }

/*  Empty dtl state  */
#enc-detail-empty {
flex: 1; display: flex; align-items: center; justify-content: center;
color: var(--muted); font-family: 'Space Mono', monospace;
font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
}