/* ═══════════════════════════════════════════
   Solar System Explorer — Styles
   ═══════════════════════════════════════════ */

  :root {
    --bg:#020408; --panel:rgba(6,18,35,0.92); --border:rgba(0,200,255,0.18);
    --accent:#00c8ff; --accent2:#ff6b35; --text:#c8e6f5; --muted:#4a7a99; --gold:#ffd700;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  body{background:var(--bg);color:var(--text);font-family:'Exo 2',sans-serif;overflow-x:hidden;min-height:100vh;}
  #starfield{position:fixed;inset:0;z-index:0;pointer-events:none;}
  .app{position:relative;z-index:1;display:flex;flex-direction:column;min-height:100vh;}

  header{text-align:center;padding:2rem 1rem 1rem;border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(0,200,255,0.04) 0%,transparent 100%);}
  header h1{font-family:'Orbitron',sans-serif;font-size:clamp(1.6rem,4vw,3rem);font-weight:900;letter-spacing:0.12em;color:#fff;text-shadow:0 0 30px rgba(0,200,255,0.6),0 0 60px rgba(0,200,255,0.2);}
  header p{font-family:'Share Tech Mono',monospace;color:var(--muted);font-size:0.78rem;letter-spacing:0.2em;margin-top:0.4rem;text-transform:uppercase;}

  .tabs{display:flex;align-items:center;justify-content:center;gap:0.4rem;padding:0.5rem 0.75rem;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;}
  .tabs::-webkit-scrollbar{display:none;}
  .tab-btn{font-family:'Orbitron',sans-serif;font-size:0.65rem;letter-spacing:0.12em;padding:0.42rem 0.9rem;background:transparent;border:1px solid var(--border);color:var(--muted);cursor:pointer;transition:all 0.25s;white-space:nowrap;flex-shrink:0;clip-path:polygon(6px 0%,100% 0%,calc(100% - 6px) 100%,0% 100%);}
  .tab-btn:hover{border-color:var(--accent);color:var(--accent);}
  .tab-btn.active{background:rgba(0,200,255,0.12);border-color:var(--accent);color:var(--accent);box-shadow:0 0 14px rgba(0,200,255,0.2);}
  .tab-search{flex-shrink:0;width:100px;position:relative;z-index:200;}

  #orrery-section{display:none;}
  #orrery-section.active{display:block;}
  .orrery-wrap{display:flex;flex-direction:column;align-items:center;padding:1rem 0.25rem;gap:0.8rem;}

  .orrery-controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;justify-content:center;}

  .view-toggle{display:flex;align-items:center;background:rgba(0,200,255,0.05);border:1px solid var(--border);}
  .view-btn{font-family:'Orbitron',sans-serif;font-size:0.62rem;letter-spacing:0.1em;padding:0.45rem 1rem;background:transparent;border:none;color:var(--muted);cursor:pointer;transition:all 0.25s;}
  .view-btn.active{background:rgba(0,200,255,0.18);color:var(--accent);}
  .view-btn:hover:not(.active){color:var(--text);}

  .ctrl-group{display:flex;align-items:center;gap:0.5rem;}
  .ctrl-group label{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--muted);letter-spacing:0.12em;}
  .ctrl-group input[type=range]{width:85px;accent-color:var(--accent);}
  .ctrl-val{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--accent);min-width:2.8rem;}

  #orrery-canvas{width:100%;cursor:pointer;display:block;touch-action:none;}
  .orrery-hint{font-family:'Share Tech Mono',monospace;font-size:0.7rem;color:var(--muted);letter-spacing:0.1em;text-align:center;}

  /* PLANET GRID */
  #planets-section{display:none;}
  #planets-section.active{display:block;padding:1rem;}
  .planet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem;max-width:1100px;margin:0 auto;}
  .planets-subheading{max-width:1100px;margin:2.5rem auto 1rem;padding:1.2rem 0 1rem;border-top:1px solid var(--border);}
  .planets-subheading-title{font-family:'Orbitron',sans-serif;font-size:0.85rem;font-weight:800;letter-spacing:0.15em;color:var(--accent);margin-bottom:0.5rem;}
  .planets-subheading-desc{font-family:'Share Tech Mono',monospace;font-size:0.65rem;color:var(--muted);letter-spacing:0.1em;line-height:1.7;}
  .planet-card{background:var(--panel);border:1px solid var(--border);padding:1.2rem;cursor:pointer;transition:all 0.25s;position:relative;overflow:hidden;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));}
  .planet-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,200,255,0.04) 0%,transparent 60%);opacity:0;transition:opacity 0.25s;}
  .planet-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,200,255,0.15);}
  .planet-card:hover::before{opacity:1;}
  .card-icon{width:60px;height:60px;border-radius:50%;margin:0 auto 0.8rem;box-shadow:0 0 20px rgba(255,255,255,0.1);}
  .card-name{font-family:'Orbitron',sans-serif;font-size:0.85rem;font-weight:600;text-align:center;letter-spacing:0.1em;margin-bottom:0.3rem;}
  .card-type{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--muted);text-align:center;letter-spacing:0.15em;text-transform:uppercase;}
  .card-teaser{margin-top:0.8rem;font-size:0.75rem;color:var(--muted);text-align:center;line-height:1.5;}

  /* MODAL */
  .modal-overlay{position:fixed;inset:0;z-index:100;background:rgba(2,4,8,0.88);display:flex;align-items:center;justify-content:center;padding:1rem;opacity:0;pointer-events:none;transition:opacity 0.3s;backdrop-filter:blur(4px);}
  .modal-overlay.open{opacity:1;pointer-events:all;}
  .modal{background:var(--panel);border:1px solid var(--border);max-width:700px;width:100%;max-height:90vh;overflow-y:auto;padding:2rem;position:relative;clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));transform:scale(0.95);transition:transform 0.3s;}
  .modal-overlay.open .modal{transform:scale(1);}
  .modal-close{position:absolute;top:1rem;right:1rem;background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;width:32px;height:32px;font-size:1rem;transition:all 0.2s;display:flex;align-items:center;justify-content:center;}
  .modal-close:hover{border-color:var(--accent2);color:var(--accent2);}
  .modal-header{display:flex;align-items:center;gap:1.5rem;margin-bottom:1.5rem;padding-bottom:1.2rem;border-bottom:1px solid var(--border);}
  .modal-planet-icon{width:80px;height:80px;border-radius:50%;flex-shrink:0;}
  .modal-title{font-family:'Orbitron',sans-serif;font-size:1.6rem;font-weight:800;letter-spacing:0.08em;}
  .modal-subtitle{font-family:'Share Tech Mono',monospace;font-size:0.72rem;color:var(--accent);letter-spacing:0.2em;margin-top:0.2rem;}
  .modal-desc{font-size:0.88rem;line-height:1.7;color:var(--text);margin-bottom:1.5rem;}
  .stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:0.75rem;margin-bottom:1.5rem;}
  .stat-box{background:rgba(0,200,255,0.04);border:1px solid var(--border);padding:0.75rem;}
  .stat-label{font-family:'Share Tech Mono',monospace;font-size:0.6rem;color:var(--muted);letter-spacing:0.2em;text-transform:uppercase;margin-bottom:0.3rem;}
  .stat-value{font-family:'Orbitron',sans-serif;font-size:0.9rem;font-weight:600;color:var(--accent);}
  .facts-title{font-family:'Orbitron',sans-serif;font-size:0.75rem;letter-spacing:0.15em;color:var(--accent2);margin-bottom:0.75rem;}
  .facts-list{list-style:none;}
  .facts-list li{font-size:0.82rem;color:var(--text);padding:0.4rem 0;border-bottom:1px solid rgba(255,255,255,0.04);padding-left:1rem;position:relative;line-height:1.5;}
  .facts-list li::before{content:'▸';position:absolute;left:0;color:var(--accent);}

  /* COMPARE */
  #compare-section{display:none;}
  #compare-section.active{display:block;padding:1rem;}
  .compare-wrap{max-width:1000px;margin:0 auto;}
  .compare-selectors{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap;}
  .compare-select-box{flex:1;min-width:200px;}
  .compare-select-box label{display:block;font-family:'Share Tech Mono',monospace;font-size:0.7rem;color:var(--muted);letter-spacing:0.15em;margin-bottom:0.4rem;}
  .compare-select-box select{width:100%;background:var(--panel);border:1px solid var(--border);color:var(--text);padding:0.6rem 0.8rem;font-family:'Exo 2',sans-serif;font-size:0.88rem;cursor:pointer;outline:none;}
  .compare-select-box select:focus{border-color:var(--accent);}
  .compare-table{width:100%;border-collapse:collapse;font-size:0.82rem;}
  .compare-table th{font-family:'Orbitron',sans-serif;font-size:0.75rem;letter-spacing:0.1em;padding:1rem;text-align:center;border-bottom:1px solid var(--border);}
  .compare-table th:first-child{text-align:left;color:var(--muted);}
  .compare-table td{padding:0.75rem 1rem;border-bottom:1px solid rgba(255,255,255,0.04);text-align:center;}
  .compare-table td:first-child{text-align:left;font-family:'Share Tech Mono',monospace;font-size:0.7rem;color:var(--muted);letter-spacing:0.1em;}
  .compare-table tr:hover td{background:rgba(0,200,255,0.03);}
  .highlight-best{color:var(--gold);font-weight:600;}
  .compare-bar-row td{padding:0.4rem 1rem;}
  .bar-track{height:6px;background:rgba(255,255,255,0.06);border-radius:3px;overflow:hidden;margin-top:4px;}
  .bar-fill{height:100%;border-radius:3px;transition:width 0.6s ease;}
  .planet-icon-th{width:70px;height:70px;border-radius:50%;margin:0 auto 0.5rem;}


  /* MOONS */
  .moons-section{margin-top:1.5rem;padding-top:1.2rem;border-top:1px solid var(--border);}
  .moons-title{font-family:'Orbitron',sans-serif;font-size:0.75rem;letter-spacing:0.15em;color:var(--accent2);margin-bottom:0.8rem;}
  .moons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:0.5rem;}
  .moon-chip{background:rgba(0,200,255,0.05);border:1px solid var(--border);padding:0.5rem 0.7rem;cursor:pointer;transition:all 0.2s;display:flex;flex-direction:column;gap:0.2rem;}
  .moon-chip:hover{border-color:var(--accent);background:rgba(0,200,255,0.1);}
  .moon-chip-name{font-family:'Orbitron',sans-serif;font-size:0.7rem;font-weight:600;color:var(--text);}
  .moon-chip-sub{font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);letter-spacing:0.08em;}
  .moons-note{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--muted);letter-spacing:0.1em;margin-top:0.6rem;font-style:italic;}
  /* Moon detail modal (second layer) */
  .moon-overlay{position:fixed;inset:0;z-index:200;background:rgba(2,4,8,0.92);display:flex;align-items:center;justify-content:center;padding:1rem;opacity:0;pointer-events:none;transition:opacity 0.25s;backdrop-filter:blur(6px);}
  .moon-overlay.open{opacity:1;pointer-events:all;}
  .moon-modal{background:var(--panel);border:1px solid rgba(255,107,53,0.35);max-width:560px;width:100%;max-height:88vh;overflow-y:auto;padding:1.8rem;position:relative;clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));transform:scale(0.95);transition:transform 0.25s;}
  .moon-overlay.open .moon-modal{transform:scale(1);}
  .moon-modal-close{position:absolute;top:0.8rem;right:0.8rem;background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;width:28px;height:28px;font-size:0.9rem;display:flex;align-items:center;justify-content:center;transition:all 0.2s;}
  .moon-modal-close:hover{border-color:var(--accent2);color:var(--accent2);}
  .moon-header{display:flex;align-items:center;gap:1.2rem;margin-bottom:1.2rem;padding-bottom:1rem;border-bottom:1px solid var(--border);}
  .moon-icon{width:56px;height:56px;border-radius:50%;flex-shrink:0;background:radial-gradient(circle at 35% 35%,#d0d0d0,#606060,#202020);}
  .moon-name{font-family:'Orbitron',sans-serif;font-size:1.2rem;font-weight:800;letter-spacing:0.08em;}
  .moon-latin{font-family:'Share Tech Mono',monospace;font-size:0.72rem;color:var(--accent);letter-spacing:0.15em;font-style:italic;margin-top:0.15rem;}
  .moon-parent{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--muted);letter-spacing:0.12em;margin-top:0.25rem;}

  /* MISSION TIMELINE */
  .missions-section{margin-top:1.5rem;padding-top:1.2rem;border-top:1px solid var(--border);}
  .missions-title{font-family:'Orbitron',sans-serif;font-size:0.75rem;letter-spacing:0.15em;color:var(--accent2);margin-bottom:1rem;}
  .timeline{position:relative;padding-left:1.4rem;}
  .timeline::before{content:'';position:absolute;left:0.35rem;top:0;bottom:0;width:1px;background:linear-gradient(180deg,var(--accent) 0%,rgba(0,200,255,0.1) 100%);}
  .tl-item{position:relative;margin-bottom:0.9rem;}
  .tl-item::before{content:'';position:absolute;left:-1.08rem;top:0.35rem;width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 6px var(--accent);}
  .tl-item.tl-landmark::before{background:var(--gold);box-shadow:0 0 8px var(--gold);}
  .tl-item.tl-active::before{background:#44ff88;box-shadow:0 0 8px #44ff88;}
  .tl-year{font-family:'Orbitron',sans-serif;font-size:0.62rem;font-weight:700;color:var(--accent);letter-spacing:0.12em;margin-bottom:0.12rem;}
  .tl-item.tl-landmark .tl-year{color:var(--gold);}
  .tl-item.tl-active .tl-year{color:#44ff88;}
  .tl-mission{font-family:'Share Tech Mono',monospace;font-size:0.7rem;color:var(--text);letter-spacing:0.05em;line-height:1.45;}
  .tl-agency{font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);margin-top:0.08rem;letter-spacing:0.08em;}
  .tl-legend{display:flex;gap:1rem;margin-bottom:0.8rem;flex-wrap:wrap;}
  .tl-legend-item{display:flex;align-items:center;gap:0.4rem;font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);letter-spacing:0.08em;}
  .tl-legend-dot{width:7px;height:7px;border-radius:50%;}
  /* SCALE */
  #scale-section{display:none;}
  #scale-section.active{display:block;}
  .analogy-card{background:var(--panel);border:1px solid var(--border);padding:0.9rem 1rem;}
  .analogy-planet{font-family:'Orbitron',sans-serif;font-size:0.75rem;font-weight:700;letter-spacing:0.1em;margin-bottom:0.3rem;}
  .analogy-size{font-family:'Share Tech Mono',monospace;font-size:0.88rem;color:var(--accent);margin-bottom:0.2rem;}
  .analogy-obj{font-family:'Exo 2',sans-serif;font-size:0.78rem;color:var(--muted);font-style:italic;}
  /* BEYOND */
  #beyond-section{display:none;}
  #beyond-section.active{display:block;}
  .beyond-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;}
  .beyond-card{background:rgba(6,18,35,0.85);border:1px solid var(--border);border-radius:8px;padding:1rem 1.2rem;cursor:pointer;transition:all 0.3s ease;position:relative;overflow:hidden;}
  .beyond-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:8px 0 0 8px;}
  .beyond-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,0.4);}
  .beyond-card.active{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 20px rgba(74,158,255,0.3);background:rgba(74,158,255,0.08);}
  .beyond-card.selected{border-color:var(--accent);box-shadow:0 0 12px rgba(74,158,255,0.4);background:rgba(74,158,255,0.06);}
  .beyond-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:0.5rem;}
  .beyond-card-left{flex:1;min-width:0;}
  .beyond-title{font-family:'Orbitron',sans-serif;font-size:0.9rem;font-weight:800;letter-spacing:0.1em;color:#fff;margin-bottom:0.3rem;}
  .beyond-subtitle{font-family:'Share Tech Mono',monospace;font-size:0.62rem;color:var(--accent);letter-spacing:0.15em;margin-bottom:0.6rem;}
  .beyond-key-stat{font-family:'Share Tech Mono',monospace;font-size:0.68rem;color:var(--muted);letter-spacing:0.05em;}
  .beyond-key-stat span{font-weight:700;}
  .beyond-desc{font-size:0.82rem;line-height:1.7;color:var(--text);margin:0.8rem 0;}
  .beyond-facts{list-style:none;margin:0;padding:0;}
  .beyond-facts li{font-size:0.78rem;color:var(--text);padding:0.3rem 0;border-bottom:1px solid rgba(255,255,255,0.04);padding-left:1rem;position:relative;line-height:1.5;}
  .beyond-facts li::before{content:'▸';position:absolute;left:0;color:var(--accent2);}
  .beyond-tooltip{position:fixed;pointer-events:none;z-index:9999;padding:8px 14px;border-radius:6px;font:0.72rem/1.6 'Share Tech Mono',monospace;color:#fff;background:rgba(0,0,0,0.92);border:1px solid rgba(74,158,255,0.5);display:none;max-width:260px;}

  /* TOP BAR — removed, search now lives in tab row */
  .search-wrap{flex:1;position:relative;max-width:440px;}
  .search-input{width:100%;background:rgba(0,0,0,0.4);border:1px solid var(--border);color:var(--text);padding:0.42rem 0.8rem 0.42rem 2rem;font-family:'Share Tech Mono',monospace;font-size:0.76rem;letter-spacing:0.05em;outline:none;transition:border-color 0.2s;}
  .search-input:focus{border-color:var(--accent);}
  .search-input::placeholder{color:var(--muted);}
  .search-icon{position:absolute;left:0.6rem;top:50%;transform:translateY(-50%);color:var(--muted);font-size:0.82rem;pointer-events:none;}
  .search-results{position:absolute;top:calc(100% + 2px);left:0;right:0;background:rgba(4,12,26,0.98);border:1px solid var(--border);z-index:9999;max-height:300px;overflow-y:auto;box-shadow:0 8px 32px rgba(0,0,0,0.6);}
  .search-result-item{padding:0.5rem 0.85rem;cursor:pointer;border-bottom:1px solid rgba(255,255,255,0.04);display:flex;align-items:center;gap:0.65rem;transition:background 0.12s;}
  .search-result-item:hover{background:rgba(0,200,255,0.1);}
  .sr-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;}
  .sr-name{font-family:'Orbitron',sans-serif;font-size:0.7rem;font-weight:600;letter-spacing:0.07em;}
  .sr-sub{font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);letter-spacing:0.07em;}
  /* TOP BAR ICON BUTTONS */
  .icon-btn{background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:all 0.2s;flex-shrink:0;}
  .icon-btn:hover{border-color:var(--accent);color:var(--accent);}
  /* TABS — sticky */
  .tabs{position:sticky;top:0;z-index:40;background:var(--bg);border-bottom:1px solid var(--border);justify-content:center;overflow:visible;}
  .tab-search .search-input{font-size:0.68rem;padding:0.35rem 0.7rem 0.35rem 1.8rem;}
  .tab-search .search-icon{font-size:0.75rem;}
  /* ORRERY CONTROLS — single compact row */
  .orrery-controls{display:flex;align-items:center;gap:0.5rem;padding:0.5rem 0.75rem;background:rgba(0,200,255,0.03);border-bottom:1px solid var(--border);flex-wrap:wrap;}
  /* SETTINGS DROPDOWN */
  .settings-wrap{position:relative;}
  .settings-btn{font-family:'Orbitron',sans-serif;font-size:0.62rem;letter-spacing:0.1em;padding:0.4rem 0.75rem;background:transparent;border:1px solid var(--border);color:var(--muted);cursor:pointer;transition:all 0.2s;display:flex;align-items:center;gap:0.35rem;}
  .settings-btn:hover,.settings-btn.open{border-color:var(--accent);color:var(--accent);background:rgba(0,200,255,0.08);}
  .settings-panel{position:absolute;top:calc(100% + 4px);left:0;min-width:220px;background:rgba(4,12,26,0.98);border:1px solid var(--border);z-index:100;padding:0.75rem;display:none;box-shadow:0 8px 32px rgba(0,0,0,0.6);}
  .settings-panel.open{display:block;}
  .settings-group-label{font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);letter-spacing:0.2em;text-transform:uppercase;margin-bottom:0.5rem;margin-top:0.75rem;padding-bottom:0.25rem;border-bottom:1px solid var(--border);}
  .settings-group-label:first-child{margin-top:0;}
  .setting-row{display:flex;align-items:center;gap:0.6rem;padding:0.32rem 0;cursor:pointer;user-select:none;}
  .setting-row:hover .setting-label{color:var(--text);}
  .setting-row input[type=checkbox]{accent-color:var(--accent);width:13px;height:13px;cursor:pointer;flex-shrink:0;}
  .setting-label{font-family:'Share Tech Mono',monospace;font-size:0.65rem;color:var(--muted);letter-spacing:0.08em;}

  /* SLIDE-IN PANEL */
  .side-panel-overlay{position:fixed;inset:0;z-index:150;pointer-events:none;}
  .side-panel-overlay.open{pointer-events:all;}
  .side-panel-backdrop{position:absolute;inset:0;background:rgba(2,4,8,0.55);opacity:0;transition:opacity 0.3s;backdrop-filter:blur(3px);}
  .side-panel-overlay.open .side-panel-backdrop{opacity:1;}
  .side-panel{position:absolute;top:0;right:0;width:min(480px,100vw);height:100%;background:rgba(6,18,35,0.97);border-left:1px solid var(--border);overflow-y:auto;transform:translateX(100%);transition:transform 0.32s cubic-bezier(0.22,1,0.36,1);}
  .side-panel-overlay.open .side-panel{transform:translateX(0);}
  .side-panel-close{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:0.9rem 1.2rem;background:rgba(6,18,35,0.98);border-bottom:1px solid var(--border);}
  .side-panel-close-btn{background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;width:28px;height:28px;font-size:0.85rem;display:flex;align-items:center;justify-content:center;transition:all 0.2s;flex-shrink:0;}
  .side-panel-close-btn:hover{border-color:var(--accent2);color:var(--accent2);}
  .side-panel-back{background:none;border:none;color:var(--muted);cursor:pointer;font-family:'Share Tech Mono',monospace;font-size:0.65rem;letter-spacing:0.1em;display:flex;align-items:center;gap:0.4rem;padding:0;transition:color 0.2s;}
  .side-panel-back:hover{color:var(--accent);}
  .side-panel-content{padding:1.5rem 1.5rem 3rem;}
  /* SHOP PANEL — slides in from left */
  .shop-panel{position:absolute;top:0;left:0;width:min(340px,100vw);height:100%;background:rgba(5,14,28,0.97);border-right:1px solid rgba(255,107,53,0.25);overflow-y:auto;transform:translateX(-100%);transition:transform 0.35s cubic-bezier(0.22,1,0.36,1);}
  .side-panel-overlay.open .shop-panel{transform:translateX(0);}
  .shop-header{position:sticky;top:0;z-index:10;padding:0.85rem 1.1rem;background:rgba(5,14,28,0.98);border-bottom:1px solid rgba(255,107,53,0.2);display:flex;align-items:center;justify-content:space-between;}
  .shop-header-title{font-family:'Orbitron',sans-serif;font-size:0.72rem;font-weight:700;letter-spacing:0.12em;color:var(--accent2);}
  .shop-header-sub{font-family:'Share Tech Mono',monospace;font-size:0.58rem;color:var(--muted);letter-spacing:0.1em;margin-top:0.18rem;}
  .shop-body{padding:0.9rem;}
  .shop-card{background:rgba(255,107,53,0.04);border:1px solid rgba(255,107,53,0.18);margin-bottom:0.8rem;overflow:hidden;transition:border-color 0.2s;}
  .shop-card:hover{border-color:rgba(255,107,53,0.55);}
  .shop-card-img{width:100%;height:160px;object-fit:contain;display:block;background:rgba(255,255,255,0.97);padding:8px;}
  .shop-card-img-placeholder{width:100%;height:80px;display:flex;align-items:center;justify-content:center;font-size:2rem;background:rgba(255,107,53,0.06);}
  .shop-card-body{padding:0.7rem 0.8rem 0.85rem;}
  .shop-card-label{font-family:'Share Tech Mono',monospace;font-size:0.56rem;color:var(--accent2);letter-spacing:0.18em;text-transform:uppercase;margin-bottom:0.25rem;}
  .shop-card-title{font-family:'Exo 2',sans-serif;font-size:0.8rem;font-weight:600;color:var(--text);line-height:1.4;margin-bottom:0.3rem;}
  .shop-card-desc{font-family:'Exo 2',sans-serif;font-size:0.72rem;color:var(--muted);line-height:1.5;margin-bottom:0.65rem;}
  .shop-btn{display:block;width:100%;text-align:center;text-decoration:none;font-family:'Orbitron',sans-serif;font-size:0.62rem;letter-spacing:0.1em;padding:0.5rem;background:rgba(255,107,53,0.12);border:1px solid rgba(255,107,53,0.45);color:var(--accent2);transition:all 0.2s;cursor:pointer;}
  .shop-btn:hover{background:rgba(255,107,53,0.22);border-color:var(--accent2);}
  .shop-disclaimer{font-family:'Share Tech Mono',monospace;font-size:0.55rem;color:var(--muted);letter-spacing:0.06em;line-height:1.5;padding:0.75rem 0.9rem;border-top:1px solid rgba(255,107,53,0.1);margin-top:0.5rem;}
  /* On mobile, shop panel is hidden (too cramped with both panels) */
  @media (max-width: 600px) { .shop-panel { display: none; } }

  /* PLANET HOVER TOOLTIP */
  .planet-tooltip{position:fixed;z-index:80;background:rgba(4,12,26,0.92);border:1px solid var(--border);padding:0.35rem 0.7rem;font-family:'Share Tech Mono',monospace;font-size:0.65rem;color:var(--text);letter-spacing:0.08em;pointer-events:none;opacity:0;transition:opacity 0.15s;white-space:nowrap;}
  .planet-tooltip.show{opacity:1;}

  ::-webkit-scrollbar{width:6px;}
  ::-webkit-scrollbar-track{background:var(--bg);}
  ::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
  ::-webkit-scrollbar-thumb:hover{background:var(--accent);}
  footer{text-align:center;padding:1.5rem;font-family:'Share Tech Mono',monospace;font-size:0.65rem;color:var(--muted);letter-spacing:0.15em;border-top:1px solid var(--border);margin-top:auto;}

  /* ══════════════════════════════════════════════
     MOBILE — responsive breakpoints
     ══════════════════════════════════════════════ */

  /* Tablet & below (≤768px) */
  @media (max-width: 768px) {
    /* Header — compact */
    header { padding: 1rem 1rem 0.75rem; }
    header h1 { font-size: clamp(1.1rem, 6vw, 1.8rem); letter-spacing: 0.06em; }
    header p { font-size: 0.62rem; letter-spacing: 0.12em; }

    /* Top bar — search full width, share button stays */
    .tab-search { width: 150px; }

    /* Tabs — horizontal scroll, no wrap */
    .tabs {
      justify-content: flex-start;
      overflow-x: auto;
      flex-wrap: nowrap;
      gap: 0.3rem;
      padding: 0.6rem 0.6rem;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .tabs::-webkit-scrollbar { display: none; }
    .tab-btn {
      font-size: 0.58rem;
      padding: 0.4rem 0.75rem;
      white-space: nowrap;
      flex-shrink: 0;
      letter-spacing: 0.08em;
    }

    /* Orrery controls — wrap into two compact rows */
    .orrery-controls {
      gap: 0.4rem;
      padding: 0.45rem 0.6rem;
      justify-content: flex-start;
    }
    .ctrl-group input[type=range] { width: 70px; }
    .ctrl-val { min-width: 2.2rem; }
    .settings-btn { font-size: 0.58rem; padding: 0.38rem 0.6rem; }

    /* Settings panel — anchor to left edge on mobile */
    .settings-panel { left: 0; right: auto; min-width: 200px; }

    /* Orrery canvas — tighter padding */
    .orrery-wrap { padding: 0.25rem 0; gap: 0.4rem; }

    /* Side panel — full width on mobile */
    .side-panel { width: 100vw; }
    .side-panel-content { padding: 1rem 1rem 3rem; }
    .modal-title { font-size: 1.2rem; }
    .modal-header { gap: 0.9rem; }
    .modal-planet-icon { width: 58px; height: 58px; }
    .stats-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 0.5rem; }

    /* Planet grid — 2 columns minimum on tablet */
    .planet-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.75rem; }
    .card-icon { width: 50px; height: 50px; }

    /* Moons grid — 2 columns */
    .moons-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }

    /* Compare — stack selectors */
    .compare-selectors { flex-direction: column; gap: 0.6rem; margin-bottom: 1.2rem; }
    .compare-select-box { min-width: unset; }
    .compare-table th, .compare-table td { padding: 0.5rem 0.5rem; font-size: 0.72rem; }
    .compare-table th:first-child { display: none; }
    .compare-table td:first-child { display: none; }

    /* Scale — reduce padding */
    #scale-section > div { padding: 0.75rem 0.5rem; }

    /* Beyond — reduce padding */
    #beyond-section > div { padding: 0.75rem 0.6rem; }
    .beyond-cards { grid-template-columns: 1fr; }
    .beyond-title { font-size: 0.82rem; }

    /* Analogy grid — 1 col on small screens */
    #analogy-grid { grid-template-columns: 1fr; }

    /* Planet tooltip — hide on touch (no hover) */
    .planet-tooltip { display: none; }

    /* Footer */
    footer { font-size: 0.55rem; padding: 1rem; }
  }

  /* Phone (≤480px) */
  @media (max-width: 480px) {
    header h1 { font-size: clamp(1rem, 7vw, 1.4rem); }
    header p { display: none; }

    .planet-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
    .card-icon { width: 44px; height: 44px; }
    .card-name { font-size: 0.72rem; }

    .ctrl-group input[type=range] { width: 55px; }
    .ctrl-val { min-width: 1.9rem; font-size: 0.58rem; }
    .ctrl-group label { font-size: 0.55rem; }

    /* Make all interactive elements touch-safe (44px min target) */
    .tab-btn { min-height: 36px; }
    .view-btn, .icon-btn, .settings-btn { min-height: 34px; }
    #btn-pause { min-height: 34px; }

    /* Dwarf planet grid — 2 columns */
    #dwarf-grid { grid-template-columns: repeat(2, 1fr); }

    /* Analogy grid */
    #analogy-grid { grid-template-columns: 1fr; }

    /* Compare table — very compact */
    .compare-table { font-size: 0.68rem; }
    .planet-icon-th { width: 44px; height: 44px; }

    /* Side panel */
    .side-panel-content { padding: 0.8rem 0.8rem 3rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
  }