:root{--bg: #060912;--panel: #0f172a;--panel-2: #131f3a;--line: #1e2a4a;--text: #e2e8f0;--muted: #8aa0c6;--accent: #34d399;--accent-2: #38bdf8;--danger: #f87171;--warn: #fbbf24;--radius: 14px;--shadow: 0 10px 30px rgba(0, 0, 0, .45)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:radial-gradient(1200px 800px at 70% -10%,#122044 0%,var(--bg) 55%);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 18px;border-bottom:1px solid var(--line);background:#080c18b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2px}.brand-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 0 14px var(--accent-2)}.level-nav{display:flex;gap:8px}.level-tab{display:flex;flex-direction:column;align-items:flex-start;gap:1px;padding:6px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--muted);cursor:pointer;transition:all .15s ease}.level-tab:hover{border-color:var(--accent-2);color:var(--text)}.level-tab.active{background:linear-gradient(135deg,#34d3992e,#38bdf82e);border-color:var(--accent);color:var(--text)}.tab-id{font-weight:700;font-size:13px}.tab-mod{font-size:11px}.app-main{flex:1;min-height:0}.game-screen{display:flex;height:100%;gap:14px;padding:14px}.pane{min-height:0;min-width:0}.pane-game{flex:1 1 50%;display:flex;flex-direction:column;gap:10px}.pane-side{flex:1 1 50%;display:flex;flex-direction:column;gap:14px}.game-toolbar{display:flex;align-items:center;gap:10px}.btn{padding:9px 16px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-weight:600;font-size:14px;cursor:pointer;transition:all .15s ease}.btn:hover{border-color:var(--accent-2)}.btn-run{background:linear-gradient(135deg,var(--accent),#10b981);border-color:transparent;color:#04231a}.btn-run:hover{filter:brightness(1.08)}.grid-toggle{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}.coord{margin-left:auto;font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--accent-2);min-width:120px;text-align:right}.canvas-wrap{position:relative;display:flex;align-items:center;justify-content:center;flex:1;min-height:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.game-canvas canvas{display:block;border-radius:10px;box-shadow:var(--shadow)}.win-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#040812b8;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fade-in .25s ease}.win-card{text-align:center;padding:28px 36px;border-radius:18px;background:var(--panel-2);border:1px solid var(--accent);box-shadow:var(--shadow)}.win-card h2{margin:6px 0}.win-emoji{font-size:48px}.win-sub{color:var(--muted);font-size:14px}.status{padding:10px 14px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid var(--line);background:var(--panel)}.status-idle{color:var(--muted)}.status-playing{color:var(--accent-2)}.status-won{color:#052e1c;background:var(--accent);border-color:transparent}.status-lost,.status-error{color:#2a0606;background:var(--danger);border-color:transparent}.pane-instructions{flex:0 0 auto;max-height:42%;overflow:auto;padding:16px 18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}.instructions-head{display:flex;align-items:center;gap:10px}.instructions-head h2{margin:0;font-size:18px}.level-badge{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04231a;font-weight:800;font-size:12px;padding:3px 8px;border-radius:7px}.instructions-body{font-size:14px;line-height:1.55;color:#cdd9ef}.instructions-body p{margin:8px 0}.instructions-body code,.command-help code{font-family:ui-monospace,Menlo,monospace;background:#0b1220;border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:12.5px;color:var(--warn)}.command-help{margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}.command-help h3{margin:0 0 8px;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.command-help ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.command-help li{display:flex;flex-direction:column;gap:2px}.command-help li span{font-size:12.5px;color:var(--muted)}.pane-sandbox{flex:1;min-height:0;display:flex;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.text-editor{flex:1;min-height:0;overflow:auto}.blockly-placeholder{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:15px}.blockly-host{flex:1;min-height:0;min-width:0}.header-right{display:flex;align-items:center;gap:10px}.btn-small{padding:6px 12px;font-size:13px}.offline-badge{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#2a0606;background:var(--warn);padding:3px 8px;border-radius:6px}.level-tab.locked{opacity:.45;cursor:not-allowed}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:100%;max-width:420px;background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:32px 28px;text-align:center}.auth-card-wide{max-width:460px;text-align:left}.auth-card h1{margin:8px 0 4px;font-size:24px}.auth-logo{display:flex;justify-content:center;margin-bottom:8px}.auth-logo .brand-dot{width:40px;height:40px}.auth-sub{color:var(--muted);font-size:14px;line-height:1.5;margin:4px 0 20px}.auth-input{width:100%;padding:12px 14px;font-size:15px;border-radius:10px;border:1px solid var(--line);background:#0b1220;color:var(--text);outline:none}.auth-input:focus{border-color:var(--accent-2)}.field{display:block;margin-bottom:14px}.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:#cdd9ef;line-height:1.45;margin:6px 0 18px;cursor:pointer}.consent input{margin-top:3px}.auth-error{background:#f8717124;border:1px solid var(--danger);color:#fecaca;border-radius:10px;padding:10px 12px;font-size:13px;margin:14px 0}.auth-submit{width:100%;margin-top:16px;padding:12px;font-size:15px}.auth-actions{display:flex;justify-content:space-between;gap:10px;margin-top:8px}.auth-hint{color:var(--muted);font-size:13px;margin:14px 0}.resume-code{display:block;width:100%;margin:8px 0;padding:18px;font-family:ui-monospace,Menlo,monospace;font-size:26px;font-weight:800;letter-spacing:1px;color:var(--accent);background:#0b1220;border:2px dashed var(--accent);border-radius:12px;cursor:pointer}.resume-code:hover{background:#0e1730}.small-note{display:none}@keyframes fade-in{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}@media (max-width: 900px){.app-main,.app-header .level-nav{display:none}.small-note{display:flex;flex:1;align-items:center;justify-content:center;text-align:center;padding:24px;color:var(--muted);font-size:18px}.small-note-emoji{font-size:42px;margin-bottom:12px}}.tutorial-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;z-index:999}.tutorial-highlight{position:fixed;border:3px solid var(--accent);border-radius:8px;box-shadow:0 0 20px #34d39980;pointer-events:none;z-index:1000;animation:pulse 2s infinite}@keyframes pulse{0%,to{box-shadow:0 0 20px #34d39980}50%{box-shadow:0 0 30px #34d399cc}}.tutorial-card{position:fixed;background:var(--panel);border:2px solid var(--accent);border-radius:var(--radius);padding:24px;max-width:320px;z-index:1001;box-shadow:var(--shadow);animation:fade-in .3s ease-out}.tutorial-card h3{margin:0 0 12px;font-size:18px;color:var(--accent);font-weight:600}.tutorial-card p{margin:0 0 16px;font-size:14px;line-height:1.5;color:var(--text)}.tutorial-progress{display:flex;gap:8px;margin-bottom:16px;justify-content:center}.tutorial-dot{width:6px;height:6px;border-radius:50%;background:var(--line);transition:background .2s}.tutorial-dot.active{background:var(--accent)}.tutorial-next{width:100%;font-size:14px}