:root{--bg:#f6f7fb;--bg-elevated:rgba(255, 255, 255, 0.72);--panel:#ffffff;--text:#0f172a;--text-soft:#475569;--text-muted:#64748b;--border:rgba(15, 23, 42, 0.08);--border-strong:rgba(15, 23, 42, 0.14);--primary:#111827;--primary-hover:#0b1220;--primary-contrast:#ffffff;--success:#047857;--warning:#b45309;--danger:#b91c1c;--shadow-sm:0 6px 16px rgba(15, 23, 42, 0.06);--shadow-md:0 18px 40px rgba(15, 23, 42, 0.08);--radius-sm:12px;--radius-md:18px;--radius-lg:24px;--container:1200px;--header-height:72px;--transition:180ms ease;--font-sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--terminal-bg:#0b1020;--terminal-border:rgba(255, 255, 255, 0.06)}*,::after,::before{box-sizing:border-box}html{font-size:16px;color-scheme:light;overflow-x:hidden}body{margin:0;min-height:100vh;overflow-x:hidden;font-family:var(--font-sans);color:var(--text);background:radial-gradient(circle at top left,rgba(59,130,246,.08),transparent 32%),radial-gradient(circle at top right,rgba(168,85,247,.08),transparent 28%),var(--bg)}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0;background:0 0}textarea{resize:vertical}.container{width:min(var(--container),calc(100vw - 32px));margin:0 auto}.page-shell{min-height:100vh;display:flex;flex-direction:column;padding-top:var(--header-height)}.main{flex:1;padding:28px 0 40px}.topbar{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(18px);background:rgba(246,247,251,.8);border-bottom:1px solid var(--border)}.topbar-inner{height:var(--header-height);display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:-.02em}.brand-badge{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#111827,#1f2937);color:#fff;box-shadow:var(--shadow-sm)}.topbar-actions{display:flex;align-items:center;gap:10px}.hero{display:grid;gap:10px;margin-bottom:28px}.eyebrow{display:inline-flex;align-items:center;gap:8px;width:fit-content;padding:8px 12px;border-radius:999px;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-soft);font-size:.9rem}.page-title{margin:0;font-size:clamp(2rem, 4vw, 3.4rem);line-height:1;letter-spacing:-.05em}.page-subtitle{margin:0;max-width:760px;color:var(--text-muted);font-size:1rem;line-height:1.7}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.btn,.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:0 16px;border-radius:12px;border:1px solid transparent;font-weight:600;transition:transform var(--transition),background var(--transition),border-color var(--transition),box-shadow var(--transition)}.btn:hover,.button:hover{transform:translateY(-1px)}.btn:disabled,.button:disabled{opacity:.55;cursor:not-allowed;transform:none}.button.is-disabled{opacity:.55;pointer-events:none;transform:none}.button-primary{background:var(--primary);color:var(--primary-contrast);box-shadow:var(--shadow-sm)}.button-primary:hover{background:var(--primary-hover)}.button-secondary{background:#fff;color:var(--text);border-color:var(--border)}.button-danger{background:rgba(185,28,28,.08);color:var(--danger);border-color:rgba(185,28,28,.12)}.button-ghost{background:0 0;color:var(--text-soft);border-color:var(--border)}.input,.select,.textarea{width:100%;border:1px solid var(--border);border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);transition:border-color var(--transition),box-shadow var(--transition)}.input:focus,.select:focus,.textarea:focus{outline:0;border-color:rgba(17,24,39,.28);box-shadow:0 0 0 4px rgba(15,23,42,.06)}.label{display:block;margin-bottom:8px;font-size:.92rem;font-weight:600;color:var(--text-soft)}.helper-text{color:var(--text-muted);font-size:.92rem;line-height:1.5}.badge{display:inline-flex;align-items:center;gap:8px;min-height:30px;padding:0 10px;border-radius:999px;font-size:.84rem;font-weight:600;border:1px solid var(--border);color:var(--text-soft);background:rgba(255,255,255,.85)}.badge-success{color:var(--success);background:rgba(4,120,87,.08);border-color:rgba(4,120,87,.14)}.badge-warning{color:var(--warning);background:rgba(180,83,9,.08);border-color:rgba(180,83,9,.14)}.badge-danger{color:var(--danger);background:rgba(185,28,28,.08);border-color:rgba(185,28,28,.14)}.error-box,.info-box,.success-box{padding:14px 16px;border-radius:14px;font-size:.95rem;line-height:1.6}.error-box{background:rgba(185,28,28,.08);color:var(--danger);border:1px solid rgba(185,28,28,.12)}.success-box{background:rgba(4,120,87,.08);color:var(--success);border:1px solid rgba(4,120,87,.12)}.info-box{background:rgba(15,23,42,.05);color:var(--text-soft);border:1px solid var(--border)}.modal-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;overflow-y:auto;background:rgba(8,12,20,.72);backdrop-filter:blur(6px);z-index:2000}.modal-card{width:min(100%,520px);max-height:calc(100vh - 48px);overflow-y:auto;background:rgba(18,24,38,.96);border:1px solid rgba(255,255,255,.08);border-radius:18px;box-shadow:0 24px 80px rgba(0,0,0,.35);padding:22px}.modal-card-editor{width:min(100%,740px);max-height:calc(100vh - 48px);overflow-y:auto;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:28px}.stack{display:grid;gap:14px}.inline{display:flex;align-items:center;gap:12px}.space-between{display:flex;align-items:center;justify-content:space-between;gap:16px}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.section{display:grid;gap:18px}.section-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.section-title{margin:0;font-size:1.1rem;font-weight:700;letter-spacing:-.02em}.section-description{margin:0;color:var(--text-muted);font-size:.95rem}.status-row{display:flex;flex-wrap:wrap;gap:10px}.count-chip{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 7px;border-radius:999px;font-size:.78rem;font-weight:700;background:var(--border-strong);color:var(--text-muted);vertical-align:middle}.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.filter-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,.7);color:var(--text-soft);font-size:.84rem;font-weight:600;cursor:pointer;flex-shrink:0;white-space:nowrap;transition:background var(--transition),border-color var(--transition),color var(--transition)}.filter-badge:hover{background:rgba(255,255,255,.95);border-color:var(--border-strong);color:var(--text)}.filter-badge.active{background:var(--primary);color:var(--primary-contrast);border-color:var(--primary)}.empty-state{display:grid;gap:10px;place-items:start;align-self:start;padding:24px;border:1px dashed var(--border-strong);border-radius:var(--radius-md);color:var(--text-muted);background:rgba(255,255,255,.55)}.hidden{display:none!important}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.login-layout{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(460px,100%);padding:28px;border-radius:var(--radius-lg);background:var(--bg-elevated);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-md);backdrop-filter:blur(18px)}.login-header{display:grid;gap:10px;margin-bottom:24px}.login-title{margin:0;font-size:1.9rem;letter-spacing:-.04em}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,0.8fr);gap:20px;align-items:start;min-width:0}.dashboard-grid>*{min-height:calc(100vh - var(--header-height) - 96px);min-width:0;display:grid;grid-template-rows:auto auto minmax(0,1fr);overflow:hidden}.lab-list,.template-list{display:grid;gap:16px;min-height:0;overflow:auto;align-content:start;align-items:start;justify-items:stretch;padding-right:4px}.lab-card,.template-card{padding:22px;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--panel);box-shadow:var(--shadow-sm);transition:transform var(--transition),box-shadow var(--transition);display:grid;grid-template-rows:auto auto 1fr auto;align-content:start;overflow:hidden;min-height:220px}.lab-card:hover,.template-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.lab-card h3,.template-card h3{margin:0 0 8px;font-size:1.05rem;letter-spacing:-.02em}.lab-card p,.template-card p{margin:0;color:var(--text-muted);line-height:1.6}.template-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.lab-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.lab-shell{min-height:100vh;display:flex;flex-direction:column;padding-top:var(--header-height)}.lab-main{flex:1;width:min(1400px,calc(100vw - 24px));margin:16px auto 20px;display:grid;grid-template-columns:360px minmax(0,1fr);gap:16px;min-width:0}.lab-main>*{min-width:0}.lab-sidebar{display:flex;flex-direction:column;gap:16px}.lab-panel{padding:22px;border-radius:20px;background:rgba(255,255,255,.9);border:1px solid var(--border);box-shadow:var(--shadow-sm);min-width:0}.lab-panel h2,.lab-panel h3{margin:0 0 12px;letter-spacing:-.03em}.lab-panel li,.lab-panel p{color:var(--text-soft);line-height:1.7}.instructions-list{margin:0;padding-left:20px;display:grid;gap:10px}.lab-terminal-wrap{min-height:calc(100vh - var(--header-height) - 48px);display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden;border-radius:22px;border:1px solid var(--terminal-border);background:var(--terminal-bg);box-shadow:0 22px 60px rgba(2,6,23,.35)}.lab-terminal-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.02)}.lab-terminal-title{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.88);font-weight:600}.traffic-lights{display:flex;align-items:center;gap:8px}.traffic-lights span{width:10px;height:10px;border-radius:999px;display:inline-block}.traffic-lights span:first-child{background:#fb7185}.traffic-lights span:nth-child(2){background:#fbbf24}.traffic-lights span:nth-child(3){background:#34d399}.lab-terminal{min-height:0;height:100%;padding:0;overflow:hidden}.lab-terminal .xterm{max-width:100%}@media (max-width:1100px){.dashboard-grid,.lab-main{grid-template-columns:1fr}.lab-terminal-wrap{min-height:520px}}@media (max-width:720px){.main{padding-top:20px}.section-header,.space-between{flex-direction:column;align-items:stretch}.lab-panel,.login-card{padding:20px}.page-title{font-size:2rem}.grid-2{grid-template-columns:1fr}.topbar-actions .btn-label{display:none}.topbar-actions .button{padding:0;min-width:44px}.lab-terminal-actions .btn-label{display:none}.lab-terminal-actions .button{padding:0;min-width:38px;justify-content:center}.modal-overlay{padding:12px;align-items:flex-start}.modal-card,.modal-card-editor{max-height:calc(100vh - 24px);margin:auto 0}}
.ai-hint-badge{background:rgba(59,130,246,.1);color:#3b82f6;border-color:rgba(59,130,246,.2);animation:ai-pulse 2s ease-in-out infinite}@keyframes ai-pulse{0%,100%{opacity:1}50%{opacity:.6}}.ai-response{background:rgba(59,130,246,.04);border:1px solid rgba(59,130,246,.12);border-radius:12px;padding:14px;font-size:.88rem;line-height:1.65;color:var(--text-soft);max-height:300px;overflow-y:auto;word-break:break-word}.ai-response p{margin:0 0 10px}.ai-response p:last-child{margin-bottom:0}.ai-response strong{color:var(--text);font-weight:600}.ai-response code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.84em;background:rgba(15,23,42,.07);border-radius:5px;padding:1px 5px}.ai-pre{background:rgba(15,23,42,.06);border:1px solid var(--border);border-radius:8px;padding:10px 12px;overflow-x:auto;margin:8px 0}.ai-pre code{background:none;padding:0;font-size:.85em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.emi-widget{position:fixed;bottom:24px;right:24px;z-index:1000;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.mobile-menu-btn{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border-radius:12px;border:1px solid var(--border);background:0 0;color:var(--text-soft);cursor:pointer;flex-shrink:0}
.mobile-menu-overlay{position:fixed;inset:0;z-index:2050;background:rgba(8,12,20,.4);backdrop-filter:blur(2px)}
.mobile-menu-panel{position:fixed;top:0;right:0;height:100%;width:260px;background:var(--panel);border-left:1px solid var(--border);z-index:2100;transform:translateX(100%);transition:transform 220ms cubic-bezier(.4,0,.2,1);padding:20px 16px;display:flex;flex-direction:column;gap:4px;box-shadow:-8px 0 32px rgba(8,12,20,.12)}
.mobile-menu-panel.open{transform:translateX(0)}
.mobile-menu-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;border:none;background:0 0;color:var(--text-soft);font-weight:600;font-size:.95rem;font-family:inherit;cursor:pointer;text-align:left;width:100%;transition:background var(--transition),color var(--transition)}
.mobile-menu-item:hover{background:rgba(15,23,42,.05);color:var(--text)}
.mobile-menu-item.danger{color:var(--danger)}
.mobile-menu-item.danger:hover{background:rgba(185,28,28,.06)}
@media (max-width:540px){.topbar-actions{display:none}.mobile-menu-btn{display:flex}}
.emi-fab{width:56px;height:56px;border-radius:999px;background:linear-gradient(135deg,#1e3a5f,#2563eb);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.45rem;box-shadow:0 4px 20px rgba(37,99,235,.4);transition:transform .18s ease,box-shadow .18s ease;position:relative;flex-shrink:0}
.emi-fab:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(37,99,235,.55)}
.emi-fab-badge{position:absolute;top:-2px;right:-2px;width:14px;height:14px;border-radius:999px;background:#3b82f6;border:2.5px solid #fff;animation:ai-pulse 2s ease-in-out infinite}
.emi-panel{width:320px;background:#fff;border:1px solid rgba(15,23,42,.1);border-radius:18px;box-shadow:0 18px 50px rgba(15,23,42,.14);overflow:hidden;animation:emi-slide-in .18s ease}
@keyframes emi-slide-in{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.emi-panel-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 12px;border-bottom:1px solid rgba(15,23,42,.07);background:linear-gradient(135deg,rgba(37,99,235,.06),rgba(37,99,235,.01))}
.emi-panel-title{font-weight:700;font-size:.95rem;letter-spacing:-.02em;color:var(--text)}
.emi-panel-close{width:28px;height:28px;border-radius:8px;border:none;background:rgba(15,23,42,.06);color:var(--text-soft);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.85rem;transition:background .12s}
.emi-panel-close:hover{background:rgba(15,23,42,.12)}
.emi-panel-body{padding:14px 16px;display:grid;gap:10px;max-height:360px;overflow-y:auto}
.check-list{margin:0;padding:0;list-style:none;display:grid;gap:7px}.check-item{display:flex;align-items:flex-start;gap:9px;padding:9px 12px;border-radius:10px;font-size:.88rem;line-height:1.5;background:rgba(15,23,42,.04);border:1px solid var(--border);color:var(--text-soft);transition:background .18s,border-color .18s,color .18s}.check-item.check-pass{background:rgba(4,120,87,.08);border-color:rgba(4,120,87,.2);color:var(--success)}.check-item.check-fail{background:rgba(185,28,28,.06);border-color:rgba(185,28,28,.12);color:var(--danger)}.check-item.check-neutral{background:none;border-color:transparent;padding-left:0;padding-right:0}.check-icon{flex-shrink:0;font-size:.9rem;margin-top:1px}.check-label{flex:1}.badge-system{color:#0369a1;background:rgba(3,105,161,.08);border-color:rgba(3,105,161,.18)}.badge-custom{color:#065f46;background:rgba(6,95,70,.08);border-color:rgba(6,95,70,.16)}.template-warnings-box{border:1px solid rgba(217,119,6,.28);background:rgba(254,243,199,.55);border-radius:12px;padding:14px 16px;display:grid;gap:8px}.template-warnings-header{font-weight:600;color:#92400e;font-size:.9rem}.template-warnings-list{margin:0;padding-left:18px;display:grid;gap:6px}.template-warnings-list li{font-size:.86rem;color:#78350f;line-height:1.55}.template-warnings-list code{background:rgba(120,53,15,.1);border-radius:4px;padding:1px 5px;font-size:.82rem;word-break:break-all;font-family:monospace}.template-warnings-line{font-weight:600}.template-warnings-footer{font-size:.83rem;color:#92400e;margin:0}
/* ── IDE ─────────────────────────────────────────────────────────────────── */
.ide-tab-bar{display:flex;gap:2px;align-items:center}
.ide-tab{padding:5px 14px;border-radius:8px;border:none;background:rgba(255,255,255,.07);color:rgba(255,255,255,.55);font-size:.82rem;font-weight:600;cursor:pointer;transition:background .15s,color .15s}
.ide-tab:hover{background:rgba(255,255,255,.12);color:rgba(255,255,255,.8)}
.ide-tab.active{background:rgba(255,255,255,.15);color:#fff}
.lab-terminal-wrap>.lab-ide{grid-row:2;grid-column:1;min-height:0;overflow:hidden;display:flex;flex-direction:column;background:#1e2030}
.lab-terminal-wrap>.lab-terminal{grid-row:2;grid-column:1}
.ide-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;background:rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.06);flex-shrink:0;overflow:hidden}
.ide-current-file{font-size:.8rem;color:rgba(255,255,255,.5);font-family:ui-monospace,monospace;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1}
.ide-toolbar-actions{display:flex;gap:4px;flex-shrink:0}
.ide-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:5px 10px;border-radius:7px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.07);color:rgba(255,255,255,.75);font-size:.78rem;font-weight:600;cursor:pointer;transition:background .12s,border-color .12s,color .12s;font-family:inherit;white-space:nowrap}
.ide-btn:hover{background:rgba(255,255,255,.13);color:#fff;border-color:rgba(255,255,255,.2)}
.ide-btn:disabled{opacity:.45;cursor:not-allowed}
.ide-btn-run{background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.2);color:#34d399}
.ide-btn-run:hover{background:rgba(52,211,153,.2);border-color:rgba(52,211,153,.35);color:#6ee7b7}
.ide-layout{display:grid;grid-template-columns:200px minmax(0,1fr);flex:1;min-height:0;overflow:hidden}
.ide-file-tree{overflow-y:auto;border-right:1px solid rgba(255,255,255,.06);background:#181a2a;padding:6px 0;display:flex;flex-direction:column;gap:0;font-size:.8rem}
.ide-tree-list{list-style:none;margin:0;padding:0}
.ide-tree-collapsed{display:none}
.ide-tree-item{margin:0}
.ide-tree-row{display:flex;align-items:center;gap:5px;padding:4px 8px;cursor:pointer;border-radius:5px;margin:1px 4px;color:rgba(255,255,255,.65);transition:background .1s,color .1s;min-width:0;position:relative}
.ide-tree-row:hover{background:rgba(255,255,255,.07);color:#fff}
.ide-tree-row.ide-tree-active{background:rgba(59,130,246,.18);color:#93c5fd}
.ide-tree-icon{font-size:.7rem;opacity:.7;flex-shrink:0;width:14px;text-align:center}
.ide-tree-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.ide-tree-delete{display:none;border:none;background:none;color:rgba(255,99,99,.6);cursor:pointer;padding:0 2px;font-size:.75rem;line-height:1;border-radius:3px;margin-left:2px;flex-shrink:0}
.ide-tree-row:hover .ide-tree-delete{display:block}
.ide-tree-delete:hover{color:#fb7185;background:rgba(255,99,99,.12)}
.ide-tree-loading,.ide-tree-error,.ide-tree-empty{padding:10px 12px;font-size:.78rem;color:rgba(255,255,255,.35)}
.ide-tree-error{color:rgba(255,99,99,.6)}
.ide-tree-content{flex:1}
.ide-create-row{display:flex;gap:4px;padding:6px 8px;border-bottom:1px solid rgba(255,255,255,.06);background:rgba(255,255,255,.03);flex-shrink:0}
.ide-create-input{flex:1;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);border-radius:6px;padding:4px 8px;color:#fff;font-size:.78rem;font-family:ui-monospace,monospace;outline:none}
.ide-create-input:focus{border-color:rgba(59,130,246,.5);background:rgba(59,130,246,.07)}
.ide-editor-wrap{position:relative;min-height:0;overflow:hidden;display:flex;flex-direction:column}
.ide-empty-state{display:flex;align-items:center;justify-content:center;height:100%;color:rgba(255,255,255,.25);font-size:.88rem;padding:20px;text-align:center}
.ide-editor-wrap .cm-editor{height:100%;font-size:.85rem}
.ide-editor-wrap .cm-scroller{overflow:auto}