:root{--blue: #2563eb;--mint: #22c55e;--coral: #f97316;--yellow: #facc15;--ink: #111827;--muted: #6b7280;--bg: #f8fafc;--border: #e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:var(--bg)}button,input,select{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr}.sidebar{background:#fff;border-right:1px solid var(--border);padding:18px;display:flex;flex-direction:column;gap:8px}.brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}.brand.big{justify-content:center;font-size:28px}.logo{width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:inset -6px -6px #22c55e59}.nav,.icon-text{border:0;background:transparent;display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--ink)}.nav.active{background:#eaf1ff;color:var(--blue);font-weight:700}.sidebar-footer{margin-top:auto;display:grid;gap:8px;color:var(--muted)}.main{min-width:0}.session-warning{position:fixed;top:12px;right:12px;z-index:5;background:#fff7ed;color:#9a3412;border:1px solid #fed7aa;border-radius:8px;padding:10px 12px;box-shadow:0 10px 30px #11182714}.login-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at top left,#dbeafe,transparent 35%),var(--bg)}.login-box{width:min(380px,100%);background:#fff;border:1px solid var(--border);border-radius:8px;padding:28px;display:grid;gap:14px;box-shadow:0 24px 60px #11182714}.login-box p{text-align:center;color:var(--muted);margin:0 0 8px}input,select{width:100%;border:1px solid var(--border);border-radius:8px;padding:11px 12px;background:#fff}.primary{border:0;border-radius:8px;padding:11px 14px;background:var(--blue);color:#fff;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px}.primary.secondary{background:var(--ink)}.primary:disabled{opacity:.5;cursor:not-allowed}.error{color:#b91c1c;background:#fee2e2;padding:10px;border-radius:8px}.notice{margin:0 0 14px;color:#9a3412;background:#fff7ed;border:1px solid #fed7aa;padding:10px 12px;border-radius:8px}.notice.ok{color:#166534;background:#dcfce7;border-color:#bbf7d0}.messenger{height:100vh;display:grid;grid-template-columns:320px 1fr}.chat-list{background:#fff;border-right:1px solid var(--border);padding:18px;overflow:auto}.chat-list h2,.chat-panel h2{margin:0 0 14px}.chat-row{width:100%;text-align:left;background:#fff;border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:8px;display:grid;gap:4px}.chat-row span{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-row.active{border-color:var(--blue);background:#f8fbff}.chat-panel{display:grid;grid-template-rows:auto 1fr auto;height:100vh}.chat-panel header,.game-screen header{background:#fff;border-bottom:1px solid var(--border);padding:18px;display:flex;justify-content:space-between;align-items:center}.chat-panel header span{color:var(--muted)}.messages{padding:18px;overflow:auto;display:flex;flex-direction:column;gap:10px}.empty-inline{color:var(--muted);text-align:center;padding:28px}.chat-status{padding:8px 14px;background:#fff7ed;color:#9a3412;border-top:1px solid #fed7aa}.bubble{max-width:min(680px,82%);background:#fff;border:1px solid var(--border);border-radius:8px;padding:12px;align-self:flex-start}.bubble.mine{align-self:flex-end;background:#dbeafe;border-color:#bfdbfe;border-bottom-right-radius:3px}.bubble.theirs{border-bottom-left-radius:3px}.bubble.mine strong{color:var(--blue)}.bubble p{margin:6px 0}.bubble a{color:var(--blue);display:block}.composer{display:grid;grid-template-columns:auto 1fr auto;gap:10px;padding:14px;background:#fff;border-top:1px solid var(--border)}.composer button,.upload{border:0;border-radius:8px;background:var(--blue);color:#fff;width:44px;display:grid;place-items:center}.composer button:disabled{opacity:.5;cursor:not-allowed}.upload input{display:none}.empty{display:grid;place-items:center;color:var(--muted)}.work{padding:24px}.admin-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px}.admin-grid section{background:#fff;border:1px solid var(--border);border-radius:8px;padding:16px;display:grid;gap:10px;align-content:start}.table{display:grid;gap:6px}.table div{display:grid;grid-template-columns:1fr auto auto auto;gap:10px;padding:8px;border-bottom:1px solid var(--border);align-items:center}.table div.selected{background:#f8fbff;outline:1px solid #bfdbfe;border-radius:8px}.user-cell{border:0;background:transparent;text-align:left;display:grid;gap:2px;padding:0}.user-cell span{color:var(--muted);font-size:13px}.status-pill{border-radius:999px;padding:4px 8px;font-size:12px;background:#f3f4f6;color:var(--muted)}.status-pill.active{background:#dcfce7;color:#166534}.status-pill.blocked{background:#fee2e2;color:#991b1b}.status-pill.archived{background:#f3f4f6;color:#4b5563}.row-actions{display:inline-flex;gap:6px}.row-actions button{border:1px solid var(--border);border-radius:6px;background:#fff;padding:5px 7px}.split-actions{display:grid;grid-template-columns:1fr auto;gap:8px}.segmented{display:inline-flex;gap:4px;background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:4px}.segmented button{border:0;background:transparent;border-radius:6px;padding:6px 9px}.segmented button.active{background:#fff;color:var(--blue);font-weight:700;box-shadow:0 1px 2px #11182714}.link-list{display:grid;gap:8px;max-height:180px;overflow:auto}.link-list div{border:1px solid var(--border);border-radius:8px;padding:8px;display:grid;gap:4px}.link-card strong{font-size:15px;word-break:normal}.link-card code{color:var(--muted);font-size:11px;word-break:break-all}.link-card small{color:var(--muted)}.link-footer{display:flex!important;grid-template-columns:none!important;justify-content:space-between;align-items:center;border:0!important;padding:0!important}.link-footer button{border:1px solid var(--border);border-radius:6px;background:#fff;padding:6px 8px}.link-list span{color:var(--muted)}.toggle{background:#fff;border:1px solid var(--border);border-radius:8px;padding:14px;display:inline-flex;gap:10px;align-items:center}.game-screen{padding:24px;display:grid;gap:16px;justify-items:start}.game-screen header{width:min(520px,90vw);gap:16px}.game-screen header h1{margin:0}.game-screen header span{color:var(--muted);white-space:nowrap}.game-help{max-width:520px;margin:0;color:var(--muted)}.game-stats{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.game-stats strong,.game-stats span{border:1px solid var(--border);background:#fff;border-radius:8px;padding:7px 10px}.game-stats strong{color:var(--blue);background:#eaf1ff;border-color:#bfdbfe}.snake-wrap{position:relative;width:min(520px,90vw)}.snake-canvas{width:100%;aspect-ratio:1;background:#fff;border:1px solid #bfdbfe;border-radius:8px;touch-action:none;box-shadow:0 18px 45px #11182714}.secret-chat-trigger{position:absolute;top:8px;right:8px;z-index:1;width:44px;height:44px;border:0;border-radius:50%;background:transparent;padding:0}.secret-chat-trigger:after{content:"";position:absolute;top:18px;right:18px;width:6px;height:6px;border-radius:50%;background:#2563eb38;box-shadow:0 0 0 1px #ffffff59}.secret-chat-trigger:active:after{background:#2563eb73}.game-overlay{position:absolute;inset:0;display:grid;place-items:center;align-content:center;gap:8px;background:#f8fafcb8;border-radius:8px;color:var(--ink)}.game-overlay span{color:var(--muted)}.game-overlay.danger{color:#991b1b;background:#fee2e2c7}.game-actions{display:flex;gap:10px;flex-wrap:wrap}.speed-tabs{display:inline-flex;gap:6px;background:#fff;border:1px solid var(--border);border-radius:8px;padding:4px}.speed-tabs button{border:0;background:transparent;border-radius:6px;padding:7px 10px}.speed-tabs button.active{background:#eaf1ff;color:var(--blue);font-weight:700}.dpad{display:grid;grid-template-columns:repeat(3,46px);gap:8px}.dpad button{width:46px;height:46px;border:1px solid var(--border);border-radius:8px;background:#fff;display:grid;place-items:center}.dpad button:first-child{grid-column:2}.dpad button:nth-child(2){grid-column:1}.dpad button:nth-child(3){grid-column:2}.dpad button:nth-child(4){grid-column:3;grid-row:2}@media(max-width:820px){.app-shell{grid-template-columns:1fr}.sidebar{position:sticky;top:0;z-index:2;flex-direction:row;overflow-x:auto;align-items:center}.brand{margin:0}.sidebar-footer{margin:0 0 0 auto}.messenger{grid-template-columns:1fr;height:auto}.chat-list{border-right:0;border-bottom:1px solid var(--border)}.chat-panel{height:calc(100vh - 90px)}.admin-grid{grid-template-columns:1fr}}