:root{--bg:#080b12;--panel:#121722;--panel2:#171d2b;--line:#2a3346;--text:#edf2ff;--muted:#98a5c6;--accent:#5a8cff;--danger:#ff667a}
*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}button,input{font:inherit}
.hidden{display:none!important}.mobile-only{display:none!important}
.app-root{height:100vh;display:flex;flex-direction:column}.login-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(5,8,14,.9);z-index:50}.login-card{width:min(92vw,420px);background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.login-logo{font-size:28px;font-weight:700}.login-title{margin-top:8px;font-size:18px}.login-subtitle{margin-top:8px;color:var(--muted)}.login-form{display:flex;gap:10px;margin-top:16px}.login-form input{flex:1;min-width:0;background:#0b1018;border:1px solid var(--line);color:var(--text);padding:12px 14px;border-radius:12px}.login-form button,.chat-form button{background:var(--accent);color:#fff;border:0;border-radius:12px;padding:12px 16px;cursor:pointer}.login-error{min-height:24px;margin-top:10px;color:#ff8d9d}
.hud{padding:10px 14px 8px;background:linear-gradient(180deg,rgba(12,16,24,.95),rgba(12,16,24,.82));border-bottom:1px solid rgba(255,255,255,.05);backdrop-filter:blur(12px)}.topbar{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}.brand{font-size:22px;font-weight:800}.stats,.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.chip,.icon-btn,.tool-btn{background:var(--panel2);border:1px solid var(--line);color:var(--text);border-radius:12px;padding:10px 12px}.chip{display:flex;gap:6px;align-items:center}.chip-btn{cursor:pointer}.icon-btn,.tool-btn{cursor:pointer}.tool-btn.active{border-color:var(--accent);box-shadow:0 0 0 1px rgba(90,140,255,.3) inset}.icon-btn.danger{color:#fff;background:#34161d;border-color:#5a2430}.swatch{display:inline-block;width:14px;height:14px;border-radius:4px;border:1px solid rgba(255,255,255,.25)}
.palette-wrap{margin-top:10px;overflow:auto}.palette{display:grid;grid-template-columns:repeat(16,minmax(20px,1fr));gap:8px}.palette-btn{width:100%;aspect-ratio:1/1;border-radius:8px;border:2px solid rgba(255,255,255,.14);cursor:pointer}.palette-btn.active{border-color:#fff;box-shadow:0 0 0 2px rgba(90,140,255,.6)}.statusbar{display:flex;justify-content:space-between;gap:12px;margin-top:10px;font-size:14px;color:var(--muted)}
.workspace{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 360px}.board-viewport{position:relative;min-width:0;min-height:0;overflow:hidden;background:#05070d}.board-viewport canvas{display:block;width:100%;height:100%;touch-action:none;cursor:crosshair}.board-viewport canvas.panning{cursor:grabbing}.chat-panel{display:flex;flex-direction:column;min-height:0;background:rgba(12,16,24,.96);border-left:1px solid rgba(255,255,255,.06)}.chat-head,.modal-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06)}.chat-title,.modal-title{font-size:18px;font-weight:700}.chat-list,.online-list{flex:1;min-height:0;overflow:auto;padding:10px}.chat-item{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:8px}.chat-name{font-weight:700}.chat-message{margin-top:6px;word-break:break-word}.chat-meta{margin-top:6px;color:var(--muted);font-size:12px}.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid rgba(255,255,255,.06)}.chat-form input{flex:1;min-width:0;background:#0b1018;border:1px solid var(--line);color:var(--text);padding:12px 14px;border-radius:12px}
.modal{position:fixed;inset:0;background:rgba(4,7,12,.68);display:flex;align-items:center;justify-content:center;z-index:40}.modal-card{width:min(92vw,420px);max-height:min(80vh,700px);background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.45)}.online-item{padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.06)}.online-item:last-child{border-bottom:0}
.pixel-tooltip{position:absolute;z-index:30;padding:8px 10px;border-radius:10px;background:rgba(10,13,20,.96);border:1px solid rgba(255,255,255,.12);color:#fff;font-size:13px;pointer-events:none;transform:translate(12px,-8px);white-space:nowrap;box-shadow:0 10px 30px rgba(0,0,0,.35)}
@media (max-width: 900px){.workspace{grid-template-columns:minmax(0,1fr)}.mobile-only{display:inline-flex!important}.chat-panel{position:fixed;left:8px;right:8px;bottom:8px;top:24%;z-index:35;border:1px solid rgba(255,255,255,.08);border-radius:18px;box-shadow:0 24px 50px rgba(0,0,0,.45)}.chat-panel.hidden-mobile{display:none}.statusbar .hint{display:none}.palette{grid-template-columns:repeat(8,minmax(20px,1fr))}}