.auth-root{position:fixed;inset:0;z-index:500;display:grid;place-items:center;padding:16px;overflow:auto;background:radial-gradient(1200px 600px at 20% -10%,rgba(99,102,241,.18),transparent 60%),var(--bg-base)}
.auth-card{width:min(440px,100%);background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:18px;padding:28px;box-shadow:var(--shadow-raised,0 20px 60px rgba(0,0,0,.35))}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}.auth-brand small{display:block;color:var(--text-muted)}
.auth-card h1{font-size:24px;margin:0 0 4px}.auth-sub{color:var(--text-secondary);margin:0 0 16px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--bg-inset);border:1px solid var(--border-default);border-radius:10px;padding:3px;margin-bottom:14px}
.auth-tabs button{background:none;border:0;color:var(--text-secondary);padding:9px;border-radius:8px;cursor:pointer;font:inherit;font-weight:600;min-height:40px}
.auth-tabs button.active{background:var(--accent-primary);color:var(--on-accent)}
.auth-google{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#1f2937;border:1px solid #d1d5db;min-height:44px;font-weight:600}
.auth-google:hover{background:#f3f4f6}.auth-google[disabled]{opacity:.7}
.auth-or{display:flex;align-items:center;gap:10px;margin:14px 0;color:var(--text-muted);font-size:12px}.auth-or::before,.auth-or::after{content:'';flex:1;height:1px;background:var(--border-subtle)}
.auth-form{display:grid;gap:12px}.auth-field{display:grid;gap:5px;font-size:13px;font-weight:600;color:var(--text-secondary)}.auth-field small{font-weight:400;color:var(--text-muted)}
.auth-field input{width:100%;min-height:44px;padding:10px 12px;font:inherit;font-size:16px;color:var(--text-primary);background:var(--bg-inset);border:1px solid var(--border-default);border-radius:10px}
.auth-field input:focus{outline:2px solid var(--accent-primary);outline-offset:1px}
.pw-wrap{position:relative}.pw-wrap input{padding-right:46px}.pw-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--text-muted);cursor:pointer;min-width:40px;min-height:40px}
.auth-msg{min-height:0;font-size:13px;border-radius:8px}.auth-msg.error{background:var(--signal-down-dim);color:var(--signal-down);padding:9px 11px}.auth-msg.ok{background:var(--signal-up-dim);color:var(--signal-up);padding:9px 11px}
.auth-submit{width:100%;min-height:44px;font-weight:700}.auth-link{background:none;border:0;color:var(--accent-primary);cursor:pointer;font:inherit;text-align:center;padding:6px;min-height:36px}
.auth-demo{display:flex;gap:8px;align-items:flex-start;margin-top:14px;padding:10px 12px;border-radius:10px;background:var(--signal-warn-dim);color:var(--text-primary);font-size:12.5px}
.auth-foot{display:flex;gap:6px;align-items:center;justify-content:center;color:var(--text-muted);font-size:12px;margin:14px 0 0;text-align:center}
/* topbar account chip + popover */
.user-chip{display:flex;align-items:center;gap:8px;background:var(--bg-panel);color:var(--text-primary);border:1px solid var(--border-default);border-radius:999px;padding:3px 10px 3px 3px;cursor:pointer;font:inherit;min-height:36px}
.user-chip .avatar,.account-pop .avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--accent-primary);color:var(--on-accent);font-weight:700;font-size:12px}
.account-pop{position:fixed;z-index:300;top:58px;right:12px;width:min(300px,calc(100vw - 24px));background:var(--bg-panel);border:1px solid var(--border-default);border-radius:14px;padding:14px;box-shadow:var(--shadow-raised,0 12px 40px rgba(0,0,0,.4))}
.account-pop .who{display:flex;gap:10px;align-items:center;margin-bottom:10px}.account-pop small{color:var(--text-muted);display:block;overflow:hidden;text-overflow:ellipsis}
.sync-line{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);padding:8px 10px;background:var(--bg-inset);border-radius:8px;margin-bottom:10px}
.sync-line.synced i{color:var(--signal-up)}.sync-line.offline i,.sync-line.error i{color:var(--signal-warn)}
@media (max-width:640px){.user-chip .uname{display:none}.user-chip{padding:3px}.auth-card{padding:20px 16px}}