:root{--bg:#f8fafc;--surface:#fff;--surface-hover:#f1f5f9;--surface-active:#e2e8f0;--border:#e2e8f0;--border-strong:#cbd5e1;--border-focus:#3b82f6;--text-main:#0f172a;--text-body:#334155;--text-muted:#64748b;--text-faint:#94a3b8;--text-inverse:#fff;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-active:#1e40af;--primary-light:#eff6ff;--primary-border:#bfdbfe;--color-success:#16a34a;--color-success-bg:#f0fdf4;--color-success-border:#bbf7d0;--color-warn:#d97706;--color-warn-bg:#fffbeb;--color-warn-border:#fde68a;--color-danger:#dc2626;--color-danger-bg:#fef2f2;--color-danger-border:#fecaca;--color-info:#0284c7;--color-info-bg:#f0f9ff;--color-info-border:#bae6fd;--shadow-xs:0 1px 2px 0 rgba(0,0,0,.05);--shadow-sm:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px -1px rgba(0,0,0,.1);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -4px rgba(0,0,0,.1);--shadow-modal:0 20px 25px -5px rgba(0,0,0,.2),0 8px 10px -6px 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hsla(0,0%,100%,.2)}.login-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--text-main);margin-bottom:4px}.login-sub{color:var(--text-muted);font-size:13.5px;margin:0 0 24px}.alert{background:var(--color-danger-bg);color:var(--color-danger);border:1px solid var(--color-danger-border);border-radius:var(--radius-sm);padding:10px 14px;font-size:13px;font-weight:500;margin-bottom:16px}.alert-help{background:var(--color-info-bg);color:var(--color-info);border:1px solid var(--color-info-border);border-radius:var(--radius-sm);padding:10px 14px;font-size:12.5px;margin-top:18px;line-height:1.45}.form-actions{display:flex;justify-content:flex-end;margin-top:12px}