*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f5f5;--color-surface: #ffffff;--color-border: #e0e0e0;--color-text: #1a1a1a;--color-text-muted: #6b7280;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-error: #dc2626;--color-sidebar-bg: #1e293b;--color-sidebar-text: #cbd5e1;--color-sidebar-active: #ffffff;--color-sidebar-active-bg: #334155;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--radius: 6px}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1.5}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:40px;width:100%;max-width:400px}.auth-logo{font-size:20px;font-weight:700;color:var(--color-primary);margin-bottom:8px}.auth-subtitle{color:var(--color-text-muted);margin-bottom:28px;font-size:14px}.form-group{margin-bottom:16px}.form-group label{display:block;font-weight:500;margin-bottom:6px;font-size:13px}.form-group input{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:var(--font);outline:none;transition:border-color .15s}.form-group input:focus{border-color:var(--color-primary)}.form-error{color:var(--color-error);font-size:13px;margin-top:4px}.btn-primary{width:100%;padding:9px 16px;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;font-family:var(--font);transition:background .15s;margin-top:8px}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.auth-footer{margin-top:20px;text-align:center;font-size:13px;color:var(--color-text-muted)}.auth-footer a{color:var(--color-primary);text-decoration:none}.auth-footer a:hover{text-decoration:underline}.alert-error{background:#fef2f2;border:1px solid #fecaca;color:var(--color-error);border-radius:var(--radius);padding:10px 14px;font-size:13px;margin-bottom:16px}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--color-sidebar-bg);display:flex;flex-direction:column;padding:20px 0}.sidebar-logo{font-size:16px;font-weight:700;color:#fff;padding:0 20px 24px;border-bottom:1px solid #334155;margin-bottom:8px}.sidebar-nav{flex:1;list-style:none;padding:8px 0}.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:8px 20px;color:var(--color-sidebar-text);text-decoration:none;font-size:13px;font-weight:500;transition:background .1s,color .1s;border-radius:0}.sidebar-nav a:hover,.sidebar-nav a.active{background:var(--color-sidebar-active-bg);color:var(--color-sidebar-active)}.sidebar-user{padding:16px 20px;border-top:1px solid #334155}.sidebar-user-name{color:#fff;font-size:13px;font-weight:500;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-email{color:var(--color-sidebar-text);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:10px}.btn-signout{background:none;border:1px solid #475569;color:var(--color-sidebar-text);padding:5px 10px;border-radius:var(--radius);font-size:12px;cursor:pointer;font-family:var(--font);transition:background .1s,color .1s;width:100%}.btn-signout:hover{background:#334155;color:#fff}.main-content{flex:1;overflow:auto;padding:32px}