:root{--color-primary: #4F46E5;--color-primary-light: #6366F1;--color-primary-dark: #3730A3;--color-success: #10B981;--color-warning: #F59E0B;--color-danger: #EF4444;--color-info: #3B82F6;--color-bg: #F3F4F6;--color-bg-card: #FFFFFF;--color-bg-dark: #1F2937;--color-text: #111827;--color-text-secondary: #6B7280;--color-text-light: #9CA3AF;--color-border: #E5E7EB;--sidebar-width: 280px;--topbar-height: 48px;--input-height: 120px;--info-width: 320px;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--color-text);background:var(--color-bg);font-size:14px;line-height:1.5}a{color:var(--color-primary);text-decoration:none}button{cursor:pointer;border:none;outline:none;font-size:inherit}input,textarea,select{font-size:inherit;font-family:inherit;outline:none}.flex{display:flex}.flex-1{flex:1}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-4{gap:16px}.p-4{padding:16px}.text-sm{font-size:12px}.text-secondary{color:var(--color-text-secondary)}.btn{padding:8px 16px;border-radius:var(--radius);font-weight:500;transition:all .2s;display:inline-flex;align-items:center;gap:6px}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-danger{background:var(--color-danger);color:#fff}.btn-outline{border:1px solid var(--color-border);background:#fff;color:var(--color-text)}.card{background:var(--color-bg-card);border-radius:var(--radius);box-shadow:var(--shadow)}.input{padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius);width:100%;transition:border-color .2s}.input:focus{border-color:var(--color-primary)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:12px;font-size:12px;font-weight:500}.badge-online{background:#d1fae5;color:#065f46}.badge-busy{background:#fef3c7;color:#92400e}.badge-offline{background:#f3f4f6;color:#6b7280}