.btn{display:inline-flex;align-items:center;justify-content:center;padding:0.75rem 1.5rem;font-size:1rem;font-weight:600;border-radius:var(--radius-sm);transition:var(--transition);cursor:pointer;border:none;text-decoration:none;white-space:nowrap;gap:0.5rem}.btn:disabled{opacity:0.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:#0051D5;transform:translateY(-2px);box-shadow:0 8px 16px rgba(0,122,255,0.3)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover:not(:disabled){background:var(--border-color)}.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}.btn-outline:hover:not(:disabled){background:var(--primary);color:#fff}.btn-sm{padding:0.5rem 1rem;font-size:0.875rem}.btn-lg{padding:1rem 2rem;font-size:1.125rem}.btn-icon{padding:0.75rem;aspect-ratio:1}.btn-block{width:100%}input,textarea,select{width:100%;padding:0.875rem 1rem;border:2px solid var(--border-color);border-radius:var(--radius-sm);font-size:1rem;background:var(--bg-primary);color:var(--text-primary);transition:var(--transition)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,122,255,0.1)}input:disabled,textarea:disabled,select:disabled{opacity:0.6;cursor:not-allowed}textarea{min-height:120px;resize:vertical}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:0.5rem;font-weight:600;color:var(--text-primary)}.form-hint{font-size:0.875rem;color:var(--text-secondary);margin-top:0.25rem}.form-error{color:var(--danger);font-size:0.875rem;margin-top:0.25rem}input.error{border-color:var(--danger)}.card{background:var(--bg-primary);border-radius:var(--radius-md);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.card-header{margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.card-title{font-size:1.25rem;font-weight:700;margin-bottom:0.5rem}.card-body{margin-bottom:1rem}.card-footer{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-color)}.alert{padding:1rem 1.25rem;border-radius:var(--radius-sm);margin-bottom:1rem;display:flex;align-items:center;gap:0.75rem}.alert-success{background:#E8F8F0;color:#1D6F42;border-left:4px solid var(--success)}.alert-error{background:#FFE8E8;color:#C41E3A;border-left:4px solid var(--danger)}.alert-warning{background:#FFF3E0;color:#C77700;border-left:4px solid var(--warning)}.alert-info{background:#E3F5FF;color:#0077CC;border-left:4px solid var(--info)}.badge{display:inline-flex;align-items:center;padding:0.25rem 0.75rem;font-size:0.875rem;font-weight:600;border-radius:100px;white-space:nowrap}.badge-primary{background:var(--primary);color:#fff}.badge-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.badge-success{background:var(--success);color:#fff}.badge-warning{background:var(--warning);color:#fff}.badge-danger{background:var(--danger);color:#fff}.spinner{display:inline-block;width:24px;height:24px;border:3px solid rgba(0,122,255,0.2);border-top-color:var(--primary);border-radius:50%;animation:spin 0.8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;padding:1rem;background:rgba(0,0,0,0.5);backdrop-filter:blur(4px)}.modal.active{display:flex}.modal-content{background:var(--bg-primary);border-radius:var(--radius-lg);max-width:600px;width:100%;max-height:90vh;overflow-y:auto;animation:slideUp 0.3s ease-out}.modal-header{padding:1.5rem;border-bottom:1px solid var(--border-color)}.modal-body{padding:1.5rem}.modal-footer{padding:1.5rem;border-top:1px solid var(--border-color);display:flex;gap:1rem;justify-content:flex-end}.tooltip{position:relative;display:inline-block}.tooltip::after{content:attr(data-tooltip);position:absolute;bottom:125%;left:50%;transform:translateX(-50%);padding:0.5rem 0.75rem;background:var(--text-primary);color:var(--bg-primary);font-size:0.875rem;border-radius:var(--radius-sm);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity 0.3s}.tooltip:hover::after{opacity:1}