:root{--primary-color:#667eea;--secondary-color:#764ba2;--success-color:#10b981;--danger-color:#ef4444;--warning-color:#f59e0b;--info-color:#3b82f6;--dark-color:#1f2937;--light-color:#f9fafb;--border-color:#e5e7eb;--text-primary:#111827;--text-secondary:#6b7280;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1);--shadow-xl:0 20px 25px -5px 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;font-size:16px;line-height:1.6;color:var(--text-primary);background:var(--light-color);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 15px}.gradient-bg{background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%)}.btn{display:inline-block;padding:12px 24px;font-size:16px;font-weight:600;text-align:center;text-decoration:none;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;outline:none}.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:var(--light-color);color:var(--text-primary);border:1px solid var(--border-color)}.btn-success{background:var(--success-color);color:#fff}.btn-danger{background:var(--danger-color);color:#fff}.btn-block{width:100%;display:block}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:var(--shadow-md);margin-bottom:20px}.card-header{font-size:20px;font-weight:700;margin-bottom:16px;color:var(--text-primary)}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-primary)}.form-control{width:100%;padding:12px 16px;font-size:16px;border:1px solid var(--border-color);border-radius:8px;transition:all .3s ease;outline:none}.form-control:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(102,126,234,.1)}.form-control.error{border-color:var(--danger-color)}.form-error{color:var(--danger-color);font-size:14px;margin-top:5px}.alert{padding:16px;border-radius:8px;margin-bottom:20px;font-weight:500}.alert-success{background:#d1fae5;color:#065f46;border-left:4px solid var(--success-color)}.alert-danger{background:#fee2e2;color:#991b1b;border-left:4px solid var(--danger-color)}.alert-warning{background:#fef3c7;color:#92400e;border-left:4px solid var(--warning-color)}.alert-info{background:#dbeafe;color:#1e40af;border-left:4px solid var(--info-color)}.loading{display:inline-block;width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin .8s linear infinite}@keyframes spin {
    to { transform: rotate(360deg); }
}.text-center{text-align:center}.text-right{text-align:right}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:32px}.d-none{display:none!important}.d-block{display:block!important}.d-flex{display:flex!important}.justify-between{justify-content:space-between}.align-center{align-items:center}.gap-2{gap:16px}@media (max-width:768px){body{font-size:14px}.container{padding:0 10px}.card{padding:16px}.btn{padding:10px 20px;font-size:14px}}@media (max-width:480px){.card-header{font-size:18px}.form-control{font-size:16px}}