/* modal custom style - premium glass effect */
        .modal-content {
            border: none;
            border-radius: 0px;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(20px);
            box-shadow: 0 50px 70px rgba(0,0,0,0.25), 0 10px 30px rgba(0,0,0,0.1);
            border: 1px solid rgba(255,255,255,0.5);
        }
        .modal-header {
            background: linear-gradient(135deg, #3b8db3 0%, #217093 100%);
            color: white;
            border-radius: 0 0;
            padding: 1.5rem 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .modal-header .modal-title {
            font-weight: 600;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .modal-header .modal-title i {
            font-size: 1.8rem;
            filter: drop-shadow(0 2px 5px rgba(0,0,0,0.2));
        }
        .modal-header .btn-close {
            filter: brightness(0) invert(1);
            opacity: 0.8;
            transition: all 0.2s;
        }
        .modal-header .btn-close:hover {
            opacity: 1;
            transform: rotate(90deg);
        }
        .modal-body {
            padding: 2.5rem 2.5rem 2rem;
            background: rgba(255,255,255,0.5);
        }
        .modal-footer {
            background: rgba(255,255,255,0.8);
            border-radius: 0 0 2rem 2rem;
            padding: 1.2rem 2rem;
            border-top: 1px solid rgba(0,0,0,0.05);
            backdrop-filter: blur(10px);
        }

        /* progress steps - premium */
        .step-indicator {
            display: flex;
            justify-content: space-between;
            margin-bottom: 3rem;
            padding: 0 0.5rem;
            position: relative;
        }
        .step-indicator::before {
            content: '';
            position: absolute;
            top: 19px;
            left: 70px;
            right: 70px;
            height: 2px;
            background: linear-gradient(90deg, #e0e0e0 0%, #c0c0c0 100%);
            z-index: 0;
        }
        .step-item {
            flex: 1;
            text-align: center;
            position: relative;
            font-size: 0.9rem;
            font-weight: 600;
            color: #95a5b5;
            z-index: 1;
            transition: all 0.3s;
        }
        .step-item.active {
            color: #3b8db3;
            transform: translateY(-2px);
        }
        .step-item .step-circle {
            width: 42px;
            height: 42px;
            background: white;
            border: 2px solid #d0dae8;
            border-radius: 50%;
            margin: 0 auto 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #5a6e85;
            transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            position: relative;
            background: white;
        }
        .step-item.active .step-circle {
            background: linear-gradient(135deg, #3b8db3, #217093);
            border-color: transparent;
            color: white;
            transform: scale(1.1);
            box-shadow: 0 10px 20px rgba(30,60,95,0.3);
        }
        .step-item.completed .step-circle {
            background: linear-gradient(135deg, #10b981, #059669);
            border-color: transparent;
            color: white;
        }
        .step-item.completed .step-circle::after {
            content: '✓';
            font-size: 1.2rem;
        }
        .step-item.completed .step-circle span {
            display: none;
        }

        /* form elements - elegant */
        .form-label {
            font-weight: 600;
            color: #1e3a5f;
            font-size: 0.9rem;
            margin-bottom: 0.3rem;
            letter-spacing: -0.2px;
        }
        .required:after {
            content: " *";
            color: #ef4444;
            font-weight: 600;
        }
        .form-control, .form-select {
            border: 1px solid #e2e8f0;
            border-radius: 0px;
            padding: 0.7rem 1rem;
            transition: all 0.2s;
            background: rgba(255,255,255,0.9);
            height: 42px;
        }
        .form-control:focus, .form-select:focus {
            border-color: #3b8db3;
            box-shadow: 0 0 0 3px rgba(30,60,95,0.1);
            background: white;
        }
        .form-control.is-valid, .form-select.is-valid {
            border-color: #10b981;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2310b981' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right calc(0.375em + 0.1875rem) center;
            background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
        }
        .form-control.is-invalid, .form-select.is-invalid {
            border-color: #ef4444;
        }
        
        /* price card - premium */
        .card-price {
            background: linear-gradient(135deg, #f8faff, #f0f4ff);
            border-radius: 0px;
            padding: 1rem 1.5rem;
            border-left: 5px solid #3b8db3;
            font-size: 1.8rem;
            font-weight: 700;
            color: #3b8db3;
            box-shadow: 0 5px 15px rgba(30,60,95,0.08);
            margin-top: 1.5rem;
        }
        .card-price span:first-child {
            font-size: 1rem;
            font-weight: 500;
            color: #64748b;
        }

        /* bundle options - enhanced */
        .bundle-option {
            border: px solid #e9eef3;
            border-radius: 0px;
            padding: 1.2rem;
            margin-bottom: 0.8rem;
            background: white;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }
        .bundle-option:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(30,60,95,0.1);
            border-color: #bdd3e8;
        }
        .bundle-option.selected {
            border: 2px solid #1e3c5f;
            background: linear-gradient(135deg, #f8fbff, #f0f7ff);
            box-shadow: 0 10px 25px rgba(30,60,95,0.15);
        }
        .bundle-option .form-check-label {
            font-weight: 600;
            color: #1e293b;
        }

        /* signature tabs */
        .nav-tabs .nav-link {
            color: #64748b;
            border: none;
            padding: 0.5rem 1rem;
            font-weight: 500;
        }
        .nav-tabs .nav-link.active {
            color: #1e3c5f;
            background: transparent;
            border-bottom: 0px solid #1e3c5f;
        }
        
        /* signature canvas - beautiful */
        #signaturePad {
            border: 0px dashed #a0b8d0;
            border-radius: 0px;
            background: white;
            width: 100%;
            height: 160px;
            cursor: crosshair;
            box-shadow: inset 0 2px 10px rgba(0,0,0,0.02);
            transition: all 0.2s;
        }
        #signaturePad:hover {
            border-color: #1e3c5f;
            background: #fafcff;
        }

        /* upload area */
        .upload-area {
            border: 2px dashed #a0b8d0;
            border-radius: 20px;
            padding: 2rem;
            text-align: center;
            background: #f8fcff;
            cursor: pointer;
            transition: all 0.2s;
        }
        .upload-area:hover {
            border-color: #1e3c5f;
            background: #f0f7ff;
        }
        .upload-area i {
            font-size: 2.5rem;
            color: #1e3c5f;
            opacity: 0.6;
        }

        /* typed signature preview */
        .typed-signature-preview {
            font-family: 'Brush Script MT', cursive;
            font-size: 2.5rem;
            color: #1e3c5f;
            text-align: center;
            padding: 1rem;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            background: white;
        }

        /* success page - elegant */
        .success-page {
            text-align: center;
            padding: 2rem 0;
        }
        .success-icon {
            font-size: 6rem;
            color: #10b981;
            filter: drop-shadow(0 10px 20px rgba(16,185,129,0.2));
            animation: scaleIn 0.5s ease;
        }
        @keyframes scaleIn {
            from { transform: scale(0); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }
        .app-id {
            background: linear-gradient(135deg, #f1f5f9, #e9eff5);
            padding: 0.8rem 1.5rem;
            border-radius: 100px;
            font-family: 'SF Mono', monospace;
            font-size: 1.6rem;
            letter-spacing: 2px;
            display: inline-block;
            border: 1px solid #cbd5e1;
            color: #1e293b;
            font-weight: 600;
        }
        .email-preview {
            background: linear-gradient(135deg, #ffffff, #f8fcff);
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid #cde1f5;
            margin-top: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        /* buttons - premium */
        .btn-primary {
            background: linear-gradient(135deg, #3b8db3, #217093);
            border: none;
            border-radius: 40px;
            padding: 0.8rem 2rem;
            font-weight: 500;
            transition: all 0.3s;
            box-shadow: 0 5px 15px rgba(30,60,95,0.2);
            height: 50px;
            line-height: 26px;
        }
        .btn-primary:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(30,60,95,0.3);
            background: linear-gradient(135deg, #217093, #3b8db3);
        }
        .btn-primary:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .btn-outline-secondary {
            border-radius: 40px;
            padding: 0.8rem 2rem;
            font-weight: 500;
            border: 1px solid #cbd5e1;
            color: #475569;
            height: 50px;
            line-height: 26px;
        }
        .btn-outline-secondary:hover {
            background: #f1f5f9;
            border-color: #94a3b8;
            color: #1e293b;
        }
        .btn-success {
            background: linear-gradient(135deg, #10b981, #059669);
            border: none;
            border-radius: 40px;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(16,185,129,0.2);
            height: 50px;
            line-height: 26px;
        }
        .btn-success:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(16,185,129,0.3);
        }
        .btn-sm {
            height: 38px;
            line-height: 24px;
        }

        /* review summary card */
        #reviewSummary {
            background: linear-gradient(135deg, #ffffff, #f9fcff);
            border: 1px solid #e2e8f0;
            border-radius: 20px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.02);
        }

        /* custom checkbox */
        .form-check-input:checked {
            background-color: #1e3c5f;
            border-color: #1e3c5f;
        }

        /* animations */
        .step {
            animation: fadeIn 0.4s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Captcha button styles */
        .hold-button {
            background: #f1f5f9;
            border: 0px solid #cbd5e1;
            border-radius: 0px;
            color: #1e293b;
            font-weight: 600;
            transition: all 0.2s;
            cursor: pointer;
            user-select: none;
            height: 42px;
            line-height: 38px;
            padding: 0 1rem;
            width: 100%;
            position: relative;
            overflow: hidden;
        }
        .hold-button:active:not(.verified) {
            transform: scale(0.98);
        }
        .hold-button.verifying {
            background: #e2e8f0;
            border-color: #1e3c5f9f;
        }
        .hold-button.verified {
            background: #10b981;
            border-color: #059669;
            color: white;
            cursor: default;
        }
        .hold-button.verified:active {
            transform: none;
        }
        .progress-fill {
            background: linear-gradient(90deg, #198754, #28a745);
            transition: width 0.1s linear;
            opacity: 0.8;
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
        }
        .verified-text {
            font-size: 0.8rem;
            animation: fadeIn 0.3s ease;
        }
        .invalid-captcha {
            font-size: 0.8rem;
            animation: shake 0.3s ease;
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: transform; translateX((5px)); }
        }

        /* loading spinner */
        .spinner {
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255,255,255,0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s ease-in-out infinite;
            display: inline-block;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }