/* Kombi Seçim Formu - Premium Exciting Design */

:root {
    /* ============================================
       PREMIUM COLOR PALETTE
       ============================================ */
    
    /* Primary Gradient - Sıcak Turuncu (Heyecan Verici) */
    --primary: #ff6b35;
    --primary-dark: #e85a2a;
    --primary-light: #fff4f0;
    --primary-start: #ff6b35;
    --primary-end: #f7931e;
    --primary-gradient: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --primary-glow: rgba(255, 107, 53, 0.15);
    
    /* Secondary - Derin Mavi (Güven Veren) */
    --secondary: #1e3a5f;
    --secondary-dark: #152a45;
    --secondary-light: #e8f4fc;
    --secondary-start: #1e3a5f;
    --secondary-end: #2563eb;
    --secondary-gradient: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    
    /* Accent - Altın (Premium His) */
    --accent: #f7931e;
    --accent-light: #fff7ed;
    --accent-gold: #ffd700;
    --accent-gold-light: #fff4cc;
    
    /* Success - Yeşil (Olumlu Geri Bildirim) */
    --success: #10b981;
    --success-dark: #059669;
    --success-light: #ecfdf5;
    --success-start: #10b981;
    --success-end: #059669;
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    
    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    
    /* ============================================
       GLASSMORPHISM EFFECTS
       ============================================ */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-bg-strong: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    
    /* ============================================
       GLOW EFFECTS
       ============================================ */
    --glow-primary: 0 0 30px rgba(255, 107, 53, 0.4);
    --glow-primary-strong: 0 0 50px rgba(255, 107, 53, 0.6);
    --glow-success: 0 0 30px rgba(16, 185, 129, 0.4);
    --glow-blue: 0 0 30px rgba(37, 99, 235, 0.4);
    
    /* ============================================
       PREMIUM SHADOWS
       ============================================ */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.15);
    --shadow-premium: 0 20px 40px -10px rgba(255, 107, 53, 0.2);
    --shadow-card-hover: 0 20px 40px -10px rgba(255, 107, 53, 0.3);
    --shadow-product-hover: 0 30px 60px -15px rgba(255, 107, 53, 0.25);
    
    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Radius */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================
   FORM CONTAINER - GLASSMORPHISM
   ============================================ */
.ksf-form-wrapper {
    max-width: 860px;
    margin: 20px auto;
    padding: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow), var(--shadow-xl);
    font-family: var(--font);
    position: relative;
    overflow: hidden;
}

/* Animated Decorative Background */
.ksf-form-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(247, 147, 30, 0.05) 0%, transparent 40%);
    animation: floatBackground 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

/* Form Content Container */
.ksf-form-content {
    position: relative;
    z-index: 1;
    padding: 48px;
}

@keyframes floatBackground {
    0%, 100% { 
        transform: translate(0, 0) rotate(0deg); 
    }
    25% { 
        transform: translate(10px, -10px) rotate(2deg); 
    }
    50% { 
        transform: translate(0, -20px) rotate(0deg); 
    }
    75% { 
        transform: translate(-10px, -10px) rotate(-2deg); 
    }
}

/* ============================================
   TRUST BAR - GÜVEN GÖSTERGELERİ
   ============================================ */
.ksf-trust-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    padding: 16px 24px;
    background: var(--secondary-gradient);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    position: relative;
    z-index: 2;
}

.ksf-trust-bar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.ksf-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: transform 0.3s var(--ease);
}

.ksf-trust-item:hover {
    transform: translateY(-2px);
}

.ksf-trust-icon {
    font-size: 18px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

/* Progress Steps */
.ksf-progress {
    margin-bottom: 48px;
}

.ksf-progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
}

.ksf-step-indicator {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-400);
    transition: all 0.3s var(--ease);
    position: relative;
    z-index: 2;
}

.ksf-step-indicator.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-color: var(--primary);
    color: var(--white);
    transform: scale(1.1);
    box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.5);
}

.ksf-step-indicator.completed {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    border-color: var(--success);
    color: var(--white);
}

.ksf-step-indicator .ksf-step-check { display: none; }
.ksf-step-indicator.completed .ksf-step-number { display: none; }
.ksf-step-indicator.completed .ksf-step-check { display: block; }

.ksf-step-line {
    width: 80px;
    height: 3px;
    background: var(--gray-200);
    margin: 0 8px;
    border-radius: 2px;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}

.ksf-step-line.completed {
    background: linear-gradient(90deg, var(--success) 0%, #34d399 100%);
}

/* Step Header */
.ksf-step-header {
    text-align: center;
    margin-bottom: 40px;
}

.ksf-step-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0 0 12px 0;
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.ksf-step-description {
    color: var(--gray-500);
    font-size: 16px;
    margin: 0;
    line-height: 1.6;
}

/* Step 1 Cards */
.ksf-step1-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.ksf-step1-card {
    cursor: pointer;
    display: block;
}

.ksf-step1-card input { display: none; }

.ksf-step1-card-content {
    padding: 28px 24px;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s var(--ease);
    position: relative;
}

.ksf-step1-card:hover .ksf-step1-card-content {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.ksf-step1-card input:checked + .ksf-step1-card-content {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-lg);
    transform: translateY(-6px);
}

.ksf-step1-card-image {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: var(--radius);
    color: var(--gray-500);
    transition: all 0.3s var(--ease);
}

.ksf-step1-card:hover .ksf-step1-card-image,
.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-image {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    transform: scale(1.1);
    box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.4);
}

.ksf-step1-card-image img {
    max-width: 36px;
    max-height: 36px;
    object-fit: contain;
    transition: all 0.3s var(--ease);
}

.ksf-step1-card:hover .ksf-step1-card-image img,
.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-image img {
    filter: brightness(10);
}

.ksf-step1-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.ksf-step1-card-desc {
    font-size: 13px;
    color: var(--gray-500);
    margin: 0 0 16px 0;
    line-height: 1.5;
}

.ksf-step1-card-radio {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    transition: all 0.2s var(--ease);
}

.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-radio {
    border-color: var(--primary);
    background: var(--primary);
}

.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-radio::after {
    content: '✓';
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

/* Step 2 Cards */
.ksf-card-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.ksf-card-option {
    cursor: pointer;
}

.ksf-card-option input { display: none; }

.ksf-card-content {
    padding: 32px 24px;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s var(--ease);
}

.ksf-card-option:hover .ksf-card-content {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.ksf-card-option input:checked + .ksf-card-content {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-lg);
    transform: translateY(-6px);
}

.ksf-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: var(--radius);
    color: var(--gray-500);
    transition: all 0.3s var(--ease);
}

.ksf-card-option:hover .ksf-card-icon,
.ksf-card-option input:checked + .ksf-card-content .ksf-card-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    transform: scale(1.1);
    box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.4);
}

.ksf-card-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--gray-800);
}

.ksf-card-content p {
    font-size: 13px;
    color: var(--gray-500);
    margin: 0;
    line-height: 1.5;
}

/* Step 3 - Area Input */
.ksf-area-input {
    max-width: 480px;
    margin: 0 auto;
}

.ksf-slider-container {
    margin-bottom: 32px;
    padding: 28px;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.ksf-slider-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-500);
}

.ksf-slider {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(90deg, var(--gray-200) 0%, var(--primary) 100%);
    border-radius: 4px;
    outline: none;
}

.ksf-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--white);
    border: 3px solid var(--primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.2s var(--ease);
}

.ksf-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 6px var(--primary-glow), var(--shadow-md);
}

.ksf-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--white);
    border: 3px solid var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

.ksf-area-value {
    text-align: center;
}

.ksf-area-value label {
    display: block;
    margin-bottom: 14px;
    color: var(--gray-500);
    font-size: 14px;
    font-weight: 500;
}

.ksf-input-group {
    display: inline-flex;
    align-items: stretch;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.2s var(--ease);
}

.ksf-input-group:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.ksf-number-input {
    width: 100px;
    padding: 16px;
    border: none;
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    color: var(--primary);
    outline: none;
    background: transparent;
    font-family: var(--font);
}

.ksf-number-input::-webkit-inner-spin-button,
.ksf-number-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.ksf-input-suffix {
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.ksf-area-warning {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    background: var(--accent-light);
    border: 1px solid #fed7aa;
    border-radius: var(--radius);
    margin-top: 24px;
}

.ksf-warning-icon { 
    font-size: 22px;
}

.ksf-warning-content h4 {
    margin: 0 0 4px 0;
    color: var(--gray-800);
    font-weight: 600;
    font-size: 14px;
}

.ksf-warning-content p {
    margin: 0;
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.5;
}

/* Step 4 - Product Cards */
.ksf-products-container {
    display: grid;
    gap: 20px;
}

.ksf-product-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    position: relative;
}

.ksf-product-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.ksf-product-card.selected {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-lg);
    transform: translateY(-6px);
}

.ksf-product-card.featured {
    border-color: var(--accent);
}

.ksf-featured-badge {
    position: absolute;
    top: -1px;
    right: 20px;
    background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px -2px rgba(249, 115, 22, 0.4);
}

.ksf-product-header {
    display: flex;
    gap: 20px;
    margin-bottom: 18px;
}

.ksf-product-image {
    width: 96px;
    height: 96px;
    object-fit: contain;
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 10px;
}

.ksf-product-info h3 {
    margin: 0 0 6px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-800);
}

.ksf-product-code {
    color: var(--gray-500);
    font-size: 13px;
}

.ksf-product-specs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding-top: 18px;
    border-top: 1px solid var(--gray-200);
}

.ksf-spec-item {
    text-align: center;
    padding: 14px 12px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    transition: all 0.2s var(--ease);
}

.ksf-product-card:hover .ksf-spec-item,
.ksf-product-card.selected .ksf-spec-item {
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.ksf-spec-label {
    display: block;
    font-size: 10px;
    color: var(--gray-500);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.ksf-spec-value {
    font-weight: 700;
    font-size: 16px;
    color: var(--primary);
}

.ksf-product-features {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--gray-200);
}

.ksf-product-features ul {
    margin: 0;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ksf-product-features li {
    background: var(--success-light);
    color: var(--success);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.ksf-product-features li::before {
    content: '✓ ';
}

.ksf-skip-product {
    text-align: center;
    margin-top: 28px;
}

.ksf-no-products {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 24px;
    background: var(--primary-light);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
}

.ksf-loading {
    text-align: center;
    padding: 56px;
    color: var(--gray-500);
}

.ksf-spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin-right: 12px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Form Fields */
.ksf-form-fields {
    max-width: 560px;
    margin: 0 auto;
}

.ksf-field-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 18px;
}

.ksf-field {
    margin-bottom: 22px;
}

.ksf-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 14px;
}

.ksf-field input,
.ksf-field select,
.ksf-field textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: var(--font);
    transition: all 0.2s var(--ease);
    box-sizing: border-box;
    background: var(--white);
    color: var(--gray-800);
}

.ksf-field input:focus,
.ksf-field select:focus,
.ksf-field textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.ksf-field input.error,
.ksf-field select.error,
.ksf-field textarea.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.ksf-field-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--gray-500);
}

.ksf-privacy-notice {
    background: var(--gray-50);
    padding: 18px 20px;
    border-radius: var(--radius);
    margin-top: 22px;
    border: 1px solid var(--gray-200);
}

.ksf-privacy-notice p {
    margin: 0;
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.6;
}

.ksf-address-summary {
    background: var(--gray-50);
    padding: 18px;
    border-radius: var(--radius);
    margin-bottom: 22px;
    border: 1px solid var(--gray-200);
}

.ksf-address-summary label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 14px;
}

.ksf-address-display {
    padding: 12px;
    background: var(--white);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.ksf-change-address {
    color: var(--primary);
    font-weight: 500;
}

/* Checkboxes */
.ksf-checkboxes {
    margin: 24px 0;
}

.ksf-checkbox {
    display: flex;
    align-items: flex-start;
    margin-bottom: 14px;
    cursor: pointer;
    padding: 16px;
    background: var(--gray-50);
    border-radius: var(--radius);
    transition: all 0.2s var(--ease);
    border: 1px solid transparent;
}

.ksf-checkbox:hover {
    background: var(--white);
    border-color: var(--gray-200);
    box-shadow: var(--shadow);
}

.ksf-checkbox input { display: none; }

.ksf-checkbox-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 6px;
    margin-right: 12px;
    flex-shrink: 0;
    position: relative;
    margin-top: 2px;
    transition: all 0.2s var(--ease);
}

.ksf-checkbox input:checked + .ksf-checkbox-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-color: var(--primary);
}

.ksf-checkbox input:checked + .ksf-checkbox-box::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

.ksf-checkbox span:last-child {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.5;
}

.ksf-required-note {
    font-size: 13px;
    color: var(--gray-500);
}

/* Buttons */
.ksf-form-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--gray-200);
}

.ksf-btn {
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all 0.2s var(--ease);
}

.ksf-btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 14px -2px rgba(37, 99, 235, 0.4);
}

.ksf-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.5);
}

.ksf-btn-primary:active {
    transform: translateY(0);
}

.ksf-btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.ksf-btn-secondary:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

.ksf-btn-link {
    background: none;
    border: none;
    color: var(--gray-500);
    padding: 12px;
    font-weight: 500;
}

.ksf-btn-link:hover {
    color: var(--primary);
}

.ksf-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Messages */
.ksf-validation-message {
    background: #fef2f2;
    color: #dc2626;
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-top: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid #fecaca;
}

.ksf-validation-message::before {
    content: '⚠';
    font-size: 18px;
}

.ksf-success-message {
    text-align: center;
    padding: 56px 40px;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.ksf-success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin: 0 auto 24px;
    box-shadow: 0 12px 24px -6px rgba(16, 185, 129, 0.4);
    animation: success-pop 0.4s var(--ease);
}

@keyframes success-pop {
    0% { transform: scale(0); }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.ksf-success-message h3 {
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: var(--gray-800);
}

.ksf-success-message p {
    color: var(--gray-500);
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
}

.ksf-error-message {
    background: #fef2f2;
    color: #dc2626;
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid #fecaca;
}

/* Radio Options */
.ksf-options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ksf-radio-option {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s var(--ease);
}

.ksf-radio-option:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.ksf-radio-option input { display: none; }

.ksf-radio-option:has(input:checked) {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.ksf-radio-option input:checked + .ksf-radio-box + .ksf-radio-label {
    color: var(--primary);
    font-weight: 600;
}

.ksf-radio-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    margin-right: 14px;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s var(--ease);
}

.ksf-radio-option input:checked + .ksf-radio-box {
    border-color: var(--primary);
    background: var(--primary);
}

.ksf-radio-option input:checked + .ksf-radio-box::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
}

.ksf-radio-label {
    font-size: 15px;
    color: var(--gray-700);
}

/* Responsive */
@media (max-width: 768px) {
    .ksf-form-wrapper {
        margin: 12px;
        padding: 28px 20px;
        border-radius: var(--radius-lg);
    }
    
    .ksf-step-header h2 {
        font-size: 22px;
    }
    
    /* Step 1 - 2 columns */
    .ksf-step1-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .ksf-step1-card {
        display: flex;
    }
    
    .ksf-step1-card-content {
        padding: 18px 14px;
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .ksf-step1-card-image {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }
    
    .ksf-step1-card-image svg {
        width: 26px;
        height: 26px;
    }
    
    .ksf-step1-card-title {
        font-size: 12px;
        margin-bottom: 4px;
        flex-grow: 1;
    }
    
    .ksf-step1-card-desc {
        font-size: 10px;
        margin-bottom: 10px;
    }
    
    .ksf-step1-card-radio {
        width: 18px;
        height: 18px;
        margin-top: auto;
    }
    
    /* Step 2 - 2 columns */
    .ksf-card-options {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .ksf-card-option {
        display: flex;
    }
    
    .ksf-card-content {
        padding: 18px 14px;
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .ksf-card-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 12px;
    }
    
    .ksf-card-content h3 {
        font-size: 13px;
    }
    
    .ksf-card-content p {
        font-size: 10px;
    }
    
    /* Step 4 - 2 columns */
    .ksf-products-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .ksf-product-card {
        padding: 16px;
    }
    
    .ksf-product-card .ksf-product-header {
        flex-direction: column;
        gap: 12px;
    }
    
    .ksf-product-card .ksf-product-image {
        width: 60px;
        height: 60px;
        margin: 0 auto;
    }
    
    .ksf-product-info {
        text-align: center;
    }
    
    .ksf-product-info h3 {
        font-size: 13px;
    }
    
    .ksf-product-code {
        font-size: 11px;
    }
    
    .ksf-product-specs {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .ksf-spec-item {
        display: flex;
        justify-content: space-between;
        text-align: left;
        padding: 10px 12px;
    }
    
    .ksf-spec-value {
        font-size: 14px;
    }
    
    .ksf-product-features {
        display: none;
    }
    
    .ksf-featured-badge {
        font-size: 9px;
        padding: 6px 10px;
    }
    
    /* Progress */
    .ksf-step-indicator {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
    
    .ksf-step-line {
        width: 30px;
        margin: 0 4px;
    }
    
    /* Form */
    .ksf-field-row {
        grid-template-columns: 1fr;
    }
    
    /* Buttons */
    .ksf-form-navigation {
        flex-direction: column;
        gap: 12px;
    }
    
    .ksf-btn {
        width: 100%;
    }
    
    .ksf-btn-primary {
        order: -1;
    }
    
    /* Slider */
    .ksf-number-input {
        font-size: 28px;
        width: 80px;
    }
}

@media (max-width: 380px) {
    .ksf-step1-cards,
    .ksf-card-options,
    .ksf-products-container {
        gap: 8px;
    }
    
    .ksf-step1-card-content,
    .ksf-card-content,
    .ksf-product-card {
        padding: 12px 10px;
    }
    
    .ksf-step1-card-title,
    .ksf-card-content h3,
    .ksf-product-info h3 {
        font-size: 11px;
    }
    
    .ksf-step-header h2 {
        font-size: 18px;
    }
    
    /* Progress - smaller but still round */
    .ksf-step-indicator {
        width: 36px;
        height: 36px;
        font-size: 13px;
    }
    
    .ksf-step-line {
        width: 24px;
        margin: 0 3px;
    }
}

/* ============================================
   PREMIUM ANIMATION SYSTEM
   ============================================ */

/* Pulse Glow - Aktif Adım İçin */
@keyframes pulseGlow {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(255, 107, 53, 0.4); 
    }
    50% { 
        box-shadow: 0 0 40px rgba(255, 107, 53, 0.7); 
    }
}

/* Progress Flow - İlerleme Çizgisi */
@keyframes progressFlow {
    0% { 
        background-position: 0% 50%; 
    }
    100% { 
        background-position: 200% 50%; 
    }
}

/* Select Pulse - Seçim Animasyonu */
@keyframes selectPulse {
    0% { 
        box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.5); 
    }
    70% { 
        box-shadow: 0 0 0 20px rgba(255, 107, 53, 0); 
    }
    100% { 
        box-shadow: 0 0 0 0 rgba(255, 107, 53, 0); 
    }
}

/* Gradient Shift - Butonlar İçin */
@keyframes gradientShift {
    0% { 
        background-position: 0% 50%; 
    }
    50% { 
        background-position: 100% 50%; 
    }
    100% { 
        background-position: 0% 50%; 
    }
}

/* Fade Slide In - Adım Geçişleri */
@keyframes fadeSlideIn {
    0% { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    100% { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Checkmark Pop - Başarı Animasyonu */
@keyframes checkmarkPop {
    0% { 
        transform: scale(0) rotate(-180deg); 
    }
    70% { 
        transform: scale(1.2) rotate(10deg); 
    }
    100% { 
        transform: scale(1) rotate(0deg); 
    }
}

/* Sparkle - Parıltı Efekti */
@keyframes sparkle {
    0% { 
        opacity: 0; 
        transform: scale(0) rotate(0deg); 
    }
    50% { 
        opacity: 1; 
        transform: scale(1.2) rotate(180deg); 
    }
    100% { 
        opacity: 0; 
        transform: scale(0) rotate(360deg); 
    }
}

/* Shine - Parlama Efekti */
@keyframes shine {
    0% { 
        transform: translateX(-100%) rotate(45deg); 
    }
    100% { 
        transform: translateX(100%) rotate(45deg); 
    }
}

/* Card Lift - Kart Kaldırma */
@keyframes cardLift {
    0% { 
        transform: translateY(0) scale(1); 
    }
    100% { 
        transform: translateY(-8px) scale(1.02); 
    }
}

/* Bounce In - Zıplama Girişi */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Counter Up - Sayaç Animasyonu */
@keyframes counterUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   PREMIUM PROGRESS STYLES
   ============================================ */

/* Progress Percentage */
.ksf-progress-percentage {
    text-align: center;
    margin-top: 16px;
    font-size: 14px;
    color: var(--gray-600);
    font-weight: 500;
}

.ksf-progress-percentage .ksf-progress-value {
    font-weight: 700;
    font-size: 22px;
    color: var(--primary);
    display: inline-block;
    min-width: 30px;
}

/* Active Step with Pulse Glow */
.ksf-step-indicator.active {
    background: var(--primary-gradient);
    border-color: var(--primary);
    color: var(--white);
    transform: scale(1.1);
    animation: pulseGlow 2s ease-in-out infinite;
}

/* Completed Step Line with Flow */
.ksf-step-line.completed {
    background: var(--primary-gradient);
    background-size: 200% 200%;
    animation: progressFlow 2s linear infinite;
}

/* Completed Step Sparkle */
.ksf-step-indicator.completed {
    position: relative;
    background: var(--success-gradient);
    border-color: var(--success);
}

.ksf-step-indicator.completed::after {
    content: '✨';
    position: absolute;
    top: -12px;
    right: -12px;
    font-size: 14px;
    animation: sparkle 1s ease-out forwards;
    pointer-events: none;
}

/* ============================================
   PREMIUM CARD STYLES
   ============================================ */

/* Step 1 & 2 Cards - Gradient Border */
.ksf-step1-card-content,
.ksf-card-content {
    background: var(--white);
    border: 2px solid transparent;
    background-image: linear-gradient(var(--white), var(--white)), 
                      linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}

/* Card Hover - Lift + Glow */
.ksf-step1-card:hover .ksf-step1-card-content,
.ksf-card-option:hover .ksf-card-content {
    transform: translateY(-8px) scale(1.02);
    background-image: linear-gradient(var(--white), var(--white)), 
                      var(--primary-gradient);
    box-shadow: var(--shadow-card-hover);
}

/* Card Selected - Pulse Animation */
.ksf-step1-card input:checked + .ksf-step1-card-content,
.ksf-card-option input:checked + .ksf-card-content {
    background-image: linear-gradient(var(--primary-light), var(--primary-light)), 
                      var(--primary-gradient);
    box-shadow: var(--glow-primary), var(--shadow-card-hover);
    animation: selectPulse 0.6s ease-out;
    transform: translateY(-8px) scale(1.02);
}

/* Card Icon - Gradient on Hover/Select */
.ksf-step1-card-image,
.ksf-card-icon {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    border-radius: 50%;
    transition: all 0.4s var(--ease);
}

.ksf-step1-card:hover .ksf-step1-card-image,
.ksf-card-option:hover .ksf-card-icon,
.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-image,
.ksf-card-option input:checked + .ksf-card-content .ksf-card-icon {
    background: var(--primary-gradient);
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 10px 30px -5px rgba(255, 107, 53, 0.5);
    color: var(--white);
}

.ksf-step1-card:hover .ksf-step1-card-image svg,
.ksf-step1-card input:checked + .ksf-step1-card-content .ksf-step1-card-image svg {
    fill: var(--white);
}

/* ============================================
   PREMIUM BUTTON STYLES
   ============================================ */

.ksf-btn-primary {
    background: var(--primary-gradient);
    background-size: 200% 200%;
    color: var(--white);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 14px -2px rgba(255, 107, 53, 0.4);
    transition: all 0.3s var(--ease);
}

.ksf-btn-primary:hover {
    animation: gradientShift 2s ease infinite;
    transform: translateY(-3px);
    box-shadow: 0 15px 35px -5px rgba(255, 107, 53, 0.5);
}

/* Button Shine Effect */
.ksf-btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s ease;
}

.ksf-btn-primary:hover::before {
    left: 100%;
}

/* ============================================
   PREMIUM PRODUCT CARD STYLES
   ============================================ */

.ksf-product-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
    border: 2px solid transparent;
    background-image: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%), 
                      linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    transition: all 0.4s var(--ease);
    transform-style: preserve-3d;
    perspective: 1000px;
    position: relative;
}

/* Product Card Hover - 3D Tilt */
.ksf-product-card:hover {
    transform: translateY(-10px) rotateX(2deg) rotateY(-2deg);
    background-image: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%), 
                      var(--primary-gradient);
    box-shadow: var(--shadow-product-hover);
}

/* Product Card Selected - Green Glow */
.ksf-product-card.selected {
    background-image: linear-gradient(135deg, var(--success-light) 0%, rgba(16, 185, 129, 0.1) 100%), 
                      var(--success-gradient);
    box-shadow: var(--glow-success), var(--shadow-product-hover);
    transform: translateY(-10px);
}

/* Selected Checkmark Animation */
.ksf-product-card.selected::after {
    content: '✓';
    position: absolute;
    top: 15px;
    right: 15px;
    width: 32px;
    height: 32px;
    background: var(--success-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    animation: checkmarkPop 0.4s var(--ease);
    box-shadow: 0 4px 12px -2px rgba(16, 185, 129, 0.4);
}

/* Featured Badge - Animated */
.ksf-featured-badge {
    background: var(--primary-gradient);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    position: relative;
    overflow: hidden;
}

.ksf-featured-badge::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%
    );
    animation: shine 2s ease-in-out infinite;
}

/* ============================================
   STEP TRANSITION ANIMATION
   ============================================ */

.ksf-step {
    animation: fadeSlideIn 0.5s ease-out;
}

.ksf-step[style*="display: none"] {
    animation: none;
}

/* ============================================
   MOBILE RESPONSIVE - TRUST BAR
   ============================================ */

@media (max-width: 768px) {
    .ksf-trust-bar {
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 16px;
    }
    
    .ksf-trust-item {
        font-size: 11px;
        gap: 6px;
    }
    
    .ksf-trust-icon {
        font-size: 16px;
    }
    
    .ksf-form-content {
        padding: 28px 20px;
    }
    
    .ksf-progress-percentage {
        font-size: 12px;
        margin-top: 12px;
    }
    
    .ksf-progress-percentage .ksf-progress-value {
        font-size: 20px;
    }
}

@media (max-width: 380px) {
    .ksf-trust-bar {
        gap: 8px;
        padding: 10px 12px;
    }
    
    .ksf-trust-item {
        font-size: 10px;
    }
    
    .ksf-trust-icon {
        font-size: 14px;
    }
}