/* Small Mobile (320px+) */
@media (max-width: 360px) {
    .app-container {
        padding: 16px;
    }
    
    .step-title {
        font-size: 16px;
    }
    
    .color-btn {
        width: 36px;
        height: 36px;
    }
    
    .color-btn .checkmark {
        font-size: 14px;
    }
    
    .color-options {
        gap: 6px;
        max-width: 240px;
    }
    
    .product-image {
        height: 250px;
    }
    
    .slider-arrow {
        font-size: 24px;
        width: 32px;
        height: 32px;
    }
    
    .slider-arrow.left {
        left: -10px;
    }
    
    .slider-arrow.right {
        right: -10px;
    }
}

/* Large Mobile (480px+) */
@media (min-width: 480px) {
    .app-container {
        max-width: 420px;
        padding: 32px;
    }
    
    .step-title {
        font-size: 18px;
        margin-bottom: 24px;
    }
    
    .content-container {
        padding: 32px 0;
    }
    
    .product-card {
        max-width: 320px;
    }
    
    .product-image {
        height: 350px;
    }
    
    .color-btn {
        width: 48px;
        height: 48px;
    }
    
    .color-btn .checkmark {
        font-size: 18px;
    }
    
    .color-options {
        grid-template-columns: repeat(6, 1fr);
        max-width: 400px;
        gap: 24px;
    }
}

/* Tablet (768px+) */
@media (min-width: 768px) {
    .app-container {
        max-width: 500px;
        padding: 48px;
    }
    
    .step-title {
        font-size: 20px;
        margin-bottom: 24px;
    }
    
    .subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }
    
    .options-container {
        gap: 10px;
    }
    
    .price-options {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .option-btn {
        padding: 12px 20px;
        min-height: 44px;
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .color-btn {
        width: 52px;
        height: 52px;
    }
    
    .color-btn .checkmark {
        font-size: 20px;
    }
    
    .color-options {
        grid-template-columns: repeat(6, 1fr);
        max-width: 450px;
    }
    
    .product-card {
        max-width: 380px;
        padding: 32px;
    }
    
    .product-image {
        height: 400px;
    }
    
    .product-title {
        font-size: 16px;
        margin-bottom: 24px;
    }
    
    .nav-btn {
        padding: 10px 24px;
        min-height: 40px;
        font-size: 16px;
    }
    
    .navigation {
        padding: 24px 0;
    }
    
    .slider-arrow {
        font-size: 40px;
        width: 48px;
        height: 48px;
    }
    
    .slider-arrow.left {
        left: -30px;
    }
    
    .slider-arrow.right {
        right: -30px;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .app-container {
        max-width: 600px;
    }
    
    .content-container {
        min-height: 70vh;
    }
    
    .step-content {
        max-width: 480px;
    }
    
    .step-title {
        font-size: 22px;
    }
    
    .price-options {
        grid-template-columns: repeat(4, 1fr);
        max-width: 500px;
        gap: 12px;
    }
    
    .category-options {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .option-btn {
        padding: 14px 22px;
        min-height: 46px;
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .color-btn {
        width: 56px;
        height: 56px;
    }
    
    .color-options {
        grid-template-columns: repeat(6, 1fr);
        max-width: 480px;
    }
    
    .product-card {
        max-width: 420px;
    }
    
    .product-image {
        height: 450px;
    }
    
    .nav-btn {
        padding: 12px 28px;
        min-height: 42px;
        font-size: 16px;
    }
    
    .color-btn:hover {
        transform: scale(1.1);
    }
    
    .nav-btn:hover:not(:disabled) {
        transform: translateY(-1px);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    .product-btn:hover {
        transform: translateY(-1px);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    .slider-arrow:hover {
        transform: translateY(-50%) scale(1.15);
    }
}

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    .app-container {
        max-width: 700px;
    }
    
    .step-title {
        font-size: 25px;
    }
    
    .product-card {
        max-width: 480px;
    }
    
    .product-image {
        height: 500px;
    }
}