/* ===================================
   Nike Clothing Set - Enhanced Styles
   =================================== */

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --nike-black: #000000;
    --nike-white: #ffffff;
    --nike-red: #FF0000;
    --nike-red-dark: #CC0000;
    --nike-gray-100: #f5f5f5;
    --nike-gray-200: #e5e5e5;
    --nike-gray-300: #d4d4d4;
    --nike-gray-400: #a3a3a3;
    --nike-gray-500: #737373;
    --nike-gray-600: #525252;
    --nike-gray-700: #404040;
    --nike-gray-800: #262626;
    --nike-gray-900: #171717;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.2);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --header-height: 72px;
    --touch-target: 48px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    color: var(--nike-gray-800);
    line-height: 1.6;
    background-color: var(--nike-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Header / Navigation
   =================================== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--nike-gray-200);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    gap: 24px;
}

.logo {
    flex-shrink: 0;
    z-index: 1001;
}

.logo img {
    height: 48px;
    width: auto;
    transition: transform var(--transition-base);
}

.logo img:hover {
    transform: scale(1.05);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--nike-black);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav {
    flex: 1;
}

.nav ul {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    list-style: none;
    gap: 8px;
    flex-direction: row-reverse;
}

.nav li {
    position: relative;
}

.nav a {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    text-decoration: none;
    color: var(--nike-gray-700);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav a::before {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--nike-red);
    transition: width var(--transition-base);
}

.nav a:hover {
    color: var(--nike-black);
    background: var(--nike-gray-100);
}

.nav a:hover::before {
    width: 60%;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* Mobile Navigation */
.nav-mobile {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    max-width: 85%;
    height: 100%;
    background: var(--nike-white);
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-2xl);
    overflow-y: auto;
}

.nav-mobile.active {
    display: block;
    transform: translateX(0);
}

.nav-mobile ul {
    display: flex;
    flex-direction: column;
    padding: 80px 24px 24px;
    gap: 8px;
}

.nav-mobile a {
    display: block;
    padding: 16px 20px;
    text-decoration: none;
    color: var(--nike-gray-700);
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-align: right;
}

.nav-mobile a:hover {
    color: var(--nike-black);
    background: var(--nike-gray-100);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 680px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--nike-black) 0%, var(--nike-gray-800) 50%, var(--nike-gray-700) 100%);
    color: var(--nike-white);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 0, 0, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 580px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-content p {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 32px;
    opacity: 0.9;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease 0.4s forwards;
    opacity: 0;
}

.hero-image img {
    max-width: 100%;
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    transition: transform var(--transition-slow);
}

.hero-image img:hover {
    transform: scale(1.02) translateY(-8px);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--nike-red);
    color: var(--nike-white);
    box-shadow: 0 4px 14px rgba(255, 0, 0, 0.4);
}

.btn-primary:hover {
    background: var(--nike-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.5);
}

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

.btn-submit {
    background: var(--nike-red);
    color: var(--nike-white);
    padding: 18px 48px;
    font-size: 1.1rem;
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 14px rgba(255, 0, 0, 0.3);
    animation: fadeInUp 0.6s ease 0.6s forwards;
    opacity: 0;
}

.btn-submit:hover {
    background: var(--nike-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 0, 0, 0.4);
}

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

/* ===================================
   Price Display Styles
   =================================== */

/* Main Price Display in Hero */
.main-price-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
    flex-wrap: wrap;
}

.main-price-label {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--nike-white);
}

.main-price-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: #4ade80;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Price Summary */
.price-summary {
    background: var(--nike-gray-100);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.5s forwards;
    opacity: 0;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.price-row:not(:last-child) {
    border-bottom: 1px solid var(--nike-gray-200);
}

.price-row.total {
    border-bottom: none;
    padding-top: 16px;
}

.price-label-summary {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--nike-gray-700);
}

.price-value-summary {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--nike-red);
}

/* ===================================
   Products Section
   =================================== */
.products {
    padding: 100px 0;
    background: var(--nike-gray-100);
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 48px;
    color: var(--nike-black);
    position: relative;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.products h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--nike-red);
    margin: 16px auto 0;
    border-radius: 2px;
}

.product-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.product-item {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    background: var(--nike-white);
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.product-item:nth-child(1) { animation-delay: 0.1s; }
.product-item:nth-child(2) { animation-delay: 0.2s; }
.product-item:nth-child(3) { animation-delay: 0.3s; }
.product-item:nth-child(4) { animation-delay: 0.4s; }

.product-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.product-item img,
.product-item video {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.product-item:hover img,
.product-item:hover video {
    transform: scale(1.05);
}

/* ===================================
   Features Section
   =================================== */
.features {
    padding: 100px 0;
    background: var(--nike-white);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 48px;
    color: var(--nike-black);
    position: relative;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.features h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--nike-red);
    margin: 16px auto 0;
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--nike-white);
    padding: 40px 32px;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--nike-gray-200);
    transition: all var(--transition-base);
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--nike-red);
}

.feature-card h3 {
    color: var(--nike-black);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    transition: color var(--transition-base);
}

.feature-card:hover h3 {
    color: var(--nike-red);
}

.feature-card p {
    color: var(--nike-gray-500);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===================================
   Order Form
   =================================== */
.order {
    padding: 100px 0;
    background: var(--nike-gray-100);
}

.order h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 48px;
    color: var(--nike-black);
    position: relative;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.order h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--nike-red);
    margin: 16px auto 0;
    border-radius: 2px;
}

.order-form {
    max-width: 720px;
    margin: 0 auto;
    background: var(--nike-white);
    padding: 48px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

fieldset {
    border: none;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--nike-gray-200);
}

fieldset:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

legend {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--nike-black);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--nike-red);
    display: inline-block;
    width: 100%;
}

.form-group {
    margin-bottom: 24px;
}

.form-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--nike-gray-700);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

input[type="text"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--nike-gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-base);
    background: var(--nike-white);
    color: var(--nike-gray-800);
}

input[type="text"]:hover,
input[type="tel"]:hover,
select:hover,
textarea:hover {
    border-color: var(--nike-gray-300);
}

input[type="text"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--nike-red);
    box-shadow: 0 0 0 4px rgba(255, 0, 0, 0.1);
}

input::placeholder,
textarea::placeholder {
    color: var(--nike-gray-400);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 44px;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 16px;
    flex-direction: row-reverse;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: 20px;
    height: 20px;
    margin: 0;
    cursor: pointer;
    accent-color: var(--nike-red);
    transition: transform var(--transition-fast);
}

.radio-label:hover input[type="radio"] {
    transform: scale(1.1);
}

.color-option {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: 44px;
    padding: 0 20px;
    border-radius: var(--radius-md);
    border: 2px solid var(--nike-gray-300);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
    cursor: pointer;
}

.color-option.green {
    background-color: var(--nike-white);
    color: #16a34a;
    border-color: #16a34a;
}

.color-option.black {
    background-color: var(--nike-black);
    color: var(--nike-white);
    border-color: var(--nike-black);
}

.radio-label input[type="radio"]:checked + .color-option.green {
    background-color: #16a34a;
    color: var(--nike-white);
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4);
    transform: scale(1.02);
}

.radio-label input[type="radio"]:checked + .color-option.black {
    background-color: var(--nike-black);
    color: var(--nike-white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: scale(1.02);
}

.radio-label:hover .color-option {
    transform: scale(1.02);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--nike-black);
    color: var(--nike-white);
    text-align: center;
    padding: 40px 24px;
    margin-top: 0;
}

.footer p {
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.9;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Success Message */
.success-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--nike-white);
    padding: 48px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    text-align: center;
    z-index: 2000;
    animation: fadeInUp 0.4s ease forwards;
}

.success-message h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--nike-black);
    margin-bottom: 12px;
}

.success-message p {
    color: var(--nike-gray-500);
}

/* ===================================
   Responsive Design - Complete
   =================================== */

/* Large Screens (1400px and up) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
        padding: 0 32px;
    }

    .hero {
        min-height: 750px;
        padding: 100px 0;
    }

    .hero-content h1 {
        font-size: 4rem;
    }

    .hero-content p {
        font-size: 1.4rem;
    }

    .main-price-label {
        font-size: 1.75rem;
    }

    .main-price-value {
        font-size: 3rem;
    }

    .hero-image img {
        max-width: 600px;
    }

    .products h2,
    .features h2,
    .order h2 {
        font-size: 2.75rem;
    }

    .product-gallery {
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
    }

    .feature-card {
        padding: 48px 40px;
    }

    .order-form {
        max-width: 800px;
        padding: 56px;
    }
}

/* Extra Large Screens (1200px - 1399px) */
@media (min-width: 1200px) and (max-width: 1399px) {
    .container {
        max-width: 1140px;
    }

    .hero {
        min-height: 700px;
        padding: 80px 0;
    }

    .hero-content h1 {
        font-size: 3.5rem;
    }

    .hero-image img {
        max-width: 500px;
    }

    .product-gallery {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large Tablets/Laptops (1024px - 1199px) */
@media (min-width: 1024px) and (max-width: 1199px) {
    .hero {
        min-height: auto;
        padding: 80px 0;
    }

    .hero .container {
        flex-direction: row;
        text-align: right;
        gap: 48px;
    }

    .hero-content {
        max-width: 50%;
    }

    .hero-content h1 {
        font-size: 2.75rem;
    }

    .hero-image {
        max-width: 50%;
    }

    .hero-image img {
        max-width: 100%;
    }

    .product-gallery {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

/* Tablets (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    html {
        font-size: 15px;
    }

    .header .container {
        padding: 14px 20px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 72px 0;
    }

    .hero .container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.15rem;
    }

    .hero-image img {
        max-width: 450px;
    }

    .products,
    .features,
    .order {
        padding: 80px 0;
    }

    .products h2,
    .features h2,
    .order h2 {
        font-size: 2.25rem;
        margin-bottom: 40px;
    }

    .product-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .product-item img,
    .product-item video {
        height: 280px;
    }

    .order-form {
        padding: 40px 32px;
        max-width: 100%;
    }

    .form-group {
        margin-bottom: 24px;
    }

    label {
        font-size: 0.95rem;
        margin-bottom: 10px;
    }

    input[type="text"],
    input[type="tel"],
    select,
    textarea {
        padding: 16px 18px;
        font-size: 1rem;
        min-height: 52px;
    }

    .btn {
        padding: 16px 32px;
        font-size: 1.05rem;
        min-height: 56px;
    }

    .btn-submit {
        padding: 20px 40px;
        font-size: 1.15rem;
    }

    .radio-group {
        flex-direction: row;
        gap: 16px;
    }

    .color-option {
        min-width: 80px;
        height: 48px;
        padding: 0 20px;
        font-size: 0.95rem;
    }

    .radio-label input[type="radio"] {
        width: 22px;
        height: 22px;
    }
}

/* Mobile Large (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 20px;
    }

    .header {
        position: sticky;
        top: 0;
    }

    .header .container {
        flex-direction: row;
        gap: 12px;
        padding: 12px 16px;
    }

    .logo img {
        height: 44px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: 56px 0;
        min-height: auto;
    }

    .hero .container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 32px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.05rem;
        margin-bottom: 28px;
    }

    .main-price-display {
        justify-content: center;
    }

    .main-price-label {
        font-size: 1.25rem;
    }

    .main-price-value {
        font-size: 2rem;
    }

    .hero-image img {
        max-width: 100%;
        max-width: 350px;
    }

    .price-display {
        justify-content: center;
    }

    .products,
    .features,
    .order {
        padding: 64px 0;
    }

    .products h2,
    .features h2,
    .order h2 {
        font-size: 1.9rem;
        margin-bottom: 36px;
    }

    .product-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .product-item img,
    .product-item video {
        height: 200px;
    }

    .product-price {
        padding: 6px 14px;
        font-size: 0.9rem;
    }

    .feature-card {
        padding: 28px 24px;
    }

    .feature-card h3 {
        font-size: 1.15rem;
    }

    .order-form {
        padding: 28px 24px;
    }

    fieldset {
        margin-bottom: 28px;
        padding-bottom: 20px;
    }

    legend {
        font-size: 1.05rem;
        margin-bottom: 20px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    label {
        font-size: 0.95rem;
        margin-bottom: 10px;
    }

    input[type="text"],
    input[type="tel"],
    select,
    textarea {
        padding: 14px 16px;
        font-size: 1rem;
        min-height: 52px;
    }

    textarea {
        min-height: 100px;
    }

    .btn {
        padding: 16px 28px;
        font-size: 1.05rem;
        min-height: 56px;
        width: 100%;
    }

    .btn-submit {
        padding: 18px 32px;
        font-size: 1.1rem;
    }

    .radio-group {
        flex-direction: row;
        gap: 12px;
    }

    .color-option {
        flex: 1;
        min-width: 0;
        height: 52px;
        justify-content: center;
        font-size: 0.9rem;
    }

    .radio-label input[type="radio"] {
        width: 22px;
        height: 22px;
    }

    .price-summary {
        padding: 20px;
    }

    .footer {
        padding: 36px 24px;
    }

    .footer p {
        font-size: 0.95rem;
    }
}

/* Mobile Small (360px - 479px) */
@media (min-width: 360px) and (max-width: 479px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 16px;
    }

    .header .container {
        padding: 10px 14px;
    }

    .logo img {
        height: 40px;
    }

    .mobile-menu-btn {
        display: flex;
        width: 28px;
        height: 22px;
    }

    .mobile-menu-btn span {
        height: 2.5px;
    }

    .nav {
        display: none;
    }

    .nav-mobile {
        width: 85%;
        max-width: 300px;
    }

    .hero {
        padding: 48px 0;
    }

    .hero .container {
        gap: 28px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        line-height: 1.2;
    }

    .hero-content p {
        font-size: 1rem;
        margin-bottom: 24px;
        opacity: 0.9;
    }

    .main-price-display {
        flex-direction: column;
        gap: 8px;
    }

    .main-price-label {
        font-size: 1.1rem;
    }

    .main-price-value {
        font-size: 1.75rem;
    }

    .hero-image img {
        max-width: 100%;
    }

    .price-display {
        flex-direction: column;
        gap: 8px;
    }

    .price-label {
        font-size: 1.1rem;
    }

    .price-value {
        font-size: 1.75rem;
    }

    .products,
    .features,
    .order {
        padding: 56px 0;
    }

    .products h2,
    .features h2,
    .order h2 {
        font-size: 1.7rem;
        margin-bottom: 32px;
    }

    .product-gallery {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-item {
        border-radius: var(--radius-lg);
    }

    .product-item img,
    .product-item video {
        height: 240px;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .product-price {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        width: 100%;
        padding: 12px;
    }

    .features-grid {
        gap: 16px;
    }

    .feature-card {
        padding: 24px 20px;
        border-radius: var(--radius-lg);
    }

    .feature-card h3 {
        font-size: 1.1rem;
    }

    .feature-card p {
        font-size: 0.9rem;
    }

    .order-form {
        padding: 24px 20px;
        border-radius: var(--radius-lg);
    }

    fieldset {
        margin-bottom: 24px;
        padding-bottom: 20px;
    }

    legend {
        font-size: 1rem;
        padding-bottom: 12px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    label {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }

    input[type="text"],
    input[type="tel"],
    select,
    textarea {
        padding: 14px 16px;
        font-size: 1rem;
        min-height: 52px;
        border-radius: var(--radius-md);
    }

    select {
        min-height: 56px;
    }

    textarea {
        min-height: 110px;
    }

    .btn {
        padding: 16px 24px;
        font-size: 1rem;
        min-height: 56px;
        width: 100%;
        border-radius: var(--radius-md);
    }

    .btn-submit {
        padding: 18px 28px;
        font-size: 1.05rem;
    }

    .radio-group {
        flex-direction: column;
        gap: 12px;
    }

    .color-option {
        width: 100%;
        height: 52px;
        font-size: 0.95rem;
    }

    .price-summary {
        padding: 20px;
        border-radius: var(--radius-md);
    }

    .footer {
        padding: 28px 20px;
    }

    .footer p {
        font-size: 0.9rem;
    }
}

/* Mobile Extra Small (below 360px) */
@media (max-width: 359px) {
    html {
        font-size: 13px;
    }

    .container {
        padding: 0 12px;
    }

    .header .container {
        padding: 8px 12px;
    }

    .logo img {
        height: 36px;
    }

    .mobile-menu-btn {
        width: 26px;
        height: 20px;
    }

    .mobile-menu-btn span {
        height: 2px;
    }

    .nav-mobile {
        width: 85%;
    }

    .nav-mobile ul {
        padding: 70px 16px 16px;
    }

    .nav-mobile a {
        padding: 14px 16px;
        font-size: 1rem;
    }

    .hero {
        padding: 40px 0;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 0.95rem;
        margin-bottom: 20px;
    }

    .main-price-label {
        font-size: 1rem;
    }

    .main-price-value {
        font-size: 1.5rem;
    }

    .hero-image img {
        max-width: 100%;
        border-radius: var(--radius-lg);
    }

    .price-value {
        font-size: 1.5rem;
    }

    .products,
    .features,
    .order {
        padding: 48px 0;
    }

    .products h2,
    .features h2,
    .order h2 {
        font-size: 1.5rem;
        margin-bottom: 28px;
    }

    .product-gallery {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .product-item img,
    .product-item video {
        height: 200px;
    }

    .feature-card {
        padding: 20px 16px;
    }

    .order-form {
        padding: 20px 16px;
    }

    fieldset {
        margin-bottom: 20px;
        padding-bottom: 16px;
    }

    legend {
        font-size: 0.95rem;
        margin-bottom: 16px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    input[type="text"],
    input[type="tel"],
    select,
    textarea {
        padding: 12px 14px;
        font-size: 1rem;
        min-height: 50px;
    }

    .btn {
        padding: 14px 20px;
        font-size: 0.95rem;
        min-height: 52px;
    }

    .btn-submit {
        padding: 16px 24px;
        font-size: 1rem;
    }

    .color-option {
        height: 50px;
        font-size: 0.9rem;
    }

    .radio-label input[type="radio"] {
        width: 20px;
        height: 20px;
    }

    .footer {
        padding: 24px 16px;
    }

    .footer p {
        font-size: 0.85rem;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .product-item img,
    .product-item video {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Support (Optional - Auto based on system) */
@media (prefers-color-scheme: dark) {
    /* Uncomment below if you want dark mode support */
    /* 
    body {
        background-color: var(--nike-gray-900);
        color: var(--nike-gray-100);
    }
    
    .header {
        background: var(--nike-gray-800);
    }
    */
}

/* Print Styles */
@media print {
    .header,
    .nav-mobile,
    .mobile-menu-overlay,
    .btn-submit,
    .mobile-menu-btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .hero {
        background: white;
        color: black;
        min-height: auto;
        padding: 40px 0;
    }

    .hero-image {
        display: none;
    }
}