/* ===================================
   DESIGN SYSTEM & CSS VARIABLES
   =================================== */

:root {
    /* Colors - Primary (Accent: Orange) */
    --primary-100: #FFF4E6;
    --primary-500: #F97316;
    --primary-700: #C2410C;
    
    /* Colors - Neutral (Grayscale) */
    --neutral-900: #111827;
    --neutral-600: #4B5563;
    --neutral-400: #9CA3AF;
    --neutral-100: #F3F4F6;
    --neutral-0: #FFFFFF;
    
    /* Colors - Semantic */
    --success: #10B981;
    --warning: #FBBF24;
    --error: #EF4444;
    
    /* Typography */
    --font-family: 'Poppins', sans-serif;
    
    /* Spacing (8px grid) */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 64px;
    --space-xxl: 96px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    
    /* Shadows */
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 8px 24px rgba(249, 115, 22, 0.12);
    
    /* Layout */
    --max-width: 1280px;
    
    /* Transitions */
    --transition-fast: 250ms ease-out;
    --transition-medium: 300ms ease-out;
    --transition-slow: 400ms ease-in-out;
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--neutral-900);
    background-color: var(--neutral-100);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    font-family: inherit;
    cursor: pointer;
}

ul {
    list-style: none;
}

/* ===================================
   CONTAINER & LAYOUT
   =================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1 {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.2;
}

h2 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
}

h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
}

/* ===================================
   BUTTONS
   =================================== */

.btn-primary {
    height: 48px;
    padding: 0 var(--space-md);
    background-color: var(--primary-500);
    color: var(--neutral-0);
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.btn-primary:hover {
    background-color: var(--primary-700);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    height: 48px;
    padding: 0 var(--space-md);
    background-color: transparent;
    color: var(--primary-500);
    font-size: 16px;
    font-weight: 500;
    border: 2px solid var(--primary-500);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-secondary:hover {
    background-color: var(--primary-100);
    border-color: var(--primary-700);
    color: var(--primary-700);
}

/* ===================================
   HEADER
   =================================== */

.header {
    background-color: var(--neutral-0);
    box-shadow: var(--shadow-card);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--neutral-900);
}

.tagline {
    font-size: 12px;
    color: var(--neutral-600);
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--neutral-600);
    font-size: 16px;
    font-weight: 500;
    transition: color var(--transition-fast);
    padding: var(--space-xs) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-500);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.search-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-600);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background-color: var(--neutral-100);
    color: var(--primary-500);
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding-left: var(--space-sm);
    border-left: 1px solid var(--neutral-400);
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-600);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--neutral-100);
    color: var(--primary-500);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--neutral-900);
}

/* Mobile Navigation */
.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--neutral-0);
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.1);
    z-index: 2000;
    transition: right var(--transition-slow);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
}

.nav-mobile.active {
    right: 0;
}

.nav-mobile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--neutral-400);
}

.nav-mobile-header span {
    font-size: 20px;
    font-weight: 700;
}

.close-mobile-menu {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-900);
}

.nav-mobile-link {
    padding: var(--space-sm);
    color: var(--neutral-600);
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-mobile-link:hover,
.nav-mobile-link.active {
    background-color: var(--primary-100);
    color: var(--primary-500);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   HERO BANNER
   =================================== */

.hero {
    position: relative;
    min-height: 560px;
    background-color: var(--neutral-0);
    overflow: hidden;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow);
}

.hero-slide.active {
    position: relative;
    opacity: 1;
    visibility: visible;
}

.hero-content {
    display: grid;
    grid-template-columns: 40% 60%;
    align-items: center;
    gap: var(--space-xl);
    min-height: 560px;
    padding: var(--space-xl) 0;
}

.hero-text h1 {
    margin-bottom: var(--space-md);
    color: var(--neutral-900);
}

.hero-text p {
    margin-bottom: var(--space-lg);
    color: var(--neutral-600);
    font-size: 18px;
}

.hero-image {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.hero-prev,
.hero-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background-color: var(--neutral-0);
    border-radius: 50%;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-900);
    transition: all var(--transition-fast);
    z-index: 10;
    opacity: 0;
}

.hero:hover .hero-prev,
.hero:hover .hero-next {
    opacity: 1;
}

.hero-prev:hover,
.hero-next:hover {
    background-color: var(--primary-500);
    color: var(--neutral-0);
}

.hero-prev {
    left: var(--space-md);
}

.hero-next {
    right: var(--space-md);
}

.hero-dots {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-sm);
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: var(--neutral-400);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.dot.active,
.dot:hover {
    background-color: var(--primary-500);
    transform: scale(1.2);
}

/* ===================================
   QUICK LINKS
   =================================== */

.quick-links {
    padding: var(--space-xxl) 0;
    background-color: var(--neutral-100);
}

.quick-links h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--neutral-900);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.quick-link-card {
    background-color: var(--neutral-0);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-medium);
    text-align: center;
}

.quick-link-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.quick-link-card svg {
    color: var(--primary-500);
}

.quick-link-card span {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-900);
}

/* ===================================
   PRODUCTS SECTION
   =================================== */

.products {
    padding: var(--space-xxl) 0;
    background-color: var(--neutral-0);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    color: var(--neutral-900);
}

.view-all {
    color: var(--primary-500);
    font-size: 16px;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.view-all:hover {
    color: var(--primary-700);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.product-card {
    background-color: var(--neutral-0);
    border: 1px solid var(--neutral-400);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all var(--transition-medium);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-500);
}

.product-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.product-info h3 {
    color: var(--neutral-900);
}

.product-price {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-500);
}

.product-actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.product-actions .btn-primary,
.product-actions .btn-secondary {
    flex: 1;
    height: 40px;
    font-size: 14px;
}

/* ===================================
   DISTRIBUTOR FORM
   =================================== */

.distributor {
    padding: var(--space-xxl) 0;
    background-color: var(--neutral-100);
}

.distributor-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.distributor-header h2 {
    color: var(--neutral-900);
    margin-bottom: var(--space-sm);
}

.distributor-header p {
    font-size: 18px;
    color: var(--neutral-600);
}

.distributor-form {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--neutral-0);
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-900);
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    height: 56px;
    padding: var(--space-sm);
    background-color: var(--neutral-0);
    border: 1px solid var(--neutral-400);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 16px;
    color: var(--neutral-900);
    transition: all var(--transition-fast);
}

.form-group textarea {
    height: auto;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border: 2px solid var(--primary-500);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--neutral-400);
}

.phone-input {
    display: flex;
    gap: var(--space-xs);
}

.country-code {
    width: 120px;
}

.phone-input input {
    flex: 1;
}

.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-area {
    border: 2px dashed var(--neutral-400);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-fast);
}

.file-upload-area:hover {
    border-color: var(--primary-500);
    background-color: var(--primary-100);
}

.file-upload-area svg {
    margin: 0 auto var(--space-sm);
    color: var(--primary-500);
}

.file-upload-area p {
    font-size: 16px;
    color: var(--neutral-900);
    margin-bottom: var(--space-xs);
}

.file-upload-area span {
    font-size: 14px;
    color: var(--neutral-600);
}

.file-list {
    margin-top: var(--space-sm);
}

.form-note {
    font-size: 14px;
    color: var(--neutral-600);
    margin: var(--space-md) 0;
}

.btn-submit {
    width: 100%;
    height: 56px;
    font-size: 18px;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background-color: var(--neutral-900);
    color: var(--neutral-0);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
}

.footer-col p {
    color: var(--neutral-400);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background-color: var(--primary-500);
    transform: translateY(-2px);
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: var(--space-sm);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-col ul li a {
    color: var(--neutral-400);
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--primary-500);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--neutral-400);
    font-size: 14px;
}

.contact-item svg {
    color: var(--primary-500);
    flex-shrink: 0;
}

.contact-item a {
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--primary-500);
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--neutral-400);
    font-size: 14px;
}

/* ===================================
   RESPONSIVE - TABLET
   =================================== */

@media (max-width: 1023px) {
    h1 {
        font-size: 48px;
    }
    
    h2 {
        font-size: 32px;
    }
    
    .nav-desktop {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .social-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .hero-text {
        order: 2;
    }
    
    .hero-image {
        order: 1;
    }
    
    .quick-links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===================================
   RESPONSIVE - MOBILE
   =================================== */

@media (max-width: 767px) {
    h1 {
        font-size: 36px;
    }
    
    h2 {
        font-size: 28px;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .logo-text {
        display: none;
    }
    
    .quick-links,
    .products,
    .distributor {
        padding: var(--space-xl) 0;
    }
    
    .hero {
        min-height: 400px;
    }
    
    .hero-content {
        min-height: 400px;
        padding: var(--space-md) 0;
    }
    
    .hero-text p {
        font-size: 16px;
    }
    
    .quick-links-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .distributor-form {
        padding: var(--space-md);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .hero-prev,
    .hero-next {
        display: none;
    }
}