/* ===================================
   MANOJ TRADING CO. - REFINED STYLESHEET
   Professional Chemical Trading Website
   =================================== */

/* ===================================
   STYLE GUIDE
   ===================================
   
   TYPOGRAPHY SCALE:
   - H1: 48px (3rem) - Hero titles
   - H2: 36px (2.25rem) - Section titles
   - H3: 24px (1.5rem) - Card titles
   - H4: 18px (1.125rem) - Subsections
   - Body: 16px (1rem) - Default text
   - Small: 14px (0.875rem) - Supporting text
   
   COLOR PALETTE:
   - Primary: #1A2E4A (Deep Navy)
   - Accent: #F5A623 (Professional Gold)
   - Success: #00B4A6 (Teal)
   - Background: #F9F9F9 (Off-white)
   - Text: #2D2D2D (Dark Charcoal)
   - Text Light: #6B7280 (Medium Gray)
   
   SPACING SCALE:
   - xs: 8px (0.5rem)
   - sm: 16px (1rem)
   - md: 24px (1.5rem)
   - lg: 32px (2rem)
   - xl: 48px (3rem)
   - xxl: 60px (3.75rem)
   
   BREAKPOINTS:
   - Mobile: 480px
   - Tablet: 768px
   - Desktop: 1024px
   - Large: 1280px
   
   =================================== */

/* ===================================
   CSS VARIABLES
   =================================== */

:root {
    /* Colors */
    --primary: #1A2E4A;
    --primary-light: #2A4263;
    --accent: #F5A623;
    --accent-hover: #E09612;
    --success: #00B4A6;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9F9F9;
    --bg-tertiary: #F4F4F4;
    --text-primary: #2D2D2D;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --border-color: #E5E7EB;
    
    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Montserrat', 'Helvetica Neue', sans-serif;
    
    /* Font Sizes - Enhanced for elegance */
    --text-xs: 0.8125rem;   /* 13px */
    --text-sm: 0.9375rem;   /* 15px */
    --text-base: 1.0625rem; /* 17px */
    --text-lg: 1.25rem;     /* 20px */
    --text-xl: 1.75rem;     /* 28px */
    --text-2xl: 2.5rem;     /* 40px */
    --text-3xl: 3.5rem;     /* 56px */
    
    /* Spacing */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px */
    --spacing-lg: 2rem;     /* 32px */
    --spacing-xl: 3rem;     /* 48px */
    --spacing-xxl: 3.75rem; /* 60px */
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --max-width: 1200px;
    --nav-height: 120px;
}

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

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

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

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--text-primary);
    background: linear-gradient(135deg, #f5f7fa 0%, #e8eef5 50%, #f5f7fa 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: 0.01em;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(26, 46, 74, 0.02) 35px, rgba(26, 46, 74, 0.02) 70px);
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

h1 { 
    font-size: var(--text-3xl);
    letter-spacing: -0.03em;
}

h2 { 
    font-size: var(--text-2xl);
    letter-spacing: -0.02em;
}

h3 { 
    font-size: var(--text-xl);
    letter-spacing: -0.01em;
}

h4 { 
    font-size: var(--text-lg);
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent);
}

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

/* ===================================
   UTILITY CLASSES
   =================================== */

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

.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

.section-alt {
    background: linear-gradient(180deg, rgba(249, 249, 249, 0.95) 0%, rgba(240, 245, 250, 0.95) 100%);
    position: relative;
}

.section-alt::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(245, 166, 35, 0.03) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(26, 46, 74, 0.03) 0%, transparent 30%);
    pointer-events: none;
}

.text-center {
    text-align: center;
}

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--nav-height);
}

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

.logo-img {
    height: 110px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
    border: none;
    outline: none;
    background: transparent;
}

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

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--text-sm);
    letter-spacing: 0.5px;
    transition: var(--transition);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--accent);
    color: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius);
    font-weight: 600;
}

.nav-cta:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    margin-top: var(--nav-height);
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(26, 46, 74, 0.9), rgba(26, 46, 74, 0.85)), 
                url('images/chemical.jpeg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--bg-primary);
}

.hero-content {
    max-width: 700px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--bg-primary);
}

.hero-subtitle {
    font-size: var(--text-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--bg-primary);
    border-color: var(--bg-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-primary);
    color: var(--primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--bg-primary);
}

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

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

.title-accent {
    width: 60px;
    height: 4px;
    background-color: var(--accent);
    margin: 0 auto var(--spacing-md);
    border-radius: 2px;
}

/* ===================================
   CARD COMPONENTS
   =================================== */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--bg-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   FEATURES / OFFERINGS
   =================================== */

.offerings {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.7) 0%, rgba(232, 238, 245, 0.8) 100%);
    position: relative;
}

.offerings::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 20% 50%, rgba(245, 166, 35, 0.05) 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, rgba(26, 46, 74, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.offerings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.offering-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.offering-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.offering-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.offering-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xs);
}

.offering-card p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

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

.products {
    background-color: var(--bg-primary);
}

.product-category {
    margin-bottom: var(--spacing-xl);
}

.category-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border-left: 4px solid var(--accent);
    margin-bottom: var(--spacing-lg);
}

.category-title {
    font-size: var(--text-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.category-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: var(--bg-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* Container for electroplating products scroll */
.product-category:first-child .products-scroll-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: var(--spacing-md) 0;
}

.product-category:first-child .products-scroll-wrapper {
    display: flex;
    gap: var(--spacing-lg);
    animation: scroll-products 40s linear infinite;
    width: fit-content;
}

.product-category:first-child .products-scroll-wrapper:hover {
    animation-play-state: paused;
}

.product-category:first-child .products-grid {
    display: flex;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

@keyframes scroll-products {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.product-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--accent);
    transition: var(--transition);
}

.product-category:first-child .product-card {
    min-width: 320px;
    flex-shrink: 0;
}

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

.product-card h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-sm);
}

.product-card p {
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-md);
}

.product-card ul {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.product-card li {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.product-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

/* ===================================
   PARTNERS SECTION
   =================================== */

.partners {
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.partners-scroll-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: var(--spacing-md) 0;
}

.partners-scroll-wrapper {
    display: flex;
    gap: var(--spacing-lg);
    animation: scroll-partners 30s linear infinite;
    width: fit-content;
}

.partners-scroll-wrapper:hover {
    animation-play-state: paused;
}

/* Duplicate partners for seamless loop */
.partners-grid {
    display: flex;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

@keyframes scroll-partners {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.partner-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    min-width: 250px;
    flex-shrink: 0;
}

.partner-card:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.partner-logo {
    max-width: 180px;
    height: 100px;
    object-fit: contain;
    margin: 0 auto var(--spacing-sm);
    filter: grayscale(30%);
    transition: var(--transition);
}

.partner-card:hover .partner-logo {
    filter: grayscale(0%);
}

.partner-card h3 {
    font-size: var(--text-base);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact {
    background-color: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
}

.contact-item i {
    font-size: var(--text-lg);
    color: var(--accent);
    margin-top: 4px;
}

.contact-item h4 {
    font-size: var(--text-base);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: var(--text-sm);
    margin: 0;
}

.contact-form {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: var(--text-base);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.1);
}

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

.footer {
    background-color: var(--primary);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--bg-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
}

.footer-section a:hover {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
}

/* ===================================
   FLOATING ELEMENTS
   =================================== */

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 20px 40px rgba(37, 211, 102, 0.4);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    :root {
        --nav-height: 70px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: var(--nav-height);
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        padding: var(--spacing-lg) 0;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .card-grid,
    .offerings-grid,
    .products-grid,
    .partners-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xxl: 2.5rem;
        --text-2xl: 1.75rem;
        --text-3xl: 2.25rem;
    }
    
    .logo-img {
        height: 50px;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* ===================================
   ACCESSIBILITY
   =================================== */

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===================================
   PRINT STYLES
   =================================== */

@media print {
    .navbar,
    .whatsapp-float,
    .hamburger,
    .hero-buttons {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}