/* 
   Vihann Equipments and Machines Pvt. Ltd. - Premium Web Stylesheet
   Created with Sterile Cleanroom Aesthetics & High-End Industrial Styling
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Theme Variables - Clinical Light Theme (Default) */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.75);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --color-primary: #0d9488; /* Clinical Teal */
    --color-secondary: #06b6d4; /* Cleanroom Cyan */
    --color-accent: #0f766e;
    
    --border-color: rgba(13, 148, 136, 0.08);
    --border-glow: rgba(6, 182, 212, 0.15);
    --card-shadow: 0 10px 30px -10px rgba(148, 163, 184, 0.12), 0 1px 3px rgba(148, 163, 184, 0.05);
    --header-shadow: 0 4px 30px rgba(15, 23, 42, 0.03);
    
    --steel-gradient: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 50%, #94a3b8 100%);
    --primary-gradient: linear-gradient(135deg, #0d9488 0%, #06b6d4 100%);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

/* Dark Industrial Theme Overrides */
[data-theme="dark"] {
    --bg-primary: #090d16;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-glass: rgba(17, 24, 39, 0.8);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --color-primary: #14b8a6;
    --color-secondary: #22d3ee;
    --color-accent: #0f766e;
    
    --border-color: rgba(34, 211, 238, 0.1);
    --border-glow: rgba(34, 211, 238, 0.2);
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.3);
    --header-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    
    --steel-gradient: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
}

/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    transition: color var(--transition-normal);
}

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

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

ul {
    list-style: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--steel-gradient);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Glassmorphism Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--header-shadow);
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: #ffffff;
    padding: 2px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

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

.logo-icon {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3px;
    width: 36px;
    height: 36px;
    padding: 3px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 11px;
    line-height: 1;
    align-items: center;
    justify-items: center;
    box-shadow: 0 4px 10px rgba(6, 182, 212, 0.3);
}

.logo-icon span {
    display: block;
}

.logo-text h1 {
    font-size: 22px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.logo-text p {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}

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

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--color-primary);
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Custom Toggle Switcher for Dark Theme */
.theme-toggle {
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    position: relative;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.theme-toggle-dot {
    width: 18px;
    height: 18px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    position: absolute;
    top: 2px;
    left: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 10px;
    transition: var(--transition-normal);
}

[data-theme="dark"] .theme-toggle-dot {
    left: 22px;
    background: var(--color-secondary);
}

.rfq-cart-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary-gradient);
    color: #ffffff;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.25);
    transition: var(--transition-normal);
    position: relative;
}

.rfq-cart-trigger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.35);
}

.cart-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: #ef4444;
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-secondary);
}

/* Mobile Menu Button */
.menu-toggle {
    display: none;
    font-size: 24px;
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    padding: 160px 30px 100px;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, rgba(13, 148, 136, 0.02) 50%, transparent 100%);
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.05) 0%, transparent 70%);
    top: -10%;
    right: -10%;
    z-index: -1;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-content h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-content h2::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.hero-content h1 {
    font-size: 54px;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-content h1 span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    padding: 14px 28px;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px -6px rgba(6, 182, 212, 0.35);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-normal);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px -4px rgba(6, 182, 212, 0.45);
}

.btn-secondary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 14px 28px;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-normal);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: var(--color-secondary);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.stat-item h3 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-item p {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0;
}

/* Beautiful Interactive Custom 3D Illustration / Showcase for Hero */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.showcase-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 15px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    transition: var(--transition-normal);
}

.showcase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-fast);
}

.showcase-card:hover {
    transform: translateY(-6px);
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 15px 30px -10px rgba(148, 163, 184, 0.2);
}

.showcase-card:hover::before {
    opacity: 1;
}

.showcase-img-container {
    width: 100%;
    height: 75%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    margin-bottom: 10px;
}

.showcase-img-container img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    transition: var(--transition-normal);
}

.showcase-card:hover .showcase-img-container img {
    transform: scale(1.08);
}

.showcase-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
}

/* Client associates slider section */
.clients-section {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    overflow: hidden;
    position: relative;
}

.clients-title {
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 24px;
}

.clients-slider {
    display: flex;
    gap: 50px;
    width: max-content;
    animation: scroll-clients 90s linear infinite;
}

.clients-container {
    max-width: 100%;
    overflow: hidden;
    display: flex;
    position: relative;
}

.clients-container::before,
.clients-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.clients-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.clients-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.client-logo {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    color: var(--text-muted);
    opacity: 0.4;
    letter-spacing: -0.01em;
    padding: 8px 16px;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    transition: var(--transition-fast);
}

.client-logo:hover {
    opacity: 0.9;
    color: var(--color-primary);
    border-style: solid;
    border-color: var(--color-primary);
}

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

/* Core Catalog Hub Section */
.catalog-section {
    padding: 100px 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-header h2 {
    font-size: 38px;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 15px;
    color: var(--text-muted);
}

/* Premium Filter Layout */
.catalog-controls {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.search-bar-container {
    position: relative;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 16px 24px 16px 54px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition-normal);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--border-glow);
}

.search-icon {
    position: absolute;
    left: 22px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
}

/* Premium Category Filters Tabs */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    transition: var(--transition-normal);
}

.tab-btn:hover {
    border-color: var(--color-secondary);
    color: var(--color-primary);
}

.tab-btn.active {
    background: var(--primary-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.2);
}

/* Products Dynamic Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    transition: all 0.3s ease;
}

/* Elegant Premium Product Card */
.product-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-fast);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -15px rgba(148, 163, 184, 0.25);
    border-color: rgba(6, 182, 212, 0.25);
}

.product-card:hover::before {
    opacity: 1;
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
}

.product-icon {
    font-size: 38px;
    margin-bottom: 20px;
    color: var(--color-primary);
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.08) 0%, rgba(6, 182, 212, 0.02) 100%);
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-info h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-model {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.product-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-actions {
    display: flex;
    gap: 12px;
}

.btn-card-primary {
    flex: 1;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 13px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.btn-card-primary:hover {
    background: var(--color-primary);
    color: #ffffff;
}

.btn-card-secondary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

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

/* Dynamic slide-out RFQ Drawer */
.rfq-drawer {
    position: fixed;
    top: 0;
    right: -450px;
    width: 450px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 2000;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
    border-left: 1px solid var(--border-color);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.rfq-drawer.active {
    right: 0;
}

.drawer-header {
    padding: 24px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-header h3 {
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.drawer-close {
    font-size: 24px;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.drawer-close:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
}

.cart-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    gap: 16px;
}

.cart-empty-state i {
    font-size: 48px;
    color: var(--border-color);
}

.cart-items-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Elegant Cart Item Card */
.cart-item {
    display: grid;
    grid-template-columns: 1fr 12px;
    gap: 15px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.cart-item-info h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 4px;
}

.cart-item-info p {
    font-size: 11px;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.cart-item-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.qty-btn {
    width: 24px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
}

.qty-val {
    font-size: 13px;
    font-weight: 600;
}

.item-grade-select {
    padding: 4px 8px;
    font-size: 11px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
}

.cart-item-remove {
    align-self: start;
    color: #ef4444;
    opacity: 0.6;
    font-size: 14px;
    transition: var(--transition-fast);
}

.cart-item-remove:hover {
    opacity: 1;
}

.drawer-footer {
    padding: 30px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

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

.rfq-form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rfq-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
}

.rfq-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.btn-submit-rfq {
    width: 100%;
    background: var(--primary-gradient);
    color: #ffffff;
    padding: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-fast);
    margin-top: 10px;
}

.btn-submit-rfq:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.3);
}

/* Floating Backdrop Blur overlay */
.drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(4px);
    z-index: 1500;
    display: none;
}

.drawer-backdrop.active {
    display: block;
}

/* Beautiful Interactive Modal for Product Specifications */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-width: 650px;
    width: 100%;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    position: relative;
    animation: scale-up 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scale-up {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: 24px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 10;
}

.modal-close {
    font-size: 24px;
    color: var(--text-muted);
}

.modal-body {
    padding: 30px;
}

.modal-product-icon {
    font-size: 48px;
    color: var(--color-primary);
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.08) 0%, rgba(6, 182, 212, 0.02) 100%);
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.modal-product-info h3 {
    font-size: 24px;
    margin-bottom: 6px;
}

.modal-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.spec-entry h5 {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.spec-entry p {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-customization {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    gap: 15px;
}

.btn-modal-add {
    flex: 1;
    background: var(--primary-gradient);
    color: #ffffff;
    font-weight: 600;
    padding: 14px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Success submission overlay modal */
.success-modal {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    font-size: 60px;
    color: #22c55e;
    margin-bottom: 20px;
    animation: success-pulse 1.5s infinite;
}

@keyframes success-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); box-shadow: 0 0 20px rgba(34, 197, 94, 0.2); }
    100% { transform: scale(1); }
}

/* Toast Notification styling */
.toast {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--color-primary);
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    z-index: 5000;
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.active {
    transform: translateY(0);
    opacity: 1;
}

/* Spatial Storytelling / Factory Showcase Area */
.factory-section {
    padding: 100px 30px;
    background: var(--bg-tertiary);
}

.factory-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.factory-visual {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    padding: 40px;
    aspect-ratio: 1.2 / 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.factory-visual-isometric {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.factory-block {
    width: 260px;
    height: 140px;
    background: var(--steel-gradient);
    border-radius: 4px;
    position: relative;
    transform: rotateX(60deg) rotateZ(-30deg);
    box-shadow: -20px 20px 40px rgba(0, 0, 0, 0.2);
}

.factory-roof {
    position: absolute;
    top: -15px;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(90deg, #64748b 0px, #64748b 10px, #475569 10px, #475569 20px);
    border-radius: 4px;
    transform: translateZ(40px);
}

.factory-content h2 {
    font-size: 38px;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.factory-content p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.facility-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.feature-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-secondary);
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.feature-pill i {
    color: var(--color-primary);
}

.feature-pill span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Responsive Footer */
footer {
    background: #0b0f19;
    color: #94a3b8;
    padding: 80px 30px 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo .logo-text h1 {
    color: #ffffff;
}

.footer-logo p {
    font-size: 13px;
    line-height: 1.6;
}

.footer-column h4 {
    color: #ffffff;
    font-size: 15px;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column ul a {
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-column ul a:hover {
    color: var(--color-secondary);
    padding-left: 4px;
}

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-entry {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.contact-entry i {
    color: var(--color-secondary);
    font-size: 16px;
    margin-top: 3px;
}

.contact-entry p {
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 0;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
}

/* --- ADDED B2B TWO-COLUMN SIDEBAR & SIDEBAR LINKS STYLES --- */
.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 13.5px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.sidebar-nav-link i {
    font-size: 16px;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.sidebar-nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--color-primary);
    border-color: var(--border-color);
}

.sidebar-nav-link:hover i {
    color: var(--color-primary);
    transform: scale(1.1);
}

.sidebar-nav-link.active {
    background: var(--primary-gradient);
    color: #ffffff;
    font-weight: 600;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
}

.sidebar-nav-link.active i {
    color: #ffffff;
}

/* Category Layout Responsiveness */
@media (max-width: 992px) {
    .category-layout-container {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }
    .catalog-sidebar {
        position: static !important;
        width: 100% !important;
    }
    .catalog-sidebar ul {
        flex-direction: row !important;
        overflow-x: auto;
        padding-bottom: 10px;
        white-space: nowrap;
    }
    .sidebar-nav-link {
        white-space: nowrap;
    }
}

/* Responsiveness adjustments */
@media (max-width: 1200px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .factory-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    /* Header Streamlining to fit single row on Mobile and Tablets */
    .logo-text p {
        display: none !important; /* Hide "Equipment & Machines" */
    }
    
    .brochure-download-btn {
        display: none !important; /* Hide Brochure button in header */
    }
    
    .rfq-cart-trigger span {
        display: none !important; /* Hide "Quote Request" text, leave icon and badge */
    }
    
    .rfq-cart-trigger {
        padding: 10px 12px; /* Compress spacing */
        box-shadow: none;
    }
    
    .nav-container {
        padding: 12px 20px;
    }

    /* Robust CSS-controlled Mobile Menu drawer */
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg-glass);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--card-shadow);
        gap: 16px;
        z-index: 1001;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
        font-size: 24px;
        color: var(--text-primary);
        cursor: pointer;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .rfq-drawer {
        width: 100% !important;
        right: -100%;
    }
    
    .drawer-body, .drawer-footer {
        padding: 20px !important;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    /* Grids Auto-scaling */
    .catalog-summary-grid,
    .featured-categories-grid {
        grid-template-columns: 1fr !important; /* Single column on mobile */
        gap: 20px;
    }
    
    .category-card,
    .catalog-summary-card {
        aspect-ratio: auto !important; /* Let text content flow naturally */
        padding: 24px !important;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }

    /* Responsive Banners to prevent horizontal scroll */
    .category-header-banner {
        grid-template-columns: 1fr !important;
        padding: 20px !important;
        gap: 20px !important;
        text-align: center;
    }
    
    .category-banner-image-container {
        display: none !important;
    }
    
    /* Modal Specifications Adjustments for Mobile */
    .modal-overlay {
        padding: 10px;
    }
    
    .modal-container {
        margin: 10px;
        max-height: 92vh;
        overflow-y: auto;
        border-radius: var(--radius-md);
    }
    
    .modal-body {
        padding: 20px !important;
    }
    
    .specs-grid,
    .modal-customization {
        grid-template-columns: 1fr !important; /* Single column layout on mobile to prevent squishing */
        gap: 12px !important;
    }
    
    .spec-entry p {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    /* Tighten Header details for tiny smartphone viewports to guarantee single row fitting */
    .header-actions {
        gap: 10px !important;
    }
    .logo {
        gap: 8px !important;
    }
    .logo-text h1 {
        font-size: 16px !important;
        letter-spacing: -0.01em;
    }
    .logo-img {
        height: 28px !important;
    }
    .theme-toggle {
        width: 38px !important;
        height: 20px !important;
    }
    .theme-toggle-dot {
        width: 14px !important;
        height: 14px !important;
        top: 2px !important;
    }
    [data-theme="dark"] .theme-toggle-dot {
        left: 20px !important;
    }
    .rfq-cart-trigger {
        padding: 6px 10px !important;
    }
    .rfq-cart-trigger i {
        font-size: 16px;
    }
    .menu-toggle {
        font-size: 20px !important;
    }

    /* Adaptive column scale for small phones */
    .products-grid {
        grid-template-columns: 1fr !important; /* Single column */
        gap: 16px;
    }
    
    .hero-visual-grid {
        gap: 12px;
    }
    
    .showcase-card {
        padding: 10px;
    }
    
    .showcase-label {
        font-size: 10px;
    }
    
    /* Section padding normalization */
    .hero {
        padding: 120px 20px 60px;
    }
    
    .catalog-section,
    .factory-section,
    .products-showcase-section,
    .contact-grid {
        padding: 40px 20px !important;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    /* Contact Detail Card Adjustments */
    .contact-info-card {
        padding: 20px !important;
        gap: 15px !important;
    }
    
    .contact-form-panel {
        padding: 24px !important;
    }
}