/* 
   PRIYA PRECAST CO. - PREMIUM STYLESHEET
   Author: Antigravity Code Assistant
   Description: Fully responsive, modern, rich-industrial design system.
*/

/* --- CSS Variables & Design Tokens --- */
:root {
    /* Brand Colors */
    --color-primary: #801C2B;        /* Deep Brand Burgundy */
    --color-primary-light: #9C2E3C;  /* Lighter Brand Burgundy */
    --color-primary-dark: #58131E;   /* Dark Brand Burgundy */
    
    --color-accent: #D97706;         /* Brand Amber/Gold */
    --color-accent-light: #F59E0B;   /* Highlight Gold */
    --color-accent-dark: #B45309;    /* Dark Amber */
    
    /* Neutral System */
    --color-bg-base: #FFFFFF;        /* Pure White */
    --color-bg-alt: #F9FAFB;         /* Warm Off-White / Stone Light */
    --color-bg-element: #F3F4F6;     /* Light Concrete Grey */
    --color-bg-dark: #111827;        /* Coal Dark Black */
    --color-bg-dark-alt: #1F2937;    /* Slate Dark Grey */
    
    --color-text-main: #1F2937;      /* Coal Text */
    --color-text-muted: #4B5563;     /* Slate Muted Text */
    --color-text-light: #9CA3AF;     /* Soft Grey */
    --color-text-white: #FFFFFF;     /* White text */
    
    /* Layout Details */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-full: 9999px;
    
    /* Shadows & Elevation */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transition Defaults */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --header-height: 80px;
    --marquee-height: 46px;
}

/* --- Global Resets & Defaults --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    background-color: var(--color-bg-base);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

ul {
    list-style: none;
}

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

/* --- Utility Typography & Layouts --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin-right: auto;
    margin-left: auto;
    padding-right: 1.5rem;
    padding-left: 1.5rem;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

.section-header {
    margin-bottom: 4rem;
}

.section-subtitle {
    display: inline-block;
    color: var(--color-accent);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 1.25rem;
    position: relative;
}

.section-desc {
    max-width: 700px;
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

/* Buttons Styling */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

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

.btn-secondary {
    background-color: var(--color-accent);
    color: var(--color-text-white);
}

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

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

.btn-outline:hover {
    background-color: var(--color-text-white);
    color: var(--color-primary-dark);
}

.btn-outline-white {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-text-white);
}

.btn-outline-white:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-text-white);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: var(--border-radius-full);
}

.badge-accent {
    background-color: var(--color-accent);
    color: var(--color-text-white);
}

/* Forms Styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .col {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text-main);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid #D1D5DB;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(156, 46, 60, 0.15);
}

textarea.form-control {
    resize: vertical;
}

/* --- Header & Navigation --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    z-index: 100;
    transition: var(--transition-normal);
}

.main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    height: 70px;
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Premium Dynamic Logo */
.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-visual {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 28px;
    width: 28px;
}

.logo-bar {
    width: 6px;
    border-radius: 2px 2px 0 0;
    background-color: var(--color-primary);
    transition: var(--transition-normal);
}

.bar-1 { height: 14px; background-color: var(--color-accent); }
.bar-2 { height: 28px; }
.bar-3 { height: 20px; background-color: var(--color-primary-light); }

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

.brand-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--color-primary-dark);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.brand-tagline {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    position: relative;
    padding: 0.25rem 0;
}

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

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.call-btn {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid rgba(128, 28, 43, 0.2);
}

.call-btn:hover {
    background-color: rgba(128, 28, 43, 0.05);
    border-color: var(--color-primary);
    transform: none;
    box-shadow: none;
}

.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.toggle-bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary-dark);
    transition: var(--transition-normal);
}

/* --- Mobile Drawer Menu --- */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    transition: var(--transition-normal);
}

.mobile-menu-overlay.open {
    left: 0;
}

.mobile-menu-content {
    width: 300px;
    height: 100%;
    background-color: var(--color-bg-base);
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.mobile-menu-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-main);
}

.mobile-logo {
    margin-bottom: 3rem;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: auto;
}

.mobile-link {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-main);
}

.mobile-link:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.mobile-contact-info {
    border-top: 1px solid var(--color-bg-element);
    padding-top: 1.5rem;
}

.mobile-contact-info p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}

.mobile-contact-info i {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

.mobile-cta {
    margin-top: 1rem;
    width: 100%;
}

/* --- Hero Slider --- */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    width: 100%;
    background-color: var(--color-bg-dark);
    color: var(--color-text-white);
    overflow: hidden;
}

.slider-container {
    height: 100%;
    width: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    transition: opacity var(--transition-slow);
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slide-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.slide-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.05);
    transition: transform 10s ease-out;
}

.slide.active .slide-image-wrapper img {
    transform: scale(1);
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(16, 24, 40, 0.95) 0%, rgba(16, 24, 40, 0.5) 50%, rgba(16, 24, 40, 0.2) 100%);
}

.slide-content {
    max-width: 800px;
    padding-left: 8%;
    padding-right: 2rem;
    z-index: 10;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    color: var(--color-text-white);
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Animations in Slider */
.animate-text {
    opacity: 0;
    transform: translateY(30px);
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.slide.active .animate-text {
    opacity: 1;
    transform: translateY(0);
}

.slide.active .delay-1 {
    transition-delay: 0.2s;
}

.slide.active .delay-2 {
    transition-delay: 0.4s;
}

/* Slider Controls */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-white);
    cursor: pointer;
    z-index: 15;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-normal);
}

.slider-btn:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.prev-btn { left: 2rem; }
.next-btn { right: 2rem; }

.slider-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 15;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: var(--border-radius-full);
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition-normal);
}

.dot.active {
    background-color: var(--color-accent);
    width: 30px;
}

/* --- Trust / Certifications Section --- */
.trust-section {
    padding: 7rem 0;
    background-color: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-bg-element);
}

.trust-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.features-list {
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.feature-item {
    display: flex;
    gap: 1.25rem;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
    background-color: rgba(128, 28, 43, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
}

.feature-title {
    font-size: 1.15rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.25rem;
}

.feature-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.trust-visuals {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.badge-card {
    background-color: var(--color-bg-base);
    border-radius: var(--border-radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-bg-element);
    text-align: center;
}

.primary-badge {
    border-top: 5px solid var(--color-primary);
}

/* Styled BIS ISI Seal */
.isi-logo {
    display: inline-flex;
    flex-direction: column;
    border: 2px solid var(--color-text-main);
    padding: 0.5rem 1rem;
    font-family: Arial, sans-serif;
    font-weight: bold;
    color: var(--color-text-main);
    margin-bottom: 1.5rem;
    line-height: 1;
}

.isi-top {
    font-size: 0.55rem;
    letter-spacing: 0.05em;
    border-bottom: 1.5px solid var(--color-text-main);
    padding-bottom: 3px;
    margin-bottom: 3px;
}

.isi-middle {
    font-size: 1.85rem;
    letter-spacing: 0.1em;
    padding-left: 0.1em;
    font-weight: 900;
}

.isi-bottom {
    font-size: 0.45rem;
    letter-spacing: 0.02em;
    border-top: 1.5px solid var(--color-text-main);
    padding-top: 3px;
    margin-top: 3px;
}

.primary-badge p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.stats-badge {
    background-color: var(--color-primary-dark);
    color: var(--color-text-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-accent-light);
    line-height: 1;
}

.stat-label {
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* --- Products Showcase --- */
.products-section {
    padding: 7rem 0;
    background-color: var(--color-bg-base);
}

.filter-controls {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3.5rem;
}

.search-box {
    position: relative;
    max-width: 500px;
    width: 100%;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-light);
}

#product-search {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    font-size: 1.05rem;
    border: 1px solid #E5E7EB;
    border-radius: var(--border-radius-full);
    background-color: var(--color-bg-alt);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

#product-search:focus {
    background-color: var(--color-bg-base);
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
}

.search-clear {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
}

.category-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tab-btn {
    padding: 0.6rem 1.35rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--color-bg-element);
    background-color: var(--color-bg-alt);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition-normal);
}

.tab-btn:hover {
    background-color: var(--color-bg-element);
    color: var(--color-primary-dark);
}

.tab-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-white);
    box-shadow: var(--shadow-md);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--color-bg-base);
    border: 1px solid var(--color-bg-element);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(128, 28, 43, 0.15);
}

/* Product Card Graphics/Drawings styling */
.product-visual-container {
    height: 180px;
    background: linear-gradient(135deg, #F3F4F6 0%, #E5E7EB 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-bg-element);
}

/* Real product photo inside card */
.product-real-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0.5rem;
    filter: drop-shadow(0 6px 12px rgba(0,0,0,0.15));
    transition: transform var(--transition-normal);
}

.product-card:hover .product-real-img {
    transform: scale(1.08);
}

.product-spec-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--color-bg-element);
    padding: 0.25rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    color: var(--color-primary);
}

.product-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-title {
    font-size: 1.2rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
}

.product-quick-specs {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.quick-spec {
    font-size: 0.825rem;
    color: var(--color-text-muted);
    display: flex;
    justify-content: space-between;
}

.quick-spec span:first-child {
    font-weight: 600;
    color: var(--color-text-main);
}

.product-card-cta {
    margin-top: auto;
    width: 100%;
}

/* Empty search states styling */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
}

.empty-icon {
    font-size: 4rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--color-text-muted);
}

/* --- Quote / Estimator Calculator --- */
.calculator-section {
    padding: 7rem 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-bg-element);
    border-bottom: 1px solid var(--color-bg-element);
}

.calculator-card {
    background-color: var(--color-bg-base);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-bg-element);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.calculator-form-side {
    padding: 4rem;
}

.calculator-result-side {
    background-color: var(--color-primary-dark);
    color: var(--color-text-white);
    padding: 4rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.calculator-result-side::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -20%;
    width: 300px;
    height: 300px;
    border-radius: var(--border-radius-full);
    background-color: rgba(255, 255, 255, 0.03);
    pointer-events: none;
}

.results-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.results-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

#result-product-name {
    color: var(--color-accent-light);
    font-weight: 600;
}

.results-metrics {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.metric-box {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.metric-box.highlighted {
    background-color: rgba(217, 119, 6, 0.1);
    border-color: rgba(217, 119, 6, 0.3);
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.5rem;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.metric-value small {
    font-size: 1.25rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
}

.results-specs {
    margin-bottom: auto;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-bottom: 2rem;
}

.spec-line {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
    padding-bottom: 0.25rem;
}

/* --- Contact Section --- */
.contact-section {
    padding: 7rem 0;
    background-color: var(--color-bg-base);
}

.contact-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    margin-top: 4rem;
}

.contact-info-panel {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-bg-element);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.panel-title {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
}

.panel-desc {
    color: var(--color-text-muted);
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item {
    display: flex;
    gap: 1.25rem;
}

.info-content h4 {
    font-size: 1.05rem;
    color: var(--color-text-main);
    margin-bottom: 0.25rem;
}

.info-content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.info-content a {
    color: var(--color-primary);
    font-weight: 600;
}

.info-content a:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

/* Interactive Map Placeholder */
.map-container {
    margin-top: auto;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    height: 220px;
    border: 1px solid var(--color-bg-element);
    position: relative;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    display: block;
}

.map-open-btn {
    position: absolute;
    bottom: 0.75rem;
    right: 0.75rem;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-full);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    box-shadow: var(--shadow-md);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.map-open-btn:hover {
    background: var(--color-primary-light);
    transform: translateY(-1px);
}

/* Contact Form Side */
.contact-form-panel {
    background-color: var(--color-bg-base);
    border: 1px solid var(--color-bg-element);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

/* --- Footer --- */
.main-footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-white);
    padding: 5rem 0 2rem 0;
    border-top: 5px solid var(--color-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-text-white);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-badges {
    display: flex;
    gap: 0.5rem;
}

.cert-badge {
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    letter-spacing: 0.02em;
}

.footer-links h4, .footer-products-quick h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin-bottom: 1.5rem;
    color: var(--color-accent-light);
    font-weight: 600;
}

.footer-links ul, .footer-products-quick ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a, .footer-products-quick a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
}

.footer-links a:hover, .footer-products-quick a:hover {
    color: var(--color-accent-light);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* --- Modals Systems (Details & Success) --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(16, 24, 40, 0.6);
    backdrop-filter: blur(6px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
    padding: 1.5rem;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background-color: var(--color-bg-base);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-container {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-bg-element);
    border: none;
    cursor: pointer;
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-main);
    z-index: 10;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

/* Modal Content Details Layout */
.modal-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.modal-visual-side {
    background: linear-gradient(135deg, #F3F4F6 0%, #E5E7EB 100%);
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--color-bg-element);
}

/* Real product photo inside modal */
.modal-real-img {
    max-height: 280px;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 12px 24px rgba(0,0,0,0.2));
    border-radius: var(--border-radius-sm);
}

.modal-info-side {
    padding: 3rem;
    display: flex;
    flex-direction: column;
}

.modal-product-cat {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.modal-product-title {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.modal-product-desc {
    color: var(--color-text-muted);
    font-size: 0.975rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-specs-table {
    border-top: 1px solid var(--color-bg-element);
    margin-bottom: 2rem;
}

.modal-spec-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-bg-element);
    font-size: 0.9rem;
}

.modal-spec-row span:first-child {
    font-weight: 600;
    color: var(--color-text-main);
}

.modal-spec-row span:last-child {
    color: var(--color-text-muted);
}

.modal-actions {
    margin-top: auto;
    display: flex;
    gap: 1rem;
}

/* Success Modal Details */
.success-container {
    max-width: 450px;
    padding: 3.5rem 2.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.success-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-full);
    background-color: rgba(16, 185, 129, 0.1);
    color: #10B981;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin-bottom: 1.75rem;
}

.success-container h2 {
    font-size: 1.75rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
}

.success-container p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
    .trust-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .trust-visuals {
        flex-direction: row;
    }
    
    .trust-visuals > div {
        flex: 1;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-result-side {
        padding-top: 3rem;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .main-nav {
        display: none;
    }
    
    .quote-header-btn {
        display: none;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-section {
        height: 80vh;
    }
    
    .slider-btn {
        display: none; /* Hide slider arrows on mobile, rely on dots & swipe */
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .modal-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-visual-side {
        padding: 2rem;
        border-right: none;
        border-bottom: 1px solid var(--color-bg-element);
    }
    
    .modal-visual-side svg {
        max-height: 180px;
    }
    
    .modal-info-side {
        padding: 2rem;
    }
    
    .trust-visuals {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .call-btn span {
        display: none; /* Hide text, just show icon on very small screen header */
    }

    .header-actions {
        gap: 0.5rem;
    }
}

/* ── Category Marquee Strip ── */
.category-marquee-wrap {
    background: var(--color-primary-dark);
    overflow: hidden;
    padding: 0;
    border-top: 3px solid var(--color-accent);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 10;
}

.marquee-track {
    display: flex;
    width: 100%;
    overflow: hidden;
}

.marquee-inner {
    display: flex;
    align-items: center;
    white-space: nowrap;
    animation: marquee-scroll 28s linear infinite;
    will-change: transform;
}

.marquee-inner:hover {
    animation-play-state: paused;
}

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

.marquee-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-white);
    transition: color var(--transition-fast);
    cursor: default;
}

.marquee-item i {
    color: var(--color-accent-light);
    font-size: 0.95rem;
}

.marquee-item:hover {
    color: var(--color-accent-light);
}

.marquee-sep {
    color: var(--color-accent);
    font-size: 0.5rem;
    opacity: 0.7;
    flex-shrink: 0;
}

/* ── Gallery Section ── */
.gallery-section {
    background: var(--color-bg-alt);
    padding: 5rem 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.2rem;
    margin-top: 2.5rem;
}

.gallery-card {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    cursor: pointer;
    position: relative;
    aspect-ratio: 4/3;
    background: var(--color-bg-element);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.gallery-img-wrap {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.gallery-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
    display: block;
}

.gallery-card:hover .gallery-img-wrap img {
    transform: scale(1.06);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-normal);
}

.gallery-overlay i {
    color: #fff;
    font-size: 1.6rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
    filter: drop-shadow(0 2px 8px rgba(0,0,0,.5));
}

.gallery-card:hover .gallery-overlay {
    background: rgba(0, 0, 0, 0.38);
}

.gallery-card:hover .gallery-overlay i {
    opacity: 1;
}

.gallery-card-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.72));
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 1.8rem 0.9rem 0.65rem;
    pointer-events: none;
}

.gallery-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-muted);
}

.gallery-empty i {
    font-size: 3rem;
    opacity: 0.25;
    display: block;
    margin-bottom: 1rem;
}

/* Lightbox */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.93);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

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

.lightbox-img-wrap {
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}

.lightbox-img-wrap img {
    max-width: 88vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    display: block;
    margin: 0 auto;
}

.lightbox-caption {
    color: rgba(255,255,255,0.65);
    font-size: 0.88rem;
    margin-top: 0.9rem;
    font-family: var(--font-body);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: fixed;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 50%;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
    z-index: 2001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255,255,255,0.22);
}

.lightbox-close { top: 1.4rem; right: 1.4rem; }
.lightbox-prev  { left: 1.4rem; top: 50%; transform: translateY(-50%); }
.lightbox-next  { right: 1.4rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 640px) {
    .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
    .lightbox-prev { left: 0.5rem; }
    .lightbox-next { right: 0.5rem; }
}

/* ── Floating WhatsApp Button ── */
.wa-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 58px;
    height: 58px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    z-index: 999;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    animation: wa-pulse 2.5s ease-in-out infinite;
}

.wa-float svg {
    width: 30px;
    height: 30px;
}

.wa-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.65);
    animation: none;
}

.wa-float__tooltip {
    position: absolute;
    right: calc(100% + 12px);
    background: #1f2937;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 500;
    white-space: nowrap;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transform: translateX(6px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.wa-float__tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-left-color: #1f2937;
}

.wa-float:hover .wa-float__tooltip {
    opacity: 1;
    transform: translateX(0);
}

@keyframes wa-pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5); }
    50%       { box-shadow: 0 4px 32px rgba(37, 211, 102, 0.8); }
}

@media (max-width: 480px) {
    .wa-float { bottom: 1.25rem; right: 1.25rem; width: 52px; height: 52px; }
    .wa-float svg { width: 26px; height: 26px; }
    .wa-float__tooltip { display: none; }
}