/* ==========================================================================
   SREE VENKATESWARA INDUSTRIES (SVI) - MODERN INDUSTRIAL DESIGN SYSTEM
   Supports Light Mode (Default) and Dark Mode with Rich Micro-Interactions
   ========================================================================== */

/* 1. CSS CUSTOM PROPERTIES (THEME TOKENS) */
:root {
    /* Color Palette - Light Theme (Default) */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --border-color: #e2e8f0;
    --border-subtle: #f1f5f9;
    --border-focus: #0284c7;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    --accent-blue: #0284c7;
    --accent-blue-hover: #0369a1;
    --accent-blue-light: #e0f2fe;
    --accent-navy: #0f172a;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;

    --gradient-hero: linear-gradient(135deg, #0284c7 0%, #0369a1 50%, #0f172a 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.95) 100%);
    --gradient-text: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --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(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.25);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
    --bg-primary: #0b1120;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --bg-card: #131d31;
    --bg-glass: rgba(15, 23, 42, 0.88);
    --border-color: #334155;
    --border-subtle: #1e293b;
    --border-focus: #38bdf8;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;

    --accent-blue: #38bdf8;
    --accent-blue-hover: #0ea5e9;
    --accent-blue-light: rgba(56, 189, 248, 0.12);
    --accent-navy: #0284c7;

    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0369a1 100%);
    --gradient-card: linear-gradient(180deg, rgba(19, 29, 49, 0.95) 0%, rgba(15, 23, 42, 0.98) 100%);
    --gradient-text: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.3);
}

/* 2. BASE STYLING & RESET */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

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

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

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* 3. TOP ANNOUNCEMENT BAR */
.top-bar {
    background: #0b1120;
    color: #e2e8f0;
    font-size: 0.825rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.top-bar-contact {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.top-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: #cbd5e1;
}

.top-link:hover {
    color: #38bdf8;
}

.divider {
    color: #475569;
}

/* 4. MAIN NAVIGATION */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.logo-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.logo-subtitle {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--accent-blue);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.35rem 0;
    position: relative;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.theme-toggle-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

[data-theme="light"] .moon-icon {
    display: block;
}
[data-theme="light"] .sun-icon {
    display: none;
}
[data-theme="dark"] .moon-icon {
    display: none;
}
[data-theme="dark"] .sun-icon {
    display: block;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-toggle span {
    display: block;
    height: 2.5px;
    width: 100%;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.mobile-toggle.open span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}
.mobile-toggle.open span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.open span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* 5. BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.35rem;
    font-size: 0.925rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
}

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

.btn-outline:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-light {
    background-color: #ffffff;
    color: #0f172a;
}

.btn-light:hover {
    background-color: #f1f5f9;
}

.btn-whatsapp {
    background-color: #25d366;
    color: #ffffff;
}

.btn-whatsapp:hover {
    background-color: #20ba59;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.45rem 0.9rem;
    font-size: 0.825rem;
    border-radius: var(--radius-sm);
}

.btn-block {
    width: 100%;
}

/* 6. HERO SECTION */
.hero-section {
    position: relative;
    padding: 4.5rem 0 2rem 0;
    background-color: var(--bg-primary);
    overflow: hidden;
}

.hero-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.2;
}

.hero-glow-1 {
    width: 450px;
    height: 450px;
    background: var(--accent-blue);
    top: -50px;
    right: 5%;
}

.hero-glow-2 {
    width: 350px;
    height: 350px;
    background: var(--accent-cyan);
    bottom: 10%;
    left: 5%;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(100, 116, 139, 0.15) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.6;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(2, 132, 199, 0.2);
}

.badge-icon {
    font-weight: bold;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.18;
    margin-bottom: 1.25rem;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.hero-trust {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.trust-item svg {
    color: var(--accent-blue);
}

/* Hero Visual Card */
.hero-visual {
    position: relative;
}

.hero-card-container {
    position: relative;
}

.hero-card-glass {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-normal);
}

.hero-img-wrapper {
    position: relative;
    height: 320px;
    overflow: hidden;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.hero-card-glass:hover .hero-img {
    transform: scale(1.03);
}

.hero-img-overlay {
    position: absolute;
    bottom: 12px;
    left: 12px;
}

.facility-tag {
    background: rgba(15, 23, 42, 0.85);
    color: #ffffff;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
}

.hero-card-footer {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding: 1.25rem 1rem;
    background: var(--bg-tertiary);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.metric-val {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--accent-blue);
}

.metric-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Floating Badges */
.floating-badge {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.65rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    z-index: 5;
}

.floating-badge.top-right {
    top: -20px;
    right: -15px;
}

.floating-badge.bottom-left {
    bottom: -20px;
    left: -15px;
}

.fb-icon {
    font-size: 1.25rem;
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fb-text strong {
    display: block;
    font-size: 0.8rem;
    color: var(--text-primary);
}

.fb-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
}

@keyframes floatUpDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.animate-float {
    animation: floatUpDown 4s ease-in-out infinite;
}

.animate-float-delayed {
    animation: floatUpDown 4.5s ease-in-out 1.5s infinite;
}

/* STATS STRIP */
.stats-strip {
    margin-top: 4.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 2.5rem 0;
    position: relative;
    z-index: 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--accent-blue);
    margin-bottom: 0.25rem;
}

.stat-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

/* 7. SECTION COMMONS */
.section {
    padding: 5.5rem 0;
    position: relative;
}

.section-header {
    margin-bottom: 3.5rem;
}

.section-header.text-center {
    text-align: center;
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
}

.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--accent-blue);
    text-transform: uppercase;
    margin-bottom: 0.65rem;
}

.section-title {
    font-size: 2.35rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.text-body {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

/* 8. ABOUT SECTION */
.about-section {
    background-color: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 3.5rem;
    align-items: center;
}

.about-img-box {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.about-img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}

.about-quote-box {
    margin-top: 1.25rem;
    background: var(--bg-card);
    border-left: 4px solid var(--accent-blue);
    padding: 1.25rem 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.quote-symbol {
    font-size: 2.5rem;
    font-family: serif;
    color: var(--accent-blue);
    line-height: 1;
    opacity: 0.4;
}

.about-quote-box p {
    font-size: 0.95rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.quote-author {
    font-size: 0.825rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.about-heading {
    font-size: 1.65rem;
    margin-bottom: 1.25rem;
}

.about-pillars {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 2rem;
}

.pillar-card {
    display: flex;
    gap: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.15rem;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.pillar-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-blue);
}

.pillar-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pillar-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.pillar-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 9. PRODUCT CATALOG SECTION */
.products-section {
    background-color: var(--bg-secondary);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.55rem 1.15rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3.5rem;
}

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

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.product-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(15, 23, 42, 0.8);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
    z-index: 2;
}

.product-img-box {
    position: relative;
    height: 220px;
    background: #e2e8f0;
    overflow: hidden;
}

[data-theme="dark"] .product-img-box {
    background: #1e293b;
}

.product-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-img-box img {
    transform: scale(1.05);
}

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

.product-cat {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-blue);
    letter-spacing: 0.5px;
    margin-bottom: 0.35rem;
}

.product-title {
    font-size: 1.25rem;
    margin-bottom: 0.65rem;
}

.product-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 1.15rem;
    flex-grow: 1;
}

.product-specs-snippet {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 0.75rem 0.9rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
    border-left: 3px solid var(--accent-blue);
}

.product-specs-snippet span strong {
    color: var(--text-primary);
}

.card-action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* Catalog Lead Magnet Card */
.catalog-download-card {
    background: var(--gradient-hero);
    color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 2.5rem 3rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: center;
    box-shadow: var(--shadow-xl);
}

.cdc-icon {
    color: #38bdf8;
}

.cdc-text h3 {
    color: #ffffff;
    font-size: 1.45rem;
    margin-bottom: 0.4rem;
}

.cdc-text p {
    color: #e0f2fe;
    font-size: 0.95rem;
    max-width: 650px;
}

/* 10. SPECIFICATIONS SECTION */
.specs-section {
    background-color: var(--bg-primary);
}

.spec-tab-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.spec-tabs-header {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.spec-nav-tab {
    padding: 1.15rem 1.75rem;
    background: transparent;
    border: none;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
}

.spec-nav-tab:hover {
    color: var(--text-primary);
}

.spec-nav-tab.active {
    color: var(--accent-blue);
    background: var(--bg-card);
    border-bottom-color: var(--accent-blue);
}

.spec-tab-pane {
    display: none;
    padding: 2rem;
}

.spec-tab-pane.active {
    display: block;
}

.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    text-align: left;
}

.spec-table th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 700;
    padding: 0.9rem 1rem;
    border-bottom: 2px solid var(--border-color);
}

.spec-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.spec-table tr:hover td {
    background: var(--bg-tertiary);
}

.table-footer-note {
    margin-top: 1.25rem;
    padding: 0.85rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.825rem;
    color: var(--text-muted);
}

/* 11. MATERIALS MATRIX */
.materials-section {
    background-color: var(--bg-secondary);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
}

.material-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.material-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-blue);
}

.mat-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-blue);
    background: var(--accent-blue-light);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.85rem;
}

.material-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.material-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.mat-features {
    list-style: none;
    font-size: 0.825rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mat-features li {
    position: relative;
    padding-left: 1.2rem;
}

.mat-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: bold;
}

/* 12. FACILITY SECTION */
.facility-section {
    background-color: var(--bg-primary);
}

.facility-wrapper {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
}

.facility-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

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

.f-number {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--accent-blue);
    background: var(--accent-blue-light);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.f-item h4 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.f-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.facility-gallery {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.main-fg {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.main-fg img {
    width: 100%;
    height: 260px;
    object-fit: cover;
}

.fg-grid-sub {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.fg-sub {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.fg-sub img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

/* 13. WHY CHOOSE SECTION */
.why-section {
    background-color: var(--bg-secondary);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.why-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.why-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.why-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.65rem;
}

.why-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 14. RFQ CALLOUT BANNER */
.rfq-banner-section {
    padding: 3rem 0;
    background-color: var(--bg-primary);
}

.rfq-banner-box {
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    padding: 3.5rem;
    color: #ffffff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2.5rem;
    box-shadow: var(--shadow-xl);
}

.rfq-banner-content h2 {
    color: #ffffff;
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.rfq-banner-content p {
    color: #e0f2fe;
    font-size: 1.05rem;
    max-width: 600px;
}

.rfq-banner-btns {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    flex-shrink: 0;
}

/* 15. CONTACT SECTION */
.contact-section {
    background-color: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 3rem;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.contact-card-title {
    font-size: 1.45rem;
    margin-bottom: 0.65rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-top: 1.75rem;
}

.ci-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-item address {
    font-style: normal;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.contact-link {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

.phone-links {
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Forms */
.contact-form-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.site-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.required {
    color: #ef4444;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
    background: var(--bg-card);
}

.form-disclaimer {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

/* 16. FOOTER */
.site-footer {
    background: #090e1a;
    color: #94a3b8;
    padding-top: 4.5rem;
    border-top: 1px solid #1e293b;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 3rem;
    padding-bottom: 3.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.footer-title {
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
}

.footer-text {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: #94a3b8;
}

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

.f-badge {
    background: #1e293b;
    color: #38bdf8;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid #334155;
}

.footer-heading {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: #38bdf8;
    transform: translateX(3px);
}

.footer-address {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-contact-links p {
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
}

.footer-contact-links a {
    color: #38bdf8;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding: 1.5rem 0;
    font-size: 0.825rem;
}

.footer-bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* 17. MODAL STYLES */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(6px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

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

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalScaleIn 0.25s ease-out;
}

.modal-card.modal-lg {
    max-width: 880px;
}

@keyframes modalScaleIn {
    from { opacity: 0; transform: scale(0.96) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.35rem;
}

.modal-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.75rem;
    line-height: 1;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: 1.75rem;
}

.modal-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

/* 18. FLOATING BUTTONS */
.floating-actions {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.float-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
    border: none;
}

.float-whatsapp {
    background-color: #25d366;
    color: #ffffff;
}

.float-whatsapp:hover {
    background-color: #20ba59;
    transform: scale(1.1);
}

.float-call {
    background-color: var(--accent-blue);
    color: #ffffff;
}

.float-call:hover {
    background-color: var(--accent-blue-hover);
    transform: scale(1.1);
}

.float-top {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    display: none;
}

.float-top.visible {
    display: flex;
}

.float-top:hover {
    background-color: var(--border-color);
    transform: scale(1.1);
}

/* 19. RESPONSIVE BREAKPOINTS */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3.5rem;
    }
    .about-grid, .facility-wrapper, .contact-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .catalog-download-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .cdc-icon {
        margin: 0 auto;
    }
    .rfq-banner-box {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 2rem 1.5rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-xl);
        transform: translateY(-150%);
        transition: transform var(--transition-normal);
        z-index: 999;
    }
    .nav-menu.open {
        transform: translateY(0);
    }
    .mobile-toggle {
        display: flex;
    }
    .top-bar {
        display: none;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
}