/* 
 * NEERO COOLTECH INDIA - Core Design System & Styling
 * Premium B2B Industrial Aesthetics
 */

/* ==========================================================================
   1. Design System & CSS Variables
   ========================================================================== */
:root {
    /* Fonts */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Layout Constants */
    --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);
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --container-max-width: 1200px;
    --header-height: 80px;
    --top-bar-height: 40px;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
    --bg-base: hsl(220, 30%, 8%);
    --bg-surface: hsl(220, 25%, 12%);
    --bg-surface-alt: hsl(220, 20%, 16%);
    --bg-glass: rgba(13, 17, 23, 0.75);
    
    --text-primary: hsl(0, 0%, 96%);
    --text-secondary: hsl(220, 10%, 70%);
    --text-muted: hsl(220, 10%, 50%);
    
    --primary: hsl(195, 100%, 45%);
    --primary-hover: hsl(195, 100%, 55%);
    --primary-glow: rgba(0, 180, 216, 0.3);
    
    --secondary: hsl(220, 15%, 20%);
    --secondary-hover: hsl(220, 15%, 26%);
    
    --accent: hsl(150, 70%, 45%);
    --border-color: hsl(220, 20%, 18%);
    --border-hover: hsl(195, 50%, 30%);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
    
    --input-bg: hsl(220, 25%, 10%);
    --hero-overlay: linear-gradient(135deg, rgba(8, 12, 18, 0.95) 0%, rgba(13, 27, 42, 0.85) 100%);
    --card-gradient: linear-gradient(135deg, hsl(220, 25%, 13%) 0%, hsl(220, 25%, 10%) 100%);
    --accent-glow-opacity: 0.15;
}

/* Light Theme */
[data-theme="light"] {
    --bg-base: hsl(220, 15%, 96%);
    --bg-surface: hsl(0, 0%, 100%);
    --bg-surface-alt: hsl(220, 15%, 92%);
    --bg-glass: rgba(255, 255, 255, 0.85);
    
    --text-primary: hsl(220, 30%, 15%);
    --text-secondary: hsl(220, 20%, 40%);
    --text-muted: hsl(220, 15%, 55%);
    
    --primary: hsl(200, 95%, 40%);
    --primary-hover: hsl(200, 95%, 35%);
    --primary-glow: rgba(0, 119, 182, 0.2);
    
    --secondary: hsl(220, 15%, 88%);
    --secondary-hover: hsl(220, 15%, 80%);
    
    --accent: hsl(150, 80%, 35%);
    --border-color: hsl(220, 15%, 85%);
    --border-hover: hsl(200, 50%, 70%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    --input-bg: hsl(0, 0%, 98%);
    --hero-overlay: linear-gradient(135deg, rgba(240, 244, 248, 0.95) 0%, rgba(224, 235, 245, 0.85) 100%);
    --card-gradient: linear-gradient(135deg, hsl(0, 0%, 100%) 0%, hsl(220, 15%, 97%) 100%);
    --accent-glow-opacity: 0.05;
}

/* ==========================================================================
   2. Reset & General Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    margin: 0 !important;
    padding: 0 !important;
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    margin: 0 !important;
    padding: 0 !important;
    display: flex;
    flex-direction: column;
    min-height: 100%;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    position: relative;
}

body.menu-open {
    overflow: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 25%, rgba(0, 180, 216, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 80% 75%, rgba(37, 211, 102, 0.03) 0%, transparent 45%);
    pointer-events: none;
    z-index: -2;
}

[data-theme="light"] body::before {
    background: radial-gradient(circle at 20% 25%, rgba(0, 119, 182, 0.03) 0%, transparent 45%),
                radial-gradient(circle at 80% 75%, rgba(37, 211, 102, 0.02) 0%, transparent 45%);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   3. Typography & Utility Components
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
}

.highlight-cyan {
    color: var(--primary);
    background: linear-gradient(90deg, var(--primary) 0%, hsl(175, 100%, 45%) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius-sm);
    padding: 12px 28px;
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: hsl(220, 30%, 8%);
    box-shadow: 0 4px 14px 0 var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 20px 0 var(--primary-glow);
    transform: translateY(-2px);
}

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

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

.btn-outline-cyan {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline-cyan:hover {
    background: var(--primary-glow);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
    border-radius: var(--border-radius-md);
}

.btn-block {
    width: 100%;
}

/* Badges */
.badge-glow {
    display: inline-block;
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid rgba(0, 180, 216, 0.4);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

/* Section Common Structure */
section {
    padding: 100px 0;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 60px;
    max-width: 700px;
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.section-underline {
    height: 4px;
    width: 60px;
    background-color: var(--primary);
    border-radius: 2px;
    margin-bottom: 20px;
}

.section-header.text-center .section-underline {
    margin-left: auto;
    margin-right: auto;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   4. Header & Top Bar Layouts
   ========================================================================== */
.top-bar {
    height: var(--top-bar-height);
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: background-color var(--transition-normal);
}

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

.top-contact-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.contact-divider {
    color: var(--border-color);
}

.top-location {
    display: flex;
    align-items: center;
    gap: 6px;
}

.icon {
    flex-shrink: 0;
    color: var(--primary);
}

/* Floating Sticky Main Header */
.main-header {
    height: var(--header-height);
    background-color: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-circle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, hsl(175, 100%, 45%) 100%);
    color: hsl(220, 30%, 8%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-brand {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    line-height: 1.1;
    color: var(--text-primary);
}

.logo-tagline {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
}

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

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--secondary-hover);
}

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

/* Mobile Menu Hamburger */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* ==========================================================================
   5. Hero Section Styling
   ========================================================================== */
.hero-section {
    background-image: url('assets/cold_storage_room.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    padding: 120px 0 100px 0;
    min-height: calc(100vh - var(--header-height) - var(--top-bar-height));
    display: flex;
    align-items: center;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--hero-overlay);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
}

.hero-content {
    max-width: 750px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.5;
}

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

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 20px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 180, 216, 0.12);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-num {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.stat-label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ==========================================================================
   6. Solutions Section & Dynamic Tabs
   ========================================================================== */
.solutions-section {
    background-color: var(--bg-base);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 48px;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 16px 24px;
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

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

.tab-icon {
    color: inherit;
}

.tab-panel {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-slow) ease-in-out;
}

.tab-panel.active {
    display: block;
    opacity: 1;
}

.solutions-overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.solution-card-summary {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.solution-card-summary:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(0, 180, 216, 0.15);
}

.solution-card-image-wrapper {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

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

.solution-card-summary:hover .solution-card-img {
    transform: scale(1.08);
}

.solution-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.solution-card-body h3 {
    font-size: 1.35rem;
    margin: 8px 0 12px 0;
    color: var(--text-primary);
}

.solution-card-body p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Tab Solutions Content Grid */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    align-items: center;
}

.solution-image-container {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 16/10;
}

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

.solution-image-container:hover .solution-image {
    transform: scale(1.05);
}

.image-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.4) 0%, transparent 100%);
    pointer-events: none;
}

.solution-info {
    padding-left: 20px;
}

.solution-tag {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: inline-block;
}

.solution-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.solution-info p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 30px;
}

.solution-specs {
    margin-bottom: 36px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.solution-specs li {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-surface-alt);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary);
    padding: 12px 18px;
    border-radius: var(--border-radius-sm);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.solution-specs li:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.solution-specs strong {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--primary);
    margin-bottom: 6px;
}

.solution-specs span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

/* ==========================================================================
   7. Sizing & PUF Panel Calculator
   ========================================================================== */
.calculator-section {
    background-color: var(--bg-surface-alt);
    transition: background-color var(--transition-normal);
}

.calc-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.calc-form {
    padding: 40px;
    border-right: 1px solid var(--border-color);
}

.calc-sidebar-right {
    display: flex;
    flex-direction: column;
    background-color: rgba(0, 180, 216, var(--accent-glow-opacity));
}

.calc-visualizer {
    padding: 32px 40px 16px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.visualizer-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    margin-bottom: 12px;
    text-align: center;
}

.scene3d {
    width: 260px;
    height: 110px;
    perspective: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 8px 0;
}

.cube3d {
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(-16deg) rotateY(38deg);
    transition: transform var(--transition-normal);
}

.face {
    position: absolute;
    border: 1.5px solid var(--primary);
    background-color: rgba(0, 180, 216, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.face::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(0, 180, 216, 0.1) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0, 180, 216, 0.1) 1px, transparent 1px);
    background-size: 12px 12px;
}

.visualizer-dimensions {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 12px;
    background-color: var(--primary-glow);
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.calc-results {
    padding: 32px 40px 40px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-grow: 1;
}

.calc-box-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    position: relative;
}

.calc-box-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary);
}

.form-group-slider {
    margin-bottom: 32px;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.slider-value-badge {
    background: var(--secondary);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 700;
    border: 1px solid var(--border-color);
}

.custom-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary-glow);
    transition: transform 0.1s;
}

.custom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.form-label-title {
    display: block;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.radio-card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.radio-card {
    cursor: pointer;
}

.radio-card input[type="radio"] {
    display: none;
}

.radio-card-content {
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--border-radius-md);
    background: var(--input-bg);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.radio-card input[type="radio"]:checked + .radio-card-content {
    border-color: var(--primary);
    background: rgba(0, 180, 216, 0.08);
}

.radio-title {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.radio-temp {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.radio-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Calculator Results Column */
.result-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.result-item {
    display: flex;
    flex-direction: column;
}

.result-item:first-child {
    border-right: 1px solid var(--border-color);
    padding-right: 24px;
}

.result-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.3;
}

.result-main {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 8px;
}

.result-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.result-unit {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary);
}

.result-detail-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.result-divider {
    display: none;
}

.calc-cta-box {
    margin-top: 36px;
}

.cta-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .result-box {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .result-item:first-child {
        border-right: none;
        padding-right: 0;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 16px;
    }
}

/* ==========================================================================
   8. Technical Specifications & Infrastructure
   ========================================================================== */
.infra-section {
    background-color: var(--bg-base);
}

.infra-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.infra-card {
    background: var(--card-gradient);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.infra-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    background-color: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.infra-card h4 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.infra-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   9. About Us Section
   ========================================================================== */
.about-section {
    background-color: var(--bg-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.about-content h2 {
    font-size: 2.2rem;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.feat-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feat-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--accent);
    color: hsl(220, 30%, 8%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.feat-item h5 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.feat-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

.about-info-panel {
    background-color: var(--bg-surface-alt);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.info-title {
    font-size: 1.4rem;
    margin-bottom: 32px;
    position: relative;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.info-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary);
}

.info-card-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-detail-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.info-card-num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    opacity: 0.6;
}

.info-detail-card h6 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.info-detail-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ==========================================================================
   10. Contact Us & Quote Form Section
   ========================================================================== */
.contact-section {
    background-color: var(--bg-base);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
}

.contact-form-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 48px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.col-6 {
    width: 50%;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.form-control {
    font-family: var(--font-sans);
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    outline: none;
}

textarea.form-control {
    resize: vertical;
}

/* Form Feedback States */
.form-feedback {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 10px;
}

.form-feedback.success {
    background-color: rgba(150, 70, 45, 0.1);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.form-feedback.error {
    background-color: rgba(220, 50, 50, 0.1);
    color: hsl(0, 80%, 60%);
    border: 1px solid hsl(0, 80%, 60%);
}

.hidden {
    display: none;
}

/* Contact Info Column */
.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 40px;
    justify-content: center;
}

.info-section {
    display: flex;
    flex-direction: column;
}

.contact-info-title {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.contact-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon-box {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
    background-color: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-card-text {
    font-size: 1.05rem;
}

.contact-card-text strong {
    font-size: 1.15rem;
    display: block;
    margin-bottom: 6px;
}

.contact-card-text p {
    color: var(--text-secondary);
    line-height: 1.5;
}

.contact-link:hover {
    color: var(--primary);
}

/* ==========================================================================
   11. Footer Styling
   ========================================================================== */
.footer {
    background-color: var(--bg-surface-alt);
    color: var(--text-secondary);
    padding: 80px 0 0 0;
    margin-top: auto;
    margin-bottom: 0 !important;
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 32px;
}

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

.footer-logo-container {
    margin-bottom: 5px;
}

.footer-brand-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-wa-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-wa-link:hover {
    color: var(--primary-hover);
    transform: translateX(4px);
}

.footer-socials {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--border-color);
    color: var(--text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.social-icon:hover {
    background-color: var(--primary);
    color: var(--bg-surface-alt);
    transform: translateY(-2px);
}

.footer-links-box {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 0;
}

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

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-contact-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    list-style: none;
}

.footer-contact-details li {
    line-height: 1.5;
}

.footer-contact-details a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-contact-details a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 16px 0;
    margin-bottom: 0 !important;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.credit-link {
    color: var(--primary);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.credit-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* ==========================================================================
   11.5 Clients & Captcha Styling
   ========================================================================== */
.markets-section {
    background-color: var(--bg-base);
    transition: background-color var(--transition-normal);
}

.markets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.market-card {
    background: var(--card-gradient);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.market-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 6px 18px var(--primary-glow);
}

.market-icon-wrapper {
    background: var(--primary-glow);
    color: var(--primary);
    width: 46px;
    height: 46px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.market-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: left;
}

.market-info h5 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.market-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}


/* Captcha Styling */
.captcha-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

#captchaCanvas {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    height: 42px;
    width: 130px;
    flex-shrink: 0;
}

#refreshCaptchaBtn {
    height: 42px;
    width: 42px;
    padding: 0;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
}

#refreshCaptchaBtn:hover {
    background-color: var(--secondary-hover);
}

#captchaInput {
    height: 42px;
    flex-grow: 1;
    min-width: 120px;
}

/* Esteemed Customers list grid */
.customers-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin: 60px 0 32px 0;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 12px;
}

.customers-section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 2px;
}

.clients-section {
    background-color: var(--bg-surface-alt);
    transition: background-color var(--transition-normal);
}

.client-marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 10px 0;
}

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

.client-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-surface-alt) 0%, transparent 100%);
}

.client-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-surface-alt) 0%, transparent 100%);
}

.client-marquee-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
}

.client-ticker-track {
    display: flex;
    gap: 16px;
    width: max-content;
    animation-play-state: running;
}

.client-marquee-container:hover .client-ticker-track {
    animation-play-state: paused;
}

.track-ltr {
    animation: client-scroll-ltr 45s linear infinite;
}

.track-rtl {
    animation: client-scroll-rtl 45s linear infinite;
}

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

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

.client-ticker-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 50px;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.client-ticker-item:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.client-ticker-sector {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    background-color: var(--primary-glow);
    padding: 3px 10px;
    border-radius: 20px;
}

.client-ticker-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.client-ticker-loc {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
    border-left: 1px solid var(--border-color);
    padding-left: 8px;
}

/* Testimonials Styling */
.testimonials-section {
    background-color: var(--bg-surface);
}

.testimonials-marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 24px 0;
}

.testimonials-marquee-track {
    display: flex;
    gap: 24px;
    width: max-content;
    animation: marquee-scroll 32s linear infinite;
}

.testimonials-marquee-container:hover .testimonials-marquee-track {
    animation-play-state: paused;
}

.testimonial-card {
    background: var(--bg-surface-alt);
    border: 1px solid var(--border-color);
    padding: 36px 30px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    width: 320px;
    flex-shrink: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 380px;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.stars {
    color: #ffb703;
    font-size: 1.2rem;
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
    gap: 4px;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.testimonial-author strong {
    display: block;
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.testimonial-author span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

@keyframes marquee-scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        /* 4 unique cards. Each is 320px width + 24px gap = 344px.
           We translate by -344px * 4 = -1376px to loop seamlessly. */
        transform: translateX(-1376px);
    }
}

/* ==========================================================================
   12. Responsive Design (Mobile / Tablet Media Queries)
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .solutions-overview-grid,
    .solution-grid,
    .calc-wrapper,
    .infra-grid,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .markets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .calc-form {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 32px;
    }
    
    .calc-visualizer {
        padding: 32px 32px 16px 32px;
    }
    
    .calc-results {
        padding: 16px 32px 32px 32px;
    }
    
    .solution-info {
        padding-left: 0;
    }
    
    .solution-specs {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .top-bar {
        display: none; /* Hide topbar on mobile to conserve viewport */
    }
    
    .menu-toggle {
        display: flex;
        z-index: 101;
    }

    .logo-img {
        max-height: 44px; /* Reduced from 68px for mobile header scaling */
    }
    
    /* Mobile Menu Drawer style */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-surface);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 100px 40px;
        gap: 24px;
        z-index: 100;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border-color);
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    /* Toggle Hamburger Animation */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    @media (max-width: 576px) {
        .header-actions .btn {
            display: none;
        }
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-form-container {
        padding: 30px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 20px;
    }
    
    .form-group.col-6 {
        width: 100%;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .markets-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Logo image sizing & visibility enhancement */
.logo-img {
    max-height: 68px;
    width: auto;
    object-fit: contain;
    display: block;
    transition: transform var(--transition-normal), filter var(--transition-normal);
}

.logo-img-footer {
    max-height: 52px;
    width: auto;
    object-fit: contain;
    display: block;
    transition: transform var(--transition-normal), filter var(--transition-normal);
}

/* Light/Dark mode specific logo glow and contrast adjustments */
[data-theme="dark"] .logo-img,
[data-theme="dark"] .logo-img-footer {
    filter: drop-shadow(0 2px 10px rgba(0, 180, 216, 0.15)) drop-shadow(0 0 2px rgba(255, 255, 255, 0.25));
}

[data-theme="light"] .logo-img,
[data-theme="light"] .logo-img-footer {
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.logo-img:hover,
.logo-img-footer:hover {
    transform: scale(1.02);
}

/* Floating WhatsApp Button styling */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: white;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    text-decoration: none;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
    color: white;
}

.whatsapp-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-normal);
}

.whatsapp-float:hover .whatsapp-icon {
    transform: rotate(12deg);
}

.whatsapp-pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50px;
    background-color: #25d366;
    opacity: 0.4;
    z-index: -1;
    animation: wa-pulse 2s infinite;
}

@keyframes wa-pulse {
    0% {
        transform: scale(1);
        opacity: 0.4;
    }
    100% {
        transform: scale(1.2, 1.4);
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        padding: 10px 16px;
        font-size: 0.85rem;
    }
    .whatsapp-icon {
        width: 16px;
        height: 16px;
    }
}

/* ==========================================================================
   Sub-Pages Styles (B2B Multi-Page Enhancements)
   ========================================================================== */
.subpage-hero {
    position: relative;
    padding: 120px 0 80px 0;
    background-color: var(--bg-surface-alt);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.subpage-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.subpage-hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 2;
}

.subpage-title {
    font-size: 3rem;
    font-weight: 800;
    margin: 16px 0;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.subpage-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 800px;
    line-height: 1.6;
}

.subpage-content-section {
    padding: 80px 0;
    background-color: var(--bg-base);
}

.spec-table-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-surface);
    box-shadow: var(--shadow-sm);
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.spec-table th, .spec-table td {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
}

.spec-table th {
    background-color: var(--bg-surface-alt);
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.spec-table tr:last-child td {
    border-bottom: none;
}

.spec-table tr:hover td {
    background-color: rgba(0, 180, 216, 0.02);
}

@media (max-width: 768px) {
    .subpage-title {
        font-size: 2.2rem;
    }
    .subpage-hero {
        padding: 100px 0 60px 0;
    }
}

/* ==========================================================================
   Promotional Announcement Popup Modal
   ========================================================================== */
.promo-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 15, 24, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.promo-popup-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.promo-popup-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 480px;
    padding: 32px;
    box-shadow: 0 20px 50px rgba(0, 180, 216, 0.25);
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    overflow: hidden;
}

.promo-popup-overlay.show .promo-popup-card {
    transform: translateY(0) scale(1);
}

.promo-popup-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.promo-popup-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

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

.promo-popup-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 180, 216, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin: 0 auto 20px auto;
}

.promo-popup-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.promo-popup-text {
    font-size: 0.98rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.promo-popup-btn {
    width: 100%;
}

.promo-slides-container {
    position: relative;
    min-height: 140px;
    margin-bottom: 20px;
}

.promo-slide {
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.promo-slide.active {
    position: relative;
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

/* ==========================================================================
   Gated Brochure Download Modal
   ========================================================================== */
.gated-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 15, 24, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

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

.gated-modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 440px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.gated-modal-overlay.show .gated-modal-card {
    transform: scale(1);
}

.gated-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

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

.gated-modal-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    text-align: center;
}

.gated-modal-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-align: center;
}

/* ==========================================================================
   B2B FAQ Accordion Section
   ========================================================================== */
.faq-item {
    transition: border-color var(--transition-normal), background-color var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--primary) !important;
    background-color: rgba(255, 255, 255, 0.02) !important;
}

.faq-item[open] {
    border-color: var(--primary) !important;
    background-color: rgba(0, 180, 216, 0.03) !important;
}

.faq-item[open] .faq-icon {
    transform: rotate(45deg);
    color: #ff4a5a !important;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

/* ==========================================================================
   Intellectual Property Protection
   ========================================================================== */
body:not(.admin-body) {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
input, textarea, select {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* ==========================================================================
   Festival Wishes Popup Modal Styling
   ========================================================================== */
.festival-popup-card {
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 12px;
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}

.promo-popup-overlay.show .festival-popup-card {
    transform: translateY(0) scale(1);
}

.festival-media-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 8px;
}

.festival-media-container img,
.festival-media-container video {
    max-width: 100%;
    max-height: 75vh;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}