/* -------------------------------------------------------------
 * PT NUSANTARA GAS INTERNASIONAL - STYLE.CSS
 * Premium Responsive & Bilingual Design (English & Arabic)
 * ------------------------------------------------------------- */

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

/* --- Theme Tokens & CSS Custom Properties --- */
:root {
    /* Color Palette */
    --bg-dark: #070b19;
    --bg-darker: #04060f;
    --bg-card: rgba(16, 24, 48, 0.45);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-glow: rgba(0, 180, 216, 0.2);

    --primary-cyan: #00b4d8;
    --primary-cyan-rgb: 0, 180, 216;
    --primary-glow: rgba(0, 180, 216, 0.15);
    
    --secondary-indigo: #4361ee;
    --accent-gold: #d4af37;
    --accent-gold-rgb: 212, 175, 55;
    --accent-gold-glow: rgba(212, 175, 55, 0.15);

    /* Text Colors */
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;

    /* Gradients */
    --grad-cyan-indigo: linear-gradient(135deg, var(--primary-cyan) 0%, var(--secondary-indigo) 100%);
    --grad-cyan-gold: linear-gradient(135deg, var(--primary-cyan) 0%, var(--accent-gold) 100%);
    --grad-dark-glow: radial-gradient(circle at 50% 50%, rgba(67, 97, 238, 0.05) 0%, transparent 80%);

    /* Fonts */
    --font-header: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Utilities */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.25);
    --shadow-glow-gold: 0 0 30px rgba(212, 175, 55, 0.15);
}

/* --- Dynamic Direction Font Overrides --- */
html[lang="ar"],
html[dir="rtl"] {
    --font-header: 'Cairo', sans-serif;
    --font-body: 'Cairo', sans-serif;
}

/* --- Reset & Base Styles --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-darker);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: var(--grad-dark-glow);
    background-attachment: fixed;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-cyan);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-header);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.25;
}

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

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

/* --- Grid & Layout Systems --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.section {
    padding-block: 6rem 4rem;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 700px;
    margin-inline: auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

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

/* --- Premium Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    font-family: var(--font-header);
    font-weight: 600;
    border-radius: 30px;
    transition: var(--transition-smooth);
    cursor: pointer;
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--grad-cyan-indigo);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: var(--primary-cyan);
}

/* --- Glassmorphic Layout Components --- */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 60%);
    pointer-events: none;
}

.glass-card:hover {
    border-color: var(--border-glass-glow);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--primary-glow);
}

/* --- Header & Navigation --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition-smooth);
    padding-block: 1.5rem;
}

.header.scrolled {
    background: rgba(4, 6, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding-block: 0.8rem;
}

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

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

.logo-img {
    height: 42px;
    width: auto;
}

.logo-text {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.3rem;
    background: linear-gradient(135deg, #fff 40%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-tagline {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding-block: 0.5rem;
}

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

html[dir="rtl"] .nav-link::after {
    left: auto;
    right: 0;
}

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

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

.right-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Language Toggle Button */
.lang-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 2px;
    overflow: hidden;
    list-style: none;
}

.lang-btn {
    padding: 0.4rem 0.9rem;
    border-radius: 18px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.lang-btn.active {
    background: var(--primary-cyan);
    color: #fff;
    box-shadow: 0 2px 10px rgba(0, 180, 216, 0.3);
}

/* Mobile Menu Icon */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 5px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

html[dir="rtl"] .hero::after {
    right: auto;
    left: -10%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 20px;
    color: var(--primary-cyan);
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 50%, var(--primary-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 550px;
}

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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img-container {
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 50px rgba(67, 97, 238, 0.1);
    animation: float 6s ease-in-out infinite;
}

.hero-img {
    width: 100%;
    transform: scale(1.02);
}

/* --- About & Greeting Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-visual-box {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(0, 180, 216, 0.05);
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-visual-box:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--primary-glow);
}

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

.greeting-box {
    border-inline-start: 4px solid var(--accent-gold);
    padding-inline-start: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.greeting-quote {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.5;
    font-weight: 500;
}

.greeting-author {
    margin-top: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-gold);
}

.about-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.about-bullets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.bullet-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.bullet-icon {
    color: var(--primary-cyan);
    margin-top: 0.2rem;
    font-size: 1.1rem;
}

.bullet-text h4 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

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

/* --- Vision & Mission Section --- */
.vision-mision {
    background: radial-gradient(circle at 10% 30%, rgba(67, 97, 238, 0.05) 0%, transparent 50%);
}

.vision-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: center;
    margin-bottom: 4rem;
}

.vision-card {
    border: 1px solid rgba(212, 175, 55, 0.25);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--accent-gold-glow);
    margin-bottom: 0;
}

.vision-visual-box {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(212, 175, 55, 0.1);
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.vision-visual-box:hover {
    border-color: var(--accent-gold);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--accent-gold-glow);
}

.vision-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.vision-title {
    color: var(--accent-gold);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    font-weight: 700;
}

.vision-text {
    font-size: 1.8rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.mission-card {
    padding: 2rem;
}

.mission-num {
    font-size: 2.5rem;
    font-family: var(--font-header);
    font-weight: 800;
    background: var(--grad-cyan-indigo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    display: block;
}

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

.mission-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Business Fields & Services --- */
.services-tabs-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.tab-btn {
    padding: 0.8rem 2.5rem;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-family: var(--font-header);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tab-btn.active {
    background: var(--grad-cyan-indigo);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.services-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: flex-start;
    margin-bottom: 4rem;
}

.services-visual-box {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(0, 180, 216, 0.1);
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.services-visual-box:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--primary-glow);
}

.services-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.service-card {
    padding: 2.2rem;
}

.service-icon-box {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 180, 216, 0.2);
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon-box {
    background: var(--primary-cyan);
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 180, 216, 0.4);
    transform: scale(1.05);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.8rem;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Value Chain & Infrastructure Section --- */
.infra-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.infra-bullets {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.infra-bullet {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.infra-bullet i {
    color: var(--accent-gold);
    font-size: 1.2rem;
}

.value-chain-section {
    padding-block: 4rem;
    border-top: 1px solid var(--border-glass);
    position: relative;
}

.chain-title {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 3rem;
}

.chain-flow {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1rem;
    position: relative;
}

/* Arrow indicator on PC */
.chain-node {
    text-align: center;
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    transition: var(--transition-smooth);
    position: relative;
}

.chain-node:hover {
    border-color: var(--primary-cyan);
    background: rgba(0, 180, 216, 0.05);
}

.chain-node.gold-edge {
    border-color: rgba(212, 175, 55, 0.3);
}

.chain-node.gold-edge:hover {
    border-color: var(--accent-gold);
    background: rgba(212, 175, 55, 0.05);
}

.chain-icon {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    color: var(--primary-cyan);
}

.chain-node.gold-edge .chain-icon {
    color: var(--accent-gold);
}

.chain-node h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Horizontal Connector lines between chain-nodes */
.chain-node::after {
    content: '\f105';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    right: -0.75rem;
    transform: translateY(-50%);
    color: var(--border-glass);
    font-size: 1.2rem;
    pointer-events: none;
    z-index: 10;
}

html[dir="rtl"] .chain-node::after {
    content: '\f104';
    right: auto;
    left: -0.75rem;
}

.chain-node:last-child::after {
    display: none;
}

/* --- ESG, HSE & GCG --- */
.esg-container {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 4.5rem;
    align-items: center;
}

.esg-visual-box {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(0, 180, 216, 0.1);
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.esg-visual-box:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--primary-glow);
}

.esg-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.esg-vertical-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.esg-card {
    padding: 2rem 2.5rem;
}

.esg-icon {
    font-size: 2.2rem;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.esg-card.primary-theme .esg-icon {
    color: var(--primary-cyan);
}

.esg-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.esg-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Strategic Roadmap & Development Pillars --- */
.roadmap-content-wrapper {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.roadmap-visual-box {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(212, 175, 55, 0.1);
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.roadmap-visual-box:hover {
    border-color: var(--accent-gold);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--accent-gold-glow);
}

.roadmap-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Vertical Timeline */
.roadmap-timeline-vertical {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    padding-inline-start: 1rem;
}

.roadmap-timeline-vertical::before {
    content: '';
    position: absolute;
    top: 1rem;
    bottom: 1rem;
    left: 22px; /* Centers in the dot */
    width: 2px;
    background: rgba(255, 255, 255, 0.05);
}

html[dir="rtl"] .roadmap-timeline-vertical::before {
    left: auto;
    right: 22px;
}

.roadmap-step-vertical {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    position: relative;
}

.roadmap-step-vertical .roadmap-dot {
    margin: 0;
    flex-shrink: 0;
    z-index: 2;
}

.roadmap-step-vertical-content {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 1.25rem 1.75rem;
    flex-grow: 1;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.roadmap-step-vertical.active .roadmap-step-vertical-content {
    border-color: rgba(212, 175, 55, 0.25);
    box-shadow: var(--accent-gold-glow);
}

.roadmap-step-vertical:hover .roadmap-step-vertical-content {
    border-color: var(--primary-cyan);
    box-shadow: var(--primary-glow);
}

.roadmap-step-vertical-content h4 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}

.roadmap-step-vertical-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    top: 2.2rem;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.05);
    z-index: 1;
}

.roadmap-step {
    position: relative;
    z-index: 2;
    text-align: center;
}

.roadmap-dot {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 2px solid var(--border-glass);
    color: var(--text-secondary);
    font-family: var(--font-header);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-inline: auto;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.roadmap-step.active .roadmap-dot {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    box-shadow: var(--shadow-glow-gold);
}

.roadmap-step:hover .roadmap-dot {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
    box-shadow: var(--shadow-glow);
}

.roadmap-step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.roadmap-step p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-inline: 1rem;
}

/* Development Pillars */
.pillars-title {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 3.5rem;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.25rem;
}

.pillar-node {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    transition: var(--transition-smooth);
}

.pillar-node:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-5px);
    box-shadow: var(--shadow-premium), var(--primary-glow);
}

.pillar-icon {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--primary-cyan);
}

.pillar-node h4 {
    font-size: 0.9rem;
    font-weight: 600;
}

/* --- Competitive Advantages --- */
.advantages-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-inline: auto;
    max-width: 900px;
}

.advantage-node {
    flex: 1 1 250px;
    max-width: 280px;
    text-align: center;
    padding: 2.2rem;
}

.adv-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.1);
    color: var(--accent-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-inline: auto;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(212, 175, 55, 0.2);
    transition: var(--transition-smooth);
}

.advantage-node:hover .adv-icon {
    background: var(--accent-gold);
    color: #000;
    box-shadow: var(--shadow-glow-gold);
}

.advantage-node h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
}

/* --- Contact & Footer --- */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: stretch;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-visual-card {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-premium), 0 0 30px rgba(0, 180, 216, 0.05);
    margin-bottom: 2rem;
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-visual-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), var(--primary-glow);
}

.contact-img-visual {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-block: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0, 180, 216, 0.1);
    color: var(--primary-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    border: 1px solid rgba(0, 180, 216, 0.2);
}

.contact-text h4 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-socials {
    display: flex;
    gap: 1rem;
}

.social-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.social-btn:hover {
    color: var(--primary-cyan);
    border-color: var(--primary-cyan);
    background: rgba(0, 180, 216, 0.05);
    transform: translateY(-2px);
}

.contact-form-box {
    padding: 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-family: var(--font-header);
}

.form-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-cyan);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 15px rgba(0, 180, 216, 0.1);
}

textarea.form-control {
    resize: none;
    height: 120px;
}

/* Dynamic form status styling */
.form-feedback {
    display: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    border: 1px solid transparent;
}

.form-feedback.success {
    display: block;
    background: rgba(46, 117, 89, 0.15);
    border-color: rgba(46, 117, 89, 0.3);
    color: #52b788;
}

.form-feedback.error {
    display: block;
    background: rgba(214, 40, 40, 0.15);
    border-color: rgba(214, 40, 40, 0.3);
    color: #e63946;
}

/* Footer bottom */
.footer {
    padding-block: 3rem;
    background: var(--bg-darker);
    border-top: 1px solid var(--border-glass);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

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

/* --- Reveal Scroll Animation classes --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* --- Keyframe Animations --- */
@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(0.5deg);
    }
    100% {
        transform: translateY(0px) rotate(0deg);
    }
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }
    .about-grid, .infra-content, .contact-grid, .vision-container, .services-container, .roadmap-content-wrapper, .esg-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .mission-grid, .services-grid, .esg-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .roadmap-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem 2rem;
    }
    .roadmap-timeline::before {
        display: none;
    }
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .chain-flow {
        grid-template-columns: repeat(4, 1fr);
    }
    .chain-node::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .section {
        padding-block: 4rem 2rem;
    }
    .section-title {
        font-size: 2rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        inset-inline-end: -100%;
        width: 75%;
        height: 100vh;
        background: var(--bg-darker);
        border-inline-start: 1px solid var(--border-glass);
        flex-direction: column;
        padding: 8rem 2.5rem 3rem 2.5rem;
        gap: 2.5rem;
        align-items: flex-start;
        transition: var(--transition-smooth);
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    /* Open Menu state */
    .nav-menu.active {
        inset-inline-end: 0;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
    }
    
    .hero-tagline {
        margin-inline: auto;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .mission-grid, .services-grid, .esg-grid, .pillars-grid, .chain-flow {
        grid-template-columns: 1fr;
    }

    .about-bullets {
        grid-template-columns: 1fr;
    }
    
    .contact-form-box {
        padding: 2rem;
    }
}