/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-900: #1e3a8a;
    
    --secondary-50: #ecfeff;
    --secondary-500: #06b6d4;
    --secondary-600: #0891b2;
    --secondary-700: #0e7490;
    
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
    
    /* Spacing System (8px base) */
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 2.5rem;
    --space-6: 3rem;
    --space-8: 4rem;
    --space-10: 5rem;
    --space-12: 6rem;
    
    /* Typography */
    --font-heading: 'Poppins', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.2;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 1.75;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--line-height-relaxed);
    color: var(--neutral-700);
    background-color: var(--neutral-50);
    overflow-x: hidden;
    font-weight: var(--font-weight-normal);
}

/* Global Heading Styles */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--neutral-900);
    margin-bottom: var(--space-3);
}

h1 {
    font-size: var(--text-6xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
}

h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-snug);
}

h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
}

p {
    font-family: var(--font-body);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Navigation Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--neutral-200);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 130px;
}

.nav-logo h2 {
    font-family: var(--font-heading);
    color: var(--primary-600);
    font-weight: var(--font-weight-extrabold);
    font-size: var(--text-3xl);
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-6);
}

.nav-link {
    text-decoration: none;
    color: var(--neutral-600);
    font-weight: var(--font-weight-medium);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-600);
    transition: var(--transition-normal);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--neutral-600);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 150px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
    letter-spacing: -0.05em;
    opacity: 0;
    animation: slideInUp 0.8s ease-out forwards;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    color: var(--primary-600);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
    margin-bottom: var(--space-3);
    letter-spacing: -0.025em;
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.2s forwards;
}

.hero-description {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--neutral-600);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
    margin-bottom: var(--space-6);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.4s forwards;
}

.hero-buttons {
    display: flex;
    gap: var(--space-3);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.6s forwards;
}

.btn {
    font-family: var(--font-heading);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-base);
    letter-spacing: 0.025em;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-primary {
    background-color: var(--primary-600);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: white;
    color: var(--primary-600);
    border: 2px solid var(--primary-600);
}

.btn-secondary:hover {
    background-color: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-400));
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 120px;
    height: 120px;
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.shape-2 {
    width: 80px;
    height: 80px;
    top: 60%;
    right: 30%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

/* About Section */
.about {
    padding: var(--space-12) 0;
    background-color: white;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: var(--font-weight-extrabold);
    color: var(--neutral-900);
    line-height: var(--line-height-tight);
    letter-spacing: -0.04em;
    margin-bottom: var(--space-3);
}

.section-header p {
    font-family: var(--font-body);
    font-size: var(--text-xl);
    color: var(--neutral-600);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.about-card {
    background: var(--neutral-50);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--neutral-200);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.card-icon {
    margin-bottom: var(--space-4);
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 2rem;
}

.about-card h3 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--neutral-900);
    line-height: var(--line-height-snug);
    letter-spacing: -0.025em;
    margin-bottom: var(--space-3);
}

.about-card p {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--neutral-600);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
}

/* Subsidiaries Section */
.subsidiaries {
    padding: var(--space-12) 0;
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--primary-50) 100%);
}

.subsidiaries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-6);
}

.subsidiary-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--neutral-200);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.subsidiary-card:nth-child(1) { animation-delay: 0.1s; }
.subsidiary-card:nth-child(2) { animation-delay: 0.3s; }
.subsidiary-card:nth-child(3) { animation-delay: 0.5s; }

.subsidiary-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-300);
}

.card-header {
    text-align: center;
    margin-bottom: var(--space-5);
}

.company-logo {
    width: 150px;
    height: 80px;
    /* border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600)); */
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-3);
}

.company-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: white;
}

.card-header h3 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--neutral-900);
    line-height: var(--line-height-snug);
    letter-spacing: -0.025em;
    margin-bottom: var(--space-2);
}

.company-tag {
    font-family: var(--font-body);
    background-color: var(--accent-100);
    color: var(--accent-700);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.card-content {
    margin-bottom: var(--space-5);
}

.card-content p {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--neutral-600);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
}

.features-list {
    list-style: none;
    margin-bottom: var(--space-4);
}

.features-list li {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--neutral-600);
    margin-bottom: var(--space-2);
    position: relative;
    padding-left: var(--space-4);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-500);
    font-weight: var(--font-weight-bold);
}

.card-footer {
    border-top: 1px solid var(--neutral-200);
    padding-top: var(--space-4);
}

.company-link {
    font-family: var(--font-heading);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--primary-600);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-base);
    letter-spacing: 0.025em;
    transition: var(--transition-fast);
}

.company-link:hover {
    color: var(--primary-700);
    gap: var(--space-3);
}

.link-arrow {
    transition: var(--transition-fast);
}

.company-link:hover .link-arrow {
    transform: translateX(4px);
}

/* Contact Section */
.contact {
    padding: var(--space-12) 0;
    background-color: var(--neutral-900);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: start;
}

.contact-info h2 {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.04em;
    margin-bottom: var(--space-4);
    color: white;
}

.contact-info p {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--neutral-300);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.contact-icon {
    font-size: 1.5rem;
    margin-top: var(--space-1);
}

.contact-item strong {
    font-family: var(--font-heading);
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--text-base);
    display: block;
    margin-bottom: var(--space-1);
}

.contact-item p {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--neutral-400);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* Contact Form */
.contact-form {
    background: var(--neutral-800);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-700);
}

.form-group {
    margin-bottom: var(--space-4);
}

.form-group input,
.form-group textarea {
    font-family: var(--font-body);
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--neutral-600);
    border-radius: var(--radius-md);
    background-color: var(--neutral-700);
    color: white;
    font-size: var(--text-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--neutral-400);
    font-weight: var(--font-weight-normal);
}

/* Footer */
.footer {
    background-color: var(--neutral-900);
    padding: var(--space-8) 0 var(--space-4);
    border-top: 1px solid var(--neutral-800);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer-section h3,
.footer-section h4 {
    font-family: var(--font-heading);
    color: white;
    margin-bottom: var(--space-3);
    font-weight: var(--font-weight-bold);
    font-size: var(--text-lg);
    letter-spacing: -0.025em;
}

.footer-section p {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--neutral-400);
    line-height: var(--line-height-relaxed);
    font-weight: var(--font-weight-normal);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--neutral-800);
}

.footer-bottom p {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--neutral-500);
    font-weight: var(--font-weight-normal);
    margin: 0;
}

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Responsive Design */

/* Tablet Styles (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-6);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .subsidiaries-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

/* Mobile Styles (max-width: 768px) */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--space-4) 0;
        border-top: 1px solid var(--neutral-200);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero {
        min-height: 90vh;
    }

    .hero-title {
        font-size: clamp(var(--text-3xl), 8vw, var(--text-4xl));
    }

    .hero-subtitle {
        font-size: var(--text-xl);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-visual {
        height: 250px;
    }

    .subsidiaries-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .container {
        padding: 0 var(--space-3);
    }

    .section-header h2 {
        font-size: clamp(var(--text-2xl), 6vw, var(--text-3xl));
    }

    .about-card,
    .subsidiary-card {
        padding: var(--space-2);
    }
}

/* Small Mobile Styles (max-width: 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(var(--text-2xl), 7vw, var(--text-3xl));
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .hero-description {
        font-size: var(--text-base);
    }

    .btn {
        padding: var(--space-2) var(--space-4);
        font-size: 0.875rem;
    }

    .subsidiaries-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .subsidiary-card {
        padding: var(--space-2);
        margin: 0 var(--space-1);
    }

    .section-header h2 {
        font-size: clamp(var(--text-xl), 5vw, var(--text-2xl));
    }

    .contact-info h2 {
        font-size: clamp(var(--text-2xl), 6vw, var(--text-3xl));
    }
}

/* Scroll Animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Focus States for Accessibility */
.btn:focus,
.nav-link:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* High Contrast Support */
@media (prefers-contrast: high) {
    .shape {
        opacity: 0.3;
    }
    
    .about-card,
    .subsidiary-card {
        border-width: 2px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}