/* css/style.css */
:root {
    /* Color Palette - Dark Theme (Default) */
    --bg-main: #0B0E14;
    --bg-surface: #151A22;
    --bg-surface-hover: #1E2530;
    --bg-light: #12161E;
    
    --text-primary: #FFFFFF;
    --text-secondary: #A0ABC0;
    --text-muted: #6B7B93;
    
    --accent-primary: #D4AF37; /* Premium Gold */
    --accent-hover: #B5952F;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(212, 175, 55, 0.5);
    
    --header-bg: rgba(11, 14, 20, 0.85);
    
    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Layout & Utilities */
    --max-width: 1200px;
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.2);
    --shadow-accent: 0 0 20px rgba(212, 175, 55, 0.15);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-main: #F8F9FA;
    --bg-surface: #FFFFFF;
    --bg-surface-hover: #F1F3F5;
    --bg-light: #E9ECEF;
    
    --text-primary: #1A1D20;
    --text-secondary: #495057;
    --text-muted: #868E96;
    
    --accent-primary: #0056B3; /* Corporate Blue */
    --accent-hover: #004494;
    
    --border-color: rgba(0, 0, 0, 0.1);
    --border-focus: rgba(0, 86, 179, 0.3);
    
    --header-bg: rgba(248, 249, 250, 0.85);
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 15px 35px rgba(0,0,0,0.07);
    --shadow-accent: 0 8px 25px rgba(0, 86, 179, 0.15);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

ul {
    list-style: none;
}

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

/* Typography Classes */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

.highlight {
    color: var(--accent-primary);
}

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

.section {
    padding: 100px 0;
}

.section-light {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 600px;
    margin-inline: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-primary);
    border-radius: 2px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #FFFFFF; /* Fixed white for gold contrast */
    box-shadow: var(--shadow-accent);
}

[data-theme="light"] .btn-primary {
    color: #FFFFFF; /* High contrast against Corporate Blue */
}

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

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

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

.btn-block {
    width: 100%;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background-color: var(--bg-surface-hover);
    color: var(--accent-primary);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.nav-container {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--text-primary);
}

.nav-list {
    display: flex;
    gap: 32px;
}

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

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-switcher {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-right: 8px;
    padding-right: 16px;
    border-right: 1px solid var(--border-color);
}

.lang-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.lang-btn:hover, .lang-btn.active {
    color: var(--text-primary);
    background-color: var(--bg-surface-hover);
}

@media (max-width: 768px) {
    .lang-switcher {
        border-right: none;
        padding-right: 0;
    }
}

.nav-toggle {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(212, 175, 55, 0.08) 0%, transparent 40%),
                radial-gradient(circle at bottom left, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
    z-index: 1;
}

[data-theme="light"] .hero-bg {
    background: radial-gradient(circle at top right, rgba(0, 86, 179, 0.06) 0%, transparent 40%),
                radial-gradient(circle at bottom left, rgba(0, 0, 0, 0.03) 0%, transparent 40%);
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 650px;
}

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

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-hover) 100%);
    border: 1px solid var(--border-color);
    aspect-ratio: 4/5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.placeholder-img {
    font-size: 8rem;
    color: var(--border-color);
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.facts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 40px;
}

.fact-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.fact-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-sm);
}

.fact-card h3 {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.fact-card span {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Expertise Section */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.expertise-card {
    background-color: var(--bg-surface);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    text-align: center;
}

.expertise-card:hover {
    background-color: var(--bg-surface-hover);
    transform: translateY(-8px);
    border-color: var(--border-focus);
    box-shadow: var(--shadow-md);
}

.expertise-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 24px;
}

.expertise-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

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

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-surface);
    padding: 32px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateX(5px);
    background: var(--bg-surface-hover);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.project-content {
    padding: 32px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.project-link {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
}

.project-link i {
    transition: transform 0.2s;
}

.project-link:hover i {
    transform: translateX(4px);
}

/* Timeline Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 40px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    top: 0;
    left: 13px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    border: 4px solid var(--bg-main);
    box-shadow: 0 0 0 2px var(--border-color);
}

.timeline-content {
    background-color: var(--bg-surface);
    padding: 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.timeline-item:hover .timeline-content {
    border-color: var(--accent-primary);
    transform: translateX(5px);
}

.timeline-year {
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* Markets Grid */
.markets-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.market-badge {
    padding: 12px 24px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-base);
    cursor: default;
}

.market-badge:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background-color: var(--bg-surface-hover);
}

/* Vision Section */
.vision-section {
    background: linear-gradient(rgba(11, 14, 20, 0.9), rgba(11, 14, 20, 0.9)), url('data:image/svg+xml;utf8,<svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%" fill="none" /></svg>') center/cover no-repeat;
    background-color: var(--accent-primary); /* Fallback */
    padding: 100px 0;
    text-align: center;
}

[data-theme="light"] .vision-section {
    background: linear-gradient(rgba(0, 86, 179, 0.95), rgba(0, 86, 179, 0.95));
}

.vision-content {
    max-width: 900px;
    margin: 0 auto;
}

.vision-icon {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 24px;
}

.vision-content h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    line-height: 1.4;
    color: #FFFFFF;
    margin-bottom: 32px;
    font-weight: 400;
}

.cta-tagline {
    font-size: 1.25rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: inline-block;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(255,255,255,0.3);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.contact-item p {
    font-size: 1.125rem;
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.social-links a:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #FFFFFF;
    transform: translateY(-3px);
}

/* Form */
.contact-form {
    background-color: var(--bg-surface);
    padding: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: var(--bg-surface-hover);
}

/* Footer */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 40px;
}

.footer-tagline {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 1.125rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.back-to-top {
    width: 40px;
    height: 40px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.back-to-top:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #FFFFFF;
}

/* Animations Tools */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-fade-up.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--header-bg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        padding: 20px 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.3s ease-in-out;
    }

    .nav.nav-open {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .facts-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}