/* ==========================================================================
   CSS Variables & Custom Properties
   ========================================================================== */
   :root {
    /* Color Palette - Clean, Professional, Minimalist White Theme */
    --color-primary: #0a192f; /* Deep Navy from logo for strong contrast */
    --color-secondary: #d4af37; /* Gold accent from logo */
    --color-secondary-light: #f5e4a8;
    
    /* Backgrounds & Surfaces (Strictly white/light as requested) */
    --bg-main: #ffffff;
    --bg-surface: #ffffff;
    --bg-alt: #fdfdfd; /* Very subtle off-white for section distinction if needed */
    
    /* Typography Colors */
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #737373;
    
    /* Borders & Shadows */
    --border-light: rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --shadow-hover: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* Layout */
    --container-width: 1200px;
    --section-padding: 6rem 0;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

body {
    font-family: var(--font-family-base);
    color: var(--text-primary);
    background-color: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--color-secondary);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}

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

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */
.lead-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    display: inline-block;
    position: relative;
    padding-bottom: 1rem;
}

.divider {
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
    margin: 0 auto 1.5rem auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-align: center;
}

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

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    padding: 1rem 0;
}

.header.scrolled {
    padding: 0.5rem 0;
}

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

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

.logo {
    height: 50px;
    transition: height var(--transition-normal);
}

.header.scrolled .logo {
    height: 40px;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--color-primary);
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-main);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mobile-nav-link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* offset for header */
    background-color: var(--bg-main);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(circle, var(--bg-alt) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
    opacity: 0.5;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a365d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-visual {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-abstract-shape {
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(245, 228, 168, 0.2) 0%, rgba(255, 255, 255, 0) 100%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(40px);
}

.hero-img {
    max-width: 100%;
    filter: drop-shadow(0 20px 30px rgba(0,0,0,0.15));
    animation: float 6s ease-in-out infinite;
}

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

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

.about-content {
    max-width: 900px;
    margin: 0 auto 4rem auto;
    text-align: justify;
    text-align-last: center;
}

.about-content p {
    margin-bottom: 1.5rem;
}

.vision-mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.card {
    background-color: var(--bg-surface);
    border-radius: 12px;
    padding: 3rem 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
    height: 100%;
}

.card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
    border-color: rgba(212, 175, 55, 0.2); /* very subtle gold border on hover */
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--color-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.vision-card h3, .mission-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.mission-list {
    text-align: left;
}

.mission-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.mission-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

.closing-statement {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    border-left: 4px solid var(--color-secondary);
    background-color: rgba(0,0,0,0.01);
}

.closing-statement p {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin: 0;
}

/* ==========================================================================
   Business Section (Projects Grid)
   ========================================================================== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.project-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-10px);
}

.project-img-wrapper {
    position: relative;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

.project-info {
    padding: 2rem;
}

.project-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    margin: 0;
    font-size: 0.95rem;
}

/* ==========================================================================
   Partners Section
   ========================================================================== */
.partners {
    background-color: var(--bg-main);
    text-align: center;
}

.partners-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem;
    background-color: var(--bg-surface);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.partners-img {
    max-width: 100%;
    height: auto;
    filter: grayscale(100%);
    opacity: 0.8;
    transition: all var(--transition-normal);
}

.partners-wrapper:hover .partners-img {
    filter: grayscale(0%);
    opacity: 1;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 4rem 0 2rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    height: 50px;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer h4 {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.footer h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 30px;
    height: 2px;
    background-color: var(--color-secondary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin: 0;
}

/* ==========================================================================
   Animations & Reveals
   ========================================================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        padding-top: 2rem;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .hero-text {
        order: 1;
    }

    .hero-visual {
        order: 2;
        margin-top: 3rem;
    }

    .vision-mission-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .section {
        padding: 4rem 0;
    }
    
    .about-content {
        text-align-last: left;
    }

    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}