/* ==========================================================================
   Design System & Custom Properties
   ========================================================================== */
   :root {
    /* Colors */
    --color-navy: #0A192F;
    --color-navy-light: #112240;
    --color-navy-muted: #233554;
    --color-white: #FFFFFF;
    --color-gray-light: #F8F9FA;
    --color-gray-medium: #E2E8F0;
    --color-gray-dark: #64748B;
    --color-text-main: #334155;
    --color-text-muted: #64748B;
    --color-accent: #3B82F6; /* Optional muted blue accent for links/hovers */

    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Borders & Shadows */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.03);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    color: var(--color-navy);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: var(--space-sm);
}

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

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

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

ul {
    list-style: none;
}

/* ==========================================================================
   Layout & Utility Classes
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-xl) 0;
}

.section-dark {
    background-color: var(--color-navy);
    color: var(--color-white);
}

.section-dark h1, .section-dark h2, .section-dark h3 {
    color: var(--color-white);
}

.section-dark p {
    color: rgba(255, 255, 255, 0.8);
}

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

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

.section-subtitle {
    display: block;
    color: var(--color-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
    margin-bottom: var(--space-xs);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #2563EB; /* Darker blue */
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: rgba(255,255,255,0.1);
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    background-color: transparent;
    padding: var(--space-md) 0;
}

.header.scrolled {
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) 0;
    box-shadow: var(--shadow-sm);
}

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

.logo-img {
    height: 80px;
    max-width: 280px;
    object-fit: contain;
    width: auto;
    filter: brightness(0) invert(1);
    transition: filter var(--transition-normal);
}

/* Initially logo might need brightness adjustment if on dark hero */
.header:not(.scrolled) .logo-img {
    /* Removed filter to keep original logo colors */
}

.main-nav {
    display: flex;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

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

.header.scrolled .nav-link {
    color: var(--color-white);
}

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

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

.header.scrolled .nav-link.btn-contact {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.nav-link.btn-contact {
    background-color: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
}

.nav-link.btn-contact::after {
    display: none;
}

.nav-link.btn-contact:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.hamburger, .hamburger::before, .hamburger::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-white);
    position: absolute;
    transition: all var(--transition-normal);
}

.header.scrolled .hamburger, .header.scrolled .hamburger::before, .header.scrolled .hamburger::after {
    background-color: var(--color-white);
}

.hamburger { top: 9px; }
.hamburger::before { top: -9px; }
.hamburger::after { bottom: -9px; }

.mobile-menu-btn.active .hamburger { background-color: transparent; }
.mobile-menu-btn.active .hamburger::before { top: 0; transform: rotate(45deg); background-color: var(--color-navy); }
.mobile-menu-btn.active .hamburger::after { bottom: 0; transform: rotate(-45deg); background-color: var(--color-navy); }

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--space-xl);
    overflow: hidden;
}

.parallax-bg {
    background-image: url('../images/hero_bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.parallax-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 25, 47, 0.75); /* Deep navy overlay for text legibility */
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
}

.eyebrow {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 800;
    letter-spacing: 0.2em;
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    max-width: 800px;
    text-align: justify;
}
.txtalnjust{
    text-align: justify;

}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.mv-block h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mv-block h3::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

.visual-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: var(--color-gray-light);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-gray-medium);
}

.visual-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--color-gray-medium) 1px, transparent 1px),
                      linear-gradient(90deg, var(--color-gray-medium) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
}

.visual-logo-subtle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 80px;
    opacity: 0.1;
    filter: grayscale(100%);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services .section-header {
    margin-bottom: var(--space-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-medium);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(59, 130, 246, 0.3);
}

.service-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.service-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: 0.875rem;
    margin-top: var(--space-sm);
}

/* ==========================================================================
   Why Choose Us
   ========================================================================== */
.why-us-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.benefits-list {
    margin-top: var(--space-md);
}

.benefits-list li {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.benefit-icon {
    color: var(--color-accent);
    font-weight: bold;
    flex-shrink: 0;
}

.benefit-text strong {
    display: block;
    color: var(--color-navy);
    margin-bottom: 0.25rem;
}

.benefit-text span {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1/1;
    background-color: var(--color-navy-light);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.rounded-image {
    border-radius: var(--radius-lg);
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}

.abstract-shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
}

.shape-1 {
    width: 80%;
    height: 80%;
    top: -10%;
    right: -10%;
}

.shape-2 {
    width: 60%;
    height: 60%;
    bottom: -20%;
    left: -10%;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
    padding: var(--space-xl) 0;
    background-image: radial-gradient(circle at center, var(--color-navy-muted) 0%, var(--color-navy) 100%);
}

.cta-section h2 {
    max-width: 800px;
    margin: 0 auto var(--space-sm);
}

.cta-section p {
    max-width: 600px;
    margin: 0 auto var(--space-md);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
}

.contact-details {
    margin-top: var(--space-md);
    display: grid;
    gap: var(--space-sm);
}

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

.detail-icon {
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.detail-text strong {
    display: block;
    color: var(--color-navy);
    font-size: 0.875rem;
    margin-bottom: 2px;
}

.detail-text a, .detail-text span {
    color: var(--color-text-muted);
}

.contact-form-wrapper {
    background-color: var(--color-white);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-medium);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--color-navy);
}

.form-group input, .form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background-color: var(--color-white);
}

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

.form-status {
    grid-column: 1 / -1;
    text-align: center;
    font-size: 0.875rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    display: none;
}

.form-status.success {
    display: block;
    background-color: #DEF7EC;
    color: #03543F;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-navy);
    color: var(--color-gray-medium);
    padding-top: var(--space-xl);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.brand-col .footer-logo {
    height: 60px;
    max-width: 220px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    margin-bottom: var(--space-sm);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.social-links a {
    color: var(--color-gray-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.05);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.footer h4 {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.links-col ul li {
    margin-bottom: 0.5rem;
}

.links-col a {
    color: var(--color-gray-medium);
}

.links-col a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: var(--space-sm) 0;
    text-align: center;
    font-size: 0.875rem;
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.is-visible {
    opacity: 1;
    transform: translate(0);
}

@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .fade-in-up, .fade-in-left, .fade-in-right {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .about-container, .why-us-container, .contact-container, .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .contact-container {
        display: flex;
        flex-direction: column-reverse;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--space-lg) 0;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }

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

    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(10, 25, 47, 0.98);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        z-index: 1000;
    }

    .main-nav.active {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .nav-link, .header.scrolled .nav-link {
        color: var(--color-white);
        font-size: 1.25rem;
    }

    .nav-link.btn-contact, .header.scrolled .nav-link.btn-contact {
        background-color: var(--color-accent);
        color: var(--color-white);
        border-color: var(--color-accent);
        padding: 0.75rem 2rem;
    }
    
    .header:not(.scrolled) .logo-img {
        /* Ensure logo is dark when mobile menu is open, otherwise it will be invisible on white bg */
    }
    
    .header.menu-open .logo-img {
        filter: none;
    }

    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .footer-container {
        grid-template-columns: 1fr;
    }
}