/* =========================================================================
   DESIGN TOKENS & VARIABLES
   ========================================================================= */
:root {
    /* Colors derived from Logo */
    --color-primary: #0C3D65;    /* Dark Blue */
    --color-primary-light: #185e99;
    --color-primary-dark: #07253d;
    
    --color-secondary: #5E7482;  /* Greyish Blue */
    --color-secondary-light: #8b9ea9;
    
    --color-dark: #051C2F;       /* Very Dark Navy for texts/dark backgrounds */
    --color-light: #f8f9fa;      /* Off white */
    --color-white: #ffffff;
    --color-black: #000000;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Box Shadows */
    --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, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* =========================================================================
   RESET & GLOBAL STYLES
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-dark);
    line-height: 1.2;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

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

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

/* =========================================================================
   TYPOGRAPHY
   ========================================================================= */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 50px;
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    text-align: center;
    border: none;
    transition: var(--transition-medium);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.125rem;
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
    display: block;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

/* =========================================================================
   HEADER & NAVBAR
   ========================================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-medium);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

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

.logo-img {
    height: 80px;
    transition: var(--transition-medium);
}

.header.scrolled .logo-img, .header.mobile-open .logo-img {
    filter: brightness(1) invert(0);
}

.header:not(.scrolled):not(.mobile-open) .logo-img {
    /* Assuming original logo is colorful or dark, if it needs to be white on hero: */
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.primary-navigation {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--color-white);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
}

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

.header.scrolled .nav-link.btn-primary {
    color: var(--color-white);
    padding: 1rem;
}

.nav-link:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

.header:not(.scrolled) .nav-link:not(.btn)::after {
    background-color: var(--color-white);
}

.nav-link:not(.btn):hover::after, .nav-link.active::after {
    width: 100%;
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.header.scrolled .mobile-nav-toggle {
    color: var(--color-dark);
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: -2;
    transform: scale(1.05); /* Slight zoom for premium feel */
    animation: zoomBg 20s infinite alternate linear;
}

@keyframes zoomBg {
    from { transform: scale(1.05); }
    to { transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(5, 28, 47, 0.85) 0%, rgba(12, 61, 101, 0.6) 100%);
    z-index: -1;
}

.hero-container {
    max-width: 800px;
    color: var(--color-white);
}

.hero-subtitle {
    display: inline-block;
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-secondary-light);
    margin-bottom: 15px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-title span {
    color: #a8d5ff; /* Soft contrast blue */
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

/* =========================================================================
   ABOUT SECTION
   ========================================================================= */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-medium);
    border: 1px solid rgba(0,0,0,0.03);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(12, 61, 101, 0.1);
}

.about-icon {
    width: 80px;
    height: 80px;
    background: rgba(12, 61, 101, 0.05);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 24px;
    transition: var(--transition-medium);
}

.about-card:hover .about-icon {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.about-card p {
    color: var(--text-secondary);
}

/* =========================================================================
   SERVICES SECTION
   ========================================================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-medium);
    group: hover;
    border: 1px solid rgba(0,0,0,0.05);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-img-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover .service-img {
    transform: scale(1.08);
}

.service-icon-overlay {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.service-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    min-height: 72px; /* Ensure even heights */
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--color-primary);
}

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

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

/* =========================================================================
   CONTACT SECTION
   ========================================================================= */
.contact {
    background-color: var(--color-dark);
    color: var(--color-white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h2 {
    color: var(--color-white);
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.contact-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-white);
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--color-white);
    margin-bottom: 5px;
    font-size: 1.125rem;
}

.contact-item p, .contact-item a {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
}

.contact-item a:hover {
    color: var(--color-white);
}

.contact-form-wrapper {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.contact-form h3 {
    font-size: 1.75rem;
    margin-bottom: 24px;
    color: var(--color-dark);
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
    background-color: var(--color-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(12, 61, 101, 0.1);
    background-color: var(--color-white);
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    background-color: #031221;
    color: rgba(255, 255, 255, 0.7);
    padding-top: 80px;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    height: 48px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-brand p {
    max-width: 350px;
}

.footer h4 {
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer ul li a {
    color: rgba(255, 255, 255, 0.7);
}

.footer ul li a:hover {
    color: var(--color-white);
    padding-left: 5px;
}

.footer-bottom {
    background-color: #020b14;
    padding: 24px 0;
    text-align: center;
    font-size: 0.9rem;
}

/* =========================================================================
   ANIMATIONS & UTILITIES
   ========================================================================= */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.slide-up {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.zoom-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease-out, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.zoom-in.visible {
    opacity: 1;
    transform: scale(1);
}

.scale-up {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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


/* =========================================================================
   MEDIA QUERIES
   ========================================================================= */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        margin-top: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .primary-navigation {
        position: fixed;
        background: rgba(255, 255, 255, 0.98);
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        transition: right 0.4s ease;
        z-index: -1;
    }
    
    .header.mobile-open .primary-navigation {
        right: 0;
    }
    
    .header.mobile-open {
        background: transparent !important;
        box-shadow: none !important;
    }
    
    .nav-link {
        color: var(--text-primary) !important;
        font-size: 1.25rem;
    }
    
    .nav-link.btn {
        margin-top: 20px;
    }
    
    .hero {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }
}