:root {
    /* Colors */
    --color-primary: #0D1821;
    --color-secondary: #B1C7D6;
    --color-background: #1A2633;
    --color-background-footer: #070E14;
    --color-button: #3E6D99;
    --color-text-light: #F0F2F5; /* For general text on dark backgrounds */
    --color-text-dark: #2C3E50; /* For general text on light backgrounds if ever needed */
    --color-accent-line: #5A8DB7; /* A brighter accent for footer line */

    /* Section Backgrounds */
    --section-bg-1: #1F2B3B;
    --section-bg-2: #1C2938;
    --section-bg-3: #253447;

    /* Fonts */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-easing: ease-in-out;

    /* Shadows */
    --shadow-subtle-inner: inset 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-lift: 0 8px 15px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 10px rgba(90, 141, 183, 0.6); /* For header links */
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-light);
    background-color: var(--color-background);
    line-height: 1.8; /* Generous line-height for readability */
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden; /* Prevent horizontal scroll due to animations */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-secondary);
    line-height: 1.2;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 2.8rem;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 2.2rem;
}

p {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-easing);
}

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

/* Layout & Structure */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden; /* For potential background effects */
}

.section-bg-1 {
    background-color: var(--section-bg-1);
}

.section-bg-2 {
    background-color: var(--section-bg-2);
}

.section-bg-3 {
    background-color: var(--section-bg-3);
}

/* Header Styles */
.header {
    background-color: var(--color-primary);
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: background-color var(--transition-speed) var(--transition-easing), box-shadow var(--transition-speed) var(--transition-easing);
    padding: var(--spacing-sm) 0;
}

.header-scrolled {
    background: linear-gradient(to bottom, var(--color-primary), rgba(13, 24, 33, 0.9));
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-speed) var(--transition-easing);
}

.logo:hover {
    color: var(--color-button);
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links li a {
    color: var(--color-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 0.08em;
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    transition: all var(--transition-speed) var(--transition-easing);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -5px;
    width: 0;
    height: 2px;
    background-color: var(--color-button);
    transition: width var(--transition-speed) var(--transition-easing), left var(--transition-speed) var(--transition-easing);
}

.nav-links li a:hover {
    color: var(--color-button);
    text-shadow: var(--shadow-glow);
}

.nav-links li a:hover::after {
    width: 100%;
    left: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all var(--transition-speed) var(--transition-easing);
    box-shadow: var(--shadow-subtle-inner);
    position: relative;
    overflow: hidden;
    color: var(--color-text-light); /* Default white text */
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-button) 0%, #2A5B8A 100%);
    color: var(--color-text-light);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lift);
    background: linear-gradient(135deg, #2A5B8A 0%, var(--color-button) 100%);
}

.btn-header-contact {
    background: linear-gradient(135deg, #E06B20 0%, #BF571A 100%); /* Distinct, eye-catching color */
    color: var(--color-text-light);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-size: 1.05rem;
    box-shadow: 0 4px 10px rgba(224, 107, 32, 0.4);
}

.btn-header-contact:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(224, 107, 32, 0.6);
    background: linear-gradient(135deg, #BF571A 0%, #E06B20 100%);
}

/* Footer Styles */
.footer {
    background-color: var(--color-background-footer);
    color: var(--color-secondary);
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    font-size: 0.95rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--color-accent-line), transparent);
}

.footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.footer-col {
    flex: 1;
    min-width: 200px;
    margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
    color: var(--color-text-light);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--color-button);
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col ul li a {
    color: var(--color-secondary);
    transition: color var(--transition-speed) var(--transition-easing);
}

.footer-col ul li a:hover {
    color: var(--color-button);
    text-decoration: underline;
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-icons a {
    color: var(--color-secondary);
    font-size: 1.5rem;
    transition: transform var(--transition-speed) var(--transition-easing), color var(--transition-speed) var(--transition-easing);
}

.social-icons a:hover {
    color: var(--color-button);
    transform: translateY(-3px) scale(1.1);
}

.footer-bottom {
    border-top: 1px solid rgba(177, 199, 214, 0.1);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-lg);
    text-align: center;
    color: rgba(177, 199, 214, 0.7);
}

/* Utility Classes (if not using Tailwind directly for these) */
.text-center {
    text-align: center;
}

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

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

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* Responsive Adjustments */
@media (max-width: 992px) {
    h1 {
        font-size: 2.8rem;
    }
    h2 {
        font-size: 2.2rem;
    }
    .nav-links {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    .logo {
        font-size: 2rem;
    }
    .footer .container {
        flex-direction: column;
        align-items: center;
    }
    .footer-col {
        text-align: center;
        width: 100%;
    }
    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    .social-icons {
        justify-content: center;
    }
    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    p {
        font-size: 1rem;
    }
    .btn {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

/* Subtle on-scroll animations (AOS library uses data-aos attributes, this is for general subtle effects) */
/* Example: Fade up effect for content sections */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s var(--transition-easing), transform 0.8s var(--transition-easing);
}

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

/* Keyframe for subtle glow (if needed for other elements) */
@keyframes pulse-glow {
    0% {
        box-shadow: 0 0 5px rgba(90, 141, 183, 0.4);
    }
    50% {
        box-shadow: 0 0 15px rgba(90, 141, 183, 0.8);
    }
    100% {
        box-shadow: 0 0 5px rgba(90, 141, 183, 0.4);
    }
}



/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}