/* =======================================
   CSS Variables
   ======================================= */
:root {
    --primary-blue: #0A2351; /* Extracted from Logo */
    --primary-green: #00A36C; /* Extracted from Logo */
    --secondary-blue: #07193f;
    --secondary-green: #008a5b;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f4f7f6;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

/* =======================================
   Global Styles
   ======================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =======================================
   Typography
   ======================================= */
h1, h2, h3 {
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
    color: var(--text-light);
}

/* =======================================
   Buttons
   ======================================= */
.btn-primary {
    display: inline-block;
    background-color: var(--primary-green);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-primary-outline {
    display: inline-block;
    background-color: transparent;
    color: var(--primary-green);
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--primary-green);
}

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

.btn-secondary {
    display: inline-block;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: var(--secondary-blue);
    color: var(--white);
}

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

/* =======================================
   Navigation
   ======================================= */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo-img {
    height: 60px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    font-weight: 600;
    color: var(--primary-blue);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-green);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--primary-blue);
}

/* =======================================
   Hero Section
   ======================================= */
.hero {
    background: linear-gradient(rgba(10, 35, 81, 0.85), rgba(0, 163, 108, 0.85)), url('../images/hero-bg.jpg') center/cover no-repeat;
    padding: 180px 0 130px 0;
    text-align: center;
    color: var(--white);
}

.hero-text h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--white);
}

.hero-text p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 30px auto;
    color: #e2e8f0;
}

.hero-text .btn-primary {
    margin-right: 15px;
}

/* =======================================
   About & Services Sections
   ======================================= */
.about-section, .services-section, .contact-section {
    padding: 80px 0;
}

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

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
}

.section-title .underline {
    width: 60px;
    height: 4px;
    background-color: var(--primary-green);
    margin: 10px auto 0 auto;
}

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

.service-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: var(--transition);
    border-top: 4px solid var(--white);
}

.service-card:hover {
    transform: translateY(-5px);
    border-top-color: var(--primary-green);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--primary-green);
}

/* =======================================
   Contact Section
   ======================================= */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

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

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
}

/* =======================================
   Footer
   ======================================= */
footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

footer .footer-logo img {
    height: 60px;
    margin-bottom: 20px;
    /* Since logo has white background it might not look perfect on dark background,
       A CSS filter can invert it or we can keep it as is. 
       Usually a dark logo needs a white bg. Let's add a white pill background to logo in footer */
    background: #fff;
    padding: 5px 10px;
    border-radius: 4px;
}

footer p {
    color: #a0aec0;
}

/* =======================================
   Responsive Design
   ======================================= */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 16px 0;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }
    
    .hero-text .btn-primary {
        margin-right: 0;
        margin-bottom: 15px;
        display: block;
    }
    
    .hero-text .btn-secondary {
        display: block;
    }
}