:root {
    --primary: #1F7A4F;
    --secondary: #0B3D2E;
    --dark: #1a1a1b;
    /* Coal/Dark Stone */
    --light: #f8f9fa;
    /* Light Grey */
    --text: #333;
    --transition: all 0.3s ease;
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--light);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    background: rgba(26, 26, 27, 0.95);
    padding: 1rem 5%;

    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(5px);
}

.logo {
    color: var(--primary);
    font-weight: 800;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.container {
    width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.hamburger {
    display: none;
    position: relative;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1000;
}

.hamburger:focus {
    outline: none;
}

.bar {
    display: block;
    width: 100%;
    height: 3px;
    margin-bottom: 5px;
    background-color: var(--light);
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
}

.bar:last-child {
    margin-bottom: 0;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

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

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%231a1a1b"/><path d="M0 100 L50 20 L100 100 Z" fill="%23222" opacity="0.5"/></svg>');
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 10%;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    max-width: 900px;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-page {
    min-height: 30vh;
    background: black;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 10%;
}

/* Cae study list */
.hero-case-study {
    min-height: 40vh;
    background: black;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 10%;
}

.case-study-section h2 {
    text-align: center;
    font-size: 2rem;
}

.case-study-list {
    padding: 10px 10%;
    justify-content: center;
    display: flex;
}

.case-study-container {
    max-width: 1200px;
    display: flex;
    align-items: top;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.case-study-text {
    flex: 1;
    min-width: 400px;
    border: 1px solid black;
    padding: 20px;
    border-radius: 20px;
    text-align: center;
    background-color: white;
}

.case-study-text p {
    text-align: left;
}

.case-study-title {
    text-align: center;
    margin-bottom: 4rem;
}

.case-study-title h3 {
    text-align: center;
    color: var(--text);
    /* position: relative; */
    padding-bottom: 15px;
    text-align: center;
}

.case-study-section h2::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary);
}

/* Articles */
.article-study-container {
    max-width: 1200px;
    display: flex;
    align-items: top;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.article-study-container a {
    text-decoration: none;
    color: var(--text);
}

.article-study-container img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.article-study-text {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    border: 1px solid black;
    padding: 20px;
    border-radius: 20px;
    text-align: center;
    background-color: white;
}

.article-study-text p {
    text-align: left;
}

.article-study-title {
    text-align: center;
    margin-bottom: 1rem;
}

.article-study-title h3 {
    text-align: center;
    color: var(--text);
    /* position: relative; */
    padding-bottom: 15px;
    text-align: center;
}

.article-study-title h2 {
    text-align: center;
    color: var(--text);
    /* position: relative; */
    padding:30px;
    text-align: center;
    margin-bottom: 50px;
}

.article-wide {
    max-width: none;
}

.article-image {
    max-width: 500px;
    float: left;
    margin: 0 15px 10px 0;
}

.page-image {
    flex: 1;
    min-width: 300px;
    background: var(--dark);
    height: 400px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}


.social-links a {
    color: var(--text);
    font-size: 2rem;
    transition: var(--transition);
    text-decoration: none;
}

.social-links a {
    margin-right: 10px;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--dark);
    color: var(--light);
}

.btn-primary:hover {
    background-color: var(--secondary);
    transform: translateY(-2px);
    color: var(--light);
}

/* Sections General */
section {
    padding: 100px 10%;
}

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

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark);
    position: relative;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary);
}

/* Services Grid */
#services {
    background: #eee;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-icon {
    color: var(--primary);
    width: 64px;
    height: 64px;
    font-size: 64px;
    margin-bottom: 2rem;
}

/* About Section */
.about-container {
    display: flex;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-image {
    flex: 1;
    min-width: 300px;
    background: var(--dark);
    height: 400px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page {
    padding: 100px 10%;
    justify-content: center;
    display: flex;
}

.page-container {
    max-width: 1200px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.page-text {
    flex: 1;
    min-width: 300px;
}

.page-image {
    flex: 1;
    min-width: 300px;
    background: var(--dark);
    height: 400px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Contact Form */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    text-align: center;
}

#email-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.contact-container i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

footer {
    background: var(--dark);
    color: white;
    padding: 3rem 10% 1rem;
    text-align: center;
}

.social-links {
    margin-bottom: 2rem;
}

/* Responsive */
@media (max-width: 900px) {

    /* Services Grid */
    .services-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }

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

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 300px;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.95);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.5);
        z-index: 999;

        transform: translateX(100%);
        transition: transform 0.4s ease-out;

        display: flex;
        justify-content: flex-start;
        flex-direction: column;
        padding-top: 80px;
    }

    .hamburger {
        display: block;
        cursor: pointer;
    }

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

    .nav-links ul {
        list-style: none;
        padding: 0;
        margin: 0;
        width: 100%;
    }

    .nav-links li {
        text-align: left;
        margin: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links a {
        display: block;
        text-decoration: none;
        color: #fff;
        padding: 15px 25px;
        font-size: 18px;
        font-weight: 400;
        text-transform: uppercase;
        transition: background-color 0.3s ease, color 0.3s ease;
    }

    .nav-links a:hover,
    .nav-links a:focus {
        background-color: rgba(255, 255, 255, 0.1);
        color: #ffd700;
    }

    section {
        padding: 60px 5%;
    }
}