/* --- General & Variables --- */
:root {
    --primary-color: #0d1b2a; /* Dark Blue-Black */
    --secondary-color: #e0e1dd; /* Off White */
    --accent-color: #3a86ff; /* Bright Blue */
    --text-color: #1b263b; /* Darker Text */
    --bg-color: #ffffff;
    --font-family: 'Poppins', sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-weight: 700;
    color: var(--primary-color);
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
p { margin-bottom: 1rem; }

section {
    padding: 60px 0;
    text-align: center;
}

/* --- Header & Footer --- */
.site-header {
    padding: 20px 0;
    border-bottom: 1px solid #f0f0f0;
}
.site-title {
    font-weight: 700;
    font-size: 1.2rem;
    margin: 0;
}
.site-footer {
    background-color: #f8f9fa;
    color: #6c757d;
    padding: 20px 0;
    text-align: center;
    font-size: 0.9rem;
}
.site-footer p {
    margin: 0;
}

/* --- Buttons --- */
.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}
.cta-button:hover {
    background-color: #2a73e8;
    transform: translateY(-2px);
}
.cta-button.secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}
.cta-button.secondary:hover {
    background-color: var(--accent-color);
    color: #fff;
}

/* --- Sections --- */
.hero-section {
    padding: 80px 0;
}
.subheadline {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 1rem auto 2rem;
    color: #495057;
}

.about-section {
    background-color: #f8f9fa;
}
.about-section p {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    text-align: left;
    margin-top: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.feature-item {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e0e1dd;
    font-weight: 600;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}
.portfolio-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.07);
    overflow: hidden;
    text-align: left;
}
.portfolio-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}
.portfolio-card h3, .portfolio-card p {
    padding: 0 1.5rem;
}
.portfolio-card h3 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}
.portfolio-card p {
    padding-bottom: 1.5rem;
    color: #495057;
}

.contact-section {
    background-color: var(--primary-color);
    color: #fff;
}
.contact-section h2, .contact-section p {
    color: #fff;
}
.contact-buttons {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- Responsive Design --- */
@media (min-width: 768px) {
    h1 { font-size: 3.5rem; }
    .portfolio-grid {
        grid-template-columns: 1fr 1fr;
    }
}