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

/*Variables*/
:root {
    --clr-primary: #009DF0;
    --clr-accent-light: #F09B00;
    --clr-accent-dark: #F04E00;
    --clr-card-background: #E3F0FB;
    --clr-page-background: #fffcf6;
    --clr-text-light: #263f4a;
    --clr-text-main: #1B0A14;
    --clr-header-bg: #43665f;
    --clr-nav-bg: #F2D7C0;
    
    --fs-h1: 2.5rem;
    --fs-h2: 1.5rem;
    --fs-text: 1rem;
}

html {
    height: 100%;
}

body {
    font-family: 'Open Sans', Arial, sans-serif;
    line-height: 1.5;
    background-color: var(--clr-page-background);
    color: var(--clr-text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    width: 100%;
    background-color: var(--clr-header-bg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.nav-logo {
    background-color: var(--clr-nav-bg);
    border-radius: 20px;
    padding: 5px;
}

nav ul.nav-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    list-style: none;
}

nav ul.nav-links a {
    color: #5D3A28;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    background-color: var(--clr-nav-bg);
    font-weight: 500;
    transition: background-color 0.3s ease;
}

nav ul.nav-links a:hover,
nav ul.nav-links a:focus {
    background-color: #A68B78;
    outline: none;
}

.header-content {
    text-align: center;
    padding: 2rem;
    background-color: var(--clr-page-background);
}

.header-content h1 {
    font-size: var(--fs-h1);
    color: var(--clr-text-main);
    font-weight: 700;
}

/* Main content */
main {
    flex: 1;
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

#projects {
    display: grid;
    grid-template-columns: 1fr; /* Single column for mobile */
    gap: 2rem;
}

#projects h2 {
    font-size: var(--fs-h2);
    color: var(--clr-text-main);
    margin-bottom: 1rem;
}

#projects p {
    color: var(--clr-text-light);
    font-size: var(--fs-text);
    line-height: 1.6;
    max-width: 65ch;
}

.project-card {
    display: flex;
    flex-direction: column;
    background-color: var(--clr-card-background);
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(91, 127, 161, 0.3);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(91, 127, 161, 0.4);
}

.project-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-description {
    padding: 1.5rem;
    flex: 1;
}

.project-description h2 {
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background-color: #4A5052;
    color: #F2D7C0;
    padding: 2rem;
    text-align: center;
    width: 100%;
    margin-top: auto;
}

footer p {
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a img {
    width: 2rem;
    height: 2rem;
    filter: brightness(0) invert(1);
    transition: transform 0.3s ease;
}

.social-links a:hover img {
    transform: scale(1.1);
}

/* Responsive Design - Mobile First */
@media (min-width: 600px) {
    nav ul.nav-links {
        flex-direction: row;
    }
    
    #projects {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-image {
        height: 200px;
    }
}

@media (min-width: 900px) {
    #projects {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .project-image {
        height: 250px;
    }
}