/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --bg-primary: #f5f5f3;
    --bg-secondary: #eaeae8;
    --text-primary: #2a2a2a;
    --text-secondary: #5a5a5a;
    --accent: #6b8f65;
    --accent-hover: #567a50;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 720px;
    --spacing-lg: 4rem;
    --spacing-md: 2rem;
    --spacing-sm: 1rem;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --text-primary: #e8e4df;
    --text-secondary: #a8a4a0;
    --accent: #a8c5a0;
    --accent-hover: #bdd4b6;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    z-index: 100;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.site-name {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    margin: 0;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-family: var(--font-main);
    transition: color 0.2s ease;
}

.theme-toggle:hover {
    color: var(--text-primary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.nav a:hover,
.nav a.active {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.nav-separator {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-line {
    margin-top: var(--spacing-sm);
    height: 1px;
    background: linear-gradient(to right, var(--accent), transparent);
}


/* ========================================
   About Section
   ======================================== */
.about {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: calc(var(--spacing-lg) + 8rem) var(--spacing-md) var(--spacing-lg);
}

.about-content {
    position: relative;
}

.profile-photo {
    float: left;
    width: 140px;
    height: 180px;
    object-fit: cover;
    margin-right: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.about-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.about-content strong {
    font-weight: 500;
}

.social-links {
    clear: both;
    padding-top: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-md);
}

.social-links a,
.about-content p a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.social-links a:hover,
.about-content p a:hover {
    color: var(--accent-hover);
}

/* ========================================
   Portfolio Section
   ======================================== */
.portfolio {
    padding: var(--spacing-lg) 0 0 0;
    background: var(--bg-primary);
}

.portfolio h2 {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.portfolio h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: var(--max-width);
    max-width: 90%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--accent), transparent);
}

.projects-container {
    display: flex;
    flex-direction: column;
}

/* ========================================
   Project Cards
   ======================================== */
.project {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    align-items: flex-start;
    padding: var(--spacing-lg) 10%;
    background: var(--bg-primary);
}

.project:nth-child(odd) {
    background: var(--bg-secondary);
}

.project-poster {
    flex: 0 0 200px;
    width: 200px;
    min-width: 200px;
    max-width: 200px;
    height: 300px;
    object-fit: cover;
    object-position: left;
    transition: opacity 0.3s ease;
    border-radius: 2px;
}

.project-link {
    flex: 0 0 auto;
}

.project:hover .project-poster {
    opacity: 0.9;
}

.project-info {
    flex: 1;
}

.project-info h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.project-info h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.project-info h3 a:hover {
    color: var(--accent);
}

.project-info .role {
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.project-info .description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.accolades {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.accolade {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 600px) {
    .profile-photo {
        float: left;
        width: 130px;
        height: 170px;
        margin: 0 var(--spacing-sm) var(--spacing-sm) 0;
    }

    .about {
        padding-top: calc(var(--spacing-lg) + 8rem);
    }

    .project {
        flex-direction: column;
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .project-poster {
        flex: none;
        width: 100%;
        max-width: 200px;
        height: 300px;
        margin: 0 auto;
        object-fit: cover;
    }
}