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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    position: relative;
}

.theme-toggle {
    position: absolute;
    top: 0;
    right: 0;
    background: none;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
    transition: all 0.2s;
}

.theme-toggle:hover {
    color: #000;
    border-color: #ccc;
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

nav {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
}

.nav-btn {
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem 0;
    color: #666;
    transition: color 0.2s;
}

.nav-btn:hover {
    color: #000;
}

.nav-btn.active {
    color: #000;
    border-bottom: 2px solid #000;
}

.subnav {
    display: none;
    gap: 1.5rem;
    padding-left: 0;
    margin-top: 0.5rem;
}

.subnav.active {
    display: flex;
}

.subnav-btn {
    background: none;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.25rem 0;
    color: #888;
    transition: color 0.2s;
}

.subnav-btn:hover {
    color: #333;
}

.subnav-btn.active {
    color: #333;
    font-weight: 500;
}

.content {
    display: none;
}

.content.active {
    display: block;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    color: #555;
}

.experience-item, .project-item {
    margin-bottom: 2rem;
}

.experience-item h3, .project-item h3 {
    margin-top: 0;
}

.meta {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

a {
    color: #000;
    text-decoration: underline;
}

a:hover {
    color: #555;
}

ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    color: #555;
    margin-bottom: 0.25rem;
}

/* Resume compressed layout */
.resume-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.resume-section h3 {
    margin-top: 0;
    font-size: 1.1rem;
}

.resume-item {
    margin-bottom: 1rem;
}

.resume-title {
    font-weight: 600;
    color: #333;
    font-size: 0.95rem;
}

.resume-meta {
    font-size: 0.85rem;
    color: #888;
    line-height: 1.4;
}

/* Contact button styling */
#show-contact {
    background: none;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
    transition: all 0.2s;
}

#show-contact:hover {
    color: #000;
    border-color: #ccc;
}

#contact-info {
    margin-top: 1rem;
    padding: 1rem;
    background: #f9f9f9;
    border-radius: 4px;
}

#contact-info p {
    margin: 0;
    color: #333;
}

#contact-info p + p {
    margin-top: 0.5rem;
}

body.dark-mode #show-contact {
    border-color: #333;
    color: #999;
}

body.dark-mode #show-contact:hover {
    color: #fff;
    border-color: #555;
}

body.dark-mode #contact-info {
    background: #2a2a2a;
}

body.dark-mode #contact-info p {
    color: #e0e0e0;
}

body.dark-mode .resume-title {
    color: #e0e0e0;
}

body.dark-mode .resume-meta {
    color: #888;
}

/* Dark Mode Styles */
body.dark-mode {
    background: #1a1a1a;
    color: #e0e0e0;
}

body.dark-mode header {
    border-bottom-color: #333;
}

body.dark-mode .nav-btn {
    color: #999;
}

body.dark-mode .nav-btn:hover {
    color: #fff;
}

body.dark-mode .nav-btn.active {
    color: #fff;
    border-bottom-color: #fff;
}

body.dark-mode .subnav-btn {
    color: #666;
}

body.dark-mode .subnav-btn:hover {
    color: #ccc;
}

body.dark-mode .subnav-btn.active {
    color: #ccc;
}

body.dark-mode p,
body.dark-mode li {
    color: #aaa;
}

body.dark-mode .meta {
    color: #666;
}

body.dark-mode a {
    color: #fff;
}

body.dark-mode a:hover {
    color: #ccc;
}

body.dark-mode .theme-toggle {
    border-color: #333;
    color: #999;
}

body.dark-mode .theme-toggle:hover {
    color: #fff;
    border-color: #555;
}

/* Responsive Design */
@media (max-width: 640px) {
    nav {
        gap: 1.5rem;
    }
    
    .subnav {
        gap: 1rem;
    }
    
    h1 {
        font-size: 1.25rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .resume-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}