/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background-color: #ffffff;
    font-size: 16px;
}

.container {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero { display:none; }

/* New two-column layout */
.layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 24px;
}

.sidebar {
    position: sticky;
    top: 24px;
    height: fit-content;
}

.sidebar-inner {
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 18px;
    background: #fff;
}

.sidebar-name { font-size: 1.6rem; line-height:1.2; margin-bottom: 6px; }
.sidebar-tagline { color:#4b5563; font-size: 0.95rem; margin-bottom: 14px; }
.sidebar-links { display:flex; flex-direction:column; gap:8px; margin-bottom: 16px; }
.sidebar-links a { color:#111827; border-bottom:1px dashed #e5e7eb; width:fit-content; }
.sidebar-nav { display:flex; flex-wrap:wrap; gap:8px; }
.nav-btn { padding:8px 10px; border:1px solid #e5e7eb; border-radius:8px; background:#fafafa; font-weight:600; }
.nav-btn:hover{ background:#f3f4f6; }

.main { min-width: 0; }

.hero-name {
    font-size: 4.5rem;
    font-weight: 400;
    margin-bottom: 32px;
    line-height: 1;
}

.first-name {
    font-weight: 300;
}

.last-name {
    font-weight: 600;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #4a4a4a;
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-contact {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.8;
    word-wrap: break-word;
}

.hero-contact a {
    color: #1a1a1a;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.hero-contact a:hover {
    border-bottom-color: #1a1a1a;
    opacity: 1;
}

.separator {
    margin: 0 8px;
    color: #ccc;
}

/* Section Styles */
section { padding: 56px 0; }

.section-title {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 16px;
    color: #1a1a1a;
}

.section-subtitle { font-size: 1.1rem; font-weight: 400; color: #4a4a4a; margin-bottom: 24px; }

/* About Section */
.about {
    background-color: #fafafa;
}

.about-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: #4a4a4a;
    margin-bottom: 24px;
    max-width: 700px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* Selected Work Section */
.selected-work { background-color: #ffffff; }

/* Grid layout for projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 18px;
    transition: all 0.2s ease;
}

.project-card:hover {
    border-color: #d0d0d0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}


.project-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 14px;
    border: 1px solid #eee;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.project-year { font-size: 0.8rem; color: #374151; background:#f3f4f6; border:1px solid #e5e7eb; padding:2px 8px; border-radius:999px; display:inline-block; }

.project-award {
    font-size: 0.875rem;
    color: #8b5a3c;
    font-weight: 500;
}

.project-description {
    font-size: 1rem;
    line-height: 1.6;
    color: #4a4a4a;
    margin-bottom: 24px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    background: #f5f5f5;
    color: #666;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid #e5e5e5;
}

/* Project links */
.project-links {
    margin-top: 14px;
}

.project-link {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    color: #1a1a1a;
    border-bottom: 1px solid #1a1a1a;
    padding-bottom: 2px;
}
/* Button-style GitHub links */
.project-actions { margin-top: 12px; }
.btn-link {
    display: inline-block;
    padding: 10px 14px;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    background: #f9fafb;
    color: #111827;
    font-weight: 600;
}
.btn-link:hover { background: #f3f4f6; }

.project-link:hover {
    opacity: 0.7;
}

/* Archive Section */
.archive {
    background-color: #fafafa;
}

.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.achievement-item {
    padding-bottom: 40px;
    border-bottom: 1px solid #e5e5e5;
}

.achievement-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.achievement-header {
    margin-bottom: 16px;
}

.achievement-header h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.achievement-org {
    font-size: 0.875rem;
    color: #666;
    margin-bottom: 2px;
}

.achievement-date {
    font-size: 0.875rem;
    color: #666;
}

.achievement-description {
    font-size: 1rem;
    line-height: 1.6;
    color: #4a4a4a;
    margin-bottom: 12px;
}

.achievement-note {
    font-size: 0.875rem;
    color: #8b5a3c;
    font-style: italic;
}

/* Contact Section */
.contact {
    background-color: #ffffff;
}

.contact-intro {
    font-size: 1rem;
    line-height: 1.7;
    color: #4a4a4a;
    max-width: 600px;
}

/* Footer */
.footer {
    background-color: #fafafa;
    padding: 48px 0;
    border-top: 1px solid #e5e5e5;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: #666;
    margin: 0;
}

.footer-note {
    margin-top: 4px !important;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .layout { grid-template-columns: 1fr; gap:16px; margin:20px auto; }
    .sidebar { position: static; }
    .container {
        padding: 0 20px;
    }
    
    .hero { display:none; }
    
    .hero-name {
        font-size: 3rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-contact {
        font-size: 0.875rem;
    }
    
    .separator {
        display: block;
        margin: 4px 0;
        opacity: 0;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1.125rem;
    }
    
    .project-card { padding: 20px; }
    .project-image { height: 140px; }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .achievement-list {
        gap: 32px;
    }
    
    .achievement-item {
        padding-bottom: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .project-card {
        padding: 20px;
    }
    
    .project-tech {
        gap: 6px;
    }
    
    .project-tech span {
        font-size: 0.7rem;
        padding: 3px 10px;
    }
}

/* Smooth scrolling improvements */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid #4a90e2;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .hero-contact .separator {
        display: inline;
        margin: 0 8px;
    }
    
    .project-card {
        break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
}