/* ============================================
   Academic Personal Website - Styles
   Clean, minimal, reference-inspired design
   ============================================ */

/* CSS Variables for easy theming */
:root {
    --color-text: #1a1a1a;
    --color-text-muted: #4a4a4a;
    --color-accent: #0066cc;
    --color-accent-hover: #004499;
    --color-border: #e0e0e0;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-page-bg: #f2f3f5;
    --color-block-bg: #ffffff;
    --block-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --block-radius: 8px;
    --font-serif: 'Source Serif 4', Georgia, serif;
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1000px;
    --spacing-unit: 1.5rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-page-bg);
    /* Optional: add a personalized background image; content blocks and header stay white on top:
       background-image: url('assets/your-bg.jpg');
       background-size: cover;
       background-attachment: fixed; */
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 600;
}

h1 {
    font-size: 2rem;
    margin: 0 0 0.25rem 0;
}

h2 {
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

h3 {
    font-size: 1.125rem;
    margin: 1.5rem 0 0.75rem 0;
}

p {
    margin: 0 0 1rem 0;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-unit) 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text);
}

.header-logo:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.header-nav {
    display: flex;
    gap: 1.5rem;
}

.header-nav a {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.header-nav a:hover {
    color: var(--color-accent);
}

/* Main Content */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

/* Explicit block frame – keeps content readable over any page background */
.block-frame {
    background-color: var(--color-block-bg);
    border-radius: var(--block-radius);
    box-shadow: var(--block-shadow);
    padding: 1.25rem 1.5rem;
}

/* Profile Block: Photo left, content right */
.profile-block {
    margin-bottom: 1rem;
}


.profile-layout {
    display: flex;
    gap: 2.5rem;
    align-items: flex-start;
}

.profile-photo {
    flex-shrink: 0;
    width: 220px;
}

.profile-photo img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
    background: var(--color-bg-alt);
}

.photo-caption {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin: 0.5rem 0 0 0;
}

.profile-content {
    flex: 1;
    min-width: 0;
}

.profile-title {
    color: var(--color-text-muted);
    font-size: 1rem;
    margin: 0 0 0.25rem 0;
}

.profile-degree {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin: 0 0 1rem 0;
}

.profile-intro p {
    max-width: 80ch;
    margin: 0 0 0.55rem 0;
    line-height: 1.5;
}

/* Profile links - inline icons like reference image */
.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    margin-top: 1rem;
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.profile-link:hover {
    color: var(--color-accent);
}

.profile-link .icon {
    flex-shrink: 0;
}

/* Section blocks – each is a separate framed card; tighter spacing between blocks */
.section {
    margin-bottom: 1rem;
}

.section:last-child {
    margin-bottom: 0;
}

.section.block-frame h2:first-child {
    margin-top: 0;
}

.section-content ul {
    margin: 0.5rem 0 1rem 0;
    padding-left: 1.5rem;
}

.section-content li {
    margin-bottom: 0.5rem;
}

/* News list */
.news-list {
    list-style: none;
    padding-left: 0;
}

.news-list li {
    margin-bottom: 0.75rem;
}

/* Reusable entry layout (Education, Experience) */
.entry-item {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.entry-item:last-child {
    margin-bottom: 0;
}

.entry-logo {
    width: 1.25em;
    height: 1.25em;
    flex-shrink: 0;
    margin-top: 0.15em;
    object-fit: contain;
}

.entry-body {
    flex: 1;
    min-width: 0;
}

.entry-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
}

.entry-name {
    font-weight: 500;
}

.entry-date {
    flex-shrink: 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.entry-detail {
    margin: 0.2rem 0 0 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Awards list */
.awards-list {
    list-style: none;
    padding-left: 0;
}

.awards-list li {
    margin-bottom: 0.5rem;
}

/* Publications */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.publication-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
}

.publication-item:last-child {
    border-bottom: none;
}

.pub-authors {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.pub-title {
    font-family: var(--font-serif);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.pub-venue {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.pub-links {
    font-size: 0.9rem;
}

.pub-links a {
    margin-right: 1rem;
}

/* Footer */
.footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.name-row {
    display: flex;
    align-items: baseline;
    gap: 20px;
}

.name-email {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    .profile-layout {
        flex-direction: column;
        align-items: center;
    }

    .profile-photo {
        width: 180px;
    }

    .profile-links {
        gap: 0.75rem 1rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    .main-content {
        padding: 1.5rem 1rem 2rem;
    }
}