/* ============================================
   Brutalist Monochrome Design
   Color Scheme: Black + White + Electric Blue accent
   Style: Raw typography, stark contrasts
   ============================================ */

:root {
    --color-black: #0a0a0a;
    --color-white: #ffffff;
    --color-gray: #666666;
    --color-gray-light: #e5e5e5;
    --color-accent: #0066ff;
    --font-display: 'Bebas Neue', Impact, sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
}

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

::selection {
    background: var(--color-accent);
    color: var(--color-white);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    background: var(--color-white);
    color: var(--color-black);
    line-height: 1.5;
    font-size: 14px;
}

/* Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 2rem;
    background: var(--color-black);
    color: var(--color-white);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
}

/* Navigation */
.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--color-black);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-black);
    text-decoration: none;
    letter-spacing: 0.05em;
}

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

.nav-links a {
    color: var(--color-black);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: color 0.2s ease;
}

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

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    padding: 6rem 2rem 4rem;
    border-bottom: 2px solid var(--color-black);
    min-height: 60vh;
    position: relative;
    overflow: hidden;
}

.hero-content h1 {
    font-family: var(--font-display);
    font-size: clamp(4rem, 15vw, 12rem);
    line-height: 0.9;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
}

.hero-line {
    display: block;
}

.hero-subtitle {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.hero-subtitle .label {
    color: var(--color-gray);
    min-width: 60px;
}

.hero-subtitle .value {
    color: var(--color-black);
    letter-spacing: 0.05em;
}

.hero-decoration {
    font-family: var(--font-display);
    font-size: 20rem;
    color: var(--color-gray-light);
    line-height: 1;
    user-select: none;
    position: absolute;
    right: 2rem;
    bottom: -2rem;
    opacity: 0.3;
}

/* Sections */
.section {
    padding: 4rem 2rem;
    border-bottom: 2px solid var(--color-black);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-gray-light);
}

.section-label {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 0.05em;
}

.section-number {
    font-size: 0.85rem;
    color: var(--color-gray);
}

/* Info Section */
.info-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.info-main .large-text {
    font-size: 1.5rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.info-main p {
    color: var(--color-gray);
    line-height: 1.8;
}

.info-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat {
    border-left: 3px solid var(--color-accent);
    padding-left: 1rem;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 3rem;
    display: block;
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.1em;
}

/* Work Section */
.work-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

.work-item {
    padding: 2rem;
    border: 1px solid var(--color-black);
    margin: -1px 0 0 -1px;
    transition: background 0.2s ease;
}

.work-item:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.work-item:hover .work-status {
    color: var(--color-accent);
}

.work-num {
    font-size: 0.75rem;
    color: var(--color-gray);
    display: block;
    margin-bottom: 1rem;
}

.work-item h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.02em;
    margin-bottom: 0.75rem;
}

.work-item p {
    font-size: 0.85rem;
    color: var(--color-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.work-item:hover p {
    color: var(--color-gray-light);
}

.work-status {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

/* Papers Section */
.papers-list {
    display: flex;
    flex-direction: column;
}

.paper-item {
    display: grid;
    grid-template-columns: 80px 1fr 200px;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-gray-light);
    text-decoration: none;
    color: var(--color-black);
    transition: all 0.2s ease;
}

.paper-item:hover {
    background: var(--color-black);
    color: var(--color-white);
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: -1rem;
    margin-right: -1rem;
}

.paper-year {
    font-family: var(--font-display);
    font-size: 1.25rem;
}

.paper-title {
    font-size: 0.95rem;
    line-height: 1.5;
}

.paper-journal {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.05em;
    text-align: right;
}

.paper-item:hover .paper-journal {
    color: var(--color-accent);
}

.view-all {
    display: inline-block;
    margin-top: 2rem;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.view-all:hover {
    color: var(--color-black);
}

/* Teaching Section */
.teaching-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.course {
    display: grid;
    grid-template-columns: 120px 1fr 120px;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-gray-light);
    align-items: start;
}

.course-code {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.05em;
    color: var(--color-accent);
}

.course-info h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.course-info p {
    font-size: 0.85rem;
    color: var(--color-gray);
}

.course-term {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.05em;
    text-align: right;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.email-link {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-black);
    text-decoration: none;
    display: block;
    margin-bottom: 2rem;
    transition: color 0.2s ease;
    word-break: break-all;
}

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

.address {
    font-size: 0.9rem;
    color: var(--color-gray);
    line-height: 1.8;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.link-item {
    color: var(--color-black);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

/* Footer */
.footer {
    padding: 2rem;
    background: var(--color-black);
    color: var(--color-white);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding: 4rem 2rem 3rem;
    }

    .hero-decoration {
        position: relative;
        font-size: 8rem;
        right: 0;
        bottom: 0;
        text-align: right;
        margin-top: 2rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .info-stats {
        flex-direction: row;
        gap: 3rem;
    }

    .work-grid {
        grid-template-columns: 1fr;
    }

    .paper-item {
        grid-template-columns: 60px 1fr;
        gap: 1rem;
    }

    .paper-journal {
        grid-column: 2;
        text-align: left;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .email-link {
        font-size: 1.75rem;
    }
}

@media (max-width: 600px) {
    .top-bar {
        padding: 0.5rem 1rem;
        font-size: 0.65rem;
    }

    .main-nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .section {
        padding: 3rem 1rem;
    }

    .hero {
        padding: 3rem 1rem 2rem;
    }

    .hero-content h1 {
        font-size: 3.5rem;
    }

    .section-label {
        font-size: 1.5rem;
    }

    .info-main .large-text {
        font-size: 1.15rem;
    }

    .info-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .course {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .course-term {
        text-align: left;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}