@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400&display=swap');

:root {
    --color-cream: #faf7f2;
    --color-cream-dark: #f5f0e8;
    --color-ink: #2c2416;
    --color-ink-light: #4a3f2f;
    --color-accent: #6b5c4c;
    --color-border: #3d3425;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-cream);
    font-family: 'Source Serif 4', Georgia, serif;
    color: var(--color-ink);
    line-height: 1.7;
    font-size: 17px;
}

h1, h2, h3, h4, h5 {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    line-height: 1.3;
}

/* Navigation */
.navbar {
    background-color: var(--color-ink);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0.875rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-family: 'Libre Baskerville', serif;
    font-size: 1.1rem;
    color: var(--color-cream);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.navbar-links {
    display: flex;
    gap: 2rem;
}

.navbar-link {
    color: var(--color-cream);
    text-decoration: none;
    font-size: 0.875rem;
    opacity: 0.85;
    transition: opacity 0.2s;
}

.navbar-link:hover {
    opacity: 1;
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-cream);
    cursor: pointer;
}

@media (max-width: 768px) {
    .navbar-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-ink);
        flex-direction: column;
        padding: 1rem 1.5rem;
        gap: 0.75rem;
        border-top: 1px solid var(--color-border);
    }

    .navbar-links.show {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* Container */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero Section */
.hero {
    padding-top: 7rem;
    padding-bottom: 4rem;
    border-bottom: 2px solid var(--color-border);
    text-align: center;
    background: linear-gradient(180deg, var(--color-cream-dark) 0%, var(--color-cream) 100%);
    position: relative;
    overflow: hidden;
    min-height: 320px;
}

.hero-ascii-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.hero-ascii-bg pre {
    position: absolute;
    font-family: ui-monospace, 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Source Code Pro', 'Courier New', Consolas, monospace;
    font-size: 14px;
    line-height: 1.4;
    color: #2c2416;
    opacity: 0.4;
    white-space: pre;
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    user-select: none;
    letter-spacing: 0;
    font-variant-ligatures: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: normal;
}

.hero-ascii-bg pre.ascii-left {
    font-size: 16px;
}

.hero-ascii-bg pre.ascii-right {
    font-size: 15px;
}

@media (max-width: 1200px) {
    .hero-ascii-bg pre {
        opacity: 0.1;
        font-size: 12px;
    }
    .hero-ascii-bg pre.ascii-left {
        left: 2% !important;
        font-size: 13px;
    }
    .hero-ascii-bg pre.ascii-right {
        right: 2% !important;
        font-size: 12px;
    }
}

@media (max-width: 900px) {
    .hero-ascii-bg pre {
        display: none;
    }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 2.75rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 1.875rem;
    }
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    font-size: 1rem;
    color: var(--color-ink-light);
}

.hero-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Sections */
section {
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-border);
}

.section-title {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-border);
    display: inline-block;
}

.section-intro p {
    margin-bottom: 1.25rem;
    text-align: justify;
}

/* News Section */
#news {
    padding: 2rem 0;
    background-color: var(--color-cream-dark);
}

#news .content-box {
    background-color: transparent;
    border: none;
    padding: 0;
    margin-bottom: 0;
}

.news-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.news-list li {
    padding: 0.75rem 0 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border-left: 3px solid var(--color-accent);
    font-size: 1.05rem;
    line-height: 1.6;
}

.news-list li:last-child {
    margin-bottom: 0;
}

.news-date {
    display: inline-block;
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    color: var(--color-ink);
}

.news-list a {
    font-weight: 600;
}

/* Content Cards/Boxes */
.content-box {
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: var(--color-cream);
}

.content-box h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.content-box p {
    margin-bottom: 0.75rem;
}

.content-box ul {
    margin-left: 1.25rem;
    margin-bottom: 1rem;
}

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

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.data-table th,
.data-table td {
    border: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    text-align: left;
}

.data-table th {
    background-color: var(--color-ink);
    color: var(--color-cream);
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:nth-child(even) {
    background-color: var(--color-cream-dark);
}

/* Profile Cards (Organizers) */
.profile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.profile-card {
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    background-color: var(--color-cream);
}

.profile-header {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.profile-image {
    width: 80px;
    height: 80px;
    border: 1px solid var(--color-border);
    background-color: var(--color-cream-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 2rem;
    color: var(--color-accent);
}

.profile-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.profile-info p {
    font-size: 0.875rem;
    color: var(--color-ink-light);
    line-height: 1.4;
}

.profile-bio {
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Topics List */
.topics-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.topics-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    padding-left: 1.5rem;
    position: relative;
}

.topics-list li::before {
    content: "◆";
    position: absolute;
    left: 0;
    font-size: 0.5rem;
    top: 1.05rem;
    color: var(--color-accent);
}

.topics-list li:last-child {
    border-bottom: none;
}

/* Subsection */
.subsection {
    margin-top: 2rem;
}

.subsection-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-ink);
}

/* Links */
a {
    color: var(--color-ink);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

/* Footer */
footer {
    background-color: var(--color-ink);
    color: var(--color-cream);
    padding: 2rem 0;
    margin-top: 0;
}

footer a {
    color: var(--color-cream);
    opacity: 0.85;
}

footer a:hover {
    opacity: 1;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

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

.footer-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--color-border);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--color-ink);
    color: var(--color-cream);
}

.btn-primary:hover {
    background-color: var(--color-ink-light);
    color: var(--color-cream);
}

/* Utility */
.text-muted {
    color: var(--color-ink-light);
}

.text-small {
    font-size: 0.875rem;
}

.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }

/* Lucide icons */
[data-lucide] {
    width: 18px;
    height: 18px;
}

/* Schedule highlight */
.schedule-break {
    background-color: var(--color-cream-dark);
    font-style: italic;
}

/* Organizer compact grid */
.organizer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.organizer-card {
    border: 1px solid var(--color-border);
    padding: 1.25rem;
    background-color: var(--color-cream);
    text-align: center;
}

.organizer-card .profile-image {
    width: 70px;
    height: 70px;
    margin: 0 auto 0.75rem;
}

.organizer-card h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.organizer-card p {
    font-size: 0.8rem;
    color: var(--color-ink-light);
    line-height: 1.4;
}

/* Invited Speaker Cards - Two Column Layout */
.speaker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

@media (max-width: 480px) {
    .speaker-grid {
        grid-template-columns: 1fr;
    }
}

.speaker-card {
    border: 1px solid var(--color-border);
    background-color: var(--color-cream);
    display: grid;
    grid-template-columns: 120px 1fr;
    min-height: 160px;
}

@media (max-width: 480px) {
    .speaker-card {
        grid-template-columns: 100px 1fr;
    }
}

.speaker-image-col {
    border-right: 1px solid var(--color-border);
    background-color: var(--color-cream-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.speaker-image-col img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.speaker-image-col .speaker-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-accent);
}

.speaker-image-col .speaker-placeholder i {
    width: 48px;
    height: 48px;
}

.speaker-info-col {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.speaker-website-link {
    position: absolute;
    top: 1.25rem;
    right: 1rem;
    color: var(--color-accent);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
    line-height: 1;
}

.speaker-website-link:hover {
    opacity: 1;
    color: var(--color-ink);
}

.speaker-website-link [data-lucide] {
    width: 20px;
    height: 20px;
}

.speaker-info-col h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.speaker-info-col .affiliation {
    font-size: 0.875rem;
    color: var(--color-ink-light);
    line-height: 1.4;
    margin-bottom: 0.75rem;
}

.speaker-bio-toggle {
    background: none;
    border: none;
    color: var(--color-ink);
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.875rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--color-border);
    margin-top: auto;
    text-align: left;
}

.speaker-bio-toggle:hover {
    color: var(--color-accent);
}

.speaker-bio-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.speaker-bio-content.expanded {
    max-height: 500px;
}

.speaker-bio-content p {
    padding-top: 0.75rem;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-ink-light);
    margin: 0;
}

.chevron-icon {
    transition: transform 0.3s ease;
    width: 16px;
    height: 16px;
}

.chevron-icon.expanded {
    transform: rotate(180deg);
}

/* Program Committee */
.committee-list {
    column-count: 2;
    column-gap: 2rem;
    margin-top: 1.5rem;
}

@media (max-width: 600px) {
    .committee-list {
        column-count: 1;
    }
}

.committee-member {
    break-inside: avoid;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--color-border);
}

.committee-member:last-child {
    border-bottom: none;
}

.committee-member .name {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: 0.95rem;
}

.committee-member .role {
    font-size: 0.825rem;
    color: var(--color-ink-light);
    line-height: 1.4;
}