/* ===== CSS RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --color-primary: #2c5aa0;
    --color-primary-dark: #1e3f6b;
    --color-secondary: #17a2b8;
    --color-accent: #ff6b35;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-light: #f8f9fa;
    --color-border: #e9ecef;
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-error: #dc3545;

    /* Typography */
    --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-heading: Georgia, 'Times New Roman', serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-size-xxxl: 48px;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xxl);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
}

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

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* ===== NAVIGATION ===== */
.nav {
    position: sticky;
    top: 0;
    background-color: var(--color-background);
    box-shadow: var(--box-shadow);
    z-index: 1000;
}

.nav__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav__logo-link {
    text-decoration: none;
    color: var(--color-primary);
}

.nav__logo-text {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: bold;
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav__link {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
    background-color: rgba(44, 90, 160, 0.1);
}

.nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav__toggle-line {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    padding: var(--spacing-xxxl) 0;
    text-align: center;
}

.hero__container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xxxl);
    margin-bottom: var(--spacing-lg);
    font-weight: bold;
}

.hero__subtitle {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

/* ===== ABOUT PREVIEW SECTION ===== */
.about-preview {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-background-light);
}

.about-preview__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-preview__text {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.about-preview__placeholder {
    background-color: var(--color-border);
    height: 300px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-preview__placeholder-text {
    color: var(--color-text-light);
    font-size: var(--font-size-large);
}

/* ===== EVENTS TEASER SECTION ===== */
.events-teaser {
    padding: var(--spacing-xxxl) 0;
}

.events-teaser__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.event-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
}

.event-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.event-card__date {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 80px;
}

.event-card__day {
    font-size: var(--font-size-xl);
    font-weight: bold;
    line-height: 1;
}

.event-card__month {
    font-size: var(--font-size-small);
    text-transform: uppercase;
}

.event-card__content {
    padding: var(--spacing-lg);
    flex: 1;
}

.event-card__title {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.event-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.event-card__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.event-card__link:hover {
    color: var(--color-primary-dark);
}

/* ===== BLOG PREVIEW SECTION ===== */
.blog-preview {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-background-light);
}

.blog-preview__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.blog-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.blog-card__image {
    height: 200px;
    overflow: hidden;
}

.blog-card__placeholder {
    height: 100%;
    background-color: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-card__placeholder-text {
    color: var(--color-text-light);
    font-size: var(--font-size-large);
}

.blog-card__content {
    padding: var(--spacing-lg);
}

.blog-card__title {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    line-height: 1.4;
}

.blog-card__excerpt {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.blog-card__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.blog-card__link:hover {
    color: var(--color-primary-dark);
}

/* ===== MEMBERS FEATURED SECTION ===== */
.members-featured {
    padding: var(--spacing-xxxl) 0;
}

.members-featured__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.member-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition-normal);
}

.member-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.member-card__avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: bold;
}

.member-card__name {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.member-card__role {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.member-card__interests {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

.members-featured__cta {
    text-align: center;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--color-primary-dark);
    color: white;
    padding: var(--spacing-xxxl) 0 var(--spacing-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__title {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer__description {
    line-height: 1.6;
    opacity: 0.9;
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--spacing-sm);
}

.footer__link {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition-fast);
}

.footer__link:hover {
    opacity: 1;
    color: var(--color-secondary);
}

.footer__contact {
    line-height: 1.6;
    opacity: 0.9;
}

.footer__social {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: white;
    transition: var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

.footer__social-icon {
    font-size: var(--font-size-base);
    font-weight: bold;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer__copyright {
    opacity: 0.8;
    font-size: var(--font-size-small);
}

/* ===== PAGE HEADERS ===== */
.page-header {
    background-color: var(--color-background-light);
    padding: var(--spacing-xxxl) 0;
    text-align: center;
}

.page-header__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xxxl);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.page-header__subtitle {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== EVENTS LISTING ===== */
.events-filter {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.events-filter__controls {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.events-filter__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.events-filter__label {
    font-weight: 600;
    color: var(--color-text);
}

.events-filter__select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-background);
    font-size: var(--font-size-base);
}

.events-listing {
    padding: var(--spacing-xxxl) 0;
}

.events-listing__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .events-listing__grid {
        grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
    }
}

.event-card--large {
    flex-direction: row;
}

.event-card__meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.event-card__category {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.event-card__time {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

.event-card__location {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.event-card__actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Events Listing No Results */
.events-listing__no-results {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-background-light);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-lg) 0;
}

.events-listing__no-results p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin: 0;
}

/* ===== BLOG LISTING ===== */
.blog-listing {
    padding: var(--spacing-xxxl) 0;
}

.blog-listing__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.blog-card--large {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.blog-card__meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.blog-card__author {
    font-weight: 600;
}

.blog-card__category {
    background-color: var(--color-secondary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.pagination__pages {
    display: flex;
    gap: var(--spacing-xs);
}

.pagination__link {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition-fast);
}

.pagination__link:hover,
.pagination__link--active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination__ellipsis {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-light);
}

/* ===== MEMBERS DIRECTORY ===== */
.members-section {
    padding: var(--spacing-xxxl) 0;
}

.members-section__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.member-card--large {
    text-align: left;
    padding: var(--spacing-xl);
}

.member-card__avatar--large {
    width: 120px;
    height: 120px;
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
}

.member-card__affiliation {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.member-card__bio {
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.member-card__interests {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.member-card__interest-tag {
    background-color: var(--color-background-light);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.member-card__contact {
    margin-top: var(--spacing-md);
}

.member-card__email {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.member-card__email:hover {
    text-decoration: underline;
}

/* ===== ABOUT & CONTACT SECTIONS ===== */
.about-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-background-light);
}

.about-section__content {
    max-width: 800px;
    margin: 0 auto;
}

.about-section__text h2 {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin: var(--spacing-xl) 0 var(--spacing-lg);
}

.about-section__text h2:first-child {
    margin-top: 0;
}

.about-section__text p {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-section__research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.about-section__research-area {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
}

.about-section__research-area h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-large);
}

.about-section__timeline {
    margin: var(--spacing-xl) 0;
}

.about-section__timeline-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    align-items: start;
}

.about-section__timeline-year {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: bold;
    font-size: var(--font-size-large);
}

.about-section__timeline-content h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.about-section__timeline-content p {
    color: var(--color-text-light);
    margin: 0;
}

.contact-section {
    padding: var(--spacing-xxxl) 0;
}

.contact-section__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-form {
    background-color: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.contact-form__group {
    margin-bottom: var(--spacing-lg);
}

.contact-form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text);
}

.contact-form__input,
.contact-form__textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
}

.contact-form__input:focus,
.contact-form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(44, 90, 160, 0.1);
}

.contact-section__info {
    background-color: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
}

.contact-section__info h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.contact-section__details {
    margin-bottom: var(--spacing-xl);
}

.contact-section__detail {
    margin-bottom: var(--spacing-lg);
}

.contact-section__detail h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-section__detail p {
    color: var(--color-text-light);
    line-height: 1.6;
}

.contact-section__detail a {
    color: var(--color-primary);
    text-decoration: none;
}

.contact-section__detail a:hover {
    text-decoration: underline;
}

.contact-section__social h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.contact-section__social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-section__social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.contact-section__social-link:hover {
    background-color: var(--color-background-light);
}

.contact-section__social-icon {
    font-weight: bold;
    font-size: var(--font-size-large);
}

/* ===== ARCHIVE PAGE ===== */
.archive-filter {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.archive-filter__controls {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.archive-listing {
    padding: var(--spacing-xxxl) 0;
}

.archive-listing__year {
    margin-bottom: var(--spacing-xxxl);
}

.archive-listing__year-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xxl);
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
}

.archive-event {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.archive-event__header {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-fast);
}

.archive-event__header:hover {
    background-color: var(--color-background-light);
}

.archive-event__date {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    margin-right: var(--spacing-lg);
    min-width: 60px;
}

.archive-event__month {
    display: block;
    font-size: var(--font-size-small);
    text-transform: uppercase;
    line-height: 1;
}

.archive-event__day {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: bold;
    line-height: 1;
}

.archive-event__info {
    flex: 1;
}

.archive-event__title {
    font-size: var(--font-size-large);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.archive-event__type {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-small);
}

.archive-event__toggle {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: var(--transition-fast);
}

.archive-event__toggle:hover {
    color: var(--color-primary);
}

.archive-event__details {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    display: none;
}

.archive-event__details.active {
    display: block;
}

.archive-event__description {
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.archive-event__stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.archive-event__stat {
    background-color: var(--color-background-light);
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 600;
}

/* ===== GALLERY PAGE ===== */
.gallery-filter {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.gallery-filter__controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.gallery-filter__btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--color-border);
    background-color: var(--color-background);
    color: var(--color-text);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 600;
}

.gallery-filter__btn:hover,
.gallery-filter__btn--active {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: white;
}

.photo-gallery {
    padding: var(--spacing-xxxl) 0;
}

.photo-gallery__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.photo-item {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition-normal);
    cursor: pointer;
}

.photo-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.photo-item__image {
    height: 200px;
    overflow: hidden;
}

.photo-item__placeholder {
    height: 100%;
    background-color: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-item__placeholder-text {
    color: var(--color-text-light);
    font-size: var(--font-size-large);
}

.photo-item__caption {
    padding: var(--spacing-lg);
}

.photo-item__title {
    font-size: var(--font-size-large);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.photo-item__date {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-sm);
}

.photo-item__description {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== LIGHTBOX ===== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.lightbox.active {
    display: flex;
}

.lightbox__content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox__close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: white;
    font-size: var(--font-size-xxl);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.lightbox__image {
    max-width: 100%;
    max-height: 70vh;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.lightbox__placeholder {
    width: 100%;
    height: 400px;
    background-color: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox__placeholder-text {
    color: var(--color-text-light);
    font-size: var(--font-size-large);
}

.lightbox__caption {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

.lightbox__title {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.lightbox__description {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet (768px and up) */
@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--color-background);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-xl);
        transition: var(--transition-normal);
        box-shadow: var(--box-shadow);
    }

    .nav__menu.active {
        left: 0;
    }

    .nav__toggle {
        display: block;
    }

    .nav__toggle.active .nav__toggle-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav__toggle.active .nav__toggle-line:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle.active .nav__toggle-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero__title {
        font-size: var(--font-size-xxl);
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    .about-preview__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-preview__placeholder {
        height: 200px;
    }

    .events-teaser__grid {
        grid-template-columns: 1fr;
    }

    .blog-preview__grid {
        grid-template-columns: 1fr;
    }

    .members-featured__grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contact-section__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-section__research-areas {
        grid-template-columns: 1fr;
    }

    .about-section__timeline-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .about-section__timeline-year {
        justify-self: start;
    }

    .photo-gallery__grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

/* Mobile (480px and up) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-xxl) 0;
    }

    .hero__title {
        font-size: var(--font-size-xl);
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    .section-title {
        font-size: var(--font-size-xl);
    }

    .about-preview,
    .events-teaser,
    .blog-preview,
    .members-featured {
        padding: var(--spacing-xxl) 0;
    }

    .event-card {
        flex-direction: column;
    }

    .event-card__date {
        min-width: auto;
        padding: var(--spacing-sm);
    }

    .members-featured__grid {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: var(--spacing-xxl) 0 var(--spacing-lg);
    }

    .page-header__title {
        font-size: var(--font-size-xxl);
    }

    .page-header__subtitle {
        font-size: var(--font-size-base);
    }

    .events-filter__controls,
    .gallery-filter__controls {
        flex-direction: column;
        align-items: center;
    }

    .photo-gallery__grid {
        grid-template-columns: 1fr;
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav__link:focus,
.event-card__link:focus,
.blog-card__link:focus,
.footer__link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-text-light: #333333;
        --color-border: #000000;
    }
}

/* ===== BLOG POST STYLES ===== */

/* Article Header */
.article-header {
    background: var(--color-background-light);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.article-header__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.article-header__author,
.article-header__date,
.article-header__category,
.article-header__read-time {
    display: inline-block;
}

.article-header__category {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

.article-header__title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.article-header__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.5;
    max-width: 800px;
}

/* Article Content */
.article-content {
    padding: var(--spacing-xl) 0;
}

.article-content__wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.article {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.article__image {
    width: 100%;
    height: 300px;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.article__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
}

.article__placeholder-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: white;
}

.article__body {
    padding: var(--spacing-xl);
}

.article__lead {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    font-weight: 500;
}

.article__heading {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-lg);
    line-height: 1.3;
}

.article__body p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
    color: var(--color-text-primary);
}

.article__body ul,
.article__body ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
}

.article__body li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

/* LaTeX Math Styles */
.article__math {
    margin: var(--spacing-lg) 0;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-background-light);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--color-primary);
}

/* MathJax specific styles */
.MathJax {
    font-size: 1.1em !important;
}

.MathJax_Display {
    margin: 1.5em 0 !important;
}

/* Inline math styling */
.article__body p .MathJax {
    font-size: 1em !important;
}

/* Article Tags */
.article__tags {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    background: var(--color-background-light);
}

.article__tags-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.article__tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.article__tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-background);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
}

.article__tag:hover {
    background: var(--color-primary);
    color: white;
}

/* Article Author */
.article__author {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.article__author-avatar {
    flex-shrink: 0;
}

.article__author-placeholder {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.article__author-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.article__author-bio {
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Article Sidebar */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.article-sidebar__section {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.article-sidebar__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

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

.article-sidebar__item {
    margin-bottom: var(--spacing-sm);
}

.article-sidebar__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.article-sidebar__link:hover {
    color: var(--color-primary);
}

.article-sidebar__text {
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.article-sidebar__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.article-sidebar__input {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.article-sidebar__button {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.article-sidebar__button:hover {
    background: var(--color-primary-dark);
}

/* Responsive Design for Blog Post */
@media (max-width: 1024px) {
    .article-content__wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .article-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .article-header__title {
        font-size: var(--font-size-xl);
    }

    .article-header__subtitle {
        font-size: var(--font-size-md);
    }

    .article__body {
        padding: var(--spacing-lg);
    }

    .article__heading {
        font-size: var(--font-size-lg);
    }

    .article__lead {
        font-size: var(--font-size-md);
    }

    .article__math {
        padding: var(--spacing-sm);
        margin: var(--spacing-md) 0;
    }

    .article__author {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .article-header__meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .article__body {
        padding: var(--spacing-md);
    }

    .article__tags-list {
        justify-content: center;
    }
}

/* ===== EVENT DETAIL PAGE STYLES ===== */

/* Event Header */
.event-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.event-header__breadcrumb {
    margin-bottom: var(--spacing-lg);
}

.event-header__breadcrumb-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color 0.3s ease;
}

.event-header__breadcrumb-link:hover {
    color: white;
}

.event-header__content {
    max-width: 800px;
}

.event-header__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.event-header__category,
.event-header__date,
.event-header__time {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.event-header__title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.event-header__subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.5;
}

.event-header__location {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-md);
}

.event-header__icon {
    width: 20px;
    height: 20px;
}

/* Event Content Layout */
.event-content {
    margin-bottom: var(--spacing-xxl);
}

.event-content__layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-xl);
    align-items: start;
}

.event-content__main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.event-content__sidebar {
    position: sticky;
    top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Event Sections */
.event-section {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.event-section__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--spacing-sm);
}

.event-section__content {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.event-section__content p {
    margin-bottom: var(--spacing-md);
}

.event-section__content p:last-child {
    margin-bottom: 0;
}

/* Learning Outcomes */
.learning-outcomes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.learning-outcome {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.learning-outcome__icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.learning-outcome__content h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.learning-outcome__content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Prerequisites */
.prerequisites {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.prerequisite {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.prerequisite__badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    align-self: flex-start;
}

.prerequisite__badge--required {
    background: var(--color-error-light);
    color: var(--color-error);
}

.prerequisite__badge--recommended {
    background: var(--color-warning-light);
    color: var(--color-warning);
}

.prerequisite__badge--optional {
    background: var(--color-success-light);
    color: var(--color-success);
}

.prerequisite__content h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.prerequisite__content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Checklist */
.checklist {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checklist__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.checklist__icon {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

.checklist__item span {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
}

/* Agenda */
.agenda {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.agenda__item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.agenda__item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.agenda__time {
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    text-align: center;
    padding: var(--spacing-sm);
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    align-self: start;
}

.agenda__content h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.agenda__content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Registration Card */
.registration-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    position: sticky;
    top: var(--spacing-lg);
}

.registration-card__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.registration-card__header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.registration-card__price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.registration-card__price-free {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--color-success);
}

.registration-card__price-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.registration-card__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.registration-card__seats {
    text-align: center;
}

.registration-card__seats-info {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.registration-card__seats-progress {
    width: 100%;
    height: 8px;
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.registration-card__seats-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success) 0%, var(--color-primary) 100%);
    border-radius: var(--border-radius);
    transition: width 0.3s ease;
}

.registration-card__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.registration-card__action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
    cursor: pointer;
}

.registration-card__action:hover {
    background: var(--color-background-light);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
}

.registration-card__action-icon {
    width: 16px;
    height: 16px;
}

/* Info Card */
.info-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.info-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--spacing-sm);
}

.info-card__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color 0.2s ease;
}

.info-item:hover {
    background: var(--color-background-light);
}

.info-item__icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.info-item__content {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.info-item__content strong {
    color: var(--color-text-primary);
}

/* Speakers Card */
.speakers-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.speakers-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--spacing-sm);
}

.speakers-card__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.speaker {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-background-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.speaker__avatar {
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-md);
    flex-shrink: 0;
}

.speaker__info h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.speaker__title {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.speaker__expertise {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Related Events */
.related-events {
    background: var(--color-background-light);
    padding: var(--spacing-xxl) 0;
    margin-top: var(--spacing-xxl);
}

.related-events__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.related-event {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.related-event:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.related-event__date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    padding: var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    text-align: center;
    flex-shrink: 0;
}

.related-event__day {
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1;
}

.related-event__month {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.related-event__content {
    flex: 1;
}

.related-event__meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.related-event__category,
.related-event__time {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    background: var(--color-background-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

.related-event__content h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    line-height: 1.3;
}

.related-event__content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.related-event__link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

.related-event__link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .event-content__layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .event-content__sidebar {
        position: static;
        order: -1;
    }

    .learning-outcomes {
        grid-template-columns: 1fr;
    }

    .agenda__item {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .agenda__time {
        text-align: left;
        align-self: stretch;
    }
}

@media (max-width: 768px) {
    .event-header {
        padding: var(--spacing-lg) 0;
    }

    .event-header__title {
        font-size: var(--font-size-xl);
    }

    .event-header__subtitle {
        font-size: var(--font-size-md);
    }

    .event-header__meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .event-section {
        padding: var(--spacing-lg);
    }

    .learning-outcome {
        flex-direction: column;
        text-align: center;
    }

    .prerequisite {
        flex-direction: column;
        text-align: center;
    }

    .registration-card,
    .info-card,
    .speakers-card {
        padding: var(--spacing-lg);
    }

    .related-events__grid {
        grid-template-columns: 1fr;
    }

    .related-event {
        flex-direction: column;
        text-align: center;
    }

    .related-event__date {
        align-self: center;
    }
}

@media (max-width: 480px) {
    .event-header__title {
        font-size: var(--font-size-lg);
    }

    .event-section {
        padding: var(--spacing-md);
    }

    .registration-card,
    .info-card,
    .speakers-card {
        padding: var(--spacing-md);
    }

    .checklist__item,
    .prerequisite,
    .learning-outcome {
        padding: var(--spacing-sm);
    }
}