/* CSS Variables for Color Theme - mirrors AlcHepNet */
:root {
    --navbar-bg-color: #80abc1;
    --dropdown-bg-color: #2e5568;
    --title-color: #3f677b;
    --btn-primary-bg: #80abc1;
    --btn-primary-hover: #0056b3;
    --footer-bg-color: #80abc1;
    --accent-color: #8b0000;
}

/* GLOBAL STYLES
-------------------------------------------------- */
strong {
    font-weight: 500;
}

body {
    color: #000;
    padding-top: 0;
    padding-bottom: 0;
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: Arial, Helvetica, sans-serif;
}

main {
    flex: 1;
    padding: 0;
}

/* NAVBAR STYLES
-------------------------------------------------- */
.navbar {
    border-bottom: none;
    padding: 0;
    flex-direction: column !important;
    align-items: stretch !important;
    margin-bottom: 0;
    position: sticky;
    top: 0;
    z-index: 1030;
    background-color: #ffffff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

/* Logo Row (centered) */
.logo-row {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    margin-bottom: 0;
    border-bottom: 1px solid #dee2e6;
    background-color: #ffffff;
}

.navbar-brand {
    margin: 0;
    flex-shrink: 0;
}

.navbar-brand > img {
    max-height: 60px;
    width: auto;
}

/* Navigation row (teal bar spans full page; nav links aligned to card width) */
.nav-row {
    background-color: var(--navbar-bg-color);
    padding: 0;
    margin: 0;
    position: relative;
}

.nav-row .nav-inner {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    padding-left: 0;
    padding-right: 0;
}

.nav-row .navbar-collapse {
    flex: 1 1 auto;
}

.navbar-nav {
    flex-direction: row !important;
    margin: 0 auto;
    justify-content: center;
    padding: 0;
}

.navbar-nav .nav-item {
    margin: 0 1rem;
}

.navbar-nav .nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: #ffffff !important;
    padding: 0.75rem 1rem;
    letter-spacing: 0.02em;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    outline: none;
    border: none;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: #ffffff !important;
    background-color: var(--dropdown-bg-color);
    text-decoration: none;
}

.navbar-nav .nav-link.active {
    color: #ffffff !important;
    background-color: var(--dropdown-bg-color);
    font-weight: 600;
}

.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.6);
    padding: 0.35rem 0.6rem;
    align-self: center;
    margin: 0.4rem 0;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* HEADINGS & TYPOGRAPHY
-------------------------------------------------- */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    margin-bottom: 1rem;
    color: var(--title-color);
}

.lead {
    font-size: 1.15rem;
    font-weight: 300;
    line-height: 1.6;
}

/* MARKETING CONTAINER (main content card)
-------------------------------------------------- */
.container.marketing {
    background: #ffffff;
    padding: 3rem 2.5rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.marketing .featurette-heading {
    font-size: 2.25rem;
    font-weight: 500;
    color: var(--title-color);
    margin-bottom: 1rem;
}

.marketing h3 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--title-color);
}

.marketing p:not(.lead) {
    font-size: 1.05rem;
    line-height: 1.6;
}

.marketing img {
    display: block;
    margin: 1.5rem auto;
    max-width: 100%;
    height: auto;
}

.featurette-divider {
    margin: 2.5rem 0;
    border-top: 1px solid #e0e0e0;
}

/* Hero image (top banner under navbar) */
.hero-banner {
    text-align: center;
    padding: 2rem 1rem 0 1rem;
}

.hero-banner img {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

/* NEWS CARD
-------------------------------------------------- */
.news-card {
    background: #ffffff;
    border-left: 4px solid var(--accent-color);
    padding: 1.25rem 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.news-card:first-of-type {
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.news-card:last-of-type {
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
    margin-bottom: 1.5rem;
}

.news-card h3 {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.news-card p {
    margin-bottom: 0.5rem;
}

.news-card .news-date {
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.news-card ul {
    margin-bottom: 0.5rem;
}

.news-card a.agenda-link {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.news-card a.agenda-link:hover {
    text-decoration: underline;
}

.more-link {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.more-link:hover {
    text-decoration: underline;
}

/* TEAM SECTION
-------------------------------------------------- */
.team-group {
    margin-bottom: 1.5rem;
}

.team-group h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--title-color);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.team-group ul {
    padding-left: 1.5rem;
}

.team-group li {
    line-height: 1.6;
}

/* PUBLICATIONS
-------------------------------------------------- */
.pub-list {
    list-style: none;
    padding-left: 0;
}

.pub-list > li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.5;
}

.pub-list > li::before {
    content: "•";
    color: var(--title-color);
    position: absolute;
    left: 0.25rem;
    font-weight: bold;
}

.pub-list a {
    color: #0056b3;
    word-break: break-word;
}

/* ACKNOWLEDGEMENTS LOGO STRIP
-------------------------------------------------- */
.ack-logos {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2rem;
    padding: 1rem 0;
}

.ack-logos a {
    display: inline-flex;
    align-items: center;
    transition: opacity 0.2s ease;
}

.ack-logos a:hover {
    opacity: 0.7;
}

.ack-logos img {
    height: 60px;
    width: auto;
    margin: 0;
}

/* CONTACT
-------------------------------------------------- */
.contact-block a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* READ MORE TOGGLE
-------------------------------------------------- */
.readMore {
    display: none;
    color: var(--accent-color);
    cursor: pointer;
    font-weight: 500;
}

.moreText {
    display: inline;
}

/* FOOTER STYLES
-------------------------------------------------- */
.footer {
    background-color: var(--footer-bg-color);
    border-top: 1px solid #dee2e6;
    padding: 3rem 0 2rem 0;
    margin-top: auto;
    color: #ffffff;
}

.footer h5 {
    color: #ffffff;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer ul {
    list-style: none;
    padding-left: 0;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.footer hr {
    border-color: rgba(255, 255, 255, 0.3);
}

.footer .copyright {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* BACK TO TOP
-------------------------------------------------- */
.back-top-tag {
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    background-color: var(--navbar-bg-color);
    color: #ffffff;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    z-index: 999;
}

.back-top-tag a {
    color: #ffffff;
    text-decoration: none;
}

.back-top-tag a:hover {
    text-decoration: underline;
}

/* RESPONSIVE DESIGN
-------------------------------------------------- */
@media (min-width: 40em) {
    .marketing .featurette-heading {
        font-size: 2.5rem;
    }
}

@media (max-width: 992px) {
    .container.marketing {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 768px) {
    .logo-row {
        padding: 0.75rem 0.5rem;
    }

    .navbar-brand > img {
        max-height: 50px;
    }

    .nav-row {
        padding: 0;
        flex-wrap: wrap;
    }

    .nav-row .navbar-collapse {
        flex-basis: 100%;
    }

    .navbar-nav {
        flex-direction: column !important;
        margin: 0;
        width: 100%;
    }

    .navbar-nav .nav-item {
        margin-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
    }

    .marketing .featurette-heading {
        font-size: 1.75rem;
    }

    .ack-logos {
        gap: 1.25rem;
        justify-content: center;
    }

    .ack-logos img {
        height: 45px;
    }

    .container.marketing {
        padding: 1.5rem 1rem;
    }

    /* Show Read More toggle on mobile */
    .readMore {
        display: inline;
    }
    .moreText {
        display: none;
    }
}