/* ===== CSS Variables ===== */
:root {
    --green: #209D50;
    --green-dark: #1a8542;
    --dark-grey: #3d3d3d;
    --bath-blue: #209D50;
    --bath-blue-light: #209D50;
    --accent: #209D50;
    --text: #000000;
    --text-light: #000000;
    --bg: #E1DFD9;
    --bg-light: #E1DFD9;
    --border: #e0e4e8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --radius: 8px;
    --max-width: min(95vw, 1700px);
    --font: 'EB Garamond', Georgia, "Times New Roman", serif;
    --font-serif: 'EB Garamond', Georgia, "Times New Roman", serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===== Navigation ===== */
.navbar {
    background: var(--bg);
    padding: 2px 0 2px 8px;
    border-bottom: 1px solid #999;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.navbar .container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0;
    margin-left: -8px;
    height: 46px;
}

.navbar .logo img {
    height: 100%;
    width: auto;
    max-height: 36px;
}

.navbar .logo:hover {
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 4px;
    margin-left: auto;
    padding-right: 0;
    margin-right: 0;
}

.nav-links a {
    color: var(--text);
    font-family: var(--font-serif);
    padding: 12px 16px;
    display: block;
    font-size: 1.4rem;
    transition: color 0.2s, background 0.2s;
    border-radius: 4px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--green);
    background: transparent;
    text-decoration: none;
}

/* Dropdown menu */
.has-dropdown {
    position: relative;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #E1DFD9;
    list-style: none;
    min-width: 220px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 0 0 var(--radius) var(--radius);
    z-index: 200;
    padding: 4px 0;
}

.has-dropdown:hover .dropdown {
    display: block;
}

.dropdown li a {
    padding: 10px 20px;
    font-size: 1.2rem;
    white-space: nowrap;
    color: var(--text);
}

.dropdown li a:hover {
    color: var(--green);
    background: rgba(0, 0, 0, 0.04);
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* ===== Home Page — Welcome Section ===== */
.home-welcome {
    background: var(--bg-light);
    padding: 60px 24px;
}

.welcome-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.welcome-text {
    padding-left: 40px;
    text-align: right;
}

.welcome-logo img {
    max-width: 540px;
    width: 100%;
    margin: 0 auto;
}

.welcome-text h1 {
    font-family: var(--font-serif);
    font-size: 50px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.3;
}

.welcome-text p {
    font-family: var(--font-serif);
    font-size: 40px;
    color: var(--text);
    line-height: 1.3;
}

/* ===== Home Page — About Section ===== */
.home-about {
    background: var(--green);
    padding: 36px 24px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: center;
}

.about-heading h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    color: #fff;
    line-height: 1.2;
    text-align: center;
}

.about-text p {
    font-family: var(--font-serif);
    font-size: 40px;
    color: #fff;
    line-height: 1.15;
    text-align: center;
}

/* ===== Home Page — Funders Section ===== */
.home-funders {
    background: var(--bg);
    padding: 48px 24px;
    text-align: center;
}

.home-funders h2 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--green);
    margin-bottom: 24px;
}

.funders-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.funders-logos a {
    display: block;
}

.funders-logos img {
    max-height: 100px;
    width: auto;
    object-fit: contain;
    background: #fff;
    padding: 10px 16px;
    border-radius: var(--radius);
}

/* Back to Home section */
.back-section {
    background: var(--bg-light);
    padding: 10px 24px 20px;
    text-align: center;
}

.btn-back {
    display: inline-block;
    background: var(--green);
    color: #fff;
    padding: 12px 34px;
    border-radius: 24px;
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s;
}

.btn-back:hover {
    background: var(--green-dark);
    text-decoration: none;
}

/* ===== Full-screen Cover Hero (legacy) ===== */
.cover-hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    /*
        TODO: Replace with your own image.
        Put your image in images/ and update the url() below.
        A microscopy, lab, or science image works well.
    */
    background: url('../images/hero-bg.jpg') center center / cover no-repeat;
    background-color: #1a1a2e;
}

.cover-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.cover-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    padding: 24px;
}

.cover-logo {
    height: 80px;
    width: auto;
    margin-bottom: 20px;
}

.cover-title {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.cover-tagline {
    font-size: 1.3rem;
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-bottom: 6px;
}

.cover-subtitle {
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.7;
    letter-spacing: 1px;
    margin-bottom: 48px;
}

/* Cover page navigation */
.cover-nav {
    margin-top: 16px;
}

.cover-nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 0;
}

.cover-nav-links a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 10px 18px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    transition: all 0.3s;
}

.cover-nav-links a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
}

/* ===== Legacy Hero (kept for other pages if needed) ===== */
.hero {
    background: linear-gradient(135deg, var(--bath-blue) 0%, var(--bath-blue-light) 100%);
    color: #fff;
    padding: 80px 24px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 650px;
    margin: 0 auto 24px;
}

.hero .btn {
    display: inline-block;
    background: #fff;
    color: var(--bath-blue);
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.hero .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

/* ===== Sections ===== */
.section {
    padding: 36px 24px 64px;
}

.section.alt {
    background: var(--bg-light);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    font-size: 1.8rem;
    color: #000;
    margin-bottom: 8px;
}

.section-subtitle {
    color: #000;
    margin-bottom: 72px;
    font-size: 1.3rem;
}

/* ===== Research Areas ===== */
.research-area {
    margin-bottom: 0;
    padding-bottom: 32px;
    padding-top: 32px;
    border-top: 1px solid #999;
    scroll-margin-top: 60px;
}

.research-area:last-child {
    padding-bottom: 32px;
    border-bottom: 1px solid #999;
}

.research-area h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--green);
    margin-bottom: 12px;
    margin-left: 0;
}

.research-area p {
    font-size: 1.4rem;
    line-height: 1.6;
    text-align: justify;
}

.research-content {
    display: flex;
    gap: 48px;
    align-items: flex-start;
    margin: 0;
}

.research-content .research-text {
    flex: 1;
}

.research-content p {
    text-align: justify;
    margin-bottom: 16px;
}

.research-img {
    width: 320px;
    flex-shrink: 0;
    border-radius: var(--radius);
    background: #ffffff;
    padding: 4px;
    object-fit: contain;
    align-self: flex-start;
    margin-top: 4px;
}

.research-wrap {
    overflow: hidden;
}

.research-wrap p {
    margin-bottom: 16px;
}

.research-img-float {
    float: left;
    width: 320px;
    border-radius: var(--radius);
    background: #ffffff;
    padding: 4px;
    margin: 4px 48px 16px 0;
}

/* ===== Cards (News, Previews) ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.card img {
    flex-shrink: 0;
}

.card p:last-child {
    margin-top: auto;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.card img {
    width: 100%;
    max-height: 250px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 16px;
    cursor: pointer;
    transition: transform 0.3s;
}

.card img.no-expand {
    cursor: default;
}

.card img.expanded {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: auto;
    max-width: 90vw;
    max-height: 90vh;
    z-index: 1000;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.img-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
}

.card .date {
    font-size: inherit;
    color: var(--green);
    text-transform: uppercase;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.15);
}

.card h3 {
    font-size: 1.3rem;
    white-space: normal;
    margin-bottom: 8px;
    color: #000;
}

.card p {
    color: var(--text-light);
    font-size: 1.1rem;
    text-align: justify;
}

/* ===== Paper List ===== */
.paper-list {
    list-style: none;
    padding-left: 0;
}

.paper-item:first-child {
    padding-top: 0;
}

.paper-item:first-child .date {
    top: 0;
}

.paper-item {
    padding: 16px 0 16px 70px;
    border-bottom: none;
    position: relative;
    line-height: 1.6;
    color: #000;
    font-size: 1.3rem;
}

.paper-item .date {
    position: absolute;
    left: 0;
    top: 16px;
    display: block;
    color: var(--green);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1;
    transform: translateY(3.5px);
}

.paper-title {
    display: inline;
    font-size: 1.3rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 4px;
    line-height: 1.6;
    text-decoration: none;
}

.paper-title:hover {
    color: var(--accent);
    text-decoration: underline;
}

.paper-item strong em {
    color: var(--green);
}

/* ===== Team Member Cards ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 28px;
}

.member-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.member-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.member-card .photo {
    width: 200px;
    height: 200px;
    border-radius: var(--radius);
    background: var(--dark-grey);
    overflow: hidden;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.8rem;
    margin: 0 auto 16px;
}

.member-card .photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.member-card h3 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    margin-bottom: 4px;
    color: var(--bath-blue);
    line-height: 1.3;
    min-height: 2.6em;
}

.member-card .role {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: #000;
    margin-bottom: 0;
    line-height: 1.3;
    min-height: 2.6em;
}

.member-details {
    display: none;
    text-align: left;
    margin-top: 0;
    padding-top: 0;
}

.member-card.expanded {
    grid-column: 1 / -1;
}

.member-card.expanded > .photo,
.member-card.expanded > h3,
.member-card.expanded > .role {
    display: none;
}

.member-card.expanded .member-details {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.member-details .detail-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.member-details .detail-photo {
    width: 220px;
    min-width: 220px;
    height: 220px;
    border-radius: var(--radius);
    overflow: hidden;
    border: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8rem;
    background: var(--dark-grey);
}

.member-details .detail-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.member-details .detail-name {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    margin-bottom: 4px;
    color: var(--bath-blue);
    margin-top: 12px;
    text-align: center;
}

.member-details .detail-role {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: #000;
    margin-bottom: 0;
    text-align: center;
}

.member-details .detail-text {
    flex: 1;
}

.member-card .bio {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.member-card .email {
    font-size: 0.95rem;
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info h3 {
    color: var(--bath-blue);
    margin-bottom: 16px;
    font-size: 1.3rem;
}

.contact-info p {
    margin-bottom: 12px;
    color: var(--text-light);
    font-size: 1.3rem;
}

.contact-info a {
    color: var(--accent);
}

.map-container {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.map-container iframe {
    width: 100%;
    height: 350px;
    border: 0;
}

/* ===== Footer ===== */
.footer {
    background: var(--green);
    color: #000;
    padding: 20px 24px;
    margin-top: auto;
    font-size: 1.2rem;
    text-align: center;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer a {
    color: #000;
}

.footer a:hover {
    color: #fff;
}

.footer-social-label {
    font-size: 1.3rem;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.footer-social-icons {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-bottom: 8px;
}

.footer-social-icons a {
    display: flex;
    align-items: center;
}

.footer-social-icons svg {
    width: 28px;
    height: 28px;
    fill: #000;
    transition: fill 0.2s;
}

.footer-social-icons a:hover svg {
    fill: #fff;
}

.footer-info {
    font-size: 1.2rem;
    line-height: 1.4;
}

.visitor-counter {
    margin-top: 8px;
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ===== Utility ===== */
.text-center {
    text-align: center;
}

.mt-24 {
    margin-top: 24px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    html {
        font-size: 112.5%;
    }

    .hero {
        padding: 48px 20px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section {
        padding: 32px 16px 48px;
    }

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

    .section-subtitle {
        font-size: 1.4rem;
        margin-bottom: 32px;
        text-align: left !important;
    }

    .about-text p {
        hyphens: none;
        overflow-wrap: normal;
    }

    /* Navbar */
    .navbar {
        padding: 4px 8px;
    }

    .navbar .logo {
        font-size: 1.15rem;
        letter-spacing: 0;
        height: auto;
        white-space: nowrap;
    }

    /* Mobile nav */
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-light);
        padding: 4px 0;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        gap: 0;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 2px 20px;
        font-size: 1.4rem;
        border-radius: 0;
        line-height: 1.4;
    }

    /* Dropdown becomes inline on mobile */
    .dropdown {
        display: block;
        position: static;
        box-shadow: none;
        background: transparent;
        padding-left: 16px;
        min-width: 0;
    }

    .dropdown li a {
        padding: 2px 20px;
        font-size: 1.2rem;
        line-height: 1.3;
    }

    .navbar .container {
        position: relative;
    }

    /* Contact stacks */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-info p {
        font-size: 1rem;
    }

    /* Cards single column */
    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card {
        padding: 20px;
    }

    .card h3 {
        font-size: 1.15rem;
    }

    .card p {
        font-size: 1rem;
    }

    /* Team */
    .team-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .member-card {
        padding: 20px 16px;
    }

    .member-card .photo {
        width: 160px;
        height: 160px;
    }

    .member-card h3 {
        font-size: 1.2rem;
        min-height: 0;
    }

    .member-card .role {
        font-size: 1.05rem;
        min-height: 0;
    }

    /* Expanded member view: stack photo above text */
    .member-card.expanded .member-details {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .member-details .detail-photo {
        width: 160px;
        min-width: 160px;
        height: 160px;
    }

    .member-details .detail-name {
        font-size: 1.2rem;
    }

    .member-details .detail-role {
        font-size: 1.05rem;
    }

    .member-card .bio {
        font-size: 1rem;
    }

    /* Research */
    .research-area {
        padding: 24px 0;
    }

    .research-area h2 {
        font-size: 1.5rem;
    }

    .research-area p,
    .research-content p,
    .research-wrap p {
        font-size: 1.4rem;
        text-align: left;
    }

    .research-content {
        flex-direction: column;
        gap: 16px;
    }

    .research-img {
        width: 100%;
        margin-top: 0;
    }

    .research-img-float {
        float: none;
        width: 100%;
        margin: 0 0 16px 0;
    }

    /* Papers */
    .paper-item {
        padding: 16px 0;
        font-size: 1rem;
    }

    .paper-item .date {
        position: static;
        display: block;
        font-size: 1rem;
        margin-bottom: 6px;
        transform: none;
    }

    .paper-title {
        font-size: 1rem;
    }

    /* Footer */
    .footer .container {
        flex-direction: column;
        text-align: center;
    }

    /* Cover hero mobile */
    .cover-title {
        font-size: 1.8rem;
    }

    .cover-tagline {
        font-size: 1rem;
    }

    .cover-nav-links {
        display: none;
        flex-direction: column;
        gap: 4px;
    }

    .cover-nav-links.open {
        display: flex;
    }

    .cover-nav-links a {
        padding: 10px 24px;
        font-size: 0.8rem;
    }

    .cover-nav .nav-toggle {
        display: block;
        margin: 0 auto;
    }

    /* Home page mobile */
    .welcome-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }

    .welcome-text {
        padding-left: 0;
        text-align: center;
    }

    .welcome-logo img {
        max-width: 240px;
    }

    .welcome-text h1 {
        font-size: 1.8rem;
    }

    .welcome-text p {
        font-size: 1.2rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        text-align: center;
    }

    .about-heading h2 {
        font-size: 1.6rem;
    }

    .about-text p {
        font-size: 1.2rem;
    }

    .home-welcome,
    .home-about {
        padding: 36px 16px;
    }

    .home-funders {
        padding: 32px 16px;
    }

    .home-funders h2 {
        font-size: 1.4rem;
    }

    .funders-logos img {
        max-height: 70px;
    }
}