:root {
    --primary: #a11e22;
    --primary-hover: #8f1b1f;
    --surface: #f4f4f4;
    --surface-alt: #f7f7f7;
    --text: #2c2c2c;
}

@font-face {
    font-family: 'QuickKiss';
    src: url('assets/quick-kiss-font/QuickKissPersonalUse-PxlZ.ttf') format('truetype');
    font-display: swap;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--surface);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

nav {
    position: static;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    background-color: var(--primary);
    width: 100%;
}

.home-link {
    font-family: 'QuickKiss', 'Brush Script MT', cursive;
    font-size: 1.75em;
    color: white !important;
    font-style: normal;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.contact-link {
    font-size: 1em;
    color: #111;
    text-decoration: underline;
}

nav ul li.logo {
    margin-left: auto;
    padding-right: 6px;
}

nav ul li.home-item a.home-link {
    font-family: 'QuickKiss', 'Brush Script MT', cursive;
    font-size: 1.75em;
    color: white !important;
    font-style: normal;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.logo img {
    width: 50px;
    height: auto;
}

.center-items {
    display: flex;
    gap: 10px 20px;
    justify-content: center;
    flex-grow: 1;
    flex-wrap: wrap;
}

nav ul li a {
    text-decoration: none;
    color: white !important;
    font-size: 1.1em;
    font-weight: 300;
    position: relative;
    transition: color 0.25s ease;
    padding: 6px 8px;
    display: inline-block;
}

.center-items > a {
    color: rgba(255, 255, 255, 0.92) !important;
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 8.6ch;
    transition: color 0.18s ease;
}

.center-items > a:hover,
.center-items > a:focus-visible {
    color: #ffffff !important;
    font-weight: 700;
    outline: none;
}

.header-image {
    position: relative;
    text-align: center;
}

.header-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.45));
}

.header-image img {
    width: 100%;
    min-height: 380px;
    max-height: 70vh;
    object-fit: cover;
    display: block;
}

.header-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    text-align: center;
    width: min(90%, 900px);
    z-index: 1;
}

.header-text h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    margin: 0;
    text-wrap: balance;
}

.header-text p {
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 300;
    margin: 8px 0 0;
}

.lab-description {
    background-color: var(--surface-alt);
    padding: 56px 20px;
    text-align: center;
}

.lab-description h2 {
    font-size: 2.2em;
    color: var(--primary);
    margin: 0 0 30px;
}

.lab-description .content-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
    gap: 24px;
}

.lab-description img {
    width: min(420px, 45vw);
    margin-right: 0;
    border-radius: 8px;
    flex-shrink: 0;
}

.lab-description p {
    font-size: 1.18em;
    color: #333;
    line-height: 1.65;
    text-align: left;
    margin: 0 0 14px;
}

.news-section {
    background-color: #ececec;
    padding: 46px 20px 56px;
    text-align: center;
}

.news-section h2 {
    font-size: 2.2em;
    color: var(--primary);
    margin: 0 0 22px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.news-item {
    background-color: #f2f2f2;
    border: 1px solid #ddd;
    padding: 20px;
    border-radius: 8px;
    height: 100%;
}

.news-item p {
    font-size: 1.05em;
    color: #333;
    line-height: 1.5;
    margin: 0;
}

.people-section {
    padding: 54px 20px 44px;
    max-width: 1000px;
    margin: 0 auto;
}

.people-section h2 {
    font-size: 2.2em;
    color: var(--primary);
    margin: 0 0 30px;
    text-align: left;
}

a.email-link {
    text-decoration: none;
    color: black;
    font-weight: bold;
}

a.email-link:hover {
    text-decoration: none;
    color: black;
}

.person {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
}

.person-media {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-right: 20px;
    min-width: 150px;
}

.person img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-right: 0;
}

.cv-button {
    margin-top: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #ffffff 0%, #f7efef 100%);
    color: var(--primary);
    border: 1px solid rgba(161, 30, 34, 0.24);
    border-radius: 999px;
    padding: 4px 12px;
    text-decoration: none;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.cv-button:hover {
    background: linear-gradient(180deg, #ffffff 0%, #fde8e8 100%);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.14);
    transform: translateY(-1px);
}

.person-description p {
    font-size: 1.15em;
    color: #333;
    line-height: 1.6;
    margin: 0;
}

.person-description .cv-button {
    margin-top: 10px;
}

.person-description .inline-cv {
    margin-top: 0;
    margin-left: 8px;
    padding: 2px 10px;
    font-size: 0.63rem;
    vertical-align: middle;
}

.alumni-list p {
    font-size: 1.15em;
    margin: 0 0 10px;
    line-height: 1.6;
}

.alumni-list a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.alumni-list a:hover {
    text-decoration: underline;
}

.research-summary {
    padding: 54px 20px 18px;
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2em;
    line-height: 1.65;
}

.research-section {
    padding: 0 20px 44px;
    max-width: 1040px;
    margin: 0 auto;
}

.research-section h2 {
    font-size: 2.2em;
    color: var(--primary);
    margin-bottom: 50px;
}

.collapsible {
    background-color: var(--primary);
    color: white;
    cursor: pointer;
    padding: 14px 16px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 1.12em;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin-bottom: 8px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.collapsible:hover,
.collapsible.active {
    background-color: var(--primary-hover);
}

.content {
    padding: 0 18px;
    display: none;
    overflow: hidden;
    background-color: var(--surface);
    border-radius: 5px;
    font-size: 1.07em;
    color: #333;
    margin: 0 0 20px;
}

.research-section .content {
    padding: 14px 24px 16px;
}

.research-section .content p,
.research-section .content li {
    line-height: 1.85;
    letter-spacing: 0.01em;
}

.research-section .content p {
    margin: 0 0 1rem;
}

.research-section .content p[style*="margin-left"] {
    border-left: 3px solid rgba(161, 30, 34, 0.25);
    margin-left: 0 !important;
    padding-left: 14px;
}

.research-citation-link {
    color: inherit;
    text-decoration: none;
    font-weight: 600;
}

.research-citation-link:hover u,
.research-citation-link:focus-visible u {
    color: var(--primary);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

.content p:first-child {
    margin-top: 16px;
}

.content p:last-child {
    margin-bottom: 20px;
}

.main-content {
    padding: 42px 20px 34px;
    max-width: 1000px;
    margin: 0 auto;
    color: #333;
    display: block;
    background-color: transparent;
    font-size: 1.15em;
    line-height: 1.65;
}

.main-content h2,
.main-content h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.main-content ul {
    list-style-type: disc;
    padding-left: 20px;
}

.main-content a {
    color: var(--primary);
    text-decoration: none;
}

.main-content a:hover {
    text-decoration: underline;
}

footer {
    background-color: var(--primary);
    color: white;
    text-align: center;
    padding: 8px 12px;
    font-size: 0.82em;
    font-weight: 300;
    width: 100%;
    margin-top: auto;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

footer p {
    margin: 0;
    line-height: 1;
    width: 100%;
    padding-right: 44px;
}

.ocf-logo {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    margin-top: 0;
}

.ocf-logo img {
    width: 34px;
    height: auto;
}

@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    nav ul {
        padding: 10px 12px;
        gap: 8px;
    }

    .home-link,
    nav ul li.home-item a.home-link {
        font-size: 1.55em;
    }

    .logo img {
        width: 42px;
    }

    nav ul li.logo {
        padding-right: 0;
    }

    .center-items {
        width: 100%;
        justify-content: center;
        gap: 6px 12px;
        padding-top: 6px;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }

    nav ul li a {
        font-size: 1em;
        padding: 6px 7px;
    }

    .header-image img {
        min-height: 270px;
    }

    .lab-description .content-wrapper {
        flex-direction: column;
        max-width: 680px;
    }

    .lab-description img {
        width: min(100%, 460px);
    }

    .lab-description p {
        text-align: left;
        font-size: 1.08em;
    }

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

    .people-section h2 {
        text-align: center;
    }

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

    .person img {
        margin-bottom: 0;
    }

    .person-media {
        margin-right: 0;
        margin-bottom: 16px;
    }

    .cv-button {
        font-size: 0.68rem;
        padding: 4px 11px;
    }

    .person-description .inline-cv {
        margin-left: 6px;
        padding: 2px 9px;
        font-size: 0.6rem;
    }

    .research-summary {
        font-size: 1.06em;
    }

    .research-section {
        padding: 0 14px 36px;
    }

    .collapsible {
        font-size: 1.02em;
    }

    .content {
        font-size: 1em;
    }

    .main-content {
        padding: 34px 16px 28px;
        font-size: 1.05em;
    }

    .research-section .content {
        padding: 12px 16px 14px;
    }

    .research-section .content p,
    .research-section .content li {
        line-height: 1.75;
    }

    .ocf-logo {
        right: 8px;
    }

    .ocf-logo img {
        width: 28px;
    }

    footer {
        font-size: 0.74em;
        padding: 7px 8px;
    }

    footer p {
        padding-right: 34px;
    }
}