:root {
    --font-lg: 6rem;
    --font-md: clamp(0.8rem, 2.2vh, 1.5rem);
    --font-sm: 1rem;
    --font-title: clamp(2rem, 5vw, 3.5rem);
    --header-h: 12.5vh;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    color: #ffffff;
    font-family: 'Roboto', sans-serif;
}

.screen {
    z-index: 1;
    margin: 0;
    width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    position: fixed;
    top: var(--header-h);
    bottom: 0;
    left: 0;
    background-color: #0E0D0F;
}

.hidden {
    display: none !important
}

.control-panel {
    box-sizing: border-box;
    z-index: 2;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    background-color: #151515;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 2vw;
}

.nav-buttons {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 2vw;
    height: 100%;
}

.nav-buttons button,
.cv-link {
    font-family: 'Roboto', sans-serif;
    font-size: var(--font-md);
    font-weight: 300;
    color: #ffffff;
    opacity: 0.6;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5em 1em;
    white-space: nowrap;
}

.nav-buttons button.active {
    font-weight: 700;
    opacity: 1;
}

.cv-link {
    margin-left: auto;
    margin-right: 2vw;
    text-decoration: none;
}

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

.title {
    position: absolute;
    top: 0;
    left: 6%;
    padding-top: 5vh;
    display: flex;
    flex-direction: column;
}

.title h1 {
    font-size: var(--font-lg);
    font-weight: 700;
    line-height: 1;
    margin: 0;
}

.title h2 {
    font-size: var(--font-md);
    font-weight: 300;
    opacity: 0.6;
    line-height: 1;
    margin: 0.05em 0 0 0;
}

.home-hero {
    position: relative;
    height: 100%;
}

.home-card {
    position: absolute;
    top: 37.5vh;
    left: 6%;
    display: flex;
    flex-direction: column;
}

.home-card .line {
    width: 25vw;
    height: 3px;
    background-color: #BD0022;
    margin-bottom: 1em;
}

.home-card p {
    width: 22vw;
    font-size: var(--font-sm);
    font-weight: 300;
    line-height: 1.5;
}

.home-image-frame {
    position: absolute;
    top: 56%;
    right: 22%;
    transform: translateY(-50%);
    width: 34vw;
    aspect-ratio: 598 / 421;
    box-sizing: border-box;
    border: 4px solid #BD0022;
    border-radius: 2.0% / 2.87%;
    overflow: hidden;
}

.home-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---------- Home: skills ---------- */
.skills {
    display: flex;
    gap: 6%;
    padding: 12vh 6% 10vh;
}

.skill-group {
    flex: 1;
    display: flex;
    gap: 1.5em;
    min-height: 24vh;
}

.skill-line {
    flex-shrink: 0;
    width: 3px;
    background-color: #BD0022;
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.9s ease;
}

.skill-content {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease 0.4s, transform 0.6s ease 0.4s;
}

.skill-content h3 {
    font-size: var(--font-md);
    font-weight: 400;
    margin-bottom: 0.8em;
}

.skill-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5em;
    font-size: var(--font-sm);
    font-weight: 300;
    opacity: 0.75;
}

.skill-group.visible .skill-line {
    transform: scaleY(1);
}

.skill-group.visible .skill-content {
    opacity: 1;
    transform: none;
}

.skill-group + .skill-group .skill-line,
.skill-group + .skill-group .skill-content {
    transition-delay: 0.25s;
}

.skill-group + .skill-group.visible .skill-content {
    transition-delay: 0.65s;
}

/* ---------- Home: top projects ---------- */
.top-projects {
    padding-bottom: 10vh;
}

.top-projects-title {
    padding: 0 6%;
    font-size: var(--font-lg);
    font-weight: 300;
    line-height: 1;
    margin-bottom: 4vh;
}

.top-projects-title,
.carousel-card {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.top-projects-title.visible,
.carousel-card.visible {
    opacity: 1;
    transform: none;
}

.carousel {
    position: relative;
}

.carousel-track {
    display: flex;
    gap: 2.5vw;
    padding: 0 6% 1em;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 6%;
    scrollbar-width: none;
}

.carousel-track::-webkit-scrollbar {
    display: none;
}

.carousel-card {
    flex: 0 0 24vw;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    gap: 0.8em;
    background: none;
    border: none;
    padding: 0;
    text-align: left;
    cursor: pointer;
}

.carousel-image {
    display: block;
    width: 100%;
    aspect-ratio: 273 / 190;
    border: 3px solid #BD0022;
    border-radius: 2.0% / 2.87%;
    overflow: hidden;
    background-color: #3a3a3a;
}

.carousel-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.carousel-name {
    font-size: var(--font-sm);
    font-weight: 300;
    transition: color 0.2s;
}

.carousel-card:hover .carousel-image img {
    transform: scale(1.04);
}

.carousel-card:hover .carousel-name {
    color: #BD0022;
}

.carousel-btn {
    position: absolute;
    top: calc(12vw * 190 / 273);
    transform: translateY(-50%);
    z-index: 1;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background-color: rgba(14, 13, 15, 0.85);
    font-size: 1.1rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

.carousel-btn:hover {
    border-color: #BD0022;
    color: #BD0022;
}

.carousel-btn--prev {
    left: 1.5%;
}

.carousel-btn--next {
    right: 1.5%;
}

@media (prefers-reduced-motion: reduce) {
    .skill-line,
    .skill-content,
    .top-projects-title,
    .carousel-card {
        transition: none;
    }
}

.page-title {
    position: absolute;
    top: 0;
    left: 6%;
    padding-top: 5vh;
}

.page-title h1 {
    font-size: var(--font-title);
    font-weight: 700;
    line-height: 1;
}

.projects-table {
    --col-name: 20%;
    --col-type: 16%;
    position: relative;
    margin: 24vh 0 0 6%;
    width: 62vw;
    min-height: 30vh;
}

#projects {
    padding-bottom: 6vh;
}

.projects-header {
    display: grid;
    grid-template-columns: var(--col-name) var(--col-type) 1fr;
    padding-bottom: 0.75em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.projects-header span {
    font-size: var(--font-sm);
    font-weight: 400;
    opacity: 0.6;
}

.projects-header .col-type,
.projects-header .col-details,
.project-row .col-type,
.project-row .col-details {
    padding-left: 1.5em;
}

.projects-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(255, 255, 255, 0.15);
}

.projects-divider--1 {
    left: var(--col-name);
}

.projects-divider--2 {
    left: calc(var(--col-name) + var(--col-type));
}

.projects-body {
    display: flex;
    flex-direction: column;
}

.project-row {
    display: grid;
    grid-template-columns: var(--col-name) var(--col-type) 1fr;
    align-items: center;
    padding: 1em 0;
    cursor: pointer;
}

.project-row span {
    font-size: var(--font-sm);
    font-weight: 300;
    transition: color 0.2s;
}

.project-row .col-details {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-right: 1em;
}

.project-row .arrow {
    opacity: 0.6;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.project-row:hover span {
    color: #BD0022;
}

.project-row:hover .arrow {
    opacity: 1;
    transform: translateX(4px);
}

#project-detail {
    display: flex;
    flex-direction: column;
}

.project-detail-body {
    flex-shrink: 0;
    margin: 22vh 0 0 6%;
    width: 88%;
    display: flex;
    gap: 4%;
}

.project-detail-left {
    width: 34%;
    display: flex;
    flex-direction: column;
}

.project-image-frame {
    box-sizing: border-box;
    width: 100%;
    aspect-ratio: 273 / 190;
    border: 4px solid #BD0022;
    border-radius: 2.0% / 2.87%;
    overflow: hidden;
    background-color: #3a3a3a;
}

.project-image-frame img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-outputs-heading {
    margin-top: 1.5em;
    font-size: var(--font-sm);
    font-weight: 400;
}

.project-outputs {
    list-style: none;
    margin: 0.6em 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5em;
    font-size: var(--font-sm);
    font-weight: 300;
}

.project-outputs a {
    color: #ffffff;
    text-decoration: none;
    border-bottom: 1px solid #BD0022;
    transition: color 0.2s;
}

.project-outputs a:hover {
    color: #BD0022;
}

.project-detail-right {
    flex: 1;
    display: flex;
    gap: 1.2em;
}

.project-detail-line {
    flex-shrink: 0;
    width: 3px;
    background-color: #BD0022;
}

.project-detail-text {
    display: flex;
    flex-direction: column;
    gap: 1em;
    font-size: var(--font-sm);
    font-weight: 300;
    line-height: 1.5;
}

.project-collaborators {
    flex-shrink: 0;
    margin-top: auto;
    padding: 4vh 6% 4vh 0;
    text-align: right;
    font-size: 0.85rem;
    font-weight: 300;
    opacity: 0.6;
}

.contact-card {
    margin: 24vh 0 6vh 6%;
    width: 40vw;
    display: flex;
    flex-direction: column;
}

.contact-card .line {
    width: 25vw;
    height: 3px;
    background-color: #BD0022;
    margin-top: 1em;
}

.contact-card p {
    font-size: var(--font-sm);
    font-weight: 300;
    line-height: 1.5;
}

.contact-links {
    list-style: none;
    margin-top: 1.5em;
    display: flex;
    flex-direction: column;
}

.contact-links li {
    display: grid;
    grid-template-columns: 7em 1fr;
    align-items: baseline;
    padding: 1em 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: var(--font-sm);
    font-weight: 300;
}

.contact-label {
    opacity: 0.6;
}

.contact-links a {
    justify-self: start;
    text-decoration: none;
    border-bottom: 1px solid #BD0022;
    overflow-wrap: anywhere;
    transition: color 0.2s;
}

.contact-links a:hover {
    color: #BD0022;
}

/* ---------- Tablets & phones ---------- */
@media (max-width: 900px) {
    :root {
        --font-lg: clamp(2.75rem, 13vw, 4.5rem);
        --font-md: 1rem;
        --font-title: clamp(2rem, 9vw, 3rem);
        --header-h: 3.5rem;
    }

    .control-panel {
        padding-left: 0.5rem;
    }

    .nav-buttons {
        gap: 0;
    }

    .nav-buttons button,
    .cv-link {
        font-size: 0.95rem;
        padding: 0.5em 0.6em;
    }

    .cv-link {
        margin-right: 0.5rem;
    }

    .screen {
        padding: 2rem 1.25rem 3rem;
    }

    /* Put everything back into normal flow so it stacks */
    .title,
    .home-card,
    .home-image-frame,
    .page-title,
    .projects-table,
    .project-detail-body,
    .contact-card {
        position: static;
        transform: none;
        width: 100%;
        margin: 0;
        padding-top: 0;
    }

    /* Home */
    .home-hero {
        height: auto;
    }

    .skills {
        flex-direction: column;
        gap: 2.5rem;
        padding: 4rem 0 3rem;
    }

    .skill-group {
        min-height: 0;
    }

    .top-projects-title {
        padding: 0;
    }

    .carousel-track {
        gap: 1rem;
        margin: 0 -1.25rem;
        padding: 0 1.25rem 1em;
        scroll-padding: 0 1.25rem;
    }

    .carousel-card {
        flex-basis: 75vw;
    }

    .carousel-btn {
        display: none;
    }

    .home-card {
        margin-top: 2rem;
    }

    .home-card .line {
        width: 60%;
    }

    .home-card p {
        width: auto;
        max-width: 32rem;
    }

    .home-image-frame {
        margin-top: 2rem;
    }

    /* Contact */
    .contact-card .line {
        width: 60%;
    }

    .contact-links li {
        grid-template-columns: 5.5em 1fr;
    }

    /* Page titles */
    .page-title {
        margin-bottom: 1.5rem;
    }

    /* Projects: one stacked card per row instead of three columns */
    .projects-header,
    .projects-divider {
        display: none;
    }

    .projects-table {
        min-height: 0;
    }

    .project-row {
        grid-template-columns: 1fr auto;
        gap: 0.35rem 1rem;
        padding: 1rem 0.25rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .project-row .col-name {
        font-weight: 400;
    }

    .project-row .col-type {
        padding-left: 0;
        font-size: 0.85rem;
        opacity: 0.6;
    }

    .project-row .col-details {
        grid-column: 1 / -1;
        padding: 0;
        gap: 1rem;
        font-size: 0.85rem;
        opacity: 0.75;
    }

    /* Project detail: image, then text, then outputs */
    .project-detail-body {
        flex-direction: column;
        gap: 1.5rem;
    }

    .project-detail-left {
        display: contents;
    }

    .project-image-frame {
        order: 1;
    }

    .project-detail-right {
        order: 2;
    }

    .project-outputs-heading {
        order: 3;
        margin-top: 0;
        margin-bottom: -1rem;
    }

    .project-outputs {
        order: 4;
        margin: 0;
    }

    .project-collaborators {
        padding: 2rem 0 0;
        text-align: left;
    }
}