:root {
    --bg: #f4f4f2;
    --surface: #ffffff;
    --ink: #1a1a1a;
    --soft-ink: #3a3a37;
    --muted: #8a8a87;
    --line: #e6e6e3;
    --line-soft: #ececea;
    --serif: "Cormorant Garamond", "Times New Roman", serif;
    --sans: "Atkinson Hyperlegible", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --max: 1180px;
    --max-prose: 720px;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main > section[id] {
    scroll-margin-top: 120px;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.55;
}

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

/* ---------------- Top bar ---------------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 26px 56px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

.brand {
    position: relative;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 0.02em;
    color: var(--ink);
}

.brand::before,
.brand::after {
    content: "";
    position: absolute;
    pointer-events: none;
}

.brand::before {
    left: -16px;
    top: -7px;
    width: 25px;
    height: 15px;
    background:
        linear-gradient(135deg, transparent 48%, var(--ink) 50%) left / 50% 100% no-repeat,
        linear-gradient(225deg, transparent 48%, var(--ink) 50%) right / 50% 100% no-repeat;
    opacity: 0.86;
}

.brand::after {
    right: -24px;
    top: 12px;
    width: 21px;
    height: 17px;
    border-right: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    border-radius: 0 0 18px 0;
    transform: rotate(-18deg);
    opacity: 0.58;
}

.brand-dot {
    color: var(--ink);
}

.nav {
    display: flex;
    gap: 34px;
}

.nav a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink);
}

.nav-gallery-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.nav-gallery-icon {
    flex: 0 0 auto;
    color: #6c7f5d;
}

/* ---------------- Hero / Home ---------------- */
.hero {
    text-align: center;
    padding: clamp(68px, 9vh, 98px) 24px 26px;
    max-width: 700px;
    margin: 0 auto;
    min-height: calc(100svh - 96px);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.hero-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(36px, 5vw, 54px);
    line-height: 1.15;
    margin: 0 0 20px;
    color: var(--ink);
}

.hero-sub {
    font-size: 15px;
    font-weight: 500;
    color: #6b6b68;
    margin: 0 auto 24px;
    max-width: 520px;
    line-height: 1.85;
}

.divider {
    width: 22px;
    height: 22px;
    margin: 0 auto 22px;
    background-image: radial-gradient(circle, var(--ink) 1.2px, transparent 1.4px);
    background-size: 8px 8px;
    background-position: 0 0;
    opacity: 0.55;
}

.dresden-figure {
    margin: 0 auto;
    width: min(100%, 600px);
}

.dresden-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background: transparent;
    overflow: hidden;
}

.dresden-figure #dresden-photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.dresden-figure.is-loaded #dresden-photo {
    opacity: 1;
}

.dresden-figure.is-loaded .cat-loader {
    opacity: 0;
    pointer-events: none;
}

.cat-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    transition: opacity 0.5s ease;
}

.cat-sprite {
    width: clamp(160px, 30vw, 260px);
    height: auto;
    mix-blend-mode: multiply;
    filter: contrast(1.08) saturate(0.92);
}


.dresden-figure figcaption {
    margin-top: 14px;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--muted);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease;
}

.dresden-figure.is-loaded figcaption {
    opacity: 1;
    visibility: visible;
}

/* ---------------- Section heads ---------------- */
.section-head {
    text-align: center;
    margin-bottom: 56px;
}

.section-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 36px;
    margin: 0 0 14px;
    letter-spacing: 0.01em;
}

.section-sub {
    font-size: 14px;
    color: var(--muted);
    margin: 0 auto;
    max-width: 520px;
    line-height: 1.7;
}

/* ---------------- Prose sections ---------------- */
.prose-section {
    max-width: var(--max-prose);
    margin: 0 auto;
    padding: 80px 24px;
    text-align: center;
}

.prose-section .section-title {
    margin-bottom: 32px;
}

.prose {
    text-align: left;
    color: var(--soft-ink);
}

.prose p {
    margin: 0 0 18px;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.85;
}

.prose a {
    border-bottom: 1px solid #c9c9c4;
    padding-bottom: 1px;
}

.contact-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    margin: 28px 0 4px;
    justify-content: flex-start;
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.contact-icon svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.skills-block {
    display: grid;
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    margin-top: 32px;
}

.skills-label {
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 6px 0 0;
}

.skill-tags {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tags li {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--soft-ink);
    padding: 6px 12px;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: 999px;
}

.link-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.link-list a {
    font-size: 13px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink);
    border: none;
}

/* ---------------- Work section ---------------- */
.work-section {
    max-width: var(--max);
    margin: 0 auto;
    padding: 56px 56px;
}

.project-list {
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    align-items: start;
}

.project-list.is-masonry-ready {
    display: block;
}

.project-grid-sizer,
.project-gutter-sizer {
    position: absolute;
    height: 0;
    margin: 0;
    padding: 0;
    visibility: hidden;
    pointer-events: none;
}

.project-grid-sizer,
.project-row {
    width: calc((100% - 44px) / 3);
}

.project-gutter-sizer {
    width: 22px;
}

.project-row {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid rgba(26, 26, 26, 0.08);
    border-radius: 8px;
    box-shadow: 0 14px 34px rgba(26, 26, 26, 0.06);
    overflow: hidden;
    margin: 0;
    padding: 0;
    transition: box-shadow 0.24s ease, transform 0.24s ease;
}

.project-list.is-masonry-ready .project-row {
    margin-bottom: 22px;
}

.project-row:hover {
    box-shadow: 0 18px 42px rgba(26, 26, 26, 0.1);
    transform: translateY(-2px);
}

.project-row .project-thumb {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: #efefee;
}

.project-row .project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-row .project-thumb--contain img {
    object-fit: contain;
    padding: 16%;
}

/* full-image cards: white background */
.project-item:nth-child(3) .project-thumb,
.project-item:nth-child(4) .project-thumb,
.project-item:nth-child(5) .project-thumb,
.project-item:nth-child(6) .project-thumb,
.project-item:nth-child(7) .project-thumb,
.project-item:nth-child(8) .project-thumb {
    background: #fff;
}

/* STAMP-Workbench (nth-child 3): show full image */
.project-item:nth-child(3) .project-thumb {
    aspect-ratio: unset;
    height: auto;
}

.project-item:nth-child(3) .project-thumb img {
    object-fit: contain;
    height: auto;
    padding: 6%;
}

/* Pathology Agent (nth-child 4): show full image */
.project-item:nth-child(4) .project-thumb {
    aspect-ratio: unset;
    height: auto;
}

.project-item:nth-child(4) .project-thumb img {
    object-fit: contain;
    height: auto;
    padding: 6%;
}

/* STAMP (nth-child 5): logo covers more area */
.project-item:nth-child(5) .project-thumb {
    aspect-ratio: 4 / 3;
}

.project-item:nth-child(5) .project-thumb img {
    object-fit: contain;
    padding: 6%;
}

/* Multiple Appropriate (nth-child 6): show full image */
.project-item:nth-child(6) .project-thumb {
    aspect-ratio: unset;
    height: auto;
}

.project-item:nth-child(6) .project-thumb img {
    object-fit: contain;
    height: auto;
    padding: 6%;
}

/* Nursing Simulation (nth-child 7): show full image */
.project-item:nth-child(7) .project-thumb {
    aspect-ratio: unset;
    height: auto;
}

.project-item:nth-child(7) .project-thumb img {
    object-fit: contain;
    height: auto;
    padding: 6%;
}

/* TalkingChat (nth-child 8): show full image */
.project-item:nth-child(8) .project-thumb {
    aspect-ratio: unset;
    height: auto;
}

.project-item:nth-child(8) .project-thumb img {
    object-fit: contain;
    height: auto;
    padding: 6%;
}

.project-row a.project-thumb:hover img {
    transform: scale(1.03);
    opacity: 0.95;
}

.project-body {
    padding: 18px 18px 20px;
}

.project-meta {
    font-family: ui-monospace, "SF Mono", "Fira Code", monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--muted);
    margin: 0 0 8px;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-item:nth-child(8) .project-meta {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
}

.project-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 23px;
    margin: 0 0 8px;
    letter-spacing: 0.005em;
}

.project-desc {
    color: var(--soft-ink);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.75;
    margin: 0 0 16px;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    align-items: center;
}

.project-links a,
.project-links .demo-trigger {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink);
    border: none;
    background: none;
    padding: 0;
    font-family: inherit;
    cursor: pointer;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 1px;
}

.project-links a:hover,
.project-links .demo-trigger:hover {
    opacity: 0.55;
}

/* Demo stage: inline expansion inside the selected masonry card. */
.project-demo-stage {
    position: relative;
    margin: 0 0 18px;
    background: #fafaf8;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    padding: 0 14px;
    width: 100%;
    box-sizing: border-box;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
}

.project-demo-stage[hidden] {
    display: none;
}

.project-demo-stage.is-open {
    max-height: 80vh;
    opacity: 1;
    padding: 18px 14px;
}

.project-demo-stage__close {
    position: absolute;
    top: 10px;
    right: 14px;
    background: none;
    border: none;
    color: var(--muted);
    font-size: 16px;
    cursor: pointer;
    line-height: 1;
    z-index: 1;
}

.project-demo-stage__close:hover {
    color: var(--ink);
}

.project-demo-stage__body {
    display: flex;
    justify-content: center;
    align-items: center;
}

.project-demo-media {
    max-width: 100%;
    max-height: 62vh;
    display: block;
    background: #000;
    border-radius: 6px;
    object-fit: contain;
}

.demo-trigger.is-active {
    opacity: 0.55;
}

/* ---------------- Learning ---------------- */
.learning-section,
.music-section {
    max-width: var(--max);
    margin: 0 auto;
    padding: 80px 56px;
}

.learning-grid,
.music-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.music-grid {
    align-items: stretch;
}

.music-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.music-grid > .quiet-card {
    height: 100%;
}

.quiet-card {
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 32px;
}

.card-label {
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 18px;
}

.bare-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: var(--soft-ink);
    font-size: 15px;
    font-weight: 500;
}

.bare-list li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.bare-list a {
    border-bottom: 1px solid #d8d8d4;
    padding-bottom: 1px;
}

.german-flag {
    width: 18px;
    height: 12px;
    flex: 0 0 auto;
    border: 1px solid rgba(26, 26, 26, 0.14);
    border-radius: 2px;
    background: linear-gradient(180deg, #111 0 33.33%, #dd0000 33.33% 66.66%, #ffce00 66.66% 100%);
    box-shadow: 0 1px 2px rgba(26, 26, 26, 0.08);
}

.note-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.note-list > li > a {
    font-family: var(--serif);
    font-size: 19px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.005em;
    border: none;
}

.note-list p {
    margin: 6px 0 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    line-height: 1.7;
}

/* ---------------- Music / Photography ---------------- */
.card-cta {
    margin: 18px 0 0;
}

.card-cta a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 2px;
}

.flickr-icon,
.gallery-icon {
    flex-shrink: 0;
}

.gallery-icon {
    color: #6c7f5d;
}

/* Playlists */
.playlist-stack {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.playlist-group {
    border-top: 1px solid var(--line-soft);
    padding-top: 14px;
}

.playlist-group:first-child {
    border-top: none;
    padding-top: 0;
}

.playlist-open {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    background: none;
    border: none;
    padding: 6px 0;
    font-family: inherit;
    color: var(--ink);
    cursor: pointer;
    text-align: left;
}

.playlist-open .chevron {
    font-size: 11px;
    color: var(--muted);
    transition: transform 0.25s ease;
    display: inline-block;
}

.playlist-open[aria-expanded="true"] .chevron {
    transform: rotate(90deg);
}

.playlist-open strong {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: var(--ink);
    letter-spacing: 0.01em;
}

.playlist-open .track-meta {
    display: block;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    margin-top: 3px;
}

.track-list {
    display: none;
    margin-top: 10px;
    padding-left: 22px;
    flex-direction: column;
    gap: 2px;
}

.track-list.open {
    display: flex;
}

.track-loading {
    font-size: 13px;
    color: var(--muted);
    padding: 8px 0;
}

.track-item {
    display: flex;
    gap: 14px;
    align-items: center;
    text-align: left;
    background: none;
    border: none;
    padding: 8px 0;
    font-family: inherit;
    color: var(--soft-ink);
    cursor: pointer;
    border-bottom: 1px solid var(--line-soft);
    width: 100%;
}

.track-item:last-child {
    border-bottom: none;
}

.track-item:hover {
    color: var(--ink);
}

.track-item.playing {
    color: var(--ink);
}

.track-item.playing .track-title {
    font-weight: 500;
}

.track-index {
    font-size: 10px;
    letter-spacing: 0.18em;
    color: var(--muted);
    flex: 0 0 auto;
}

.track-title {
    display: block;
    font-size: 13px;
    line-height: 1.4;
}

.track-subtitle {
    display: block;
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 2px;
}

/* Floating SoundCloud player */
#player-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 80;
    background: var(--surface);
    border-top: 1px solid var(--line);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    padding: 8px 56px 8px 12px;
    height: 86px;
}

#player-bar.visible {
    transform: translateY(0);
}

#sc-player {
    flex: 1;
    width: 100%;
    height: 70px;
    border: 0;
}

#player-close {
    position: absolute;
    top: 8px;
    right: 14px;
    background: none;
    border: none;
    color: var(--muted);
    font-size: 16px;
    cursor: pointer;
    line-height: 1;
    z-index: 1;
}

body.player-open {
    padding-bottom: 86px;
}

/* ---------------- Footer ---------------- */
.foot {
    padding: 60px 24px 50px;
    text-align: center;
    border-top: 1px solid var(--line);
    margin-top: 40px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.foot p {
    margin: 0;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 860px) {
    .topbar {
        padding: 18px 24px;
        flex-direction: column;
        gap: 12px;
    }

    .nav {
        gap: 18px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .work-section,
    .learning-section,
    .music-section {
        padding: 56px 24px;
    }

    .project-grid-sizer,
    .project-row {
        width: calc((100% - 22px) / 2);
    }

    .project-row {
        border-radius: 8px;
    }

    .project-row .project-thumb {
        width: 100%;
        max-width: 100%;
        aspect-ratio: 4 / 5;
        margin: 0;
        overflow: hidden;
    }

    /* cards with full-image display keep auto height at all breakpoints */
    .project-item:nth-child(3) .project-thumb,
    .project-item:nth-child(4) .project-thumb,
    .project-item:nth-child(6) .project-thumb,
    .project-item:nth-child(7) .project-thumb,
    .project-item:nth-child(8) .project-thumb {
        aspect-ratio: unset;
        height: auto;
    }

    .project-desc {
        max-width: 100%;
    }

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

    .hero {
        min-height: auto;
        padding: 56px 20px 24px;
    }

    #player-bar {
        padding-left: 8px;
        padding-right: 36px;
    }
}

@media (max-width: 520px) {
    .nav {
        gap: 14px;
    }

    .nav a {
        font-size: 11px;
        letter-spacing: 0.18em;
    }

    .section-title {
        font-size: 30px;
    }

    .work-section {
        padding: 48px 16px;
    }

    .project-grid-sizer,
    .project-row {
        width: 100%;
    }

    .project-gutter-sizer {
        width: 0;
    }

    .project-row {
        border-radius: 8px;
    }

    .project-title {
        font-size: 22px;
    }

    .project-meta {
        font-size: 11px;
        letter-spacing: 0.04em;
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
        word-break: break-word;
    }

    .project-links {
        gap: 8px 12px;
        flex-wrap: wrap;
    }

    .skills-block {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .skills-label {
        margin-top: 0;
    }

    .section-head {
        margin-bottom: 36px;
    }
}