/**
 * playnary.de — static prototype layout
 * Fischer viewport frame: fixed typo N/S/E/W, scroll inside.
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-accent-red);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--color-accent-purple);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent-purple);
  outline-offset: 2px;
}

h1,
h2,
.frame-name {
  font-family: var(--font-heading);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-display);
  line-height: 1.15;
}

h3,
h4,
.heading {
  font-family: var(--font-heading);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-heading);
  line-height: 1.25;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.2;
  /* Letter-spacing extends past the glyph box; avoid horizontal clip in scrollport */
  padding-inline-end: 0.35em;
}

.display-sub {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  margin-bottom: 1.25rem;
  color: var(--color-hero-accent-purple);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  margin: 0 0 1.25rem;
  color: var(--color-accent-purple);
}

h3 {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}

.skip-link:focus {
  left: 0;
}

/* --- Viewport frame --- */

:root {
  --frame-top: var(--frame-band-n);
  --frame-bottom: var(--frame-band-s);
  --frame-side: var(--frame-padding);
  --frame-viewport-height: calc(100vh - var(--frame-top) - var(--frame-bottom));
  --frame-viewport-height: calc(100dvh - var(--frame-top) - var(--frame-bottom));
}

@media (max-width: 640px) {
  :root {
    --frame-top: clamp(3rem, 8vh, 3.75rem);
    --frame-bottom: clamp(3rem, 8vh, 3.75rem);
    --frame-side: clamp(1.75rem, 5vw, 2.5rem);
    --grid-cols: 4;
  }
}

.viewport-frame {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

.frame {
  position: fixed;
  z-index: 10;
  font-weight: 300;
}

.frame--north {
  top: 0;
  left: 0;
  right: 0;
  height: var(--frame-top);
  padding-inline: var(--frame-side);
  display: flex;
  align-items: center;
  background: var(--color-bg);
}

.frame--north .frame-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
  column-gap: var(--grid-gap);
  align-items: center;
}

.frame--north .frame-name {
  grid-column: 1;
  justify-self: start;
}

.frame--north .frame-meta {
  grid-column: -1;
  justify-self: end;
}

.frame--south {
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--frame-bottom);
  padding-inline: var(--frame-side);
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
  column-gap: var(--grid-gap);
  align-items: center;
  background: var(--color-bg);
  overflow-x: auto;
  scrollbar-width: none;
}

.frame--south::-webkit-scrollbar {
  display: none;
}

.frame--west {
  top: var(--frame-top);
  bottom: var(--frame-bottom);
  left: 0;
  width: var(--frame-side);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

.frame--east {
  top: var(--frame-top);
  bottom: var(--frame-bottom);
  right: 0;
  width: var(--frame-side);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.875rem;
  background: var(--color-bg);
  color: var(--color-text-muted);
}

.frame-name {
  font-size: var(--type-frame-name);
  color: var(--color-accent-purple);
  line-height: 1.2;
  text-decoration: none;
  letter-spacing: var(--letter-spacing-display);
}

.frame-name:hover {
  color: var(--color-accent-red);
}

.frame-meta {
  font-size: var(--type-frame-meta);
  line-height: 1.4;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.frame-meta a {
  color: inherit;
  text-decoration: none;
}

.frame-meta a:hover {
  color: var(--color-accent-red);
}

.frame-brand {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-heading);
  font-size: var(--type-frame-brand);
  font-weight: 300;
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-accent-purple);
  text-transform: lowercase;
}

.frame-brand--link {
  text-decoration: none;
}

.frame-brand--link:hover {
  color: var(--color-accent-red);
}

.frame-brand--accent {
  color: var(--color-accent-red);
}

.frame-nav a {
  font-size: var(--type-frame-nav);
  text-decoration: none;
  color: var(--color-text);
  white-space: nowrap;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.frame-nav a.is-active {
  color: var(--color-accent-red);
  font-weight: 400;
}

.frame-nav a.is-freelance {
  color: var(--color-accent-purple);
}

.frame-nav a.is-freelance.is-active {
  color: var(--color-accent-red);
}

/* 6 nav links × 2 cols on 12-col grid (desktop) */
@media (min-width: 641px) {
  .frame-nav a:nth-child(1) {
    grid-column: 1 / span 2;
    justify-self: start;
  }

  .frame-nav a:nth-child(2) {
    grid-column: 3 / span 2;
  }

  .frame-nav a:nth-child(3) {
    grid-column: 5 / span 2;
  }

  .frame-nav a:nth-child(4) {
    grid-column: 7 / span 2;
  }

  .frame-nav a:nth-child(5) {
    grid-column: 9 / span 2;
  }

  .frame-nav a:nth-child(6) {
    grid-column: 11 / span 2;
    justify-self: end;
  }
}

@media (max-width: 640px) {
  .frame-nav a {
    font-size: clamp(0.5625rem, 2.5vw, 0.6875rem);
  }

  .frame-nav a:nth-child(n) {
    grid-column: span 1;
    justify-self: start;
  }

  .frame--east .frame-brand--link:not(.frame-brand--accent) {
    display: none;
  }
}

/* Scroll viewport */

.frame-viewport {
  position: fixed;
  top: var(--frame-top);
  right: var(--frame-side);
  bottom: var(--frame-bottom);
  left: var(--frame-side);
  overflow-y: auto;
  overflow-x: clip;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
  column-gap: var(--grid-gap);
  align-content: start;
}

/* --- Sections & grid spans --- */

.section {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: subgrid;
  padding-block: var(--space-section);
}

@supports not (grid-template-columns: subgrid) {
  .section {
    grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
    column-gap: var(--grid-gap);
  }
}

.grid-span-text {
  grid-column: 3 / 12;
}

.grid-span-full {
  grid-column: 1 / -1;
}

.section--hero {
  padding-block: 0;
  min-height: var(--frame-viewport-height);
  align-items: center;
  align-items: safe center;
  align-content: center;
  align-content: safe center;
}

.hero--viewport {
  box-sizing: border-box;
}

.hero-inner {
  grid-column: 3 / 12;
  min-width: 0;
  padding-block: clamp(1.5rem, 4vh, 3rem);
}

.hero .display-sub {
  padding-inline-end: 0.35em;
}

.content {
  max-width: none;
  margin: 0;
}

.content--wide {
  max-width: none;
}

@media (max-width: 640px) {
  .grid-span-text,
  .hero-inner {
    grid-column: 1 / -1;
  }

  .site-footer > p {
    grid-column: 1 / -1;
  }
}

.muted {
  color: var(--color-text-muted);
}

.lead {
  font-size: 1.0625rem;
  line-height: 1.6;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.tags li {
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--color-hero-accent-red);
  color: var(--color-hero-text);
  font-weight: 400;
}

.btn--primary:hover {
  color: var(--color-hero-text);
  background: var(--color-hero-link);
}

.btn--ghost {
  border-color: rgba(247, 245, 250, 0.35);
  color: var(--color-hero-text);
}

.btn--ghost:hover {
  border-color: var(--color-hero-link);
  color: var(--color-hero-link);
}

.section--surface {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* Project tiles (Volker-style) */

.project-grid--tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

@media (min-width: 720px) {
  .project-grid--tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.project-tile {
  margin: 0;
  position: relative;
  overflow: hidden;
}

.project-tile__link {
  display: block;
  position: relative;
  color: inherit;
  text-decoration: none;
}

.project-tile__link:hover .project-tile__title {
  color: var(--color-hero-link);
}

.project-tile__media {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.project-tile__caption {
  position: absolute;
  inset: auto 0 0;
  padding: 2.5rem 1rem 1rem;
  background: linear-gradient(to top, rgba(26, 15, 46, 0.88) 0%, rgba(26, 15, 46, 0) 100%);
  color: var(--color-hero-text);
}

.project-tile__meta {
  display: block;
  font-size: 0.75rem;
  color: var(--color-hero-text-muted);
  margin-bottom: 0.25rem;
}

.project-tile__title {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-hero-text);
}

.project-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

/* Publications */

.pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pub-list > li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

.pub-list > li:first-child {
  padding-top: 0;
}

.pub-year {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.pub-thumb {
  float: right;
  width: 140px;
  margin: 0 0 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

@media (max-width: 480px) {
  .pub-thumb {
    float: none;
    width: 100%;
    margin: 0 0 0.75rem;
  }
}

/* Teaching */

.talk-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.talk-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.talk-list li:first-child {
  padding-top: 0;
}

.media-player {
  display: block;
  width: 100%;
  max-width: 32rem;
  margin: 0.75rem 0 0.5rem;
}

/* Contact */

.contact-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-links li {
  margin-bottom: 0.5rem;
}

.contact-links a {
  font-size: 1.0625rem;
}

/* Freelance */

.service-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-card {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.service-card h3 {
  color: var(--color-accent-purple);
}

.ref-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ref-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.ref-list li:first-child {
  padding-top: 0;
}

.ref-period {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.ref-partners {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.pullquote {
  margin: 1.5rem 0;
  padding: 0 0 0 1rem;
  border-left: 3px solid var(--color-accent-purple);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.subsection-title {
  font-size: 1.125rem;
  margin: 2rem 0 0.75rem;
  color: var(--color-accent-purple);
}

.edu-list,
.timeline-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.edu-list li,
.timeline-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-border);
}

.edu-list li:first-child,
.timeline-list li:first-child {
  padding-top: 0;
}

.edu-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.partner-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin-top: 0.5rem;
  font-size: 0.875rem;
}

.logo-wall {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.75rem;
  margin: 1.25rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--color-border);
}

.logo-wall img {
  height: 1.75rem;
  width: auto;
  max-width: 8.5rem;
  object-fit: contain;
  opacity: 0.88;
  filter: grayscale(1);
}

.logo-wall a:hover img {
  opacity: 1;
  filter: none;
}

.logo-wordmark {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 300;
  letter-spacing: var(--letter-spacing-heading);
  text-decoration: none;
  color: var(--color-text);
  text-transform: lowercase;
}

.logo-wordmark:hover {
  color: var(--color-accent-red);
}

.writing-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.writing-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.project-note {
  margin-top: var(--grid-gap);
  padding: 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

/* Footer inside viewport */

.site-footer {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: subgrid;
  padding: 2rem 0 3rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

@supports not (grid-template-columns: subgrid) {
  .site-footer {
    grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
    column-gap: var(--grid-gap);
  }
}

.site-footer > p {
  grid-column: 3 / 12;
}

.site-footer a {
  color: var(--color-text-muted);
}

.site-footer a:hover {
  color: var(--color-accent-red);
}

.site-footer span {
  margin: 0 0.35rem;
}