/* ==========================================================================
   Stefan Flikweert — site styles
   ========================================================================== */

/* ---------- Tokens ---------- */

:root {
  --background: oklch(96.5% .008 85);
  --foreground: oklch(20% .006 60);
  --card: oklch(94.5% .009 85);
  --muted-foreground: oklch(50% .008 70);
  --border: oklch(20% .006 60 / .14);
  --input: oklch(20% .006 60 / .2);

  --steel: oklch(56% .008 240);
  --oxide: oklch(47% .15 30);
  --signal: oklch(66% .17 50);
  --ochre: oklch(80% .14 85);
  --slate: oklch(50% .06 245);

  /* Full-width philosophy band */
  --band-bg: oklch(19% .005 60);
  --band-fg: oklch(96.5% .008 85);

  --font-sans: "Instrument Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --background: oklch(17% .005 60);
  --foreground: oklch(93% .008 85);
  --card: oklch(21% .006 60);
  --muted-foreground: oklch(68% .008 70);
  --border: oklch(93% .008 85 / .14);
  --input: oklch(93% .008 85 / .22);

  --steel: oklch(70% .008 240);
  --oxide: oklch(62% .15 30);

  --band-bg: oklch(12.5% .004 60);
  --band-fg: oklch(93% .008 85);

  color-scheme: dark;
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "tnum";
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease, color .3s ease;
}

h1, h2, h3 {
  font-size: inherit;
  font-weight: inherit;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ol {
  list-style: none;
}

:focus-visible {
  outline: 1px solid var(--foreground);
  outline-offset: 4px;
}

::selection {
  background: var(--oxide);
  color: var(--background);
}

/* ---------- Primitives ---------- */

.container {
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

.grid > * {
  grid-column: 1 / -1;
}

.label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

.display {
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: .95;
}

.hairline {
  border-top: 1px solid var(--border);
}

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

.placeholder {
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  background:
    repeating-linear-gradient(135deg, transparent 0 11px, var(--border) 11px 12px),
    var(--card);
  border: 1px dashed var(--input);
}

.placeholder .label {
  background: var(--background);
  padding: .25rem .5rem;
}

/* Show the image that matches the active theme */
:root:not([data-theme="dark"]) .show-dark,
:root[data-theme="dark"] .show-light {
  display: none;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: color-mix(in oklab, var(--background) 85%, transparent);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.25rem;
}

.site-header__name {
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: -.025em;
}

.site-header__right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav {
  display: none;
  gap: 2rem;
}

.site-header a.label,
.theme-toggle {
  transition: color .2s ease;
}

.site-header a.label:hover,
.theme-toggle:hover {
  color: var(--foreground);
}

/* ---------- Sections ---------- */

.section {
  padding-block: 6rem;
  scroll-margin-top: 5rem;
}

.section-head {
  padding-top: 1.25rem;
}

.section-head__num {
  grid-column: span 2;
}

.section-head__title {
  grid-column: span 10;
}

.section-head + .grid,
.section-head + .direction {
  margin-top: 4rem;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  padding: 7rem 0 2.5rem;
}

.hero__intro {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero__kicker {
  margin-bottom: 2rem;
}

.hero__title {
  font-size: clamp(2.75rem, 6.5vw, 6rem);
}

.hero__bottom {
  margin-top: 3rem;
}

.hero__tagline {
  max-width: 20rem;
  font-size: 1.5rem;
  line-height: 1.375;
  letter-spacing: -.025em;
}

.scroll-hint {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2.5rem;
}

.scroll-hint__track {
  position: relative;
  width: 1px;
  height: 3.5rem;
  overflow: hidden;
  background: var(--border);
}

.scroll-hint__line {
  position: absolute;
  inset: 0;
  background: var(--foreground);
  animation: drop 2.4s cubic-bezier(.6, 0, .2, 1) infinite;
}

@keyframes drop {
  0%   { transform-origin: top;    transform: scaleY(0); }
  50%  { transform-origin: top;    transform: scaleY(1); }
  51%  { transform-origin: bottom; }
  100% { transform-origin: bottom; transform: scaleY(0); }
}

.hero__figure {
  display: flex;
  flex-direction: column;
}

.hero__frame {
  display: flex;
  flex: 1;
  align-items: center;
  background: var(--card);
  transition: background-color .3s ease;
}

.hero__img {
  width: 100%;
  max-width: 720px;
  margin-inline: auto;
  object-fit: contain;
}

.caption-row {
  display: flex;
  justify-content: space-between;
  margin-top: .75rem;
}

/* ---------- Work ---------- */

.work__title {
  font-size: 3rem;
}

.work__meta {
  margin-top: 1.5rem;
}

.work__text {
  max-width: 24rem;
  margin-top: 2.5rem;
  font-size: 1.125rem;
  line-height: 1.625;
}

/* Turntable */

.turntable {
  position: relative;
}

.turntable__stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  cursor: grab;
  touch-action: pan-y;
  -webkit-user-select: none;
  user-select: none;
}

.turntable__stage:active {
  cursor: grabbing;
}

.turntable__stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  opacity: 0;
}

.turntable__stage img.is-active {
  opacity: 1;
}

.turntable__status {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
}

.turntable__bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.turntable__track {
  position: relative;
  flex: 1;
  height: 1px;
  background: var(--border);
}

.turntable__marker {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1px;
  height: .5rem;
  transform: translateY(-50%);
  background: var(--foreground);
}

.turntable__angle {
  width: 2.5rem;
  text-align: right;
  color: var(--foreground);
}

.turntable__options {
  display: flex;
  gap: 1.25rem;
  margin-top: 1rem;
}

.option {
  padding-bottom: .125rem;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.option:hover,
.option[aria-pressed="true"] {
  color: var(--foreground);
}

.option[aria-pressed="true"] {
  border-color: var(--foreground);
}

/* Gallery */

.gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 4rem 1.5rem;
  margin-top: 6rem;
}

.gallery > * {
  grid-column: 1 / -1;
}

.photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--card);
}

.photo figcaption {
  display: flex;
  flex-direction: column;
  gap: .375rem;
  margin-top: .75rem;
}

.photo__title {
  color: var(--foreground);
}

.photo__desc {
  font-size: .75rem;
  line-height: 1.625;
}

/* ---------- Project & About (two-column split) ---------- */

.specs > div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-block: 1rem;
}

.specs dd {
  font-size: .875rem;
}

.prose {
  font-size: 1.125rem;
  line-height: 1.625;
}

.prose > * + * {
  margin-top: 1.5rem;
}

.prose__lead {
  font-size: 1.875rem;
  line-height: 1.25;
}

.about__photo {
  aspect-ratio: 4 / 5;
}

/* ---------- Process ---------- */

.process__lead {
  max-width: 48rem;
  margin-top: 4rem;
  font-size: 1.875rem;
  line-height: 1.25;
}

.process {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3.5rem 1.5rem;
  margin-top: 5rem;
}

.process li {
  padding-top: 1.25rem;
}

.process h3 {
  margin-top: 1.5rem;
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -.025em;
}

.process .arrow {
  color: var(--steel);
}

.process p {
  margin-top: .75rem;
  font-size: .875rem;
  line-height: 1.625;
}

.process .placeholder {
  margin-top: 1.5rem;
  aspect-ratio: 3 / 4;
}

/* ---------- Philosophy band ---------- */

.section--band {
  --border: color-mix(in oklab, var(--band-fg) 14%, transparent);
  --muted-foreground: oklch(70% .008 70);
  background: var(--band-bg);
  color: var(--band-fg);
  scroll-margin-top: 0;
  transition: background-color .3s ease;
}

.philosophy__quote {
  font-size: 2.25rem;
  line-height: 1.05;
}

.swatches {
  display: flex;
  gap: .75rem;
  margin-top: 2.5rem;
}

.swatch {
  width: 2.5rem;
  height: .25rem;
}

.swatch--oxide  { background: var(--oxide); }
.swatch--signal { background: var(--signal); }
.swatch--ochre  { background: var(--ochre); }
.swatch--slate  { background: var(--slate); }

.manifesto-toggle {
  margin-top: 4rem;
  padding-bottom: .25rem;
  border-bottom: 1px solid currentColor;
  transition: color .2s ease;
}

.manifesto-toggle:hover {
  color: var(--band-fg);
}

.manifesto {
  display: grid;
  gap: 1.5rem;
  max-width: 48rem;
  margin-top: 3rem;
  font-size: 1.125rem;
  line-height: 1.625;
  animation: fade-in .5s ease;
}

.manifesto[hidden] {
  display: none;
}

.manifesto__dim {
  opacity: .75;
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ---------- Direction ---------- */

.direction {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.direction > div {
  padding-top: 1.25rem;
}

.direction .display {
  margin-top: 1.5rem;
  font-size: 1.875rem;
}

.direction__note {
  max-width: 28rem;
  margin-top: 3rem;
}

/* ---------- Contact & footer ---------- */

.section--contact {
  padding-bottom: 2.5rem;
}

.contact__text {
  max-width: 36rem;
  font-size: 1.5rem;
  line-height: 1.375;
  letter-spacing: -.025em;
}

.contact__link {
  display: inline-block;
  padding-bottom: .25rem;
  border-bottom: 1px solid var(--foreground);
  font-size: clamp(1.5rem, 7.5vw, 1.875rem);
  overflow-wrap: anywhere;
  transition: color .2s ease, border-color .2s ease;
}

.contact__link:hover {
  color: var(--oxide);
  border-color: var(--oxide);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 8rem;
  padding-top: 1.25rem;
}

/* ---------- Desktop (md: 768px+) ---------- */

@media (min-width: 48rem) {
  .container {
    padding-inline: 2.5rem;
  }

  .site-nav {
    display: flex;
  }

  .site-nav__mobile {
    display: none;
  }

  .section {
    padding-block: 9rem;
  }

  .section--contact {
    padding-bottom: 2.5rem;
  }

  .section-head__title {
    grid-column: span 4;
  }

  /* Hero */
  .hero__intro   { grid-column: span 5; }
  .hero__figure  { grid-column: span 7; }
  .hero__bottom  { margin-top: 0; }

  /* Work */
  .work__intro     { grid-column: span 4; }
  .work__turntable { grid-column: 6 / span 7; }
  .work__title     { font-size: 3.75rem; }

  .gallery__1 { grid-column: 1 / span 7; }
  .gallery__2 { grid-column: 9 / span 4; margin-top: 10rem; }
  .gallery__3 { grid-column: 1 / span 5; }
  .gallery__4 { grid-column: 7 / span 6; margin-top: 6rem; }
  .gallery__5 { grid-column: 2 / span 5; }

  /* Project & About */
  .split > :first-child { grid-column: span 4; }
  .split > .prose       { grid-column: 7 / span 6; }
  .prose__lead          { font-size: 2.25rem; }

  /* Process */
  .process__lead { font-size: 3rem; }
  .process       { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  /* Philosophy */
  .philosophy__quote {
    grid-column: span 9;
    font-size: 4.5rem;
  }

  .swatches {
    grid-column: span 3;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-end;
    margin-top: 0;
  }

  /* Direction */
  .direction          { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .direction .display { font-size: 3rem; }

  /* Contact */
  .contact__text      { grid-column: span 6; }
  .contact__link-wrap { grid-column: span 6; text-align: right; }
  .contact__link      { font-size: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}