/* ============================================================
   pol roig · style
   mobile-first, minimal
   ============================================================ */

:root {
  --bg: #000;
  --fg: #fff;
  --accent: #f00;
  --muted: #ccc;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  /* wheel / mirilla geometry (mobile) — capped by both width and height so
     landscape phones don't get a wheel taller than the viewport */
  --wheel-size: min(82vw, 62dvh, 360px);
  --mirilla-size: 42%;
  --item-radius-ratio: 0.9; /* multiplier of half the stage size */

  /* pointer — equilateral triangle */
  --pointer-base: 34px; /* base width; height = base * √3/2 */

  --gap-block: 1.25rem;
  --header-h: 3.25rem;

  /* shared horizontal rhythm */
  --pad-x: 1.25rem;
  --max-w: 80rem;

  /* mirilla cross-fade duration — JS reads this so swap timing stays in sync */
  --mirilla-fade: 350ms;
}

/* -------- reset / base -------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); color: var(--fg); }
body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.4;
  background: var(--bg);
  color: var(--fg);
  min-height: 100svh;
  overflow-x: hidden;
  text-wrap: pretty;
}
a { color: inherit; text-decoration: none; }
button {
  font: inherit; color: inherit;
  background: none; border: 0; padding: 0; margin: 0;
  cursor: pointer;
}

/* keyboard focus ring — visible only for keyboard users */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
img { max-width: 100%; display: block; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* SPA views: [hidden] must beat display:flex/grid on .home / .proyecto */
.view[hidden] { display: none !important; }

/* -------- top bar -------- */
.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem var(--pad-x);
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 20;
}
.logo {
  color: var(--accent);
  font-size: 1rem;
  letter-spacing: 0.01em;
}
.lang { position: relative; }
.lang__toggle {
  color: var(--accent);
  font-size: 1rem;
}
.lang__menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.35rem;
  background: var(--bg);
  padding: 0.25rem 0;
  text-align: right;
  min-width: 3rem;
}
.lang__menu[hidden] { display: none; }
.lang__menu li a {
  display: block;
  padding: 0.2rem 0.4rem;
  color: var(--accent);
}
.lang__menu li a[aria-current="true"] { opacity: 0.5; }

/* ==============================================================
   HOME
   Wheel + instruct + pointer are absolutely positioned so that at
   scroll=0 the wheel sits at the viewport's centre. project-info
   sits right below the wheel (small gap, no wasted viewport).
   Scrolling moves the whole column naturally.
   ============================================================== */
.home {
  padding: 0 var(--pad-x) 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  min-height: calc(100dvh - var(--header-h));
}

/* instruct label, pinned just above the pointer */
.instruct {
  position: absolute;
  top: calc(50dvh - var(--header-h) - var(--wheel-size) / 2 - var(--pointer-base) * 0.866 - 1.25rem);
  left: 0;
  right: 0;
  padding: 0 var(--pad-x);
  text-align: center;
  font-size: 1rem;
  transform: translateY(-100%);
  z-index: 5;
  pointer-events: none;
}

/* equilateral triangle pointing down toward the wheel, pinned above it */
.pointer {
  width: 0;
  height: 0;
  border-left: calc(var(--pointer-base) / 2) solid transparent;
  border-right: calc(var(--pointer-base) / 2) solid transparent;
  border-top: calc(var(--pointer-base) * 0.866) solid var(--fg);
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.18));
  position: absolute;
  top: calc(50dvh - var(--header-h) - var(--wheel-size) / 2 - 0.5rem);
  left: 50%;
  transform: translate(-50%, -100%);
  z-index: 5;
  pointer-events: none;
}

/* -------- wheel stage — centred in the first viewport of .home -------- */
.wheel-stage {
  position: absolute;
  top: calc(50dvh - var(--header-h));
  left: 50%;
  transform: translate(-50%, -50%);
  width: var(--wheel-size);
  aspect-ratio: 1 / 1;
  touch-action: none; /* critical for drag-to-rotate */
  user-select: none;
  cursor: grab;
  z-index: 5;
  --item-radius: calc(var(--wheel-size) / 2 * var(--item-radius-ratio));
}
.wheel-stage:has(.wheel.is-dragging) { cursor: grabbing; }

/* the mirilla sits in the middle, does NOT rotate.
   clickable: opens the active project. */
.mirilla {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--mirilla-size);
  height: var(--mirilla-size);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  overflow: hidden;
  z-index: 2;
  background: #111;
  box-shadow:
    0 0 0 2px rgba(255,255,255,0.04),
    inset 0 0 30px rgba(0,0,0,0.9);
  view-transition-name: mirilla;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.mirilla:hover {
  box-shadow:
    0 0 0 2px rgba(255,255,255,0.18),
    inset 0 0 30px rgba(0,0,0,0.7);
}
.mirilla__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--mirilla-fade) var(--ease);
}
.mirilla__img.is-swapping { opacity: 0; }

/* the wheel: absolute-positioned items around the mirilla */
.wheel {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  transform: rotate(var(--rot, 0deg));
  /* tiny overshoot on the final snap — feels like a real dial */
  transition: transform 0.55s cubic-bezier(0.34, 1.22, 0.64, 1);
  will-change: transform;
}
.wheel.is-dragging { transition: none; }

.wheel__item {
  position: absolute;
  top: 50%;
  left: 50%;
  transform:
    translate(-50%, -50%)
    rotate(calc(var(--i) * 45deg))
    translate(0, calc(-1 * var(--item-radius)));
  transform-origin: 50% 50%;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  color: var(--item-color, var(--fg));
  opacity: 0.7;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
  text-align: center;
  text-wrap: balance;
  width: max-content;
  max-width: 7rem;
  line-height: 1.15;
}
.wheel__item[data-active="true"] {
  color: var(--accent);
  opacity: 1;
}

/* -------- project info block — sits just below the wheel (small gap) -------- */
.project-info {
  width: 100%;
  max-width: 32rem;
  margin: 0 auto;
  padding-top: calc(50dvh + var(--wheel-size) / 2 + 1.25rem - var(--header-h));
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}
.synopsis,
.bio-frag {
  font-size: 0.95rem;
  line-height: 1.5;
}
.view-project {
  text-align: center;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  letter-spacing: 0.01em;
  transition: color 0.2s var(--ease);
}
.view-project::after {
  content: " →";
  display: inline-block;
  transition: transform 0.2s var(--ease);
}
.view-project:hover::after { transform: translateX(3px); }
.view-project:hover { color: var(--accent); }

/* ==============================================================
   PROYECTO PAGE
   Content appears with a soft stagger when the view transition lands.
   ============================================================== */
@keyframes proyecto-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.proyecto__head,
.proyecto__synopsis,
.proyecto__text,
.proyecto__creditos,
.proyecto__back {
  animation: proyecto-rise 0.5s var(--ease) both;
}
.proyecto__head      { animation-delay: 0.10s; }
.proyecto__synopsis  { animation-delay: 0.22s; }
.proyecto__text      { animation-delay: 0.30s; }
.proyecto__creditos  { animation-delay: 0.38s; }
.proyecto__back      { animation-delay: 0.55s; }

/* gallery images fade/slide in as they enter the viewport */
.proyecto__gallery img {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.proyecto__gallery img.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .proyecto__head,
  .proyecto__synopsis,
  .proyecto__text,
  .proyecto__creditos,
  .proyecto__back,
  .proyecto__gallery img {
    animation: none;
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.proyecto {
  padding: 0 var(--pad-x) 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.proyecto__article {
  max-width: 46rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.proyecto__head {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.5rem;
}
.proyecto__title {
  font-size: 1.5rem;
  font-weight: normal;
  margin: 0;
}
.proyecto__sub {
  color: var(--muted);
  font-size: 0.9rem;
}
.proyecto__mirilla {
  width: 80%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  margin: 0.5rem auto 1rem;
  background: #111;
  view-transition-name: mirilla;
}
.proyecto__synopsis {
  font-style: italic;
  color: var(--muted);
}
.proyecto__text {
  line-height: 1.55;
}
.proyecto__creditos li {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  gap: 0.5rem;
}
.proyecto__creditos li::before {
  content: "·";
}
.proyecto__gallery {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}
.proyecto__gallery img {
  width: 100%;
  height: auto;
}
.proyecto__back {
  margin-top: 2rem;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  align-self: flex-start;
  color: var(--accent);
}

/* ==============================================================
   DESKTOP (>= 900px): per home_ordenador.png
   bio to the left, wheel centred bigger, synopsis + link to the right
   ============================================================== */
@media (min-width: 900px) {
  :root {
    --wheel-size: min(60vmin, 620px);
    --mirilla-size: 28%;
    --pointer-base: 44px;
    --pad-x: 2rem;
  }

  /* single-viewport layout: wheel centred, texts pinned to the bottom corners */
  .home {
    min-height: calc(100dvh - var(--header-h));
    overflow: hidden;  /* nothing below the first viewport on desktop */
    padding-bottom: 0;
  }

  /* project-info flattened so bio + synopsis + view-project pin independently */
  .project-info {
    display: contents;
  }
  .bio-frag {
    position: absolute;
    left: var(--pad-x);
    bottom: 1.5rem;
    max-width: 22rem;
    font-size: 0.9rem;
    padding: 0;
  }
  .synopsis {
    position: absolute;
    right: var(--pad-x);
    bottom: calc(1.5rem + 2.5rem);  /* leaves room for view-project below */
    max-width: 22rem;
    font-size: 0.9rem;
    text-align: right;
    padding: 0;
  }
  .view-project {
    position: absolute;
    right: var(--pad-x);
    bottom: 1.5rem;
    text-align: right;
  }

  .proyecto__article {
    max-width: 64rem;
    margin: 0;
  }
}

/* tiny helper */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ==============================================================
   VIEW TRANSITIONS
   Cross-fade between home ↔ project, with the mirilla morphing
   continuously between its wheel-centre and project-header slots.
   ============================================================== */
@keyframes vt-fade-in  { from { opacity: 0 } }
@keyframes vt-fade-out { to   { opacity: 0 } }

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 420ms;
  animation-timing-function: var(--ease);
}
::view-transition-old(root) { animation-name: vt-fade-out; }
::view-transition-new(root) { animation-name: vt-fade-in; }

::view-transition-old(mirilla),
::view-transition-new(mirilla) {
  animation-duration: 520ms;
  animation-timing-function: var(--ease);
  mix-blend-mode: normal;
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-old(mirilla),
  ::view-transition-new(mirilla) {
    animation-duration: 1ms;
  }
}