/* ==========================================================================
   Perk · café con proteína en lata — réplica de PERKFORM (video corto)
   Secciones: variables · base · header · hero pinned (capa clara / halo /
   capa oscura = sección 2) · carrusel de sabores · footer · canvas 3D ·
   responsive · reduced-motion
   ========================================================================== */

/* ---------- Variables ---------- */
:root {
  /* Paleta (hex anotados en la referencia) */
  --cream: #ece6d8;        /* fondo hero */
  --cream-2: #efe9dc;      /* fondo carrusel */
  --cream-3: #e3dbc9;      /* números fantasma */
  --ink: #111111;          /* negro texto / PERK */
  --lime: #c8f542;         /* K del wordmark, acentos */
  --lime-cream: #dfe7a8;   /* itálica de la sección oscura */
  --dark: #1c1d18;         /* fondo sección oscura */
  --dark-2: #121310;       /* interior del lente */
  --olive: #6e7d3a;        /* glow radial detrás de la lata */
  --orange: #e4562b;       /* punto del nombre de sabor, banda de la lata */
  --caramel: #c8a06e;      /* lata 03 */
  --gray-text: #6f6c64;    /* subtítulos serif itálica */
  --line: rgba(17, 17, 17, 0.18);

  /* Tipografía */
  --font-black: "Archivo Black", "Archivo", Impact, "Arial Black", sans-serif;
  --font-sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", Georgia, serif;

  /* Easings */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);

  /* Estado del lente (los escribe app.js en px) */
  --mx: 50vw;
  --my: 55vh;
  --r: 24vw;
  --r0: 24vw;
  --gx: 50vw;
  --gy: 55vh;
  --halo-op: 1;
  --sec2: 0; /* progreso de entrada del texto de la sección 2 */
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}
.lime {
  color: var(--lime);
}
.overline {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ---------- Header (fijo; entra en la sección 2) ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px 3.3vw;
  color: var(--cream);
  transform: translateY(-110%);
  opacity: 0;
  transition:
    transform 0.7s var(--ease-out),
    opacity 0.5s var(--ease-out),
    color 0.3s;
}
.site-header.is-shown {
  transform: none;
  opacity: 1;
}
.site-header.is-light {
  color: var(--ink);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-black);
  font-size: 15px;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 22px;
  height: 22px;
  display: inline-block;
}
.brand-mark svg {
  width: 100%;
  height: 100%;
  display: block;
}
.brand-mark circle {
  fill: currentColor;
}
.brand-mark .bolt {
  fill: var(--cream);
}
.site-header.is-light .brand-mark .bolt,
.site-footer .brand-mark .bolt {
  fill: var(--ink);
}
.site-header.is-light .brand-mark circle {
  fill: var(--ink);
}
.site-header.is-light .brand-mark .bolt {
  fill: var(--cream);
}
.site-nav {
  display: flex;
  gap: 28px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.site-nav a,
.explore {
  opacity: 0.85;
  transition: opacity 0.3s;
}
.site-nav a:hover,
.explore:hover {
  opacity: 1;
}
.explore {
  justify-self: end;
  font-size: 12px;
  font-weight: 500;
}

/* ---------- Hero pinned ---------- */
.hero-pin {
  height: 300vh;
  position: relative;
}
.hero-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

/* Capa clara */
.hero-light {
  position: absolute;
  inset: 0;
  background: var(--cream);
  z-index: 1;
}
.wordmark-row {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 0.15em;
  white-space: nowrap;
  font-size: clamp(64px, 15vw, 230px);
}
.logo-mark {
  width: 0.92em;
  height: 0.92em;
  flex: none;
}
.logo-mark svg {
  width: 100%;
  height: 100%;
  display: block;
}
.logo-mark circle {
  fill: var(--ink);
}
.logo-mark .bolt {
  fill: #fff;
}
.wordmark {
  font-family: var(--font-black);
  font-weight: 400;
  font-size: 1em;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.corner {
  position: absolute;
  bottom: 30px;
  line-height: 1.3;
}
.corner-left {
  left: 3.3vw;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
}
.corner-right {
  right: 3.3vw;
  text-align: right;
  font-size: 9px;
  letter-spacing: 0.16em;
  font-weight: 500;
}
.corner-center {
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 9px;
  letter-spacing: 0.22em;
  font-weight: 500;
}
.scroll-dot {
  width: 9px;
  height: 9px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  animation: dot-pulse 1.8s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%,
  100% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(4px);
    opacity: 0.5;
  }
}
.lens-static {
  display: none;
}

/* Halo crema difuso alrededor del lente (box-shadow no funciona con clip-path) */
.lens-halo {
  position: absolute;
  left: var(--mx);
  top: var(--my);
  width: calc(var(--r) * 2 + 12vw);
  height: calc(var(--r) * 2 + 12vw);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: rgba(255, 251, 240, 0.75);
  filter: blur(40px);
  opacity: var(--halo-op);
  z-index: 2;
  pointer-events: none;
}

/* Capa oscura recortada por el lente = sección 2 cuando llena la pantalla */
.hero-dark {
  position: absolute;
  inset: 0;
  z-index: 3;
  color: var(--cream);
  background:
    radial-gradient(
      ellipse 30vw 38vw at var(--gx) var(--gy),
      rgba(120, 138, 62, 0.62) 0%,
      rgba(80, 92, 40, 0.34) 32%,
      rgba(40, 44, 24, 0.12) 58%,
      transparent 78%
    ),
    var(--dark);
  clip-path: circle(var(--r) at var(--mx) var(--my));
}

/* Sección 2: texto izquierda (x 8–40 %), lata derecha (x 57–72 %, y 20–75 %) */
.morning {
  position: absolute;
  left: 8vw;
  top: 50%;
  width: 34vw;
  transform: translateY(-50%);
}
.morning > * {
  --k: clamp(0, (var(--sec2) - var(--d)) / (1 - var(--d)), 1);
  opacity: var(--k);
  transform: translateY(calc((1 - var(--k)) * 26px));
}
.morning .overline {
  color: rgba(236, 230, 216, 0.6);
  margin-bottom: 22px;
}
.morning-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(40px, 4.45vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.01em;
}
.morning-title em {
  font-style: italic;
  color: var(--lime-cream);
}
.morning-lead {
  margin-top: 26px;
  font-size: 15px;
  line-height: 1.5;
  color: rgba(236, 230, 216, 0.72);
}
.line-link {
  display: inline-block;
  margin-top: 30px;
  padding-bottom: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(236, 230, 216, 0.55);
  transition: border-color 0.3s;
}
.line-link:hover {
  border-color: var(--lime);
}
.can-slot-morning {
  position: absolute;
  left: 57%;
  width: 15%;
  top: 20%;
  height: 55%;
}
.foot-note {
  position: absolute;
  right: 3.3vw;
  bottom: 30px;
  font-size: 9px;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: rgba(236, 230, 216, 0.75);
  --k: clamp(0, (var(--sec2) - var(--d)) / (1 - var(--d)), 1);
  opacity: var(--k);
}

/* ---------- Slots de lata (three.js dibuja encima; fallback = foto) ---------- */
.can-slot {
  position: relative;
  overflow: hidden;
}
.can-fallback {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 54%;
  transform: scale(1.45);
  transform-origin: 50% 55%;
}
.can-slot-hero {
  display: none;
  position: absolute;
  left: var(--mx);
  top: calc(var(--my) - var(--r0) * 0.075);
  height: calc(var(--r0) * 1.5);
  aspect-ratio: 0.44;
  transform: translate(-50%, -50%);
  opacity: clamp(0, 1 - var(--sec2) * 3, 1);
}
html.no-webgl .can-slot-hero {
  display: block;
}
html.no-webgl .can-fallback {
  display: block;
}
html.no-webgl [data-flavor="vainilla"] .can-fallback {
  filter: brightness(1.12) saturate(0.6);
}
html.no-webgl [data-flavor="caramelo"] .can-fallback {
  filter: sepia(0.7) saturate(1.5) brightness(0.92);
}
html.no-webgl .can-slot-morning .can-fallback {
  filter: brightness(0.45) contrast(1.2) saturate(0.4);
}
html.no-webgl .scene {
  display: none;
}

/* ---------- Sección 3 · carrusel de sabores ---------- */
.flavors {
  position: relative;
  min-height: 100vh;
  background: var(--cream-2);
  padding: 110px 3.3vw 56px 8vw;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.flavors-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 44px;
}
.flavors .overline {
  color: #7a766c;
  margin-bottom: 10px;
}
.flavors-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(30px, 2.8vw, 42px);
  line-height: 1;
  letter-spacing: -0.01em;
}
.counter {
  font-size: 12px;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: #7a766c;
}
.flavors-body {
  flex: 1;
  display: grid;
  grid-template-columns: 37vw 1fr;
  gap: 4vw;
  align-items: stretch;
  min-height: 480px;
}

/* Textos con crossfade */
.flavor-texts {
  position: relative;
  min-height: 460px;
}
.flavor-text {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s var(--ease-inout);
  pointer-events: none;
}
.flavor-text.is-active {
  opacity: 1;
  pointer-events: auto;
}
.product-code {
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: #55524a;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}
.flavor-name {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(52px, 5vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.015em;
}
.flavor-name .dot {
  color: var(--orange);
}
.flavor-sub {
  margin-top: 14px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 20px;
  color: var(--gray-text);
}
.flavor-copy {
  margin-top: 22px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.6;
  color: #3d3b35;
}
.spec-table {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}
.spec-table div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.spec-table dt {
  font-family: var(--font-serif);
  font-size: 18px;
}
.spec-table dd {
  font-size: 9px;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: #55524a;
}
.made-for {
  margin-top: 22px;
  font-size: 9px;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: #55524a;
}
.made-for span {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0;
  font-weight: 400;
  text-transform: none;
  color: var(--ink);
}

/* Escenario horizontal */
.flavor-stage {
  position: relative;
  overflow: hidden;
  cursor: grab;
  user-select: none;
  touch-action: pan-y;
  border-radius: 8px;
}
.flavor-stage.is-dragging {
  cursor: grabbing;
}
.flavor-track {
  display: flex;
  height: 100%;
  transform: translateX(calc(var(--slide, 0) * -100%));
  transition: transform 0.7s var(--ease-inout);
}
.flavor-stage.is-dragging .flavor-track {
  transition: none;
}
.flavor-slide {
  position: relative;
  flex: 0 0 100%;
  height: 100%;
  display: grid;
  place-items: center;
  opacity: 0.45;
  transition: opacity 0.7s var(--ease-inout);
}
.flavor-slide.is-active {
  opacity: 1;
}
.ghost {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -52%);
  font-family: var(--font-serif);
  font-size: clamp(220px, 34vw, 520px);
  line-height: 1;
  color: var(--cream-3);
  letter-spacing: -0.04em;
  pointer-events: none;
}
.can-slot-flavor {
  width: 34%;
  max-width: 200px;
  aspect-ratio: 0.37;
  max-height: 88%;
  margin-top: -3%;
}
.can-shadow {
  position: absolute;
  left: 50%;
  bottom: 7%;
  width: 34%;
  height: 22px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(17, 17, 17, 0.22), transparent 70%);
  filter: blur(4px);
}
.drag-hint {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  font-size: 9px;
  letter-spacing: 0.22em;
  font-weight: 500;
  color: #7a766c;
}
.flavor-pages {
  display: flex;
  justify-content: flex-end;
  gap: 22px;
  margin-top: 26px;
  font-size: 11px;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}
.flavor-pages button {
  color: #9a968c;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition:
    color 0.3s,
    border-color 0.3s;
}
.flavor-pages button.is-active {
  color: var(--ink);
  border-color: var(--ink);
}

/* ---------- Footer (inferido) ---------- */
.site-footer {
  background: var(--dark);
  color: var(--cream);
  padding: 44px 3.3vw 30px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "brand line nav"
    "copy copy copy";
  align-items: center;
  gap: 18px 40px;
}
.site-footer .brand {
  grid-area: brand;
}
.site-footer .brand-mark circle {
  fill: var(--cream);
}
.footer-line {
  grid-area: line;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  color: rgba(236, 230, 216, 0.75);
}
.footer-nav {
  grid-area: nav;
  display: flex;
  gap: 24px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.footer-nav a {
  opacity: 0.75;
  transition: opacity 0.3s;
}
.footer-nav a:hover {
  opacity: 1;
}
.footer-copy {
  grid-area: copy;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(236, 230, 216, 0.45);
  padding-top: 18px;
  border-top: 1px solid rgba(236, 230, 216, 0.14);
}

/* ---------- Canvas three.js ---------- */
.scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 30;
  pointer-events: none;
  display: block;
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .site-nav {
    gap: 18px;
  }
  .flavors-body {
    grid-template-columns: 44vw 1fr;
  }
  .morning {
    width: 42vw;
  }
  .can-slot-morning {
    left: 60%;
    width: 22%;
    top: 24%;
    height: 50%;
  }
}
@media (max-width: 720px) {
  :root {
    --r0: 40vw;
  }
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 18px 5vw;
  }
  .site-nav {
    display: none;
  }
  .wordmark-row {
    font-size: 19vw;
    top: 42%;
  }
  .corner-left {
    left: 5vw;
    font-size: 14px;
  }
  .corner-right {
    right: 5vw;
    font-size: 8px;
  }
  .corner-center {
    bottom: 88px;
  }
  .morning {
    left: 5vw;
    width: 90vw;
    top: 13%;
    transform: none;
  }
  .morning-title {
    font-size: 38px;
  }
  .morning-lead {
    margin-top: 18px;
    font-size: 14px;
  }
  .can-slot-morning {
    left: 56%;
    width: 30%;
    top: 55%;
    height: 36%;
  }
  .foot-note {
    right: auto;
    left: 5vw;
    bottom: 22px;
  }
  .flavors {
    padding: 90px 5vw 40px;
    min-height: 0;
  }
  .flavors-head {
    margin-bottom: 26px;
  }
  .flavors-body {
    grid-template-columns: 1fr;
    gap: 20px;
    min-height: 0;
  }
  .flavor-texts {
    min-height: 470px;
  }
  .flavor-name {
    font-size: 52px;
  }
  .flavor-stage {
    height: 380px;
  }
  .can-slot-flavor {
    width: 40%;
    max-width: 130px;
  }
  .ghost {
    font-size: 220px;
  }
  .site-footer {
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "line"
      "nav"
      "copy";
    gap: 14px;
    padding: 36px 5vw 24px;
  }
}

/* ---------- Reduced motion: todo visible y quieto ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none;
    transition: none;
  }
  .hero-pin {
    height: auto;
  }
  .hero-stage {
    position: relative;
    height: auto;
    overflow: visible;
  }
  .hero-light {
    position: relative;
    height: 100vh;
  }
  .lens-halo {
    display: none;
  }
  .lens-static {
    display: block;
    position: absolute;
    left: 50%;
    top: 55%;
    width: calc(var(--r0) * 2);
    height: calc(var(--r0) * 2);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background:
      radial-gradient(ellipse 60% 70% at 50% 46%, rgba(120, 138, 62, 0.62) 0%, rgba(80, 92, 40, 0.34) 32%, transparent 78%),
      var(--dark-2);
    box-shadow: 0 0 60px 34px rgba(255, 251, 240, 0.7);
  }
  .hero-dark {
    position: relative;
    height: 100vh;
    clip-path: none;
    --gx: 64.5%;
    --gy: 47%;
    --sec2: 1;
  }
}