/* ════════════════════════════════════════════
   PLUTOPIA — Creative Hub
   Neutral shell for version review.
   Intentionally blank: no brand palette, no
   editorial voice. The versions speak for themselves.
   ════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

:root {
  --bg:      #F7F7F5;
  --surface: #FFFFFF;
  --text:    #1A1A1A;
  --muted:   #909090;
  --faint:   #E4E4E2;
  --border:  #D0D0CE;

  /* Swatch-only vars — do not use in hub chrome */
  --v2-neon:    #00C4A8;
  --font-serif: 'Cormorant Garamond', Georgia, serif;

  --font-sans: 'Inter', system-ui, sans-serif;
  --gutter:    clamp(1.25rem, 5vw, 4rem);
  --dur:       450ms;
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(0.875rem, 1.4vw, 0.9375rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: #1A1A1A; color: #F7F7F5; }


/* ── Gate ── */
.gate {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--bg);
  z-index: 800;
  transition: opacity var(--dur) var(--ease);
}

.gate.is-exiting { opacity: 0; pointer-events: none; }

.gate__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.75rem;
  padding: 1.5rem;
  animation: fade-up var(--dur) var(--ease) both;
}

.gate__brand {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text);
}

.gate__sub {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: -1rem;
}

.gate__form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: min(100%, 240px);
}

.gate__input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding-block: 0.5rem;
  text-align: center;
  outline: none;
  transition: border-color 200ms ease;
}

.gate__input::placeholder { color: var(--muted); }
.gate__input:focus { border-bottom-color: var(--text); }

.gate__btn {
  background: var(--text);
  border: none;
  color: var(--bg);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.55rem 1.5rem;
  transition: opacity 150ms ease;
}

.gate__btn:hover { opacity: 0.75; }

.gate__error {
  font-size: 0.78rem;
  color: #B00;
  min-height: 1.2em;
}


/* ── Hub wrapper ── */
.hub {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

.hub.is-visible { animation: fade-in var(--dur) var(--ease) both; }


/* ── Hub header ── */
.hub__header {
  border-block-end: 1px solid var(--faint);
  padding: 1.5rem var(--gutter);
}

.hub__header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.hub__breadcrumb {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hub__back {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition: color 150ms ease;
}

.hub__back:hover { color: var(--text); }

.hub__brand {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.hub__header-meta {
  text-align: right;
}

.hub__title {
  font-size: 0.78rem;
  color: var(--muted);
}

.hub__sub {
  font-size: 0.7rem;
  color: var(--muted);
  margin-block-start: 0.2rem;
}


/* ── Version cards ── */
.hub__main {
  flex: 1;
  padding: 0 var(--gutter);
}

.hub__divider {
  height: 1px;
  background: var(--faint);
}

.version-card {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 3.5rem;
  align-items: start;
  padding-block: 3.5rem;
}

/* Preview swatch */
.version-card__preview {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  flex-shrink: 0;
  transition: opacity 250ms ease;
}

.version-card__preview:hover { opacity: 0.9; }

.version-card__swatch {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  padding: 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* ── V1 swatch — pure dark Garamond, no decoration ── */
.version-card__swatch--v1 {
  background: #0A0908;
  border: 1px solid rgba(240, 237, 232, 0.06);
}

.version-card__swatch--v1 .swatch-brand {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  letter-spacing: 0.4em;
  color: #F0EDE8;
  font-weight: 300;
}

.version-card__swatch--v1 .swatch-tagline {
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(240, 237, 232, 0.3);
}

.version-card__swatch--v1 .swatch-bar {
  width: 60%;
  height: 1px;
  background: rgba(240, 237, 232, 0.08);
  margin-block: 0.5rem;
}

.version-card__swatch--v1 .swatch-join {
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: rgba(240, 237, 232, 0.2);
}

/* ── V2 swatch — neon on dark, manga panels ── */
.version-card__swatch--v2 {
  background: #060608;
  gap: 0.5rem;
}

.version-card__swatch--v2 .swatch-brand--v2 {
  font-family: 'Bangers', 'Inter', sans-serif;
  font-size: 2rem;
  letter-spacing: 0.18em;
  color: #E8E4DC;
  line-height: 1;
  text-shadow: 0 0 20px rgba(0, 196, 168, 0.4);
}

.swatch-panels {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2px;
  width: 100%;
  height: 60px;
  margin-block: 0.25rem;
}

.swatch-panel { background: #0E0E12; }
.swatch-panel--a { background: linear-gradient(135deg, #0E0E12, #1A1A22); }
.swatch-panel--b { background: linear-gradient(135deg, #12121A, #0E0E12); }
.swatch-panel--c { background: linear-gradient(135deg, #141420, #0E0E12); }

.version-card__swatch--v2 .swatch-neon {
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  color: var(--v2-neon);
  text-shadow: 0 0 8px rgba(0, 196, 168, 0.5);
  text-transform: uppercase;
}

/* ── V3 swatch — warm amber, Garamond-forward ── */
.version-card__swatch--v3 {
  background: #0A0805;
  border: 1px solid rgba(155, 120, 48, 0.12);
  gap: 0.6rem;
}

.version-card__swatch--v3 .swatch-eyebrow {
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #9B7830;
}

.version-card__swatch--v3 .swatch-brand--v3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: #EAE0CC;
  line-height: 1;
}

.version-card__swatch--v3 .swatch-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.75rem;
  line-height: 1.4;
  color: rgba(234, 224, 204, 0.5);
  max-width: 18ch;
}

.version-card__swatch--v3 .swatch-meta {
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(155, 120, 48, 0.5);
}


/* ── Card info ── */
.version-card__info {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding-block-start: 0.25rem;
}

.version-card__meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.version-num {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.version-tag {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.15em 0.5em;
}

.version-tag--current {
  border-color: var(--text);
  color: var(--text);
}

.version-card__name {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  line-height: 1.2;
}

.version-card__desc {
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 52ch;
}

.version-card__details {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.7;
}

.version-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  border-block-end: 1px solid var(--border);
  padding-block-end: 0.1rem;
  width: fit-content;
  margin-block-start: 0.25rem;
  transition: border-color 150ms ease, color 150ms ease;
}

.version-card__link:hover {
  border-block-end-color: var(--text);
}


/* ── Notes ── */
.notes {
  margin-block-start: 0.75rem;
  padding-block-start: 0.75rem;
  border-block-start: 1px solid var(--faint);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.notes__label {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.notes__textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--faint);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.83rem;
  font-weight: 400;
  line-height: 1.6;
  padding: 0.65rem 0.75rem;
  resize: vertical;
  outline: none;
  transition: border-color 150ms ease;
  min-height: 76px;
}

.notes__textarea::placeholder { color: var(--muted); }
.notes__textarea:focus { border-color: var(--border); }

.notes__status {
  font-size: 0.62rem;
  color: var(--muted);
  min-height: 1em;
}

.notes__status--saved { color: #1A1A1A; }


/* ── Hub footer ── */
.hub__footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.25rem var(--gutter);
  border-block-start: 1px solid var(--faint);
  font-size: 0.65rem;
  color: var(--muted);
}


/* ── Responsive ── */
@media (max-width: 800px) {
  .version-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .version-card__preview {
    max-width: 100%;
    aspect-ratio: 16 / 9;
  }

  .hub__header-inner { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .hub__header-meta { text-align: left; }
  .hub__footer { flex-direction: column; }
}


/* ── Keyframes ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0);    }
}

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