/* ============================================
   G.oat — Greatest of All Time
   Core stylesheet
   ============================================ */

:root {
  --ink: #0F0F0F;
  --ink-90: #1a1a1a;
  --ink-70: #3a3a3a;
  --paper: #FFFFFF;
  --paper-warm: #FAF8F5;
  --gray-60: #6B6B6B;
  --gray-30: #B8B8B8;
  --gray-10: #E5E5E5;
  --gray-05: #F2F2F2;
  --accent: #FF5A1F;
  --accent-ink: #E84A0F;

  --serif: 'Playfair Display', 'Cormorant Garamond', 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --jp: 'Noto Sans JP', 'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --max: 1440px;
  --gutter: clamp(24px, 4vw, 80px);
  --section-pad: clamp(96px, 14vw, 180px);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html, body { margin: 0; padding: 0; }

html {
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--jp);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  word-break: keep-all;
  overflow-wrap: anywhere;
  line-break: strict;
}

body.dark-mode {
  background: var(--ink);
  color: var(--paper);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--accent); color: var(--paper); }

/* ---------- Typography ---------- */

.serif { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; }
.sans { font-family: var(--sans); letter-spacing: 0; }
.mono { font-family: var(--mono); letter-spacing: 0; }

h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.15; }

.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gray-60);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.eyebrow.no-rule::before { display: none; }

/* ---------- Layout ---------- */

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}

section { position: relative; }

/* ---------- Nav ---------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), color 0.4s var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--gray-10);
}
.nav.inverted {
  background: rgba(15,15,15,0.72);
  color: var(--paper);
  border-bottom-color: rgba(255,255,255,0.08);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.01em;
  font-weight: 500;
}
.nav-brand svg { width: 28px; height: 28px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-links a {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: 6px 0;
}
.nav-links a .jp {
  font-family: var(--jp);
  font-size: 12px;
  display: block;
  color: var(--gray-60);
  margin-top: 2px;
  font-weight: 400;
}
.nav.inverted .nav-links a .jp { color: var(--gray-30); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.4s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-cta {
  padding: 10px 18px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.nav-cta:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.nav.inverted .nav-cta:hover { background: var(--paper); color: var(--ink); }

.nav-burger {
  display: none;
  width: 32px; height: 32px;
  position: relative;
}
.nav-burger span {
  position: absolute;
  left: 4px; right: 4px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav-burger span:nth-child(1) { top: 11px; }
.nav-burger span:nth-child(2) { top: 20px; }
.nav-burger.open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { transform: translateY(-5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--ink);
  color: var(--paper);
  z-index: 90;
  transform: translateY(-100%);
  transition: transform 0.5s var(--ease);
  display: flex;
  flex-direction: column;
  padding: 88px var(--gutter) 48px;
  overflow-y: auto;
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.mobile-menu-links a {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.mobile-menu-links a .label {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
}
.mobile-menu-links a .jp {
  font-family: var(--jp);
  font-size: 12px;
  color: var(--gray-30);
  letter-spacing: 0.1em;
}
.mobile-menu-links a .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
}
.mobile-menu-footer {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--gray-30);
  font-size: 12px;
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-burger { display: block; }
}

/* ---------- Buttons ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 20px 28px;
  font-family: var(--jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 0;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
  overflow: hidden;
  white-space: nowrap;
}
.btn .arrow {
  display: inline-block;
  transition: transform 0.4s var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn:hover .arrow { transform: translateX(6px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

.btn-outline-light {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
}
.btn-outline-light:hover { background: var(--accent); border-color: var(--accent); }

/* ---------- Accent rule ---------- */

.rule {
  display: block;
  width: 64px;
  height: 1px;
  background: var(--accent);
  margin: 32px 0;
}
.rule-vert {
  width: 1px;
  height: 64px;
  background: var(--accent);
}

/* ---------- Footer ---------- */

.footer {
  background: var(--ink);
  color: var(--paper);
  padding: 120px var(--gutter) 48px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 80px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .mark {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--serif);
  font-size: 22px;
  margin-bottom: 20px;
}
.footer-brand .mark svg { width: 36px; height: 36px; color: var(--accent); }
.footer-brand p {
  color: var(--gray-30);
  font-size: 12px;
  line-height: 1.9;
  max-width: 280px;
}
.footer-col h5 {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 500;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-col li a {
  font-size: 13px;
  color: var(--gray-30);
  transition: color 0.2s var(--ease);
}
.footer-col li a:hover { color: var(--paper); }

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 11px;
  color: var(--gray-30);
  font-family: var(--mono);
}
.footer-bottom .links { display: flex; gap: 20px; }

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    padding-bottom: 48px;
    gap: 32px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

/* ---------- Responsive line breaks (mobile-only / pc-only) ---------- */
.br-sp { display: none; }
@media (max-width: 860px) {
  .br-sp { display: inline; }
  .br-pc { display: none; }
}

/* ---------- Brand goat mark (raster) ---------- */
.brand-goat { display: block; }
.nav.inverted .brand-goat { filter: brightness(0) invert(1); }
.footer-goat { filter: brightness(0) invert(1); }

/* ---------- Page transition: walking goat loader ---------- */
.goat-loader {
  position: fixed;
  inset: 0;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}
.goat-loader.on { opacity: 1; pointer-events: all; }
.goat-loader img {
  height: 64px;
  width: auto;
  animation: goat-walk 0.45s ease-in-out infinite;
}
@keyframes goat-walk {
  0%, 100% { transform: translateY(0) rotate(-2.5deg); }
  50% { transform: translateY(-7px) rotate(2.5deg); }
}
.goat-road {
  width: 130px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 10px, transparent 10px 20px);
  animation: goat-road-move 0.45s linear infinite;
}
@keyframes goat-road-move {
  from { background-position: 0 0; }
  to { background-position: -20px 0; }
}
.goat-loading-text {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--gray-60);
}
@media (prefers-reduced-motion: reduce) {
  .goat-loader { display: none; }
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--delay, 0ms);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left { transform: translateX(-40px); }
.reveal-left.in { transform: translateX(0); }
.reveal-right { transform: translateX(40px); }
.reveal-right.in { transform: translateX(0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right {
    opacity: 1; transform: none; transition: none;
  }
}

/* ---------- Page scaffolding ---------- */

main { padding-top: 0; }

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--gray-10);
  border-bottom: 1px solid var(--gray-10);
  padding: 24px 0;
  position: relative;
}
.marquee-track {
  display: flex;
  width: max-content;
  white-space: nowrap;
  animation: marquee 35s linear infinite;
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 56px);
  font-style: italic;
  color: var(--ink);
  font-weight: 400;
}
.marquee-track > span { padding-right: 60px; }
.marquee-track.slow { animation-duration: 36s; }
@media (max-width: 700px) {
  .marquee-track { animation-duration: 16s; }
  .marquee-track.slow { animation-duration: 19s; }
}
.marquee-track .dot { color: var(--accent); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Chrome noise overlay (optional subtle texture) ---------- */
.grain::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.04;
  mix-blend-mode: multiply;
}

/* ---------- Media placeholder ---------- */
.placeholder {
  background:
    repeating-linear-gradient(135deg, var(--gray-05) 0 12px, var(--paper-warm) 12px 24px);
  border: 1px solid var(--gray-10);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 16px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--gray-60);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-height: 280px;
}

/* ---------- Utility ---------- */
.mono-small {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gray-60);
}
.orange { color: var(--accent); }
.ink { color: var(--ink); }
.center { text-align: center; }

/* ---------- Tweaks panel ---------- */
.tweaks-panel {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 500;
  width: 300px;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  font-family: var(--sans);
  font-size: 12px;
  display: none;
}
.tweaks-panel.open { display: block; }
.tweaks-panel h4 {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 4px;
}
.tweaks-panel .sub {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--gray-60);
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}
.tweak-group { margin-bottom: 18px; }
.tweak-group label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-60);
  margin-bottom: 8px;
}
.tweak-options {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.tweak-chip {
  padding: 6px 10px;
  border: 1px solid var(--gray-10);
  border-radius: 0;
  font-size: 11px;
  background: var(--paper);
  color: var(--ink);
  transition: all 0.2s var(--ease);
}
.tweak-chip.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.tweak-swatch {
  width: 28px; height: 28px;
  border: 1px solid var(--gray-10);
  padding: 0;
}
.tweak-swatch.active { outline: 2px solid var(--ink); outline-offset: 2px; }