/* ==========================================================================
   rational.group  v2  —  Japanese-minimal, karesansui card grid
   Palette: Rice Paper #F5F0E8 · Warm Clay #E8DFD0 · Earth Brown #5C4A38
            Earth Moss #6B8B5E · Stone Gray #8B8178 · Tatami Gold #C8A868
            Pool Teal #5B9EA8 · White #FFFFFF
   Fonts:  Zen Kaku Gothic New (headlines) · Zen Old Mincho (body)
            Zen Maru Gothic (labels)
   ========================================================================== */

:root {
  --rice-paper: #F5F0E8;
  --warm-clay:  #E8DFD0;
  --earth-brown:#5C4A38;
  --earth-moss: #6B8B5E;
  --stone-gray: #8B8178;
  --tatami-gold:#C8A868;
  --pool-teal:  #5B9EA8;
  --white:      #FFFFFF;

  --font-head: "Zen Kaku Gothic New", "Inter", system-ui, sans-serif;
  --font-body: "Zen Old Mincho", Georgia, serif;
  --font-label:"Zen Maru Gothic", "Inter", system-ui, sans-serif;

  --gap: 48px;
  --max-w: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--warm-clay);
  color: var(--earth-brown);
  font-family: var(--font-body);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; }

/* ==========================================================================
   Engawa Entrance (100vh)
   ========================================================================== */
.engawa {
  position: relative;
  min-height: 100vh;
  background: var(--warm-clay);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 0 8vw 22vh;
}

.engawa-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(107,139,94,0.05), transparent 55%),
    radial-gradient(circle at 12% 82%, rgba(200,168,104,0.05), transparent 60%);
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  top: 8%;
  right: 6%;
  width: clamp(220px, 32vw, 460px);
  height: auto;
  fill: var(--earth-moss);
  opacity: 0;
  animation: hero-blob-fade 1.5s ease 0.5s forwards,
             blob-drift 9s ease-in-out 2s infinite;
}

@keyframes hero-blob-fade {
  to { opacity: 0.2; }
}

@keyframes blob-drift {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(5px, -4px); }
}

/* Wordmark block sits at lower-third intersection */
.wordmark-block {
  position: relative;
  z-index: 2;
  max-width: 540px;
  opacity: 0;
  animation: wordmark-fade 0.8s ease 1s forwards;
}

@keyframes wordmark-fade {
  to { opacity: 1; }
}

.wordmark-label {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--stone-gray);
  margin-bottom: 18px;
  padding-left: 28px;
  position: relative;
}
.wordmark-label::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 18px; height: 1px;
  background: var(--stone-gray);
}

.wordmark {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(34px, 5.4vw, 64px);
  letter-spacing: 0.02em;
  margin: 0 0 14px;
  color: var(--earth-brown);
  line-height: 1.05;
}

.wordmark-tagline {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--earth-brown);
  opacity: 0.78;
  margin: 0;
  max-width: 380px;
}

/* Engawa shadow line (subtle) */
.engawa-shadow {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 4px;
  background: linear-gradient(to bottom, rgba(92,74,56,0.08), transparent);
  pointer-events: none;
}

/* ==========================================================================
   Koi fish — slow swimmer
   ========================================================================== */
.koi {
  position: absolute;
  width: 56px;
  height: 28px;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
}

.koi .koi-body { fill: var(--pool-teal); }
.koi .koi-tail { fill: var(--pool-teal); opacity: 0.85; }
.koi .koi-fin  { fill: none; stroke: var(--tatami-gold); stroke-width: 1.6; opacity: 0.8; }
.koi .koi-eye  { fill: var(--earth-brown); }

.koi-1 {
  top: 38%;
  left: -120px;
  animation: koi-fade 1s ease 0.8s forwards,
             swim-1 28s linear 1s infinite;
}

.koi-2 {
  top: auto;
  bottom: 22vh;
  left: -120px;
  width: 44px;
  height: 22px;
  animation: koi-fade 1s ease 1.2s forwards,
             swim-2 32s linear 1.5s infinite;
}
.koi-2 .koi-body { fill: var(--tatami-gold); }
.koi-2 .koi-tail { fill: var(--tatami-gold); }
.koi-2 .koi-fin  { stroke: var(--pool-teal); }

@keyframes koi-fade {
  to { opacity: 0.85; }
}

@keyframes swim-1 {
  0%   { transform: translateX(-50px) skewX(0deg); }
  25%  { transform: translateX(25vw)  skewX(2deg); }
  50%  { transform: translateX(50vw)  skewX(0deg); }
  75%  { transform: translateX(75vw)  skewX(-2deg); }
  100% { transform: translateX(110vw) skewX(0deg); }
}

@keyframes swim-2 {
  0%   { transform: translateX(-60px) skewX(0deg); }
  25%  { transform: translateX(28vw)  skewX(-2deg); }
  50%  { transform: translateX(56vw)  skewX(0deg); }
  75%  { transform: translateX(82vw)  skewX(2deg); }
  100% { transform: translateX(120vw) skewX(0deg); }
}

/* ==========================================================================
   Stone Garden Grid
   ========================================================================== */
.stone-garden {
  background: var(--warm-clay);
  padding: 120px 6vw 140px;
  position: relative;
}

.garden-header {
  max-width: 720px;
  margin: 0 auto 80px;
  text-align: left;
}

.section-label {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: lowercase;
  color: var(--earth-moss);
  margin-bottom: 18px;
}

.garden-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 38px);
  letter-spacing: 0.02em;
  color: var(--earth-brown);
  margin: 0 0 14px;
  line-height: 1.18;
}

.garden-lede {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--earth-brown);
  opacity: 0.85;
  margin: 0;
  max-width: 540px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  max-width: var(--max-w);
  margin: 80px auto 0;
}

.card {
  position: relative;
  padding: 38px 28px 34px;
  background: var(--rice-paper);
  border-radius: 2px;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.8s ease, transform 0.6s ease;
}

.card:nth-child(even)  { background: var(--white); }
.card:nth-child(3n)    { background: var(--rice-paper); }
.card:nth-child(6n)    { background: var(--white); }

.card.in-view { opacity: 1; }

.card-blob {
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 160px;
  height: 160px;
  fill: var(--earth-moss);
  opacity: 0.15;
  pointer-events: none;
  animation: blob-drift 8s ease-in-out infinite;
}
.card:nth-child(2) .card-blob { animation-delay: -1s; right: auto; left: -30px; }
.card:nth-child(3) .card-blob { animation-delay: -2s; bottom: auto; top: -30px; }
.card:nth-child(4) .card-blob { animation-delay: -3s; }
.card:nth-child(5) .card-blob { animation-delay: -4s; right: auto; left: -20px; bottom: -40px; }
.card:nth-child(6) .card-blob { animation-delay: -5s; }
.card:nth-child(7) .card-blob { animation-delay: -6s; right: -40px; bottom: auto; top: -20px; }
.card:nth-child(8) .card-blob { animation-delay: -2.5s; }

.card-index {
  display: block;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--tatami-gold);
  margin-bottom: 14px;
  text-transform: lowercase;
}

.card-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: 0.02em;
  margin: 0 0 14px;
  color: var(--earth-brown);
  line-height: 1.25;
  position: relative;
  z-index: 2;
}

.card-text {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.2vw, 16px);
  line-height: 1.85;
  margin: 0;
  color: var(--earth-brown);
  opacity: 0.88;
  position: relative;
  z-index: 2;
}

.card:hover .card-blob { opacity: 0.22; }
.card:hover .card-title { color: var(--earth-moss); }

/* ==========================================================================
   Tokonoma Feature — single statement alcove
   ========================================================================== */
.tokonoma {
  position: relative;
  min-height: 80vh;
  background: var(--rice-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  overflow: hidden;
  padding: 200px 8vw;
}

.tokonoma-blob {
  position: absolute;
  width: clamp(420px, 50vw, 720px);
  height: auto;
  fill: var(--earth-moss);
  opacity: 0.08;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: blob-drift 12s ease-in-out infinite;
  pointer-events: none;
}

.tokonoma-inner {
  position: relative;
  z-index: 2;
  max-width: 480px;
  text-align: center;
  opacity: 0;
  transition: opacity 1s ease;
}
.tokonoma-inner.in-view { opacity: 1; }

.tokonoma-mark {
  display: block;
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 56px;
  color: var(--tatami-gold);
  margin-bottom: 32px;
  line-height: 1;
}

.tokonoma-line {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: 0.02em;
  line-height: 1.55;
  color: var(--earth-brown);
  margin: 0 0 28px;
}

.tokonoma-attrib {
  display: block;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--stone-gray);
  text-transform: lowercase;
}

/* ==========================================================================
   River Divider
   ========================================================================== */
.river {
  width: 100%;
  height: 80px;
  background: var(--rice-paper);
  line-height: 0;
}

.river svg {
  width: 100%;
  height: 80px;
}

.river path {
  fill: var(--earth-moss);
  opacity: 0.42;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--earth-brown);
  color: var(--rice-paper);
  padding: 80px 8vw 60px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px 48px;
  align-items: end;
}

.footer-mark {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.wordmark-small {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: 0.02em;
  color: var(--rice-paper);
}

.footer-sub {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--rice-paper);
  opacity: 0.7;
}

.footer-nav {
  display: flex;
  gap: 28px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: lowercase;
}

.footer-nav a {
  color: var(--rice-paper);
  text-decoration: none;
  opacity: 0.78;
  transition: opacity 0.4s ease, color 0.4s ease;
}

.footer-nav a:hover {
  color: var(--tatami-gold);
  opacity: 1;
}

.footer-line {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(245, 240, 232, 0.18);
  padding-top: 28px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: lowercase;
  color: var(--rice-paper);
  opacity: 0.55;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .engawa { padding: 0 7vw 18vh; }
  .stone-garden { padding: 90px 6vw 110px; }
  .tokonoma { padding: 140px 7vw; }
}

@media (max-width: 620px) {
  .grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-inner { grid-template-columns: 1fr; align-items: start; }
  .footer-nav { flex-wrap: wrap; }
  .hero-blob  { width: 70vw; top: 6%; right: -10%; }
  .wordmark   { font-size: clamp(28px, 8vw, 44px); }
  .stone-garden { padding: 70px 6vw 90px; }
  .garden-header { margin-bottom: 50px; }
  .grid { margin-top: 50px; }
  .card { padding: 30px 22px; }
  .tokonoma { padding: 110px 7vw; min-height: 70vh; }
  .tokonoma-line { font-size: clamp(18px, 5vw, 24px); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-blob,
  .card-blob,
  .tokonoma-blob,
  .koi-1, .koi-2 {
    animation: none !important;
  }
  .hero-blob { opacity: 0.18; }
  .koi-1, .koi-2 { opacity: 0.7; }
}