/* ============================================================
   AiEdict — Interior Design Studio
   Minimalist design system
   ============================================================ */

:root{
  --bg: #f6f4ef;
  --bg-alt: #efece3;
  --ink: #1c1b18;
  --ink-soft: #55524a;
  --line: #d8d3c6;
  --accent: #a9855f;
  --accent-soft: #cbb595;
  --dark: #1c1b18;
  --dark-ink: #f2efe6;

  --serif-en: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --serif-ja: 'Noto Serif JP', 'Cormorant Garamond', serif;
  --sans-en: 'Inter', 'Noto Sans JP', sans-serif;
  --sans-ja: 'Noto Sans JP', 'Inter', sans-serif;

  --ease: cubic-bezier(.16,.84,.44,1);
  --dur-s: .4s;
  --dur-m: .8s;
  --dur-l: 1.4s;

  --container: 1180px;
  --gutter: clamp(24px, 5vw, 72px);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html[data-lang="ja"] body{ font-family: var(--sans-ja); }
html[data-lang="en"] body{ font-family: var(--sans-en); }

body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,h2,h3{ margin:0; font-weight: 400; }
html[data-lang="ja"] h1, html[data-lang="ja"] h2, html[data-lang="ja"] h3{ font-family: var(--serif-ja); }
html[data-lang="en"] h1, html[data-lang="en"] h2, html[data-lang="en"] h3{ font-family: var(--serif-en); }

p{ margin:0; color: var(--ink-soft); }
a{ color: inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }
button{ font: inherit; background:none; border:none; cursor:pointer; color: inherit; }
ul{ list-style:none; margin:0; padding:0; }

/* language toggle visibility */
html[data-lang="ja"] .lang-en{ display:none; }
html[data-lang="en"] .lang-ja{ display:none; }
.lang-toggle .lang-opt{ opacity:.35; transition: opacity var(--dur-s) var(--ease); }
html[data-lang="ja"] .lang-toggle .lang-opt[data-set="ja"]{ opacity:1; }
html[data-lang="en"] .lang-toggle .lang-opt[data-set="en"]{ opacity:1; }

.section-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.br-desktop{ display:inline; }
@media (max-width: 720px){ .br-desktop{ display:none; } }

/* ============ custom cursor ============ */
.cursor-dot{
  position: fixed; top:0; left:0; width:10px; height:10px;
  border-radius:50%; background: var(--accent);
  pointer-events:none; z-index: 999;
  transform: translate(-50%,-50%);
  transition: width var(--dur-s) var(--ease), height var(--dur-s) var(--ease), background var(--dur-s) var(--ease), opacity var(--dur-s);
  opacity:0;
  mix-blend-mode: difference;
}
.cursor-dot.is-active{ opacity:1; }
.cursor-dot.is-hover{ width:36px; height:36px; background: var(--dark-ink); }
@media (hover:none), (max-width: 900px){ .cursor-dot{ display:none; } }

/* ============ scroll progress ============ */
.progress-bar{
  position: fixed; top:0; left:0; width:100%; height:2px; z-index: 998;
  background: transparent;
}
.progress-bar span{
  display:block; height:100%; width:0%;
  background: var(--accent);
  transition: width .1s linear;
}

/* ============ header ============ */
.site-header{
  position: fixed; top:0; left:0; width:100%; z-index: 500;
  padding: 26px 0;
  transition: padding var(--dur-s) var(--ease), background var(--dur-s) var(--ease), box-shadow var(--dur-s) var(--ease);
}
.site-header.is-scrolled{
  padding: 14px 0;
  background: rgba(246,244,239,.86);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
}
.header-inner{
  max-width: var(--container);
  margin:0 auto;
  padding: 0 var(--gutter);
  display:flex; align-items:center; justify-content:space-between;
}
.logo{
  font-family: var(--serif-en);
  font-size: 1.4rem;
  letter-spacing: .02em;
}
.logo-mark{ color: var(--accent); }

.main-nav{ display:flex; gap: clamp(18px, 2.4vw, 40px); }
.main-nav a{
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 3px;
}
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:0; width:100%; height:1px;
  background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform var(--dur-s) var(--ease);
}
.main-nav a:hover::after{ transform: scaleX(1); transform-origin: left; }

.header-actions{ display:flex; align-items:center; gap: 22px; }
.lang-toggle{
  font-size:.78rem; letter-spacing:.05em; display:flex; align-items:center; gap:6px;
}
.lang-sep{ opacity:.4; }

.menu-btn{ display:none; flex-direction:column; gap:5px; width:26px; }
.menu-btn span{ display:block; height:1px; width:100%; background: var(--ink); transition: transform var(--dur-s) var(--ease), opacity var(--dur-s); }

@media (max-width: 860px){
  .main-nav{
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 340px); height: 100vh;
    background: var(--dark); color: var(--dark-ink);
    flex-direction: column; justify-content:center; align-items:flex-start;
    gap: 26px; padding: 0 48px;
    transform: translateX(100%);
    transition: transform var(--dur-m) var(--ease);
    z-index: 450;
  }
  .main-nav.is-open{ transform: translateX(0); }
  .main-nav a{ font-size: 1.1rem; }
  .menu-btn{ display:flex; }
  body.nav-open{ overflow:hidden; }
}

/* ============ hero ============ */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center;
  padding: 140px var(--gutter) 100px;
  overflow:hidden;
}
.hero-bg{
  position:absolute; inset:0; z-index:0;
  display:flex; align-items:center; justify-content:center;
  color: var(--accent-soft);
  opacity:.5;
}
.hero-blob{ width: min(90vw, 900px); animation: spin 60s linear infinite; }
@keyframes spin{ to{ transform: rotate(360deg); } }

.hero-inner{ position:relative; z-index:1; max-width: 760px; }

.hero-eyebrow{
  text-transform: uppercase; letter-spacing:.22em; font-size:.75rem; color: var(--ink-soft);
  margin-bottom: 28px;
}

.hero-title{
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 1.15;
  font-weight: 400;
  margin-bottom: 30px;
}
.hero-title .line{ display:block; overflow:hidden; }
.hero-title .word{
  display:inline-block;
  transform: translateY(110%);
  animation: rise .9s var(--ease) forwards;
}
.hero-title .line:nth-child(1) .word{ animation-delay: .15s; }
.hero-title .line:nth-child(2) .word{ animation-delay: .3s; }
@keyframes rise{ to{ transform: translateY(0); } }

.hero-sub{
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  max-width: 560px; margin: 0 auto 44px;
}

.hero-cta{ display:flex; gap:18px; justify-content:center; flex-wrap:wrap; }

/* buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 15px 34px;
  font-size: .82rem; letter-spacing:.08em; text-transform:uppercase;
  border-radius: 999px;
  transition: transform var(--dur-s) var(--ease), background var(--dur-s) var(--ease), color var(--dur-s) var(--ease), border-color var(--dur-s) var(--ease);
}
.btn-line{ border: 1px solid var(--ink); }
.btn-line:hover{ background: var(--ink); color: var(--bg); }
.btn-ghost{ color: var(--ink-soft); }
.btn-ghost:hover{ color: var(--ink); }
.btn-solid{ background: var(--ink); color: var(--bg); border: 1px solid var(--ink); }
.btn-solid:hover{ background: transparent; color: var(--ink); }

.text-link{ display:inline-flex; align-items:center; gap:8px; font-size:.85rem; letter-spacing:.03em; border-bottom: 1px solid var(--ink); padding-bottom:2px; }
.text-link .arrow{ transition: transform var(--dur-s) var(--ease); }
.text-link:hover .arrow{ transform: translateX(6px); }

.scroll-cue{
  position:absolute; bottom: 34px; left:50%; transform: translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-size:.68rem; letter-spacing:.2em; color: var(--ink-soft);
}
.scroll-cue-line{
  width:1px; height: 44px; background: var(--line); position:relative; overflow:hidden;
}
.scroll-cue-line::after{
  content:''; position:absolute; top:-100%; left:0; width:100%; height:100%;
  background: var(--ink); animation: scrollcue 2.2s ease-in-out infinite;
}
@keyframes scrollcue{ 0%{ top:-100%; } 60%{ top:100%; } 100%{ top:100%; } }

/* ============ marquee ============ */
.marquee{
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow:hidden; white-space:nowrap; padding: 22px 0;
  background: var(--bg-alt);
}
.marquee-track{
  display:inline-flex; gap: 18px;
  font-family: var(--serif-en);
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  animation: marquee 26s linear infinite;
  color: var(--ink-soft);
}
.marquee-track span{ padding: 0 6px; }
@keyframes marquee{ from{ transform: translateX(0); } to{ transform: translateX(-50%); } }

/* ============ reveal on scroll ============ */
[data-reveal]{
  opacity:0; transform: translateY(36px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
[data-reveal].in-view{ opacity:1; transform: translateY(0); }

/* ============ generic sections ============ */
section{ padding: clamp(80px, 12vw, 160px) 0; position:relative; }

.section-index{
  font-size:.78rem; letter-spacing:.14em; text-transform:uppercase;
  color: var(--accent); margin-bottom: 20px;
}
.section-head h2{ font-size: clamp(2rem, 4vw, 3rem); }

/* ============ philosophy ============ */
.philosophy-grid{
  display:grid; grid-template-columns: 1.1fr .9fr; gap: clamp(30px, 6vw, 90px);
  margin-bottom: 90px;
}
.philosophy-lead{ font-size: clamp(1.7rem, 3.2vw, 2.5rem); line-height:1.4; }
.philosophy-body p{ margin-bottom: 26px; font-size: 1.02rem; }
@media (max-width: 860px){ .philosophy-grid{ grid-template-columns:1fr; } }

.stats{
  display:grid; grid-template-columns: repeat(4,1fr); gap: 30px;
  border-top: 1px solid var(--line); padding-top: 50px;
}
.stat{ text-align:left; }
.stat-num{
  font-family: var(--serif-en); font-size: clamp(2.2rem,4vw,3.4rem); color: var(--ink);
}
.stat-plus{ font-family: var(--serif-en); font-size: 1.6rem; color: var(--accent); }
.stat p{ margin-top:8px; font-size:.85rem; letter-spacing:.02em; }
@media (max-width: 720px){ .stats{ grid-template-columns: repeat(2,1fr); row-gap:40px; } }

/* ============ projects / carousel ============ */
.projects .section-head{ display:flex; align-items:flex-end; justify-content:space-between; margin-bottom: 50px; }

.carousel{ position:relative; }
.carousel-track{
  display:flex; gap: 26px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px var(--gutter) 30px;
  scrollbar-width:none;
  cursor: grab;
}
.carousel-track:active{ cursor:grabbing; }
.carousel-track::-webkit-scrollbar{ display:none; }

.slide{
  flex: 0 0 min(78vw, 420px);
  scroll-snap-align:start;
}
.slide-visual{
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  border-radius: 6px;
  overflow:hidden;
  color: var(--ink-soft);
  transition: color var(--dur-m) var(--ease), transform var(--dur-m) var(--ease);
}
.slide:hover .slide-visual{ color: var(--accent); transform: translateY(-6px); }
.room-svg{ width:100%; height:100%; }

.slide-info{ display:flex; align-items:baseline; gap:14px; margin-top: 20px; }
.slide-no{ font-family: var(--serif-en); color: var(--accent); font-size:.9rem; }
.slide-info h3{ font-size: 1.25rem; }
.slide-info p{ font-size:.82rem; margin-left:auto; letter-spacing:.03em; }

.carousel-controls{
  display:flex; align-items:center; gap: 20px;
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
}
.carousel-btn{
  width:44px; height:44px; border-radius:50%; border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  transition: background var(--dur-s), color var(--dur-s), border-color var(--dur-s);
}
.carousel-btn:hover{ background: var(--ink); color: var(--bg); border-color: var(--ink); }
.carousel-progress{ flex:1; height:1px; background: var(--line); position:relative; }
.carousel-progress span{
  position:absolute; left:0; top:0; height:100%; background: var(--accent);
  width: 20%; transition: width var(--dur-s) var(--ease), left var(--dur-s) var(--ease);
}

/* ============ services ============ */
.services{ background: var(--bg-alt); }
.services-list{ border-top: 1px solid var(--line); }
.service-row{
  display:grid; grid-template-columns: 60px 1fr 1.4fr; gap: 30px; align-items:baseline;
  padding: 34px 0; border-bottom: 1px solid var(--line);
  transition: padding var(--dur-s) var(--ease);
}
.service-row:hover{ padding-left: 12px; }
.service-num{ font-family: var(--serif-en); color: var(--accent); }
.service-row h3{ font-size: 1.4rem; }
.service-row p{ font-size:.95rem; }
@media (max-width: 760px){
  .service-row{ grid-template-columns: 1fr; gap:8px; }
}

/* ============ process ============ */
.process-list{ display:grid; grid-template-columns: repeat(4,1fr); gap: 40px; }
.process-step{ position:relative; padding-top: 26px; border-top: 1px solid var(--line); }
.process-no{ font-family: var(--serif-en); font-size: 2.4rem; color: var(--accent-soft); display:block; margin-bottom: 18px; }
.process-step h3{ font-size: 1.2rem; margin-bottom: 10px; }
.process-step p{ font-size:.9rem; }
@media (max-width: 900px){ .process-list{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .process-list{ grid-template-columns: 1fr; } }

/* ============ testimonials ============ */
.testimonials{ background: var(--dark); color: var(--dark-ink); text-align:center; }
.testimonials .section-index{ color: var(--accent-soft); }
.testi-carousel{ position:relative; min-height: 220px; max-width: 760px; margin: 0 auto; }
.testi-slide{
  position:absolute; inset:0;
  opacity:0; transform: translateY(14px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  pointer-events:none;
}
.testi-slide.is-active{ opacity:1; transform:translateY(0); pointer-events:auto; position:relative; }
.testi-quote{
  font-family: var(--serif-en); font-size: clamp(1.3rem, 2.6vw, 1.9rem); line-height:1.55;
  color: var(--dark-ink); margin-bottom: 26px;
}
html[data-lang="ja"] .testi-quote{ font-family: var(--serif-ja); }
.testi-name{ font-size:.82rem; letter-spacing:.05em; color: var(--accent-soft); }

.testi-dots{ display:flex; justify-content:center; gap:10px; margin-top: 46px; }
.testi-dots button{
  width:8px; height:8px; border-radius:50%; background: rgba(242,239,230,.28);
  transition: background var(--dur-s), transform var(--dur-s);
}
.testi-dots button.is-active{ background: var(--accent-soft); transform: scale(1.3); }

/* ============ contact ============ */
.contact-title{ font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 60px; }
.contact-grid{ display:grid; grid-template-columns: 1.3fr 1fr; gap: clamp(30px,6vw,90px); }
@media (max-width: 860px){ .contact-grid{ grid-template-columns:1fr; } }

.field{ margin-bottom: 26px; }
.field label{ display:block; font-size:.78rem; letter-spacing:.08em; text-transform:uppercase; margin-bottom:10px; color: var(--ink-soft); }
.field input, .field textarea{
  width:100%; border:none; border-bottom: 1px solid var(--line);
  background:transparent; padding: 10px 2px; font: inherit; color: var(--ink);
  transition: border-color var(--dur-s);
  resize: vertical;
}
.field input:focus, .field textarea:focus{ outline:none; border-color: var(--ink); }
.form-note{ margin-top:16px; font-size:.85rem; color: var(--accent); min-height: 1.2em; }

.contact-info{ display:flex; flex-direction:column; gap: 40px; }
.info-label{ font-size:.75rem; letter-spacing:.1em; text-transform:uppercase; color: var(--accent); margin-bottom:10px; }
.info-block p a{ border-bottom:1px solid transparent; transition: border-color var(--dur-s); }
.info-block p a:hover{ border-color: var(--ink); }

/* ============ footer ============ */
.site-footer{ border-top: 1px solid var(--line); padding: 40px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap: 20px; flex-wrap:wrap; }
.footer-copy{ font-size:.8rem; }
.back-top{
  width:40px; height:40px; border-radius:50%; border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  transition: background var(--dur-s), color var(--dur-s), border-color var(--dur-s);
}
.back-top:hover{ background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ============ magnetic buttons ============ */
.magnetic{ display:inline-flex; will-change: transform; }

/* ============ reduced motion ============ */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}