/* =========================================================
   LIXSADY — design tokens
   bg near-black charcoal · alpine-red mark · signal-teal data accent
   display: Space Grotesk · body: Inter · mono: JetBrains Mono
   ========================================================= */
:root{
  --bg:        #0A0D10;
  --surface:   #12161B;
  --surface-2: #171D24;
  --line:      rgba(232,234,237,0.09);
  --line-2:    rgba(232,234,237,0.16);
  --text:      #E8EAED;
  --text-dim:  #A5ABB4;
  --text-mute: #6B7280;
  --red:       #C8352B;
  --red-dim:   #8C2620;
  --teal:      #2DD4BF;
  --teal-dim:  #1B8477;

  --font-display: 'Space Grotesk', 'Noto Sans JP', sans-serif;
  --font-body: 'Inter', 'Noto Sans JP', sans-serif;
  --font-mono: 'JetBrains Mono', 'Noto Sans JP', monospace;

  --maxw: 1180px;
}

*{ box-sizing: border-box; }
html{
  scroll-behavior: smooth;
  font-size: 100%; /* scaled by .text-scale-* classes for the text-size control */
}
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* ---------- accessibility: text size steps ---------- */
html.text-scale-sm{ font-size: 87.5%; }
html.text-scale-md{ font-size: 100%; }
html.text-scale-lg{ font-size: 112.5%; }
html.text-scale-xl{ font-size: 125%; }

/* ---------- accessibility: manual reduced-motion toggle ---------- */
body.a11y-motion-off *,
body.a11y-motion-off *::before,
body.a11y-motion-off *::after{
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* ---------- accessibility: high-contrast theme ---------- */
body.a11y-contrast{
  --line: rgba(232,234,237,0.32);
  --line-2: rgba(232,234,237,0.5);
  --text-dim: #F0F2F4;
  --text-mute: #D5D8DC;
}
body.a11y-contrast .grain{ display:none; }
body.a11y-contrast .site-header.scrolled{ background: #05070A; }
body.a11y-contrast .hero-scrim{
  background: radial-gradient(ellipse at 32% 40%, rgba(5,7,10,0.35) 0%, rgba(5,7,10,0.88) 55%, rgba(5,7,10,0.98) 100%);
}
body.a11y-contrast a:hover{ text-decoration: underline; }
body.a11y-contrast .btn-ghost{ border-color: var(--text); }
body.a11y-contrast .service-card,
body.a11y-contrast .stack-category,
body.a11y-contrast .lixvera-mark,
body.a11y-contrast .email-template-box{ border-color: var(--line-2); }

/* ---------- skip link + visually-hidden utility ---------- */
.visually-hidden{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
.skip-link{
  position:absolute; top:-100%; left:16px; z-index: 1000;
  background: var(--teal); color:#04211d; padding:10px 18px;
  border-radius: 3px; font-size: 0.875rem; font-weight:600;
  transition: top .2s ease;
}
.skip-link:focus{ top: 12px; }

a{ color: inherit; text-decoration: none; }
h1,h2,h3{ font-family: var(--font-display); font-weight: 600; margin: 0; letter-spacing: -0.01em; }
p{ margin: 0; }
ul{ list-style:none; margin:0; padding:0; }

:focus-visible{
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.section-inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
}

/* faint grain overlay for texture */
.grain{
  position: fixed; inset:0; pointer-events:none; z-index: 500;
  opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- header ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
}
.site-header.scrolled{
  background: rgba(10,13,16,0.82);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
}
.header-inner{
  max-width: var(--maxw); margin:0 auto; padding: 20px 32px;
  display:flex; align-items:center; justify-content:space-between;
}
.mark{ display:flex; align-items:center; }
.logo-mark{
  height: 34px; width: auto; display:block;
  border-radius: 3px;
}
.logo-mark-footer{ height: 24px; }
.main-nav{ display:flex; gap: 34px; }
.main-nav a{
  font-size: 0.875rem; color: var(--text-dim); position: relative;
  transition: color .2s ease;
}
.main-nav a:hover{ color: var(--text); }
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:-6px; width:0; height:1px; background: var(--teal);
  transition: width .25s ease;
}
.main-nav a:hover::after{ width:100%; }

.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;
}
.nav-toggle span{ width:22px; height:2px; background: var(--text); }

/* ---------- header controls: language + accessibility ---------- */
.header-controls{ display:flex; align-items:center; gap: 14px; margin-left: 28px; }

.lang-switch select{
  background: var(--surface-2); color: var(--text); border: 1px solid var(--line-2);
  border-radius: 3px; padding: 6px 10px; font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 0.05em; cursor:pointer;
}
.lang-switch select:focus{ outline: 2px solid var(--teal); outline-offset: 2px; }

.a11y-switch{ position: relative; }
.a11y-toggle-btn{
  background: var(--surface-2); color: var(--text); border: 1px solid var(--line-2);
  border-radius: 3px; padding: 6px 11px; font-family: var(--font-display); font-size: 0.8125rem;
  font-weight: 600; cursor:pointer; line-height:1;
}
.a11y-toggle-btn:hover{ border-color: var(--teal); color: var(--teal); }

.a11y-panel{
  position:absolute; top: calc(100% + 10px); right:0;
  width: max-content; min-width: 240px; max-width: min(300px, 88vw);
  background: var(--surface-2); border: 1px solid var(--line-2); border-radius: 6px;
  padding: 16px; box-shadow: 0 12px 32px rgba(0,0,0,0.45);
  display:flex; flex-direction:column; gap: 14px;
}
.a11y-panel[hidden]{ display:none; }
.a11y-panel-title{
  font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing:.1em; text-transform:uppercase;
  color: var(--text-mute); margin:0;
}
.a11y-row{
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap: wrap; gap: 10px; row-gap: 8px; font-size: 0.8125rem;
}
.a11y-toggle-row{ cursor:pointer; }
.a11y-toggle-row input[type="checkbox"]{
  width: 36px; height: 20px; appearance:none; background: var(--line-2); border-radius: 10px;
  position:relative; cursor:pointer; transition: background .2s ease; flex-shrink:0;
}
.a11y-toggle-row input[type="checkbox"]::before{
  content:''; position:absolute; top:2px; left:2px; width:16px; height:16px; border-radius:50%;
  background: var(--text); transition: transform .2s ease;
}
.a11y-toggle-row input[type="checkbox"]:checked{ background: var(--teal-dim); }
.a11y-toggle-row input[type="checkbox"]:checked::before{ transform: translateX(16px); background: var(--teal); }

.a11y-textsize-controls{ display:flex; align-items:center; flex-wrap: wrap; gap: 6px; }
.a11y-textsize-controls button{
  background: transparent; color: var(--text); border: 1px solid var(--line-2); border-radius: 3px;
  font-family: var(--font-mono); font-size: 0.75rem; padding: 5px 8px; cursor:pointer;
  white-space: nowrap;
}
.a11y-textsize-controls button:hover{ border-color: var(--teal); color: var(--teal); }

/* ---------- hero ---------- */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex; flex-direction:column; justify-content:center;
  overflow:hidden;
  padding-top: 90px;
}
.globe-stage{
  position:absolute; inset:0; z-index:0;
}
.globe-stage canvas{ display:block; }
.hero-scrim{
  position:absolute; inset:0; z-index:1;
  background:
    radial-gradient(ellipse at 32% 40%, rgba(10,13,16,0.15) 0%, rgba(10,13,16,0.72) 55%, rgba(10,13,16,0.96) 100%);
}
.hero-content{
  position: relative; z-index: 2;
  max-width: var(--maxw); width:100%; margin: 0 auto; padding: 0 32px;
}
.hero-title{
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.98;
  color: var(--text);
}
.hero-title .dot{ color: var(--red); }
.hero-lede{
  max-width: 520px; margin-top: 26px;
  color: var(--text-dim); font-size: 1.0625rem;
}
.hero-actions{ display:flex; gap:16px; margin-top: 40px; }

.hero-coords{
  position: relative; z-index: 2;
  max-width: var(--maxw); margin: 0 auto; width:100%; padding: 0 32px 36px;
  display:flex; gap: 28px; align-items:center;
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-mute);
  letter-spacing: 0.06em;
}
.coords-status{ display:flex; align-items:center; gap:8px; color: var(--teal); margin-left:auto; }
.coords-status i{
  width:6px; height:6px; border-radius:50%; background: var(--teal);
  box-shadow: 0 0 0 0 rgba(45,212,191,0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse{
  0%{ box-shadow: 0 0 0 0 rgba(45,212,191,0.55); }
  70%{ box-shadow: 0 0 0 8px rgba(45,212,191,0); }
  100%{ box-shadow: 0 0 0 0 rgba(45,212,191,0); }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 13px 26px; font-size: 0.875rem; font-weight: 500; border-radius: 3px;
  border: 1px solid transparent; cursor: pointer; transition: all .2s ease;
  font-family: var(--font-body);
}
.btn-primary{ background: var(--red); color:#fff; }
.btn-primary:hover{ background: #DE4030; transform: translateY(-1px); }
.btn-ghost{ border-color: var(--line-2); color: var(--text); }
.btn-ghost:hover{ border-color: var(--teal); color: var(--teal); }
.btn-full{ width:100%; }

/* ---------- about ---------- */
.about{ padding: 130px 0 100px; border-top: 1px solid var(--line); }
.about-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; }
.about-lead h2{ font-size: 1.875rem; line-height:1.25; max-width: 340px; }
.about-body p{ color: var(--text-dim); margin-bottom: 18px; font-size: 0.96875rem; }
.about-body strong{ color: var(--text); font-weight: 600; }

/* ---------- services ---------- */
.services{ padding: 40px 0 110px; }
.section-title{ font-size: 2.125rem; margin-bottom: 46px; max-width: 480px; }
.service-list{
  display:grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
}
.service-card{
  background: var(--surface); padding: 40px 36px; position:relative;
}
.service-index{
  font-family: var(--font-mono); color: var(--red); font-size: 0.8125rem; letter-spacing:.1em;
}
.service-card h3{ font-size: 1.25rem; margin: 16px 0 12px; }
.service-card p{ color: var(--text-dim); font-size: 0.90625rem; }

/* ---------- stack ---------- */
.stack{ padding: 40px 0 120px; border-top: 1px solid var(--line); }
.stack-intro{ color: var(--text-dim); max-width: 560px; margin-bottom: 46px; font-size: 0.96875rem; }
.stack-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}
.stack-category{
  border: 1px solid var(--line); border-radius: 6px; padding: 22px 20px; background: var(--surface);
}
.stack-category h4{
  font-family: var(--font-mono); font-size: 0.71875rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-mute); margin: 0 0 16px;
}
.stack-chips{ display:flex; flex-wrap: wrap; gap: 8px; }
.chip{
  font-family: var(--font-mono); font-size: 0.78125rem; color: var(--text);
  border: 1px solid var(--line-2); border-radius: 3px; padding: 5px 10px;
  transition: border-color .2s ease, color .2s ease;
}
.chip:hover{ border-color: var(--teal); color: var(--teal); }

/* ---------- lixvera ---------- */
.lixvera{ padding: 100px 0; background: var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.lixvera-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items:center; }
.lixvera h2{ font-size: 2.125rem; margin-bottom: 18px; }
.lixvera p{ color: var(--text-dim); font-size: 0.96875rem; max-width: 460px; }
.lixvera-mark{
  display:flex; align-items:center; justify-content:center;
  border: 1px solid var(--line-2); border-radius: 6px;
  overflow: hidden;
  background: var(--surface-2);
  padding: 18px;
}
.lixvera-badge-img{
  width: 100%; max-width: 380px; height: auto; display:block; border-radius: 4px;
}

/* ---------- contact ---------- */
.contact{ padding: 120px 0; }
.contact-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 70px; }
.contact-lead h2{ font-size: 2.125rem; margin-bottom: 18px; }
.contact-lead p{ color: var(--text-dim); font-size: 0.96875rem; max-width: 440px; }
.contact-details{ margin-top: 34px; }
.contact-details li{
  display:flex; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line);
  font-size: 0.90625rem;
}
.contact-details li span:first-child{
  font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing:.08em; text-transform:uppercase;
  color: var(--text-mute); width: 90px; flex-shrink:0; padding-top:2px;
}
.contact-details a:hover{ color: var(--teal); }
.contact-other-sites{ display:flex; gap: 14px; flex-wrap: wrap; }

.email-template{ display:flex; flex-direction:column; gap: 14px; }
.email-template-title{
  font-size: 0.90625rem; color: var(--text-dim); margin: 0;
}
.email-template-box{
  background: var(--surface); border: 1px solid var(--line-2); border-radius: 4px;
  padding: 18px 20px; overflow-x: auto;
}
.email-template-box pre{
  margin:0; font-family: var(--font-mono); font-size: 0.8125rem; line-height: 1.7;
  color: var(--text-dim); white-space: pre-wrap; word-break: break-word;
}

/* ---------- footer ---------- */
.site-footer{ border-top: 1px solid var(--line); padding: 46px 0; }
.footer-inner{ display:flex; align-items:center; gap: 20px; flex-wrap: wrap; }
.footer-mark{ display:flex; align-items:center; }
.footer-meta, .footer-copy{ font-size: 0.78125rem; color: var(--text-mute); }
.footer-fineprint{ margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.footer-translation-note{ font-size: 0.6875rem; color: var(--text-mute); opacity: 0.8; }
.footer-copy{ margin-left: auto; }

/* ---------- responsive ---------- */
@media (max-width: 900px){
  .main-nav{ display:none; }
  .nav-toggle{ display:flex; }
  .header-controls{ margin-left: auto; margin-right: 8px; }
  .about-grid, .lixvera-grid, .contact-grid{ grid-template-columns: 1fr; }
  .service-list{ grid-template-columns: 1fr; }
  .stack-grid{ grid-template-columns: repeat(2, 1fr); }
  .footer-copy{ margin-left:0; width:100%; }
}
@media (max-width: 560px){
  .stack-grid{ grid-template-columns: 1fr; }
  .hero-coords{ flex-wrap:wrap; }
  .header-inner, .section-inner{ padding-left:20px; padding-right:20px; }
  .header-controls{ gap: 8px; }
  .a11y-panel{ max-width: min(260px, 82vw); }
}