/* ============================
   Adsent Inc. - Shared Styles
   ============================ */

:root{
  --bg: #2a3038;
  --bg-2: #232930;
  --bg-3: #1c2128;
  --logo-bg: #404a53;
  --surface: #363d46;
  --surface-2: #404a53;
  --surface-3: #4a545d;
  --line: #3f4750;
  --line-2: #525c66;
  --ink: #f3efe6;
  --ink-2: #c9cdd2;
  --ink-3: #8d9399;
  --ink-4: #5e6770;
  --accent: oklch(0.82 0.15 75);
  --accent-2: oklch(0.72 0.16 55);
  --accent-deep: oklch(0.65 0.14 50);
  --accent-soft: oklch(0.82 0.15 75 / .18);
  --glow: oklch(0.82 0.15 75 / .35);
  --success: oklch(0.78 0.13 150);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans JP","Inter Tight",-apple-system,BlinkMacSystemFont,sans-serif;
  font-weight:400;
  line-height:1.7;
  font-feature-settings:"palt";
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
.eng{font-family:"Inter Tight","Noto Sans JP",sans-serif;font-feature-settings:"tnum","ss01";}
.mono{font-family:"JetBrains Mono",monospace;letter-spacing:-0.02em;}
img{max-width:100%;display:block;}
a{color:inherit;}

.wrap{max-width:1340px;margin:0 auto;padding:0 56px;position:relative;}
.wrap-sm{max-width:920px;margin:0 auto;padding:0 56px;position:relative;}
@media(max-width:880px){.wrap,.wrap-sm{padding:0 28px}}
@media(max-width:480px){.wrap,.wrap-sm{padding:0 20px}}

/* ===== Background decoration ===== */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right, color-mix(in oklch, var(--line) 80%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklch, var(--line) 80%, transparent) 1px, transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 100%);
  opacity:.45;
}
.glow{
  position:fixed;top:-200px;left:50%;transform:translateX(-50%);
  width:1100px;height:600px;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse 50% 50% at 50% 50%, var(--glow), transparent 70%);
  filter:blur(40px);
}
main{position:relative;z-index:2;}

/* ============== NAV ============== */
.nav{
  position:sticky;top:18px;z-index:50;margin:0 auto;
  backdrop-filter:saturate(140%) blur(20px);
  background:color-mix(in oklch, var(--bg) 75%, transparent);
  border:1px solid var(--line);
  border-radius:999px;
  max-width:1240px;
  width:calc(100% - 48px);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 8px 0 16px;gap:24px;}
.logo{display:flex;align-items:center;gap:14px;font-family:"Inter Tight";font-weight:600;font-size:17px;letter-spacing:-0.01em;color:var(--ink);text-decoration:none;white-space:nowrap;}
.logo-img{
  width:38px;height:38px;border-radius:10px;
  background-image:url(adsent-mark.png);
  background-size:cover;background-position:center;
  box-shadow:inset 0 0 0 1px color-mix(in oklch, white 8%, transparent);
  flex-shrink:0;
}
.nav ul{display:flex;gap:30px;list-style:none;}
.nav ul a{color:var(--ink-2);text-decoration:none;font-size:13.5px;font-weight:500;transition:color .2s;}
.nav ul a:hover, .nav ul a.active{color:var(--ink);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#1d1610;
  padding:11px 20px;border-radius:999px;font-size:13.5px;font-weight:700;text-decoration:none;
  transition:transform .2s, filter .2s;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-1px);filter:brightness(1.08);}
.nav-cta::after{content:"→";font-family:"Inter Tight";font-weight:600;}

/* Hamburger toggle (mobile only) */
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:50%;
  background:transparent;border:1px solid var(--line);
  cursor:pointer;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
  padding:0;
  font-family:inherit;
  transition:border-color .2s;
}
.nav-toggle:hover{border-color:var(--line-2);}
.nav-toggle span{
  display:block;width:18px;height:1.5px;background:var(--ink);
  transition:transform .25s ease, opacity .15s ease;
  border-radius:1px;
}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav.open .nav-toggle span:nth-child(2){opacity:0;}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

@media(max-width:980px){
  .nav-toggle{display:flex;}
  .nav-cta{padding:10px 16px;font-size:13px;}
  .nav-cta::after{display:none;}
  .nav ul{
    display:flex;
    flex-direction:column;
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:22px;
    padding:14px 8px;
    gap:0;
    box-shadow:0 30px 60px -20px rgba(0,0,0,.5);
    opacity:0;
    transform:translateY(-8px);
    pointer-events:none;
    transition:opacity .25s, transform .25s;
  }
  .nav.open ul{
    opacity:1;
    transform:none;
    pointer-events:auto;
  }
  .nav ul li{display:block;}
  .nav ul a{
    display:block;padding:16px 18px;
    font-size:15px;color:var(--ink);
    border-radius:12px;
  }
  .nav ul a:hover{background:var(--surface);}
}

@media(max-width:480px){
  .nav-inner{padding:0 6px 0 12px;height:58px;}
  .logo{font-size:16px;gap:10px;}
  .logo-img{width:34px;height:34px;}
  .nav-cta{padding:9px 14px;font-size:12.5px;}
}

/* ============== Buttons ============== */
.btn-primary{
  display:inline-flex;align-items:center;gap:12px;
  background:var(--accent);
  color:#1d1610;
  padding:18px 30px;border-radius:999px;text-decoration:none;font-weight:700;font-size:15.5px;
  transition:transform .2s, box-shadow .2s, filter .2s;
  box-shadow:0 20px 50px -20px var(--glow);
  letter-spacing:.01em;
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 30px 60px -15px var(--glow);}
.btn-primary::after{content:"→";font-family:"Inter Tight";font-weight:700;}

.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;
  padding:18px 28px;border-radius:999px;font-weight:500;font-size:15px;
  border:1px solid var(--line-2);background:color-mix(in oklch, var(--surface) 70%, transparent);
  backdrop-filter:blur(10px);transition:background .2s, border-color .2s;
}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--ink-4);}

/* ============== Common Section ============== */
section{padding:140px 0;position:relative;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:50px;margin-bottom:80px;flex-wrap:wrap;}
.kicker{display:inline-flex;align-items:center;gap:12px;font-family:"JetBrains Mono";font-size:12px;letter-spacing:.08em;color:var(--ink-3);font-weight:500;text-transform:uppercase;}
.kicker::before{content:"";width:24px;height:1px;background:var(--accent);box-shadow:0 0 8px var(--glow);}
.sec-title{font-size:clamp(32px,4.6vw,64px);letter-spacing:-0.025em;line-height:1.2;font-weight:700;margin-top:22px;max-width:900px;color:var(--ink);}
.sec-title em{font-style:normal;color:var(--accent);font-weight:700;}
.sec-lead{max-width:480px;font-size:16px;line-height:1.85;color:var(--ink-2);}
@media(max-width:880px){
  section{padding:80px 0;}
  .sec-head{margin-bottom:48px;gap:24px;}
  .sec-lead{font-size:15px;}
}

/* ============== FOOTER ============== */
footer{
  position:relative;z-index:2;
  background:var(--bg-3);
  border-top:1px solid var(--line);
  padding:88px 0 40px;color:var(--ink-3);font-size:14px;
}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:64px;border-bottom:1px solid var(--line);}
.foot-brand{display:flex;flex-direction:column;gap:18px;}
.foot-brand .logo{color:var(--ink);}
.foot-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.85;max-width:320px;}
.foot-col h5{font-size:11px;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase;font-family:"JetBrains Mono";font-weight:600;margin-bottom:20px;}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:12px;}
.foot-col a{color:var(--ink);text-decoration:none;font-size:14px;transition:color .2s;}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{padding-top:32px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.foot-bottom .mono{font-size:11px;letter-spacing:.06em;color:var(--ink-4);}
.foot-bottom ul{list-style:none;display:flex;gap:24px;}
.foot-bottom a{color:var(--ink-3);text-decoration:none;font-size:12px;}
.foot-bottom a:hover{color:var(--ink);}
@media(max-width:880px){
  .foot-top{grid-template-columns:1fr 1fr;}
  .foot-brand{grid-column:span 2;}
}

/* ============== Scroll reveal ============== */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s ease, transform .8s ease;}
.reveal.in{opacity:1;transform:none;}

/* ============== Subpage Hero (Company, Privacy, Terms) ============== */
.sub-hero{padding:120px 0 100px;border-bottom:1px solid var(--line);}
.sub-hero .breadcrumb{display:flex;gap:10px;align-items:center;font-family:"JetBrains Mono";font-size:11px;color:var(--ink-3);letter-spacing:.08em;text-transform:uppercase;flex-wrap:wrap;}
.sub-hero .breadcrumb a{color:var(--ink-3);text-decoration:none;transition:color .2s;}
.sub-hero .breadcrumb a:hover{color:var(--ink);}
.sub-hero .breadcrumb .sep{opacity:.5;}
.sub-hero h1{margin-top:24px;font-size:clamp(36px, 6vw, 92px);font-weight:700;letter-spacing:-0.03em;line-height:1.15;}
.sub-hero h1 em{font-style:normal;color:var(--accent);}
.sub-hero .lead{margin-top:28px;font-size:18px;color:var(--ink-2);max-width:680px;line-height:1.85;}
@media(max-width:880px){
  .sub-hero{padding:60px 0 50px;}
  .sub-hero .lead{font-size:15.5px;margin-top:20px;}
}

/* ============== Doc / Legal Pages ============== */
.doc{padding:100px 0 140px;}
.doc h2{font-size:24px;font-weight:700;letter-spacing:-0.015em;margin:64px 0 24px;padding-bottom:18px;border-bottom:1px solid var(--line);line-height:1.4;}
.doc h2:first-child{margin-top:0;}
.doc h3{font-size:17px;font-weight:600;margin:36px 0 14px;color:var(--ink);}
.doc p{font-size:15px;line-height:1.95;color:var(--ink-2);margin-bottom:18px;}
.doc ul, .doc ol{padding-left:22px;margin-bottom:18px;color:var(--ink-2);font-size:15px;line-height:1.95;}
.doc li{margin-bottom:6px;}
.doc .updated{font-family:"JetBrains Mono";font-size:12px;color:var(--ink-3);margin-bottom:48px;padding:14px 18px;border:1px solid var(--line);border-radius:8px;background:var(--surface);display:inline-block;}
@media(max-width:760px){
  .doc{padding:60px 0 80px;}
  .doc h2{font-size:21px;margin:48px 0 20px;}
  .doc p, .doc ul, .doc ol{font-size:14.5px;}
}

/* ============== Company Table ============== */
.company-table{width:100%;border-collapse:collapse;margin-top:24px;}
.company-table tr{border-bottom:1px solid var(--line);}
.company-table tr:first-child{border-top:1px solid var(--line);}
.company-table th{
  text-align:left;font-weight:600;font-size:13px;color:var(--ink-3);
  padding:24px 24px 24px 0;vertical-align:top;width:200px;
  font-family:"JetBrains Mono";letter-spacing:.04em;text-transform:uppercase;
}
.company-table td{
  padding:24px 0;font-size:15px;color:var(--ink);line-height:1.85;
}
.company-table td .ja{font-size:13px;color:var(--ink-3);margin-top:4px;display:block;line-height:1.7;}
@media(max-width:760px){
  .company-table tr{display:block;padding:18px 0;}
  .company-table th, .company-table td{display:block;padding:0;width:auto;}
  .company-table th{margin-bottom:8px;font-size:11px;}
  .company-table td{font-size:14.5px;}
}

/* ============== Small CTA banner for subpages ============== */
.cta-banner{
  margin-top:80px;padding:64px 56px;border-radius:24px;
  background:linear-gradient(135deg, var(--surface-2), var(--surface));
  border:1px solid var(--line-2);
  display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-banner h3{font-size:26px;font-weight:700;letter-spacing:-0.015em;line-height:1.45;}
.cta-banner p{margin-top:10px;font-size:14.5px;color:var(--ink-2);max-width:520px;line-height:1.8;}
.cta-banner .actions{display:flex;gap:12px;flex-wrap:wrap;}
@media(max-width:880px){
  .cta-banner{padding:36px 28px;margin-top:60px;}
  .cta-banner h3{font-size:22px;}
  .cta-banner p{font-size:14px;}
  .cta-banner .actions{width:100%;}
  .cta-banner .actions a{flex:1;justify-content:center;padding:16px 20px;font-size:14px;}
}