:root{
  --bg:#faf8f3;
  --bg-soft:#f1ecdf;
  --ink:#1f2a24;
  --ink-soft:#4d5a52;
  --green: #14b476;
  --green-deep: #2e6249;
  --gold: #e46d0a;
  --gold-soft:#f2b934;
  --card:#ffffff;
  --border:#e4ddc9;
  --text:#1a1f17;
  color-scheme: light;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
:root[data-theme="dark"]{
  --bg:#12160f;
  --bg-soft:#1a1f17;
  --ink:#ecebe4;
  --ink-soft:#b9c0b6;
  --green: #17d68c;
  --green-deep: #20975e;
  --gold:#e4c98a;
  --gold-soft:#e46d0a;
  --card:#191f18;
  --border:#2a3226;
  --text:#f1ecdf;
}

*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height:1.55;
}
img{max-width:100%;}
[hidden]{display:none!important;}

.pattern{
  background-image:
    radial-gradient(circle at 1px 1px, var(--gold-soft) 1px, transparent 1.5px);
  background-size: 26px 26px;
  opacity:.35;
  position:absolute;
  inset:0;
  pointer-events:none;
}

header{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(rgba(0,0,0,.28), rgba(0,0,0,.28)),
    linear-gradient(160deg, var(--green-deep), var(--green) 70%);
  color:#fbf9f2;
  padding: 4.5rem 1.25rem 5.5rem;
  text-align:center;
}
header .inner{position:relative; max-width:760px; margin:0 auto;}
header::before{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:min(80vw, 560px);
  aspect-ratio:1;
  background:url("logo_yawasla.webp") center/contain no-repeat;
  filter:brightness(0) invert(1);
  opacity:.12;
  transform:translate(-50%,-50%);
  pointer-events:none;
}
.github-link{
  position:absolute;
  top:1.25rem;
  right:1.25rem;
  z-index:3;
  width:2.5rem;
  height:2.5rem;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fbf9f2;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.35);
  font-size:1.2rem;
  text-decoration:none;
  transition:transform .15s ease, background .15s ease;
}
.github-link:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,.2);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.35);
  color:#fbf9f2;
  padding:.35rem .9rem;
  border-radius:999px;
  font-size:.8rem;
  letter-spacing:.02em;
  margin-bottom:1.5rem;
}
.badge .dot{
  width:.5rem; height:.5rem; border-radius:50%;
  background:var(--gold-soft);
  box-shadow:0 0 0 3px rgba(228,201,138,.25);
}
h1{
  font-size:clamp(2rem, 5vw, 3rem);
  margin:0 0 .75rem;
  letter-spacing:-.01em;
}
header p.lead{
  font-size:clamp(1rem, 2.4vw, 1.2rem);
  color:#e7efe9;
  max-width:600px;
  margin:0 auto 2rem;
}
.cta-row{
  display:flex;
  gap:.75rem;
  justify-content:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-block;
  padding:.75rem 1.5rem;
  border-radius:.6rem;
  font-weight:600;
  text-decoration:none;
  font-size:.95rem;
  transition:transform .15s ease, box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{
  background:var(--gold-soft);
  color:var(--text);
  box-shadow:0 6px 18px rgba(0,0,0,.18);
}
.btn-ghost{
  background:transparent;
  color:#fbf9f2;
  border:1px solid rgba(255,255,255,.5);
}

main{
  max-width:960px;
  margin:0 auto;
  padding:0 1.25rem;
}

.section{
  margin-top:-2.75rem;
  position:relative;
  z-index:2;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:1rem;
  padding:2rem;
  box-shadow:0 10px 30px rgba(15,30,20,.08);
}

.features{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:1.25rem;
}
@media (max-width: 600px){
  .features{grid-template-columns:1fr;}
}
.feature{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:.85rem;
  padding:1.4rem;
}
.feature .icon{
  width:2.5rem; height:2.5rem;
  border-radius:.6rem;
  background:var(--green-deep);
  color:#fbf9f2;
  display:flex; align-items:center; justify-content:center;
  font-size:1.2rem;
  margin-bottom:.9rem;
}
.feature h3{
  margin:0 0 .4rem;
  font-size:1.02rem;
  color:var(--ink);
}
.feature p{
  margin:0;
  color:var(--ink-soft);
  font-size:.92rem;
}

.about{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:2.5rem;
  align-items:center;
  margin-top:4.5rem;
}
@media (max-width: 720px){
  .about{grid-template-columns:1fr;}
}
.about h2{
  font-size:1.6rem;
  margin:0 0 .9rem;
}
.about p{
  color:var(--ink-soft);
  margin:0 0 1rem;
}
.stat-card{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:1rem;
  padding:1.75rem;
}
.stat-card ul{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction:column;
  gap:.9rem;
}
.stat-card li{
  display:flex;
  justify-content:space-between;
  gap:1rem;
  font-size:.92rem;
  padding-bottom:.9rem;
  border-bottom:1px solid var(--border);
}
.stat-card li:last-child{border-bottom:none; padding-bottom:0;}
.stat-card .label{color:var(--ink-soft);}
.stat-card .value{font-weight:600; text-align:right;}

.roadmap{
  margin-top:4.5rem;
}
.roadmap h2{
  font-size:1.6rem;
  margin:0 0 .4rem;
}
.roadmap p.sub{
  color:var(--ink-soft);
  margin:0 0 1.75rem;
}
.timeline{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));
  gap:1rem;
}
.step{
  border-left:3px solid var(--border);
  padding-left:1rem;
}
.step.active{border-left-color:var(--gold);}
.step .when{
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:var(--gold);
  font-weight:700;
}
.step p{
  margin:.35rem 0 0;
  color:var(--ink-soft);
  font-size:.9rem;
}

.notify{
  margin:4.5rem 0 3.5rem;
  text-align:center;
  background:linear-gradient(160deg, var(--green-deep), var(--green));
  color:#fbf9f2;
  border-radius:1.25rem;
  padding:3rem 1.5rem;
}
.notify h2{margin:0 0 .6rem; font-size:1.5rem;}
.notify p{margin:0 0 1.5rem; color:#e7efe9;}

footer{
  text-align:center;
  padding:2.5rem 1.25rem 3rem;
  color:var(--ink-soft);
  font-size:.85rem;
}
footer a{color:var(--green); text-decoration:none;}
footer a:hover{text-decoration:underline;}

.theme-toggle{
  position:fixed;
  right:1.25rem;
  bottom:calc(1.25rem + env(safe-area-inset-bottom, 0px));
  width:3rem;
  height:3rem;
  border-radius:50%;
  border:1px solid var(--border);
  background:var(--card);
  color:var(--ink);
  font-size:1.1rem;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 20px rgba(15,30,20,.18);
  cursor:pointer;
  z-index:10;
  transition:transform .15s ease, background .15s ease;
}
.theme-toggle:hover{transform:translateY(-2px);}
.theme-toggle:active{transform:translateY(0);}