/* Plant Blog Starter — Bright Refresh (2025-09) */
:root{
  /* Light-first, cheerful palette */
  --bg: #f7fbf8;
  --panel: #ffffffcc;
  --ink: #0b1c14;
  --muted: #517764;
  --accent: #22b573;
  --accent-2: #34caa5;
  --accent-3: #6be38f;
  --ring: rgba(34,181,115,.35);
  --card: #ffffffee;
  --shadow: 0 10px 30px rgba(22, 55, 39, 0.10);
  --radius: 18px;
  --link: #11895a;
  --link-visited: #0f7a52;
  --code: #f2f8f5;
  --code-ink: #063b27;
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  color:var(--ink);
  background:
    radial-gradient(1200px 800px at 0% -10%, rgba(65, 205, 148,.25) 0%, transparent 60%),
    radial-gradient(1000px 700px at 100% 10%, rgba(133, 209, 160,.25) 0%, transparent 55%),
    var(--bg);
  background-attachment: fixed;
}

.container{max-width:1080px;margin:0 auto;padding:24px}
.header{display:flex;align-items:center;gap:16px;padding:18px 0 10px}
.logo{width:44px;height:44px;display:inline-grid;place-items:center;border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);background:linear-gradient(145deg,#0dbd6f,#9ff7c2)}
.logo img{display:block;width:26px;height:26px;filter:drop-shadow(0 2px 2px rgba(0,0,0,.15))}
.brand{display:flex;flex-direction:column}
.brand h1{font-size:24px;letter-spacing:0.2px;margin:0 0 4px}
.brand .sub{font-size:13px;color:var(--muted)}

.nav{margin-left:auto;display:flex;gap:10px}
.btn{
  appearance:none;border:1px solid rgba(0,0,0,.06);background:var(--card);color:var(--ink);
  padding:10px 14px;border-radius:999px;cursor:pointer;box-shadow:var(--shadow);
  transition: transform .12s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
  backdrop-filter: blur(6px);
}
.btn:hover{transform:translateY(-1px);border-color:var(--ring);box-shadow:0 12px 24px rgba(22,55,39,.14)}
.btn:active{transform:translateY(0)}
.btn:focus{outline:3px solid var(--ring);outline-offset:2px}
.btn-ghost{background:transparent;border-color:var(--ring)}

#search{min-width:220px}

.hero{
  background:linear-gradient(135deg, rgba(109,239,171,.40), rgba(255,255,255,.55));
  border:1px solid rgba(0,0,0,.06);
  border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
  backdrop-filter: blur(6px);
  position:relative; overflow:hidden;
}
.hero::after{
  content:""; position:absolute; inset:auto -40% -60% -40%; height:160px;
  background: radial-gradient(closest-side, rgba(52,202,165,.35), transparent 70%);
  filter: blur(30px);
}
.hero h2{margin:0 0 8px;font-size:30px}
.hero p{margin:0;color:var(--muted)}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
@media (max-width: 980px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 660px){.grid{grid-template-columns:1fr}}

.card{
  background:var(--card);border-radius:22px;
  border:1px solid rgba(0,0,0,.06);overflow:hidden;display:flex;flex-direction:column;
  min-height:200px;box-shadow:var(--shadow); position:relative; transform-style:preserve-3d;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{ box-shadow:0 18px 36px rgba(22,55,39,.18); border-color:var(--ring) }
.card .thumb{aspect-ratio:16/9;background:linear-gradient(180deg,#08351f,#0c4b30);display:block;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.02);transition:transform .35s ease}
.card:hover .thumb img{ transform:scale(1.06) }
.card .body{padding:16px 18px 18px}
.card .title{font-size:19px;margin:0 0 6px; line-height:1.35}
.card .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.card .excerpt{font-size:14px;opacity:.95}

a{color:var(--link);text-decoration:none; position:relative}
a::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: linear-gradient(90deg,var(--accent), var(--accent-2), var(--accent-3));
  transform:scaleX(0); transform-origin:left; transition:transform .25s ease;
}
a:hover::after{ transform:scaleX(1) }

.footer{margin:32px 0 18px;color:var(--muted);font-size:12px;text-align:center}

.post{
  background:var(--card);border-radius:22px;border:1px solid rgba(0,0,0,.06);
  padding:26px;box-shadow:var(--shadow);margin-top:14px; backdrop-filter: blur(6px);
}
.post h1{margin-top:0;font-size:34px}
.post h2{margin-top:28px}
.post time{color:var(--muted);font-size:14px}
.post .tags{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0}
.tag{font-size:12px;border:1px solid var(--ring);padding:4px 10px;border-radius:999px;color:var(--ink);
  background:linear-gradient(180deg,rgba(52,202,165,.18), rgba(255,255,255,.65))}

hr{border:0;height:1px;background:linear-gradient(90deg, transparent, rgba(0,0,0,.18), transparent);margin:24px 0}
figure{margin:18px 0;padding:0}
figure img{max-width:100%;border-radius:16px;border:1px solid rgba(0,0,0,.06);box-shadow:var(--shadow)}
figcaption{color:var(--muted);font-size:12px;margin-top:6px}

pre{background:var(--code);color:var(--code-ink);padding:14px;border-radius:12px;overflow:auto;border:1px solid rgba(0,0,0,.06)}
code{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}

.toc{background:transparent;border-left:3px solid var(--accent);padding-left:12px;margin:12px 0}
.toc a{display:block;margin:6px 0}

kbd{border:1px solid rgba(0,0,0,.18);border-bottom-width:3px;padding:2px 6px;border-radius:6px;background:#f1faf6}

.visually-hidden{position:absolute !important; height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* Motion primitives */
@keyframes fadeUp {
  from { opacity:0; transform: translateY(12px); }
  to   { opacity:1; transform: translateY(0); }
}
.reveal{opacity:0; transform:translateY(12px)}
.reveal.in{opacity:1; transform:translateY(0); animation: fadeUp .5s ease both}

/* Reading progress bar */
.progress{
  position:fixed; top:0; left:0; right:0; height:3px; background:transparent; z-index:9999;
}
.progress .bar{
  height:100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  width:0%;
}

/* Dark theme */
html[data-theme="dark"]{
  --bg:#0b1210; --panel:#0f1915; --ink:#e8f5ef; --muted:#a7c6b6;
  --accent:#85d1a0; --accent-2:#62c69b; --accent-3:#49b37f;
  --card:#12201acc; --ring: rgba(133,209,160,.45); --shadow: 0 14px 34px rgba(0,0,0,.30);
  --link:#8de0b1; --link-visited:#a1d6bd; --code:#0e1412; --code-ink:#d9fff0;
}
/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal, .reveal.in{animation:none; transform:none; opacity:1}
  .card, .btn, a::after{transition:none}
}