/* ========== Variables & Reset ========== */
:root{
  --bg: #0f1724;
  --panel: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.06);
  --muted: rgba(255,255,255,0.75);
  --accent: #7c5cff;
  --accent-2: #3ddc84;
  --text: #eef2ff;
  --radius: 14px;
  --transition: 300ms cubic-bezier(.2,.9,.3,1);
}

:root[data-theme="light"]{
  --bg: linear-gradient(180deg,#f5f7fb,#eef2f8);
  --panel: rgba(10,12,20,0.04);
  --glass-border: rgba(255,255,255,0.6);
  --muted: #263141;
  --text: #0b1220;
  --accent: #6b46ff;
  --accent-2: #0ea5a1;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(124,92,255,0.06), transparent 8%), var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
  transition: background 400ms ease, color 400ms ease;
}

/* Reading progress */
.progress-wrap{position:fixed;left:0;right:0;top:0;height:6px;z-index:9999;pointer-events:none}
.progress{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width 120ms linear}

/* ========== Header ========== */
.site-header{
  position:sticky;top:0;z-index:40;
  padding:14px 20px;
  backdrop-filter: blur(8px) saturate(120%);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-bottom:1px solid var(--glass-border);
}

.header-inner{
  max-width:1150px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
}

.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.logo{width:52px;height:52px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#ff7ab6);color:white;font-weight:700;box-shadow:0 8px 26px rgba(0,0,0,0.35)}
.brand-text h1{margin:0;font-size:18px}
.tagline{margin:0;font-size:12px;color:var(--muted)}

/* Nav */
.nav{display:flex;align-items:center;gap:8px}
.nav-list{display:flex;list-style:none;gap:12px;margin:0;padding:0;align-items:center}
.nav-list a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:10px;transition:all var(--transition)}
.nav-list a:hover{background:rgba(255,255,255,0.03);color:var(--text);transform:translateY(-2px)}
.icon-btn{background:none;border:0;padding:8px;border-radius:10px;cursor:pointer;color:var(--muted)}

/* mobile nav button (hidden on desktop) */
.mobile-nav-btn{display:none;background:none;border:0;padding:8px;font-size:20px;color:var(--muted);cursor:pointer}

/* ========== Hero ========== */
.main{max-width:1150px;margin:28px auto;padding:0 20px}
.hero{display:flex;gap:28px;align-items:center;padding:26px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--glass-border);backdrop-filter: blur(10px) saturate(130%);box-shadow:0 18px 40px rgba(2,6,23,0.45);overflow:hidden}
.hero-left{flex:1;min-width:240px}
.eyebrow{font-size:12px;color:var(--muted);letter-spacing:0.06em;text-transform:uppercase;margin-bottom:8px}
.hero-title{margin:0;font-size:26px;line-height:1.03}
.hero-desc{color:var(--muted);margin-top:10px}
.hero-actions{margin-top:18px;display:flex;gap:12px}
.btn{display:inline-block;padding:10px 14px;border-radius:999px;border:1px solid rgba(255,255,255,0.04);text-decoration:none;font-weight:700;cursor:pointer;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01))}
.btn.primary{background:linear-gradient(90deg,var(--accent),var(--accent-2));color:white;border:0}
.btn.ghost{background:transparent;color:var(--muted)}

/* hero art */
.hero-art{width:42%;min-width:220px;display:flex;justify-content:center}
.art-block{width:100%;height:220px;border-radius:12px;display:grid;place-items:center;font-weight:800;color:white;background:linear-gradient(135deg,var(--accent),#ff7ab6);box-shadow:0 18px 40px rgba(2,6,23,0.5)}

/* ========== Posts ========== */
.posts-section{margin-top:28px}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.section-head h3{margin:0}
.muted{color:var(--muted)}

.post-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:18px;
}

/* Masonry-like column fallback for narrow widths */
.post-card{
  background:var(--panel);
  border-radius:12px;
  border:1px solid var(--glass-border);
  overflow:hidden;
  box-shadow:0 8px 26px rgba(2,6,23,0.4);
  transition: transform 380ms cubic-bezier(.2,.9,.3,1), box-shadow 380ms;
  display:flex;flex-direction:column;
  transform-origin:center;
  opacity:0;
  transform:translateY(18px) scale(0.995);
}
.post-card.loaded{opacity:1;transform:none}
.post-card:focus-within, .post-card:hover{transform:translateY(-8px) scale(1.01);box-shadow:0 20px 50px rgba(2,6,23,0.6)}
.thumb{height:150px;background-size:cover;background-position:center;display:grid;place-items:center;color:white;font-weight:800;font-size:18px}
.post-body{padding:14px;display:flex;flex-direction:column;gap:10px}
.post-body h4{margin:0}
.excerpt{margin:0;color:var(--muted);font-size:14px}
.meta{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px}
.tag{background:linear-gradient(90deg,var(--accent),var(--accent-2));padding:6px 8px;border-radius:999px;color:white;font-weight:700;font-size:12px}

/* post actions */
.post-actions{margin-top:auto;display:flex;justify-content:flex-end}
.link{color:var(--accent);font-weight:700;text-decoration:none}

/* ========== Modal ========== */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:linear-gradient(180deg, rgba(2,6,23,0.6), rgba(2,6,23,0.8));z-index:9999;padding:28px}
.modal.open{display:flex}
.modal-card{width:min(900px,96%);max-height:86vh;overflow:auto;border-radius:14px;background:var(--panel);border:1px solid var(--glass-border);backdrop-filter: blur(12px) saturate(140%);box-shadow:0 30px 80px rgba(2,6,23,0.7);padding:20px}
.modal-header{display:flex;align-items:center;gap:12px}
.close-btn{margin-left:auto;background:none;border:0;color:var(--muted);font-weight:700;cursor:pointer;padding:6px}

/* ========== Footer ========== */
.site-footer{max-width:1150px;margin:28px auto;padding:18px;border-radius:12px;background:var(--panel);border:1px solid var(--glass-border);backdrop-filter:blur(8px);text-align:center;color:var(--muted)}

/* ========== Scroll to top ========== */
.scroll-top{position:fixed;right:20px;bottom:20px;padding:12px 14px;border-radius:12px;border:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));color:white;font-weight:700;cursor:pointer;box-shadow:0 10px 30px rgba(0,0,0,0.35);display:none;z-index:999}
.scroll-top.show{display:block}

/* ========== Animations & responsive ========== */
@keyframes popIn {
  from{opacity:0;transform:translateY(18px) scale(.995)}
  to{opacity:1;transform:none}
}

/* Stagger helper using CSS variable set by JS */
.post-card.loaded{animation:popIn 420ms cubic-bezier(.2,.9,.3,1) var(--delay,0ms) both}

/* Responsive */
@media (max-width:1000px){
  .post-grid{grid-template-columns: repeat(1,1fr)}
  .hero{flex-direction:column;gap:18px}
  .hero-art{width:100%}
}

@media (max-width:720px){
  .nav-list{position:fixed;inset:auto 0 0 0;bottom:0;left:0;right:0;background:var(--panel);padding:12px;display:none;flex-direction:row;justify-content:space-around;border-top:1px solid var(--glass-border)}
  .nav-list.open{display:flex}
  .mobile-nav-btn{display:inline-flex}
  .nav-list a{padding:8px 12px}
  .header-inner{gap:8px}
}