:root{
  --primary:#0d7a6e;
  --primary-dark:#095c53;
  --accent:#ff7a45;
  --bg:#f4f8f7;
  --card:#ffffff;
  --text:#1c2b2a;
  --muted:#6b7a78;
  --radius:16px;
  --border:#eaf2f0;
  --chip:#eafaf6;
  --heading:#095c53;
  --input-border:#dfe8e6;
}
/* থিম: ক্রিম */
:root[data-theme="cream"]{
  --bg:#f7efdd;--card:#fffaf0;--text:#3a2e1c;--muted:#8a7a62;
  --border:#eadcc0;--chip:#f6e8c8;--heading:#7a4f10;--input-border:#e0d0ac;
}
/* থিম: কালো */
:root[data-theme="black"]{
  --bg:#0b0d0d;--card:#151818;--text:#f1f4f3;--muted:#9aa6a3;
  --border:#262c2b;--chip:#1e2a28;--heading:#5fd3c4;--input-border:#2f3837;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:'Noto Sans Bengali','Segoe UI',sans-serif;
  background:var(--bg);
  color:var(--text);
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
a{text-decoration:none;color:inherit;}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:12px;
  background:linear-gradient(120deg,var(--primary),var(--primary-dark));
  padding:14px 16px;padding-top:calc(14px + env(safe-area-inset-top,0px));
  color:#fff;
}
.icon-btn{background:rgba(255,255,255,.15);border:none;border-radius:10px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;}
.brand{flex:1;font-size:1.1rem;font-weight:700;}
.login-pill{width:auto;padding:0 14px;border-radius:999px;font-size:.85rem;font-weight:600;background:var(--accent);}

/* Drawer */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:40;display:none;}
.overlay.show{display:block;}
.drawer{
  position:fixed;top:0;left:-300px;width:280px;height:100%;
  background:var(--card);color:var(--text);z-index:50;transition:left .25s ease;
  overflow-y:auto;box-shadow:2px 0 20px rgba(0,0,0,.15);
}
.drawer.open{left:0;}
.drawer-head{background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:#fff;padding:28px 20px;text-align:center;}
.drawer-logo{font-size:2.2rem;}
.drawer-title{font-weight:700;margin-top:6px;}
.drawer-sub{font-size:.8rem;opacity:.85;margin-top:4px;}
.drawer-link{display:block;padding:14px 22px;font-size:.98rem;color:var(--text);border-bottom:1px solid var(--border);}
.drawer-link:active{background:var(--bg);}
.drawer hr{border:none;border-top:6px solid var(--bg);}

/* Content */
.content{padding:16px;max-width:720px;margin:0 auto;padding-bottom:60px;}
.section-title{font-size:1.25rem;font-weight:800;margin:18px 0 12px;color:var(--heading);}

/* Slider */
.slider-box{position:relative;}
.slider-wrap{position:relative;overflow-x:auto;display:flex;gap:12px;scroll-snap-type:x mandatory;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
.slider-wrap::-webkit-scrollbar{display:none;}
.slide-item{flex:0 0 88%;scroll-snap-align:start;border-radius:var(--radius);overflow:hidden;box-shadow:0 6px 18px rgba(0,0,0,.08);position:relative;aspect-ratio:16/8;}
.slide-item img{width:100%;height:100%;object-fit:cover;display:block;}
.slide-cap{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.65));color:#fff;padding:14px 12px 10px;font-weight:600;font-size:.9rem;}

/* Category grid */
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.cat-card{background:var(--card);border-radius:var(--radius);padding:18px 14px;box-shadow:0 4px 14px rgba(13,122,110,.08);border:1px solid var(--border);display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
.cat-card .emoji{font-size:1.7rem;background:var(--chip);width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;}
.cat-card .name{font-weight:700;font-size:.95rem;line-height:1.3;}

/* Post list */
.post-row{display:flex;gap:12px;background:var(--card);border-radius:var(--radius);padding:12px;margin-bottom:12px;box-shadow:0 3px 10px rgba(0,0,0,.06);align-items:center;}
.post-row img{width:64px;height:64px;border-radius:12px;object-fit:cover;flex-shrink:0;background:#eee;}
.post-row .title{font-weight:700;font-size:.95rem;}
.post-row .meta{font-size:.75rem;color:var(--muted);margin-top:2px;}
.new-badge{background:var(--accent);color:#fff;font-size:.65rem;padding:2px 8px;border-radius:999px;font-weight:700;margin-left:6px;}

/* Post detail */
.post-hero{width:100%;border-radius:var(--radius);overflow:hidden;margin-bottom:16px;box-shadow:0 6px 16px rgba(0,0,0,.1);}
.post-hero img{width:100%;display:block;}
.post-title{font-size:1.3rem;font-weight:800;margin-bottom:10px;}
.post-content{line-height:1.9;font-size:.98rem;white-space:pre-line;margin-bottom:20px;}
.link-list{display:flex;flex-direction:column;gap:10px;}
.link-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px;border-radius:12px;color:#fff;font-weight:700;font-size:.95rem;box-shadow:0 4px 10px rgba(0,0,0,.12);}

/* Forms */
.form-card{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.08);max-width:420px;margin:20px auto;}
.form-card h2{color:var(--heading);margin-bottom:6px;}
.form-card p.sub{color:var(--muted);font-size:.85rem;margin-bottom:18px;}
.form-group{margin-bottom:14px;}
.form-group label{display:block;font-size:.85rem;margin-bottom:6px;font-weight:600;}
.form-group input, .form-group textarea, .form-group select{
  width:100%;padding:12px 14px;border-radius:10px;border:1.5px solid var(--input-border);background:var(--card);color:var(--text);font-size:.95rem;font-family:inherit;
}
.btn-primary{width:100%;padding:13px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-weight:700;font-size:1rem;cursor:pointer;}
.btn-primary:active{background:var(--primary-dark);}
.form-links{display:flex;justify-content:space-between;margin-top:14px;font-size:.85rem;}
.alert{padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:.88rem;}
.alert-error{background:#fdecea;color:#b3261e;}
.alert-success{background:#e7f7ee;color:#0d7a45;}

/* Terms modal */
.terms-modal{position:fixed;inset:0;background:rgba(10,30,28,.85);z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;}
.terms-modal.hide{display:none;}
.terms-box{background:var(--card);color:var(--text);border-radius:18px;padding:26px 22px;max-width:400px;max-height:80vh;overflow-y:auto;text-align:center;}
.terms-logo{font-size:2.5rem;}
.terms-box h2{margin:8px 0 12px;color:var(--heading);}
.terms-box p{font-size:.9rem;line-height:1.7;color:var(--muted);text-align:left;margin-bottom:18px;}
.btn-accept{width:100%;padding:13px;border:none;border-radius:10px;background:var(--accent);color:#fff;font-weight:700;font-size:.95rem;cursor:pointer;}

.empty-note{text-align:center;color:var(--muted);padding:40px 10px;}
.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--heading);font-weight:600;margin-bottom:14px;}
.ad-slot{max-width:720px;margin:10px auto;padding:0 16px;}

body{transition:background .2s,color .2s;}

/* Slider arrows (শুধু মাউস/ডেস্কটপে দেখায়) */
.sl-btn{position:absolute;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:50%;border:none;background:rgba(0,0,0,.45);color:#fff;font-size:1.2rem;line-height:1;cursor:pointer;z-index:2;display:flex;align-items:center;justify-content:center;}
.sl-btn.prev{left:6px;}
.sl-btn.next{right:6px;}
@media (hover:none){.sl-btn{display:none;}}

/* Advertisement slider */
.ad-item{flex:0 0 100%;scroll-snap-align:start;position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/6;box-shadow:0 6px 18px rgba(0,0,0,.08);background:var(--card);}
.ad-item img{width:100%;height:100%;object-fit:cover;display:block;}
.ad-tag{position:absolute;top:8px;right:8px;background:rgba(0,0,0,.55);color:#fff;font-size:.65rem;padding:2px 8px;border-radius:999px;}
.ad-cat{position:absolute;top:8px;left:8px;background:var(--accent);color:#fff;font-size:.68rem;font-weight:700;padding:3px 10px;border-radius:999px;}

/* News / update slider */
.news-item{flex:0 0 82%;scroll-snap-align:start;position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;box-shadow:0 6px 18px rgba(0,0,0,.1);background:var(--card);}
.news-item img{width:100%;height:100%;object-fit:cover;display:block;}
.news-meta{font-size:.7rem;font-weight:500;opacity:.9;margin-bottom:3px;}

/* Theme switcher (drawer) */
.drawer-label{padding:14px 22px 6px;font-size:.85rem;font-weight:700;color:var(--muted);}
.theme-row{display:flex;gap:8px;padding:4px 16px 16px;}
.theme-btn{flex:1;padding:10px 4px;border-radius:10px;border:2px solid var(--border);background:var(--card);color:var(--text);font-size:.82rem;font-family:inherit;cursor:pointer;}
.theme-btn.active{border-color:var(--primary);font-weight:700;}