/* assets/css/index.css — tonirulislam.tech homepage */
/* Colour palette: warm orange #e8673a + amber + peach (matches 404.php) */

/* ═══════════════════════════════════════════════════════════
   ANIMATED BACKGROUND LAYERS
   ═══════════════════════════════════════════════════════════ */

#bg-blobs {
  position: fixed; inset: 0; z-index: 0;
  overflow: hidden; pointer-events: none;
}
.bg-blob {
  position: absolute; border-radius: 50%;
  filter: blur(80px); will-change: transform;
}
/* Blob 1 — amber top-right */
.bg-blob-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, #fef3c7 0%, #fde68a 40%, transparent 70%);
  top: -320px; right: -200px; opacity: 0.6;
  animation: bgBlob1 18s ease-in-out infinite alternate;
}
/* Blob 2 — peach/orange bottom-left */
.bg-blob-2 {
  width: 620px; height: 620px;
  background: radial-gradient(circle, #fde8dc 0%, #fca07a 45%, transparent 70%);
  bottom: 8%; left: -180px; opacity: 0.5;
  animation: bgBlob2 22s ease-in-out infinite alternate;
}
/* Blob 3 — soft indigo centre (accent contrast) */
.bg-blob-3 {
  width: 480px; height: 480px;
  background: radial-gradient(circle, #fef9ee 0%, #fde68a 50%, transparent 70%);
  top: 45%; left: 55%; transform: translate(-50%,-50%);
  opacity: 0.22;
  animation: bgBlob3 26s ease-in-out infinite alternate;
}
/* Blob 4 — warm green bottom-right */
.bg-blob-4 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, #fdf4e8 0%, #fcd9a0 50%, transparent 70%);
  bottom: 18%; right: 4%; opacity: 0.22;
  animation: bgBlob4 20s ease-in-out infinite alternate;
}
@keyframes bgBlob1 {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(-75px,55px) scale(1.13); }
}
@keyframes bgBlob2 {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(65px,-75px) scale(1.18); }
}
@keyframes bgBlob3 {
  from { transform: translate(-50%,-50%) scale(1); opacity: 0.18; }
  to   { transform: translate(-50%,-50%) scale(1.42); opacity: 0.35; }
}
@keyframes bgBlob4 {
  from { transform: translate(0,0) scale(1); opacity: 0.18; }
  to   { transform: translate(-48px,38px) scale(1.22); opacity: 0.28; }
}

/* Dot grid */
#bg-dots {
  position: fixed; inset: 0; z-index: 1;
  background-image: radial-gradient(circle, rgba(60,40,20,0.055) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

/* Floating rings */
#bg-rings {
  position: fixed; inset: 0; z-index: 2;
  pointer-events: none; overflow: hidden;
}
.bg-ring {
  position: absolute; border-radius: 50%;
  border: 1.5px solid; opacity: 0;
  animation: bgRingRise linear infinite;
  will-change: transform, opacity;
}
@keyframes bgRingRise {
  0%   { opacity: 0;    transform: translateY(110vh) rotate(0deg) scale(0.5); }
  6%   { opacity: 0.7; }
  94%  { opacity: 0.35; }
  100% { opacity: 0;    transform: translateY(-18vh) rotate(380deg) scale(1.25); }
}

/* Ensure all page content sits above bg layers.
   nav is intentionally excluded — position:relative breaks sticky. */
.hero,
.sdiv,
.section,
.ns,
footer.site-footer,
#so {
  position: relative;
  z-index: 10;
}

/* Sticky nav — must sit above all fixed bg layers (z-index 0-2) */
#mainNav {
  position: sticky !important;
  top: 0;
  z-index: 100;
}

/* Dark mode — dim blobs so they don't overpower dark surfaces */
[data-theme="dark"] .bg-blob-1 { opacity: 0.12; }
[data-theme="dark"] .bg-blob-2 { opacity: 0.10; }
[data-theme="dark"] .bg-blob-3 { opacity: 0.08; }
[data-theme="dark"] .bg-blob-4 { opacity: 0.08; }
[data-theme="dark"] #bg-dots {
  background-image: radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
}

/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero {
  max-width: 1200px; margin: 0 auto;
  padding: clamp(64px,10vw,120px) max(24px,5vw) clamp(48px,6vw,80px);
  text-align: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(60,40,20,0.07);
  animation: heroFadeDown 0.7s cubic-bezier(.16,1,.3,1) both;
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-color);
  animation: heroDotBlink 1.4s ease-in-out infinite;
}
@keyframes heroDotBlink { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.25;transform:scale(0.6)} }
@keyframes heroFadeDown { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:none} }

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 700; line-height: 1.1; letter-spacing: -0.025em;
  color: var(--text-black); margin-bottom: 20px;
  animation: heroFadeUp 0.7s 0.1s cubic-bezier(.16,1,.3,1) both;
}
.hero h1 em {
  font-style: italic; color: var(--accent-color);
  position: relative;
}
/* Animated underline on em word */
.hero h1 em::after {
  content: '';
  position: absolute; left: 0; bottom: -4px;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-mid));
  border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  animation: underlineGrow 0.8s 0.7s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes underlineGrow { to { transform: scaleX(1); } }

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-muted); max-width: 560px;
  margin: 0 auto 36px; line-height: 1.75;
  animation: heroFadeUp 0.7s 0.2s cubic-bezier(.16,1,.3,1) both;
}
.hero-actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  animation: heroFadeUp 0.7s 0.3s cubic-bezier(.16,1,.3,1) both;
}
@keyframes heroFadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:none} }

/* ═══════════════════════════════════════════════════════════
   SECTION LAYOUT
   ═══════════════════════════════════════════════════════════ */
.section {
  max-width: 1200px; margin: 0 auto;
  padding: clamp(40px,5vw,64px) max(24px,5vw);
}
.sh2 {
  display: flex; align-items: baseline;
  justify-content: space-between; gap: 16px; margin-bottom: 28px;
}
.st {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem); font-weight: 700;
  color: var(--text-black); letter-spacing: -0.02em;
}
.sl {
  font-size: 0.85rem; font-weight: 500;
  color: var(--accent-color); text-decoration: none; white-space: nowrap;
}
.sl:hover { text-decoration: underline; }

.sdiv { max-width: 1200px; margin: 0 auto; padding: 0 max(24px,5vw); }
.sdiv hr { border: none; border-top: 1px solid var(--border); }

/* ═══════════════════════════════════════════════════════════
   FEATURED GRID
   ═══════════════════════════════════════════════════════════ */
.fg {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 20px;
}
@media (max-width: 900px) { .fg { grid-template-columns: 1fr 1fr; } }
@media (max-width: 580px) { .fg { grid-template-columns: 1fr; } }

/* ═══════════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════════ */
.card {
  display: flex; flex-direction: column;
  border-radius: 18px; border: 1.5px solid var(--border);
  background: var(--card-bg); text-decoration: none; color: inherit;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(.16,1,.3,1),
              box-shadow  0.25s cubic-bezier(.16,1,.3,1),
              border-color 0.2s;
  box-shadow: 0 2px 8px rgba(60,40,20,0.06);
  animation: cardSlideIn 0.55s cubic-bezier(.16,1,.3,1) both;
}
.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.12s; }
.card:nth-child(3) { animation-delay: 0.19s; }
.card:nth-child(4) { animation-delay: 0.26s; }
.card:nth-child(5) { animation-delay: 0.33s; }
.card:nth-child(6) { animation-delay: 0.40s; }
@keyframes cardSlideIn {
  from { opacity:0; transform:translateY(22px) scale(0.97); }
  to   { opacity:1; transform:none; }
}
.card:hover {
  transform: translateY(-5px) scale(1.01);
  box-shadow: 0 16px 40px rgba(60,40,20,0.12);
  border-color: var(--accent-color);
}

/* Card colour variants — warm palette */
.c1 { --card-accent: rgba(232,103,58,0.07); }  /* orange */
.c2 { --card-accent: rgba(239,68,68,0.06); }   /* red */
.c3 { --card-accent: rgba(245,158,11,0.07); }  /* amber */
.c4 { --card-accent: rgba(16,185,129,0.06); }  /* green */
.c5 { --card-accent: rgba(2,132,199,0.06); }   /* blue */

.cip {
  width: 100%; overflow: hidden;
  background: var(--card-accent, rgba(232,103,58,0.07));
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(.16,1,.3,1);
}
.card:hover .cip { transform: scale(1.03); }
.cip-emoji { display: flex; align-items: center; justify-content: center; }
.card-emoji { font-size: 2.6rem; }
.cip-img img { transition: transform 0.4s cubic-bezier(.16,1,.3,1); }
.card:hover .cip-img img { transform: scale(1.06); }

.cb { padding: 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.ct {
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem; font-weight: 700; line-height: 1.3;
  color: var(--text-black); transition: color 0.2s;
}
.card:hover .ct { color: var(--accent-color); }
.ce { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; flex: 1; }
.cm {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.78rem; color: var(--text-muted); margin-top: 4px;
}
.av {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-color); color: #fff;
  font-size: 0.65rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.md { opacity: 0.4; }
.card-hero .cb { padding: 24px; }
.card-hero .ct { font-size: 1.25rem; }
.no-posts {
  grid-column: 1/-1; text-align: center; padding: 60px 0;
  color: var(--text-muted); font-size: 0.95rem;
}

/* ═══════════════════════════════════════════════════════════
   POSTS GRID
   ═══════════════════════════════════════════════════════════ */
.pg {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;
}
@media (max-width: 640px) { .pg { grid-template-columns: 1fr; } }
.pg.loading { opacity: 0.45; pointer-events: none; transition: opacity 0.2s; }

/* ═══════════════════════════════════════════════════════════
   TOPIC TABS
   ═══════════════════════════════════════════════════════════ */
.tw { display: flex; flex-wrap: wrap; gap: 8px; padding: 20px 0 0; }
.tp {
  padding: 8px 20px;
  border: 1.5px solid var(--border); border-radius: 100px;
  background: var(--bg-secondary);
  font-family: 'DM Sans', sans-serif; font-size: 0.85rem; font-weight: 500;
  color: var(--text-muted); cursor: pointer; transition: all 0.2s;
}
.tp:hover { border-color: var(--accent-color); color: var(--accent-color); }
.tp.active {
  background: var(--accent-color); border-color: var(--accent-color); color: #fff;
  box-shadow: 0 3px 12px var(--accent-glow, rgba(232,103,58,0.28));
}

/* ═══════════════════════════════════════════════════════════
   PAGINATION
   ═══════════════════════════════════════════════════════════ */
.pag { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-top: 36px; }
.pag-btn {
  min-width: 40px; height: 40px; padding: 0 14px;
  border: 1.5px solid var(--border); border-radius: 10px;
  background: var(--card-bg); font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem; font-weight: 500; color: var(--text-muted);
  cursor: pointer; transition: all 0.2s;
}
.pag-btn:hover { border-color: var(--accent-color); color: var(--accent-color); }
.pag-btn.active {
  background: var(--accent-color); border-color: var(--accent-color); color: #fff;
  box-shadow: 0 3px 12px var(--accent-glow, rgba(232,103,58,0.28));
}

/* ═══════════════════════════════════════════════════════════
   NEWSLETTER
   ═══════════════════════════════════════════════════════════ */
.ns {
  max-width: 1200px; margin: 0 auto;
  padding: 0 max(24px,5vw) clamp(64px,8vw,100px);
}
.nc {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: 48px; align-items: center;
  background: var(--card-bg);
  border: 1.5px solid var(--border); border-radius: 24px;
  padding: clamp(32px,4vw,56px);
  box-shadow: 0 4px 24px rgba(60,40,20,0.07);
  position: relative; overflow: hidden;
}
/* Shimmer accent bar — orange gradient */
.nc::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-mid), #fbbf24, var(--accent-color));
  background-size: 300% 100%;
  animation: shimmerBar 4s linear infinite;
}
@keyframes shimmerBar { 0%{background-position:100% 0} 100%{background-position:-100% 0} }

.nt {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem); font-weight: 700; line-height: 1.2;
  color: var(--text-black); margin-bottom: 12px;
}
.nsub { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; max-width: 380px; }
.nf { display: flex; flex-direction: column; gap: 12px; }
.ni {
  padding: 13px 16px; border: 1.5px solid var(--border); border-radius: 12px;
  background: var(--input-bg); font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem; color: var(--text-black); outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ni:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(232,103,58,0.12);
}
.ni::placeholder { color: var(--text-muted); }
.nb {
  padding: 14px; background: var(--accent-color); color: #fff;
  border: none; border-radius: 12px;
  font-family: 'DM Sans', sans-serif; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; box-shadow: 0 4px 16px var(--accent-glow, rgba(232,103,58,0.3));
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
}
.nb:hover { opacity: 0.88; transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow, rgba(232,103,58,0.38)); }
.nn { font-size: 0.78rem; color: var(--text-muted); text-align: center; }

@media (max-width: 740px) {
  .nc { grid-template-columns: 1fr; gap: 32px; }
}



/* ── Search overlay — FIXED ──────────────────────────────── */

/* 1. Overlay: use visibility+opacity instead of display:none/flex
      so transitions work and it never breaks layout */
#so {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(26,22,18,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  /* Hidden state */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;

  display: flex;                     /* always flex — toggled via opacity */
  align-items: flex-start;
  justify-content: center;
  padding-top: clamp(60px, 12vh, 120px);

  transition: opacity 0.22s ease, visibility 0.22s ease;
}

/* Visible state — JS adds .open */
#so.open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

/* 2. Search box — slide-down entrance */
.sb {
  width: min(600px, 92vw);
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);

  transform: translateY(-12px) scale(0.98);
  transition: transform 0.25s cubic-bezier(.16,1,.3,1);
}
#so.open .sb {
  transform: translateY(0) scale(1);
}

/* 3. Search input row */
.sir {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--divider);
}

/* Search icon inside .sir — keep it styled */
.sir svg {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  flex-shrink: 0;
}

#si {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  color: var(--text-dark);
  caret-color: var(--accent-color);
  min-width: 0;           /* prevents overflow in flex */
}
#si::placeholder { color: var(--text-muted); }

/* Close button */
.sc {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.sc:hover {
  background: var(--accent-light);
  color: var(--accent-color);
}

/* 4. Results area */
.sr {
  max-height: 360px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
}
/* Custom scrollbar */
.sr::-webkit-scrollbar { width: 4px; }
.sr::-webkit-scrollbar-track { background: transparent; }
.sr::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.sr::-webkit-scrollbar-thumb:hover { background: var(--accent-color); }

/* Empty / loading state */
.se {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Result item */
.sri {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
  cursor: pointer;
  border-bottom: 1px solid var(--divider);
}
.sri:last-child { border-bottom: none; }
.sri:hover,
.sri.sk {
  background: var(--accent-light);
  outline: none;
}
.sri:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: -2px;
}

.sriem {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.srit {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 2px;
}
.srim {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 5. Footer hints */
.sf {
  display: flex;
  gap: 20px;
  padding: 10px 20px;
  border-top: 1px solid var(--divider);
  background: var(--bg-secondary);
  flex-wrap: wrap;
}
.sh {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.sh kbd {
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--card-bg);
  font-size: 0.7rem;
  font-family: inherit;
  color: var(--text-dark);
}

/* 6. Search trigger button — ensure it's always clickable */
.search-trigger {
  position: relative;
  z-index: 101;          /* above nav bg */
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  margin: 0 4px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-muted);
  font-size: 0.83rem;
  font-weight: 400;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  white-space: nowrap;
}
.search-trigger:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--accent-light);
}
.st-icon { width: 15px; height: 15px; flex-shrink: 0; }
.st-text { display: none; }
@media (min-width: 860px) { .st-text { display: inline; } }
.st-kbd { display: flex; gap: 3px; }
.st-kbd kbd {
  padding: 1px 5px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: inherit;
}