/* =====================================================================
   দিনলিপি CMS — Design System
   -----------------------------------------------------------------------
   Concept: a real notebook page. Warm ivory paper, a red margin rule,
   faint horizontal ruled lines, a hand-bound spiral edge, and dog-eared
   page corners that lift on hover like turning a page.
   Type: "Atma" (handwritten Bangla display) for headings/quotes,
   "Tiro Bangla" (Bangla book-serif) for reading body copy,
   "Hind Siliguri" (clean Bangla sans) for UI chrome/labels/buttons.
   ===================================================================== */

:root{
  /* ---- Light "paper" palette ---- */
  --paper:        #FAF3E4;   /* warm ivory page            */
  --paper-raised: #FFFDF8;   /* card surface, slightly lighter */
  --rule-line:    #DED0AE;   /* faint horizontal notebook rule */
  --margin-rule:  #D98E86;   /* soft red margin line          */
  --ink:          #3B2E23;   /* primary text = "ink" brown-black */
  --ink-soft:     #6B5B48;   /* secondary text                */
  --ink-faint:    #9C8C74;   /* meta text / timestamps        */
  --accent:       #2E4374;   /* ink-blue: links, primary actions */
  --accent-2:     #B6552F;   /* terracotta wax-seal: tags, highlights */
  --accent-2-soft:#F3E0D3;
  --gold:         #B08948;   /* gilt edge accent for featured items */
  --spiral:       #C9BC9C;
  --border:       #E7DABB;
  --shadow-color: 28 20% 30%;
  --success:      #3E7A4C;
  --danger:       #B23A2E;

  --font-display: 'Atma', 'Caveat', cursive;
  --font-body:    'Tiro Bangla', 'Literata', Georgia, serif;
  --font-ui:      'Hind Siliguri', 'Inter', system-ui, sans-serif;

  --radius-page:  18px;
  --radius-sm:    10px;
  --transition:   .28s cubic-bezier(.4,.1,.2,1);
}

[data-theme="dark"]{
  --paper:        #211C16;
  --paper-raised: #2A241C;
  --rule-line:    #3A3226;
  --margin-rule:  #7A4640;
  --ink:          #ECE1CB;
  --ink-soft:     #C9BB9F;
  --ink-faint:    #8C7F68;
  --accent:       #8FA8E0;
  --accent-2:     #E0966B;
  --accent-2-soft:#3B2C22;
  --gold:         #D8B876;
  --spiral:       #4A4130;
  --border:       #3A3226;
  --shadow-color: 0 0% 0%;
  --success:      #6FBF80;
  --danger:       #E27C6E;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.06rem;
  line-height: 1.85;
  transition: background var(--transition), color var(--transition);
  background-image:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent 38px,
      var(--rule-line) 39px
    );
  background-attachment: local;
}

/* subtle grain / paper texture overlay */
body::before{
  content:"";
  position: fixed; inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/></svg>");
  mix-blend-mode: multiply;
}

h1,h2,h3,h4,.font-display{
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .2px;
}

.font-ui{ font-family: var(--font-ui); }

a{ color: var(--accent); text-decoration: none; }
a:hover{ color: var(--accent-2); }

/* ---------------------------------------------------------------------
   Notebook shell: spiral-bound left margin on wide screens
--------------------------------------------------------------------- */
.notebook-shell{
  position:relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------------------------------------------------------------------
   Top bar
--------------------------------------------------------------------- */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px dashed var(--border);
}
.brand{
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--ink);
  display:flex; align-items:center; gap:.5rem;
}
.brand .pin{ color: var(--accent-2); }
.nav-link.font-ui{
  color: var(--ink-soft);
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
}
.nav-link.font-ui.active,
.nav-link.font-ui:hover{ color: var(--accent); }
.nav-link.font-ui.active::after{
  content:"";
  position:absolute; left:0; right:0; bottom:-2px; height:6px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 10'><path d='M2 6 Q 25 2 50 6 T 98 6' stroke='%23B6552F' stroke-width='3' fill='none' stroke-linecap='round'/></svg>") no-repeat center / contain;
}

.theme-toggle{
  border: 1px solid var(--border);
  background: var(--paper-raised);
  color: var(--ink);
  border-radius: 50px;
  width: 42px; height: 42px;
  display:flex; align-items:center; justify-content:center;
  transition: transform var(--transition), background var(--transition);
}
.theme-toggle:hover{ transform: rotate(-14deg) scale(1.06); }

/* ---------------------------------------------------------------------
   Advanced search bar + live-suggestion dropdown
--------------------------------------------------------------------- */
.search-wrap{ position: relative; width: 260px; }
.search-wrap .search-icon{
  position:absolute; left:14px; top:50%; transform:translateY(-50%);
  color: var(--ink-faint); pointer-events:none; z-index:2;
}
.search-wrap input[type="search"]{
  border-radius: 50px; width:100%;
  background: var(--paper-raised); border:1.5px solid var(--border); color: var(--ink);
  padding-left: 2.5rem; font-size:.92rem;
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
}
.search-wrap input[type="search"]:focus{
  border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 15%, transparent);
  outline: none;
}
.search-wrap input[type="search"]::-webkit-search-cancel-button{ cursor:pointer; }

.search-suggestions{
  position:absolute; top: calc(100% + 10px); left:0; right:0;
  background: var(--paper-raised); border:1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 34px -12px hsl(var(--shadow-color) / .35);
  overflow:hidden; z-index: 60;
  animation: dropdownOpen .18s ease;
  max-height: 420px; overflow-y:auto;
}
@keyframes dropdownOpen{ from{ opacity:0; transform: translateY(-6px);} to{ opacity:1; transform:none;} }

.search-suggest-item{
  display:block; padding:.7rem 1rem; text-decoration:none;
  border-bottom: 1px dashed var(--border);
  transition: background var(--transition);
}
.search-suggest-item:last-of-type{ border-bottom:none; }
.search-suggest-item:hover, .search-suggest-item.active{ background: var(--accent-2-soft); }
.search-suggest-type{
  font-family: var(--font-ui); font-size:.68rem; font-weight:700;
  color: var(--accent-2); text-transform: uppercase; letter-spacing:.04em;
  display:block; margin-bottom:.15rem;
}
.search-suggest-title{
  font-family: var(--font-body); font-weight:600; color: var(--ink);
  display:block; font-size:.98rem;
}
.search-suggest-excerpt{
  font-family: var(--font-ui); font-size:.78rem; color: var(--ink-faint);
  display:block; margin-top:.15rem;
  white-space: nowrap; overflow:hidden; text-overflow:ellipsis;
}
.search-suggest-viewall{
  display:block; text-align:center; padding:.6rem;
  font-size:.82rem; font-weight:700; color: var(--accent);
  background: var(--paper); text-decoration:none;
}
.search-suggest-viewall:hover{ color: var(--accent-2); }
.search-empty{
  padding: 1rem; text-align:center; font-size:.85rem; color: var(--ink-faint);
}

/* ---------------------------------------------------------------------
   Page / diary-card — the signature element:
   a torn-edge notebook sheet that lifts like a turned page on hover.
--------------------------------------------------------------------- */
.diary-card{
  position: relative;
  background: var(--paper-raised);
  border-radius: var(--radius-page);
  padding: 1.6rem 1.6rem 1.4rem;
  box-shadow: 0 1px 2px hsl(var(--shadow-color) / .08), 0 10px 24px -12px hsl(var(--shadow-color) / .28);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.diary-card::after{ /* dog-ear fold */
  content:"";
  position:absolute; top:0; right:0;
  width:0; height:0;
  border-style: solid;
  border-width: 0 26px 26px 0;
  border-color: transparent var(--paper) transparent transparent;
  filter: drop-shadow(-2px 2px 2px hsl(var(--shadow-color) / .25));
  transition: border-width var(--transition);
}
.diary-card:hover{
  transform: translateY(-4px) rotate(-.3deg);
  box-shadow: 0 4px 10px hsl(var(--shadow-color) / .12), 0 20px 34px -14px hsl(var(--shadow-color) / .35);
}
.diary-card:hover::after{ border-width: 0 34px 34px 0; }

.diary-card .post-type-badge{
  font-family: var(--font-ui);
  font-size: .72rem; font-weight: 700;
  letter-spacing: .04em;
  padding: .25rem .6rem;
  border-radius: 50px;
  background: var(--accent-2-soft);
  color: var(--accent-2);
  display:inline-block;
}

.diary-card .cover{
  border-radius: var(--radius-sm);
  overflow:hidden;
  margin-bottom: 1rem;
  aspect-ratio: 16/9;
  background: var(--rule-line);
  position: relative;
}
.diary-card .cover img{ width:100%; height:100%; object-fit:cover; display:block; transition: transform .5s ease; }
.diary-card:hover .cover img{ transform: scale(1.04); }

.diary-card h3{
  font-size: 1.55rem; margin: .35rem 0 .3rem;
}
.diary-card .excerpt{ color: var(--ink-soft); font-size: .98rem; }
.diary-card .meta{
  font-family: var(--font-ui);
  font-size: .82rem; color: var(--ink-faint);
  display:flex; gap:.9rem; align-items:center; margin-top:.9rem;
  flex-wrap: wrap;
}

/* Featured wax-seal ribbon */
.diary-card.featured::before{
  content: "★ নির্বাচিত";
  font-family: var(--font-ui);
  position:absolute; top:14px; left:-34px;
  transform: rotate(-40deg);
  background: var(--accent-2);
  color:#fff; font-size:.7rem; font-weight:700;
  padding: 3px 40px;
  box-shadow: 0 2px 6px hsl(var(--shadow-color)/.3);
}

/* ---------------------------------------------------------------------
   Buttons
--------------------------------------------------------------------- */
.btn-ink{
  font-family: var(--font-ui); font-weight:600;
  background: var(--accent); color:#fff;
  border: none; border-radius: 50px;
  padding: .6rem 1.4rem;
  transition: transform var(--transition), background var(--transition);
}
.btn-ink:hover{ background: var(--accent-2); color:#fff; transform: translateY(-1px); }
.btn-outline-ink{
  font-family: var(--font-ui); font-weight:600;
  background: transparent; color: var(--ink);
  border: 1.5px solid var(--border); border-radius: 50px;
  padding: .55rem 1.3rem;
}
.btn-outline-ink:hover{ border-color: var(--accent); color: var(--accent); }

/* ---------------------------------------------------------------------
   Filter pills (post types)
--------------------------------------------------------------------- */
.type-pill{
  font-family: var(--font-ui); font-weight:600; font-size:.88rem;
  padding:.45rem 1.05rem; border-radius:50px;
  border:1.5px dashed var(--border); color: var(--ink-soft);
  transition: all var(--transition);
  display:inline-block;
}
.type-pill.active, .type-pill:hover{
  border-style: solid; border-color: var(--accent); color: var(--accent); background: var(--accent-2-soft);
}

/* ---------------------------------------------------------------------
   Single post — reading experience
--------------------------------------------------------------------- */
.reading-progress{
  position: fixed; top:0; left:0; height:3px; width:0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 999; transition: width .1s linear;
}
.post-hero-cover{
  border-radius: var(--radius-page);
  overflow:hidden; margin-bottom:1.75rem;
  box-shadow: 0 20px 40px -20px hsl(var(--shadow-color)/.4);
}
.post-hero-cover img{ width:100%; max-height:460px; object-fit:cover; display:block; }

.post-body{
  font-size: 1.14rem; line-height: 2;
  max-width: 74ch; margin: 0 auto;
}
.post-body p{ margin-bottom: 1.4rem; }
.post-body h2, .post-body h3{ margin: 2rem 0 1rem; }
.post-body img{ max-width:100%; border-radius: var(--radius-sm); margin: 1.2rem 0; box-shadow: 0 8px 20px -10px hsl(var(--shadow-color)/.4); }
.post-body blockquote{
  border-left: 3px solid var(--accent-2);
  font-family: var(--font-display); font-size: 1.4rem;
  color: var(--ink-soft); padding: .3rem 0 .3rem 1.2rem; margin: 1.6rem 0;
}

.tag-chip{
  font-family: var(--font-ui); font-size:.82rem; font-weight:600;
  padding:.3rem .8rem; border-radius:50px;
  background: var(--accent-2-soft); color: var(--accent-2);
  display:inline-block; margin:0 .3rem .3rem 0;
}

.share-bar a{
  width:40px; height:40px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  background: var(--paper-raised); border:1px solid var(--border); color: var(--ink);
  transition: all var(--transition); margin-right:.5rem;
}
.share-bar a:hover{ background: var(--accent); color:#fff; transform: translateY(-2px); }

/* ---------------------------------------------------------------------
   Comments
--------------------------------------------------------------------- */
.comment-item{
  background: var(--paper-raised); border:1px solid var(--border);
  border-radius: var(--radius-sm); padding:1rem 1.2rem; margin-bottom:1rem;
}
.comment-item .author{ font-family: var(--font-ui); font-weight:700; color:var(--ink); }
.comment-item .date{ font-family: var(--font-ui); font-size:.78rem; color:var(--ink-faint); }
.reply-toggle{
  font-size:.8rem; font-weight:700; color: var(--accent);
  background:none; border:none; padding:0; cursor:pointer;
}
.reply-toggle:hover{ color: var(--accent-2); text-decoration: underline; }
.reply-form{ animation: replyOpen .25s ease; }
@keyframes replyOpen{ from{ opacity:0; transform: translateY(-6px);} to{ opacity:1; transform:none;} }
.replies{ position:relative; }

/* ---------------------------------------------------------------------
   Footer
--------------------------------------------------------------------- */
.site-footer{
  border-top: 1px dashed var(--border);
  font-family: var(--font-ui);
  color: var(--ink-soft);
  margin-top: 4rem;
}

/* ---------------------------------------------------------------------
   Skeleton / lazy-load fade-in
--------------------------------------------------------------------- */
img.lazy{ opacity:0; transition: opacity .5s ease; background:var(--rule-line); }
img.lazy.loaded{ opacity:1; }

/* ---------------------------------------------------------------------
   Pagination
--------------------------------------------------------------------- */
.pagination .page-link{
  font-family: var(--font-ui); border:none; background:transparent; color:var(--ink-soft);
  border-radius:50px !important; margin:0 .15rem;
}
.pagination .page-item.active .page-link{ background: var(--accent); color:#fff; }

/* ---------------------------------------------------------------------
   Reduced motion respect
--------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* ---------------------------------------------------------------------
   Responsive tweaks
--------------------------------------------------------------------- */
@media (max-width: 576px){
  .post-body{ font-size: 1.03rem; }
  .diary-card h3{ font-size: 1.32rem; }
  .brand{ font-size: 1.55rem; }
}