/* ==========================================
   IIIT Article – Single Article Layout (Premium)
   FULL CSS (with sticky title aligned to main H1 column)
========================================== */

/* JS can overwrite this (measures your fixed site header) */
:root {
  --iiit-header-offset: 110px;
}
@media (max-width: 768px) {
  :root {
    --iiit-header-offset: 130px;
  }
}

body.single-article {
  --rail-w: 320px;
  --gap: 44px;
  --gap-row: 22px;

  --line: rgba(15, 23, 42, 0.14);
  --line-soft: rgba(15, 23, 42, 0.12);

  --ink: #111827;
  --muted: rgba(15, 23, 42, 0.7);

  --accent: rgba(2, 132, 199, 0.55);
  --underline-w: 54px;
  --underline-h: 3px;

  --topbar-h: 44px;
  --topbar-pad-y: 10px;

  background: #fff;
}

/* Sticky safety (avoid overflow breaking sticky) */
.single-article .iiit-article-wrap,
.single-article .iiit-article-grid {
  overflow: visible !important;
}

/* Push page content below your fixed header */
.single-article .iiit-article-wrap {
  padding-top: var(--iiit-header-offset);
}

/* 2-col grid */
.single-article .iiit-article-grid {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  column-gap: var(--gap);
  row-gap: var(--gap-row);
  align-items: start;
  margin-top: 0;
}

/* ==========================
   TOPBAR (3 columns)
   rail | main-title | right-menu
   - transparent on load
   - full-width white only when sticky
========================== */
.single-article .iiit-article-topbar {
  grid-column: 1 / -1;
  position: sticky;
  top: var(--iiit-header-offset);
  z-index: 60;

  background: transparent;
  box-shadow: none;

  border-bottom: 1px solid var(--line-soft);

  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr) auto; /* ✅ aligns sticky title with H1 column */
  column-gap: var(--gap);
  align-items: center;

  padding: var(--topbar-pad-y) 0;
  margin-bottom: 10px;

  transition: box-shadow 0.28s ease, border-color 0.28s ease;
}

/* Full-width background ONLY when stuck */
.single-article .iiit-article-topbar.is-stuck {
  border-bottom-color: transparent;
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.05);
}

/* full-width white bg */
.single-article .iiit-article-topbar.is-stuck::before {
  content: "";
  position: absolute;
  inset: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  background: #fff;
  z-index: -1;
}

/* full-width bottom border */
.single-article .iiit-article-topbar.is-stuck::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 100vw;
  height: 1px;
  background: var(--line-soft);
  z-index: -1;
}

/* Left: Previous | Next */
.single-article .iiit-article-topbar__left {
  padding-right: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Center: Sticky Title (aligned with main content start) */
.single-article .iiit-article-topbar__center {
  min-width: 0;
  display: flex;
  align-items: center;
}

/* Right: Essays/About/Submissions */
.single-article .iiit-article-topbar__right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-height: var(--topbar-h);
  white-space: nowrap;
}

/* Link styles */
.single-article .iiit-toplink,
.single-article .iiit-topmuted {
  font-size: 16px;
  color: rgba(15, 23, 42, 0.78);
  text-decoration: none;
}
.single-article .iiit-toplink:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.single-article .iiit-topsep {
  opacity: 0.55;
}

/* Sticky title (hidden until stuck) */
.single-article .iiit-sticky-title {
  font-weight: 600;
  font-size: 15px;
  color: rgba(15, 23, 42, 0.88);
  letter-spacing: -0.005em;

  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;

  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.single-article .iiit-article-topbar.is-stuck .iiit-sticky-title {
  opacity: 1;
  transform: translateY(0);
}

/* Create a little breathing space below when sticky */
.single-article .iiit-article-topbar.is-stuck {
  margin-bottom: 14px;
  padding-bottom: calc(var(--topbar-pad-y) + 2px);
}

/* ==========================
   LEFT RAIL
========================== */
.single-article .iiit-rail {
  position: sticky;
  top: calc(
    var(--iiit-header-offset) + var(--topbar-h) + (var(--topbar-pad-y) * 2)
  );
  padding-right: 18px;
  border-right: 1px solid var(--line);

  max-height: calc(
    100vh -
      (var(--iiit-header-offset) + var(--topbar-h) + (var(--topbar-pad-y) * 2))
  );
  overflow-y: auto;
  overflow-x: hidden;

  scrollbar-width: none;
  -ms-overflow-style: none;

  padding-top: 10px; /* small space above AUTHOR */
}
.single-article .iiit-rail::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.single-article .iiit-rail__block {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.single-article .iiit-rail__block:first-child {
  border-top: 0;
  padding-top: 0;
}

/* Label underline style */
.single-article .iiit-rail__label {
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);

  position: relative;
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 15px;
}
.single-article .iiit-rail__label::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: var(--underline-w);
  height: var(--underline-h);
  background: var(--accent);
}

.single-article .iiit-rail__value {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
}

.single-article .iiit-rail__chapters {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.single-article .chapters-link {
  display: block;
  text-decoration: none;
  color: rgba(17, 24, 39, 0.86);
  font-size: 15px;
  line-height: 1.55;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}
.single-article .chapters-link:hover {
  color: #0f172a;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  text-decoration-color: rgba(15, 23, 42, 0.25);
}
.single-article .chapters-link.is-active {
  font-weight: 700;
  color: #0f172a;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  text-decoration-color: rgba(15, 23, 42, 0.35);
}
.single-article .chapters-link.is-sub {
  padding-left: 14px;
  font-size: 13px;
  opacity: 0.92;
}

/* ==========================
   RIGHT CONTENT
========================== */
.single-article .iiit-main {
  color: rgba(17, 24, 39, 0.9);
  font-size: 18px;
  line-height: 1.75;
}

.single-article .iiit-article-title {
  font-weight: 700;
  font-size: clamp(30px, 3.2vw, 36px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 6px 0 40px;
  color: var(--ink);
}

/* Featured image */
.single-article .iiit-featured {
  margin: 0 0 18px;
}
.single-article .iiit-featured img {
  width: 100%;
  height: auto;
  display: block;

  /* Thin frame for all images (client request) */
  border: 1px solid rgba(15, 23, 42, 0.14);
  border-radius: 0;
  background: #fff;
  box-sizing: border-box;
}

/* Content spacing */
.single-article .iiit-article-content p {
  margin: 0 0 16px;
  font-size: 18px;
  color: #333;
}

.single-article .iiit-article-content h2 {
  font-size: 24px;
  line-height: 1.35;
  font-weight: 700;
  margin: 26px 0 20px;
}
.single-article .iiit-article-content h3 {
  font-size: 18px;
  line-height: 1.35;
  font-weight: 700;
  margin: 22px 0 10px;
}

.single-article .iiit-article-content hr {
  margin-top: 40px;
  margin-bottom: 40px;
  border: 1px solid rgba(15, 23, 42, 0.14);
}

/* Anchor offset under fixed header + sticky topbar */
.single-article .iiit-article-content h2,
.single-article .iiit-article-content h3,
.single-article .iiit-article--auto h2,
.single-article .iiit-article--auto h3 {
  scroll-margin-top: calc(
    var(--iiit-header-offset) + var(--topbar-h) + (var(--topbar-pad-y) * 2) +
      10px
  );
}

/* Reusable underline utility */
.single-article .iiit-underline {
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
  margin-bottom: 20px;
  font-size: 20px;
}
.single-article .iiit-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: var(--underline-w);
  height: var(--underline-h);
  background: var(--accent);
}

/* ==========================
   Similar Essays (Premium)
========================== */
.single-article .iiit-similar {
  margin: 46px 0 54px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.single-article .iiit-similar__inner {
  position: relative;
}

.single-article .iiit-similar__title {
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 18px;
  position: relative;
  display: inline-block;
  color: var(--ink);
}
.single-article .iiit-similar__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: var(--underline-w);
  height: var(--underline-h);
  background: var(--accent);
}

/* Grid + dividers */
.single-article .iiit-similar__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  align-items: start;
}
.single-article .iiit-similar__card {
  padding: 10px 26px 0;
  text-align: center;
}
.single-article .iiit-similar__card + .iiit-similar__card {
  border-left: 1px solid rgba(15, 23, 42, 0.16);
}

/* Media */

.single-article .iiit-similar__media{
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;      /* 👈 choose your ratio */
  overflow: hidden;
  background: #f3f4f6;       /* fallback background */
}

.single-article .iiit-similar__img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover; 
  border: 1px solid rgba(15, 23, 42, 0.14);
  box-sizing: border-box;
}

.single-article .iiit-similar__ph {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: rgba(15, 23, 42, 0.06);
  border-radius: 10px;
}

/* Title */
.single-article .iiit-similar__cardtitle {
  margin: 12px 0 4px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
}
.single-article .iiit-similar__cardtitle a {
  color: #0f172a;
  text-decoration: none;
}
.single-article .iiit-similar__cardtitle a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Meta */
.single-article .iiit-similar__meta {
  font-size: 12px;
  opacity: 0.7;
}

/* ==========================
   MOBILE (layout + topbar)
   - title left, menu right
========================== */
@media (max-width: 992px) {
  body.single-article {
    --gap: 18px;
    --gap-row: 14px;
    --topbar-pad-y: 8px;
  }

  /* Grid becomes 1 column */
  .single-article .iiit-article-grid {
    grid-template-columns: 1fr;
    column-gap: 0;
    row-gap: 16px;
  }

  /* Topbar: row1 prev/next, row2 title(left) + menu(right) */
  .single-article .iiit-article-topbar {
    grid-template-columns: 1fr auto;
    column-gap: 12px;
    row-gap: 8px;
    padding: var(--topbar-pad-y) 0;
    margin-bottom: 12px;
  }

  .single-article .iiit-article-topbar__left {
    grid-column: 1 / -1; /* full width */
    padding-right: 0;
    flex-wrap: wrap;
    gap: 8px;
  }

  .single-article .iiit-article-topbar__center {
    grid-column: 1 / 2; /* title left */
  }

  .single-article .iiit-article-topbar__right {
    grid-column: 2 / 3; /* menu right */
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 0;
    white-space: normal;
  }

  /* Show title on sticky */
  .single-article .iiit-article-topbar.is-stuck .iiit-sticky-title {
    opacity: 1;
    transform: translateY(0);
  }

  .single-article .iiit-sticky-title {
    max-width: 58vw;
    font-size: 14px;
    line-height: 1.25;
  }

  .single-article .iiit-toplink,
  .single-article .iiit-topmuted {
    font-size: 14px;
  }

  /* Rail becomes normal block */
  .single-article .iiit-rail {
    position: static;
    top: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 0 0 14px;
    margin-bottom: 6px;
    max-height: none;
    overflow: visible;
  }

  .single-article .iiit-rail__block {
    padding: 16px 0;
  }
  .single-article .iiit-rail__chapters {
    gap: 12px;
  }

  /* Typography */
  .single-article .iiit-main {
    font-size: 16px;
    line-height: 1.75;
  }
  .single-article .iiit-article-title {
    font-size: clamp(24px, 6vw, 32px);
    margin: 4px 0 22px;
  }
  .single-article .iiit-article-content p {
    font-size: 16px;
  }
  .single-article .iiit-article-content h2 {
    font-size: 20px;
    margin: 22px 0 14px;
  }

  /* Anchor offset: topbar can be taller on mobile */
  .single-article .iiit-article-content h2,
  .single-article .iiit-article-content h3,
  .single-article .iiit-article--auto h2,
  .single-article .iiit-article--auto h3 {
    scroll-margin-top: calc(var(--iiit-header-offset) + 120px);
  }

  /* Similar essays -> stacked */
  .single-article .iiit-similar {
    margin: 34px 0 40px;
    padding: 30px 0;
  }
  .single-article .iiit-similar__grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .single-article .iiit-similar__card {
    padding: 0;
    text-align: left;
  }
  .single-article .iiit-similar__card + .iiit-similar__card {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 18px;
  }
}

/* Optional: very small phones */
@media (max-width: 480px) {
  .single-article .iiit-toplink,
  .single-article .iiit-topmuted {
    font-size: 13px;
  }
  .single-article .iiit-sticky-title {
    font-size: 13px;
    max-width: 54vw;
  }
}