/* aihub-security-coded.css — page-scoped styles for the AI Hub Enterprise Security case study.
   Base system (colors, typography, .sec/.wrap/.ph and all shared components) lives in case-study.css. */
@import url("case-study.css");

html { scroll-behavior: smooth; }

.cover-laptop-img {
  display: block;
  width: 100%;
  max-width: 1050px;
  margin: 0 auto;
  border-radius: var(--radius);
}

/* ---------- Side nav ---------- */
.aih-side-nav {
  position: fixed;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  max-height: 88vh;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 4px;
  mix-blend-mode: difference;
}
.aih-side-nav::-webkit-scrollbar { display: none; }
.aih-side-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.2s ease;
}
.aih-side-nav-link:hover {
  background: rgba(200, 200, 200, 0.06);
}
.aih-side-nav-bar {
  width: 2px;
  height: 12px;
  background: #D1D5DB;
  border-radius: 1px;
  transition: all 0.2s ease;
  flex-shrink: 0;
  opacity: 0.6;
}
.aih-side-nav-link:hover .aih-side-nav-bar,
.aih-side-nav-link.active .aih-side-nav-bar {
  opacity: 1;
}
.aih-side-nav-link.active .aih-side-nav-bar {
  width: 4px;
  height: 18px;
  background: #E5E7EB;
  border-radius: 99px;
}
.aih-side-nav-label {
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  transform: translateX(-6px);
  transition: opacity .15s, max-width .15s, transform .15s;
  font-size: 13px;
  color: #D1D5DB;
}
.aih-side-nav-link.active .aih-side-nav-label {
  color: #F3F4F6;
  font-weight: 600;
}
.aih-side-nav:hover .aih-side-nav-label {
  opacity: 1;
  max-width: 220px;
  transform: translateX(0);
}

/* ---------- Placeholder-value chip (swap before publishing) ---------- */
.todo { display: inline; color: var(--green); }
.sec.dark .todo { color: var(--green); }
.todo-note { font-size: 13px; color: var(--ink-2); margin-top: 14px; font-style: italic; }
.sec.dark .todo-note { color: var(--dark-text-dim); }

/* ---------- Product brief: two column, problem statement on the right ---------- */
#product-brief .brief-row { grid-template-columns: 1.15fr 1fr; display: grid; align-items: start; text-align: left; gap: 60px; }
#product-brief .brief-text { max-width: none; margin: 0; order: 2; }
#product-brief .brief-problem { order: 1; }
#product-brief .brief-text .sec-h2 { text-align: left; }
#product-brief .tech-groups { justify-content: flex-start; }
#product-brief .brief-text p,
#product-brief .brief-problem li { text-align: justify; text-justify: inter-word; }

.brief-problem { margin-top: 0; padding-top: 2px; }
.brief-problem .bp-label {
  display: inline-block; font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 12.5px;
  letter-spacing: 1.6px; text-transform: uppercase; color: var(--dark-text-dim); margin-bottom: 16px;
}
.brief-problem h3 { font-size: 20px; font-weight: 600; color: #fff; margin-bottom: 16px; line-height: 1.35; }
.brief-problem ul { list-style: none; display: grid; gap: 14px; }
.brief-problem li { padding-left: 20px; position: relative; font-size: 16px; color: var(--dark-text-dim); line-height: 1.5; }
.brief-problem li::before { content: "—"; position: absolute; left: 0; color: #6d6f76; }

@media (max-width: 900px) {
  #product-brief .brief-row { grid-template-columns: 1fr; }
}

/* ---------- NDA disclaimer banner ---------- */
.nda-note {
  display: flex; align-items: center; justify-content: center; gap: 9px; margin: 0 auto 40px;
  background: #2a2a2a; border: 1px solid var(--dark-border); border-radius: 14px;
  padding: 11px 22px; font-size: 13.5px; line-height: 1.5; color: var(--dark-text-dim);
  max-width: 980px; width: 100%; box-sizing: border-box; text-align: center;
}
.nda-note strong { color: #fff; font-weight: 600; white-space: nowrap; }

/* ---------- Section lead paragraph ---------- */
.lead { font-size: 19px; color: var(--ink-2); max-width: 900px; margin: -6px 0 30px; }
.sec.dark .lead { color: var(--dark-text-dim); }

/* ---------- Chip row (tags / protocols / IdPs) ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; }
.chip { background: var(--greyblue); border: 1px solid var(--light-border); border-radius: 999px; padding: 7px 15px; font-size: 14px; color: var(--ink-2); white-space: nowrap; }
.sec.dark .chip { background: var(--dark-card-2); border-color: var(--dark-border); color: var(--dark-text-dim); }

/* ---------- Tech groups: IdP logo chip + protocol chips ---------- */
.tech-groups { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; }
.tech-group-row { display: contents; }

/* Full-width break is a flex item, so gap applies twice between rows — pull one back. */
.tech-break { flex-basis: 100%; width: 0; height: 0; margin: 0; margin-top: -12px; }
.chip.idp-chip { display: inline-flex; align-items: center; gap: 12px; padding: 9px 18px 9px 16px; width: fit-content; }

.flow-step { position: relative; }
.flow-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -21px;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--ink-2);
  opacity: 0.45;
  z-index: 1;
}
@media (max-width: 900px) {
  .flow-step:not(:last-child)::after { display: none; }
}
.idp-chip-label { white-space: nowrap; }
.idp-icons.inline { display: flex; gap: 8px; }
.idp-icon {
  position: relative; width: 27px; height: 27px; border-radius: 7px;
  background: #fff; display: flex; align-items: center; justify-content: center;
  padding: 4px; cursor: default; transition: transform .15s; flex: none;
}
.idp-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }
.idp-icon:hover { transform: translateY(-3px); }
.idp-icon::after {
  content: attr(data-name); position: absolute; bottom: calc(100% + 9px); left: 50%;
  transform: translateX(-50%) translateY(4px); white-space: nowrap;
  background: #101010; color: #fff; font-size: 12px; font-weight: 500;
  padding: 5px 10px; border-radius: 6px; border: 1px solid var(--dark-border);
  opacity: 0; pointer-events: none; transition: opacity .15s, transform .15s; z-index: 5;
}
.idp-icon:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- User cards ---------- */
.users-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.user-card {
  position: relative; background: #fff; border: 1px solid var(--light-border);
  border-radius: var(--radius); padding: 24px 26px 26px; transition: transform .15s, box-shadow .15s;
}
.user-card:hover { transform: translateY(-3px); box-shadow: 0 10px 22px -12px rgba(20,24,40,.32); }
.user-card.primary {
  background: #f6fbff; border: 1.5px solid var(--blue);
  box-shadow: 0 1px 3px rgba(74,151,238,.16);
}
.u-badge {
  display: inline-block; background: var(--blue); color: #fff; font-size: 10.5px; font-weight: 700;
  letter-spacing: 1.2px; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; margin-bottom: 14px;
}
.u-badge.muted { background: #eceff3; color: #7b838e; }
.u-head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.u-emoji { font-size: 26px; line-height: 1; }
.u-name { font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 21px; color: var(--ink); }
.u-role { font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.user-card ul { list-style: none; display: grid; gap: 9px; font-size: 14.5px; color: var(--ink-2); }
.user-card ul li { padding-left: 18px; position: relative; }
.user-card ul li::before { content: "→"; position: absolute; left: 0; color: #a9b1bc; }
.user-card.primary ul li::before { color: var(--blue); }
.users-note { margin-top: 22px; font-size: 15px; color: var(--ink-2); }
.users-note strong { color: var(--ink); }

/* ---------- Ecosystem map ---------- */
.eco-wrap { margin-top: 30px; background: #fff; border: 1px solid var(--light-border); border-radius: var(--radius); padding: 26px 26px 30px; }
.eco-scroll { overflow-x: auto; overflow-y: visible; }
.eco-svg-wrap { position: relative; min-width: 860px; }
.eco-svg { display: block; width: 100%; height: auto; }
.eco-hint { text-align: center; font-size: 12.5px; color: var(--ink-2); margin-top: 14px; }

/* Hover hotspots over the numbered badges — tooltip replaces the old list */
.eco-hotspots { position: absolute; inset: 0; pointer-events: none; }
.eco-hot { position: absolute; width: 27px; height: 27px; transform: translate(-50%, -50%); pointer-events: auto; cursor: help; }
.eco-tip {
  position: absolute; bottom: calc(100% + 9px); left: 50%; transform: translateX(-50%) translateY(5px);
  width: 235px; background: #17181c; color: #fff; padding: 13px 15px; border-radius: 10px;
  box-shadow: 0 14px 28px -10px rgba(20,24,40,.4);
  opacity: 0; visibility: hidden; pointer-events: none; z-index: 30;
  transition: opacity .15s ease, transform .15s ease; font-size: 13px; line-height: 1.5;
}
.eco-tip::after {
  content: ""; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 6px solid transparent; border-top-color: #17181c;
}
.eco-tip strong { display: block; font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 14.5px; margin-bottom: 5px; color: #fff; }
.eco-tip span { color: #c7cbd3; }
.eco-hot:hover .eco-tip, .eco-hot:focus-visible .eco-tip {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
/* edge alignment so tooltips don't clip against the scroll container */
.eco-hot.align-r .eco-tip { left: 0; transform: translateX(0) translateY(5px); }
.eco-hot.align-r .eco-tip::after { left: 20px; transform: none; }
.eco-hot.align-r:hover .eco-tip, .eco-hot.align-r:focus-visible .eco-tip { transform: translateX(0) translateY(0); }
.eco-hot.align-l .eco-tip { left: auto; right: 0; transform: translateX(0) translateY(5px); }
.eco-hot.align-l .eco-tip::after { left: auto; right: 20px; transform: none; }
.eco-hot.align-l:hover .eco-tip, .eco-hot.align-l:focus-visible .eco-tip { transform: translateX(0) translateY(0); }

.eco-key { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.eco-key > div { background: var(--light-card); border: 1px solid var(--light-border); border-radius: 12px; padding: 20px 22px; }
.eco-key h4 { font-family: "Rajdhani", sans-serif; font-size: 19px; margin-bottom: 8px; }
.eco-key p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- Business impact: 2x2 grid ---------- */
.impact-grid.grid-2x2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 26px; }
.impact-grid.grid-2x2 .stat-card.lg { margin: 0; }

/* ---------- Benchmark table: before/after tinting ---------- */
.benchmark-table td:nth-child(3) { background: #fdecea; }
.benchmark-table td:nth-child(4) { background: #e8f6ec; }
.benchmark-table thead th:nth-child(3) { background: #fbe0dd; }
.benchmark-table thead th:nth-child(4) { background: #dcf1e2; }

/* ---------- Track cards (three workstreams) ---------- */
.track-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 26px; }
.track-card { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 26px 28px; }
.track-card .track-no { font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 15px; letter-spacing: 2px; color: var(--blue); }
.track-card h3 { font-size: 22px; margin: 8px 0 10px; }
.track-card p { font-size: 15px; color: var(--ink-2); }
.track-card ul { padding-left: 18px; margin-top: 12px; display: grid; gap: 7px; font-size: 14.5px; color: var(--ink-2); }

/* ---------- Decision cards (problem → options → decision → why) ---------- */
.dec-grid { display: grid; gap: 22px; margin-top: 26px; }
.dec-card { background: #fff; border: 1px solid var(--light-border); border-radius: var(--radius); padding: 26px 30px; }
.sec.dark .dec-card { background: var(--dark-card); border-color: var(--dark-border); }
.dec-card h4 { font-family: "Rajdhani", sans-serif; font-size: 22px; margin-bottom: 14px; }
.sec.dark .dec-card h4 { color: #fff; }
.dec-row { display: grid; grid-template-columns: 130px 1fr; gap: 14px; padding: 9px 0; border-top: 1px solid var(--light-border); font-size: 15px; }
.sec.dark .dec-row { border-top-color: var(--dark-border); }
.dec-row:first-of-type { border-top: none; }
.dec-key { font-weight: 700; color: var(--ink); }
.sec.dark .dec-key { color: #fff; }
.dec-val { color: var(--ink-2); }
.sec.dark .dec-val { color: var(--dark-text-dim); }

/* ---------- Collapsible "view more" decisions ---------- */
.dec-card.hidden-extra { display: none; }
.dec-grid.expanded .dec-card.hidden-extra { display: block; }
.dec-toggle-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; background: none; border: none;
  padding: 14px 20px; margin-top: 4px;
  font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 15px; letter-spacing: .5px;
  color: var(--blue); cursor: pointer;
}
.dec-toggle-btn:hover { text-decoration: underline; }
.dec-toggle-btn .dec-toggle-icon { transition: transform .2s ease; font-size: 12px; }
.dec-grid.expanded .dec-toggle-btn .dec-toggle-icon { transform: rotate(180deg); }

/* ---------- Before / after pairs ---------- */
.ba-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.ba-row-split { display: grid; grid-template-columns: 2fr 8fr; gap: 22px; margin-top: 14px; align-items: stretch; }
.ba-row-split .ph { margin: 0; height: 100%; }
.ba-card { border-radius: var(--radius); padding: 24px 26px; border: 1px solid var(--light-border); }
.ba-card.before { background: var(--pink); }
.ba-card.after { background: var(--mint); }
.ba-card h4 { font-family: "Rajdhani", sans-serif; font-size: 20px; margin-bottom: 12px; }
.ba-card ul { padding-left: 18px; display: grid; gap: 8px; font-size: 15px; color: var(--ink-2); }

/* ---------- Quote / verbatim ---------- */
.ia-stack { display: grid; gap: 26px; margin-top: 26px; }
.ia-diagram-img { width: 100%; border-radius: var(--radius); border: 1px solid var(--light-border); display: block; }

.quote-card { background: var(--greyblue); border-radius: 10px; padding: 18px 22px; margin: 18px 0; }
.quote-card p { font-size: 16px; font-style: italic; color: var(--ink); }
.quote-card span { display: block; margin-top: 8px; font-size: 13.5px; font-style: normal; color: var(--ink-2); }
.sec.dark .quote-card { background: var(--dark-card-2); }
.sec.dark .quote-card p { color: #fff; }
.sec.dark .quote-card span { color: var(--dark-text-dim); }

/* ---------- Primary research: verbatim quote grid ---------- */
.qt-theme { margin: 34px 0 4px; }
.qt-theme h3 { font-size: 22px; margin-bottom: 6px; }
.qt-theme p.qt-lead { font-size: 15.5px; color: var(--ink-2); max-width: 820px; }
.quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px 30px; margin-top: 30px; align-items: start; padding: 6px 4px; }

/* Sticky-note cards */
.qt-card {
  position: relative; border: none; border-radius: 3px;
  padding: 30px 26px 24px;
  background: #fdf3c8;
  box-shadow: 0 1px 1px rgba(20,24,40,.10), 0 10px 20px -8px rgba(20,24,40,.28);
  transition: transform .2s ease, box-shadow .2s ease;
}
/* torn-tape strip */
.qt-card::before {
  content: ""; position: absolute; top: -9px; left: 50%; transform: translateX(-50%) rotate(-1.5deg);
  width: 86px; height: 20px; background: rgba(255,255,255,.55);
  border-left: 1px dashed rgba(20,24,40,.10); border-right: 1px dashed rgba(20,24,40,.10);
  box-shadow: 0 1px 2px rgba(20,24,40,.10);
}
/* curled bottom-right corner */
.qt-card::after {
  content: ""; position: absolute; right: 0; bottom: 0; width: 26px; height: 26px;
  background: linear-gradient(135deg, transparent 50%, rgba(20,24,40,.09) 50%, rgba(20,24,40,.16) 100%);
}
/* paper colours + natural tilt, rotating every 4 notes */
.qt-card:nth-child(4n+1) { background: #fdf3c8; transform: rotate(-1.1deg); }
.qt-card:nth-child(4n+2) { background: #fde3dd; transform: rotate(.9deg); }
.qt-card:nth-child(4n+3) { background: #dff1e4; transform: rotate(.7deg); }
.qt-card:nth-child(4n+4) { background: #dceafa; transform: rotate(-.8deg); }
.qt-card:hover {
  transform: rotate(0deg) translateY(-5px);
  box-shadow: 0 2px 2px rgba(20,24,40,.10), 0 20px 34px -12px rgba(20,24,40,.36);
  z-index: 2;
}

/* Decision-card sticky-note quad */
.dec-quad { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 6px; }
.dec-quad.q1 { grid-template-columns: 1fr; }
.dec-quad.q2 { grid-template-columns: repeat(2, 1fr); }
.dec-quad.q3 { grid-template-columns: repeat(3, 1fr); }
.dec-quad.q5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 900px) { .dec-quad.q3, .dec-quad.q5 { grid-template-columns: 1fr 1fr; } }
.dec-note {
  position: relative; border-radius: 3px; padding: 22px 16px 16px;
  box-shadow: 0 1px 1px rgba(20,24,40,.10), 0 8px 16px -8px rgba(20,24,40,.30);
  font-size: 13.5px; line-height: 1.5; color: #1b1c20;
}
.dec-note::before {
  content: ""; position: absolute; top: -8px; left: 50%; transform: translateX(-50%) rotate(-1.5deg);
  width: 56px; height: 16px; background: rgba(255,255,255,.55);
  border-left: 1px dashed rgba(20,24,40,.10); border-right: 1px dashed rgba(20,24,40,.10);
  box-shadow: 0 1px 2px rgba(20,24,40,.10);
}
.dec-note::after {
  content: ""; position: absolute; right: 0; bottom: 0; width: 18px; height: 18px;
  background: linear-gradient(135deg, transparent 50%, rgba(20,24,40,.09) 50%, rgba(20,24,40,.16) 100%);
}
.dec-note-label { display: block; font-weight: 700; font-size: 13px; margin-bottom: 8px; }
.dec-note.problem { background: #fde3dd; transform: rotate(-1deg); }
.dec-note.options { background: #fdf3c8; transform: rotate(.8deg); }
.dec-note.decision { background: #dff1e4; transform: rotate(-.6deg); }
.dec-note.why { background: #ffe6c7; transform: rotate(1deg); }
.dec-note.tradeoff { background: #f7d6d6; transform: rotate(-.7deg); }
.dec-note.approach { background: #dceafa; transform: rotate(.6deg); }
.dec-note.outcome { background: #dff1e4; transform: rotate(-.9deg); }
.dec-note.happened { background: #fde3dd; transform: rotate(.5deg); }
.dec-plain-note { margin-top: 14px; font-size: 14.5px; color: var(--ink-2); }
.sec.dark .dec-plain-note { color: var(--dark-text-dim); }
.dec-note:hover { transform: rotate(0deg) translateY(-3px); z-index: 2; }
@media (max-width: 900px) { .dec-quad { grid-template-columns: 1fr 1fr; } }

.qt-card blockquote { font-size: 16.5px; line-height: 1.55; color: #1b1c20; font-style: italic; font-weight: 500; }
.qt-card blockquote code { font-style: normal; font-size: 14px; background: rgba(255,255,255,.6); padding: 1px 5px; border-radius: 4px; }
.qt-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; align-items: center; }
.qt-who { font-size: 13.5px; font-weight: 700; color: rgba(23,24,28,.72); }
.qt-tag { font-size: 11.5px; letter-spacing: .5px; text-transform: uppercase; font-weight: 700; border-radius: 5px; padding: 3px 8px; border: 1px solid rgba(20,24,40,.10); }
.qt-tag.open { background: #fff0ee; color: #a3281b; }
.qt-tag.workaround { background: #fffaea; color: #7a5c00; }
.qt-tag.resolved { background: #edfaf1; color: #10693a; }
.qt-tag.doc { background: #eef3ff; color: #2f479c; }
.qt-insight { margin-top: 16px; padding-top: 14px; border-top: 1px dashed rgba(20,24,40,.20); font-size: 14.5px; color: rgba(23,24,28,.78); }
.qt-insight strong { color: #1b1c20; }

/* ---------- Competitor takeaway cards ---------- */
.comp-takeaways { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; }
.comp-take { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 24px 26px; }
.comp-take h4 { font-family: "Rajdhani", sans-serif; font-size: 20px; margin-bottom: 10px; }
.comp-take p { font-size: 15px; color: var(--ink-2); }

/* ---------- Standards / frameworks — compact pill rows ---------- */
.ref-block { margin-top: 24px; border: 1px solid var(--light-border); border-radius: var(--radius); overflow: hidden; }
.ref-row { display: grid; grid-template-columns: 210px 1fr; gap: 22px; padding: 18px 24px; border-bottom: 1px solid var(--light-border); align-items: start; }
.ref-row:last-child { border-bottom: none; }
.ref-label { font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 17px; color: var(--ink); }
.ref-label span { display: block; font-family: "DM Sans", sans-serif; font-weight: 400; font-size: 13px; color: var(--ink-2); margin-top: 4px; line-height: 1.45; }
.ref-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.ref-pill {
  display: inline-block; background: var(--greyblue); border: 1px solid var(--light-border);
  border-radius: 999px; padding: 6px 14px; font-size: 13.5px; font-weight: 500;
  color: var(--ink-2); text-decoration: none; transition: background .15s, color .15s, border-color .15s;
}
a.ref-pill:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
a.ref-pill::after { content: " \2197"; font-size: 11px; opacity: .55; }
.ref-pill.plain { background: #fff; }

/* ---------- Paper checklists ---------- */
.paper-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px 40px; margin-top: 34px; padding: 8px; align-items: start; }
.paper {
  position: relative; background: #fff; border-radius: 4px;
  padding: 30px 26px 34px 62px;
  box-shadow: 0 1px 2px rgba(20,24,40,.10), 0 16px 30px -14px rgba(20,24,40,.34);
}
.paper:nth-child(odd) { transform: rotate(-.65deg); }
.paper:nth-child(even) { transform: rotate(.5deg); }
/* red margin rule */
.paper::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 46px;
  width: 1.5px; background: #f3a9a9;
}
.paper-title {
  font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 25px;
  line-height: 1.15; color: var(--ink); margin-bottom: 10px; position: relative;
}
/* hand-drawn underline */
.paper-title::after {
  content: ""; display: block; height: 2px; margin-top: 12px;
  background: #b9bec8; transform: rotate(-.5deg); transform-origin: left center;
  border-radius: 2px;
}
.paper-body {
  margin-top: 14px;
  background-image: repeating-linear-gradient(to bottom, transparent 0 33px, #e7eef7 33px 34px);
}
.chk-line {
  height: 34px; line-height: 34px; display: flex; align-items: center; gap: 12px;
  font-size: 15px; color: var(--ink); white-space: nowrap;
}
.cbx {
  flex: none; width: 15px; height: 15px; border: 1.6px solid #98a2ae;
  border-radius: 3px; background: #fff;
}
.chk-sub {
  height: 34px; line-height: 34px; font-family: "Rajdhani", sans-serif; font-weight: 700;
  font-size: 13px; letter-spacing: 1.6px; text-transform: uppercase; color: #93a0ad;
}
.chk-sub.gap-top { margin-top: 0; }

@media (max-width: 900px) {
  .quote-grid, .comp-takeaways, .paper-grid, .eco-key, .users-grid, .impact-grid.grid-2x2 { grid-template-columns: 1fr; }
  .eco-tip { width: 190px; font-size: 12.5px; }
  .ref-row { grid-template-columns: 1fr; gap: 12px; }
  .paper { padding-left: 52px; }
  .paper::before { left: 38px; }
  .chk-line { white-space: normal; }
}

/* ---------- AI-in-design cards ---------- */
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 26px; }
.ai-card { background: var(--dark-card); border: 1px solid var(--dark-border); border-radius: var(--radius); padding: 24px 26px; }
.ai-card h4 { font-family: "Rajdhani", sans-serif; font-size: 20px; color: #fff; margin-bottom: 10px; }
.ai-card p { font-size: 14.5px; color: var(--dark-text-dim); }
.ai-card .ai-tool { display: inline-block; margin-top: 12px; font-size: 12.5px; color: #9fc6f2; }

/* ---------- Phase / roadmap rows (legacy, unused after release-timeline) ---------- */
.phase-row { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 20px 0; border-top: 1px solid var(--light-border); align-items: start; }
.phase-row:first-of-type { border-top: none; }
.phase-tag { font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 18px; color: var(--blue); }
.phase-row h4 { font-size: 18px; margin-bottom: 6px; }
.phase-row p { font-size: 15px; color: var(--ink-2); }
.phase-row.done .phase-tag { color: var(--green); }

/* ---------- Release timeline — actual chronological order ---------- */
.release-timeline { position: relative; margin-top: 34px; padding-left: 36px; }
.release-timeline::before { content: ""; position: absolute; left: 8px; top: 4px; bottom: 4px; width: 2px; background: var(--dark-border); }
.rel-item { position: relative; padding-bottom: 32px; }
.rel-item:last-child { padding-bottom: 0; }
.rel-dot {
  position: absolute; left: -36px; top: 3px; width: 18px; height: 18px; border-radius: 50%;
  border: 3px solid var(--dark-bg); box-shadow: 0 0 0 1.5px currentColor;
}
.rel-dot.shipped { background: var(--green); color: var(--green); }
.rel-dot.roadmap { background: #5b6472; color: #5b6472; }
.rel-dot.gap { background: #b07d00; color: #b07d00; }
.rel-dot.next { background: var(--blue); color: var(--blue); }
.rel-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 5px; }
.rel-tag {
  font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 13px; letter-spacing: 1px;
  text-transform: uppercase; padding: 2px 9px; border-radius: 5px;
}
.rel-tag.shipped { color: #7be2a3; background: rgba(123,226,163,.12); }
.rel-tag.roadmap { color: #b7bec8; background: rgba(183,190,200,.12); }
.rel-tag.gap { color: #f0c869; background: rgba(240,200,105,.12); }
.rel-tag.next { color: #9fc6f2; background: rgba(159,198,242,.14); }
.rel-item h4 { font-size: 18.5px; color: #fff; margin: 0; }
.rel-item p { font-size: 15px; color: var(--dark-text-dim); margin-top: 6px; }

/* ---------- Small stat strip ---------- */
.mini-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 26px; }
.mini-stat { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 22px 24px; }
.mini-stat .ms-val { font-family: "Rajdhani", sans-serif; font-weight: 700; font-size: 34px; color: var(--ink); line-height: 1.1; }
.mini-stat .ms-label { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
.sec.dark .mini-stat { background: var(--dark-card); border-color: var(--dark-border); }
.sec.dark .mini-stat .ms-val { color: #fff; }
.sec.dark .mini-stat .ms-label { color: var(--dark-text-dim); }

/* ---------- Flag card (feedback → change) ---------- */
.flag-card { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 26px 30px; margin-top: 22px; }
.flag-card h4 { font-family: "Rajdhani", sans-serif; font-size: 19px; margin-bottom: 8px; }
.flag-card p { font-size: 15px; color: var(--ink-2); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .aih-side-nav { display: none; }
  .track-grid, .ai-grid, .ba-row, .ba-row-split, .mini-stats { grid-template-columns: 1fr; }
  .dec-row { grid-template-columns: 1fr; gap: 4px; }
  .phase-row { grid-template-columns: 1fr; gap: 6px; }
}