/* =========================================================
   Magazine Reader — scroll mode for series pages
   Cards are injected as <article> sections.
   Overrides 1080×1080 lockdown from ../style.css.
   ========================================================= */

/* Motion tokens reused throughout this sheet */
:root {
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo:  cubic-bezier(0.16, 1, 0.3, 1);
  --dur-short: 0.24s;
  --dur-med:   0.5s;
  --dur-long:  0.8s;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Ensure body scrolls naturally on mobile.
   site.css sets body.reader padding-bottom for the flipbook reader-bar; we
   don't use it here. Make sure nothing pins the viewport. */
body { overflow-x: hidden; overflow-y: auto; }

/* Natural scroll — no snap (it broke sticky sidebar layout).
   Keyboard and TOC clicks still jump to card boundaries smoothly. */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 68px;
}

/* Page shell layout — sidebar + main column */
.mag-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 40px 48px 120px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: start;
}

/* --- Sticky sidebar TOC --- */
.mag-side {
  position: sticky;
  top: 88px; /* below site-nav */
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 8px;
  font-family: var(--f-sans, 'Pretendard Variable', sans-serif);
  animation: mag-fade-up 0.8s var(--ease-out-expo) both;
}
/* Staggered entrance for the sidebar headings — subtle, one-pass */
.mag-side .side-kicker   { animation: mag-fade-up 0.7s var(--ease-out-expo) 0.05s both; }
.mag-side h2             { animation: mag-fade-up 0.7s var(--ease-out-expo) 0.12s both; }
.mag-side .side-sub      { animation: mag-fade-up 0.7s var(--ease-out-expo) 0.20s both; }
.mag-side .progress-outer{ animation: mag-fade-up 0.7s var(--ease-out-expo) 0.26s both; }
.mag-side nav            { animation: mag-fade-up 0.7s var(--ease-out-expo) 0.32s both; }
.mag-side .side-foot     { animation: mag-fade-up 0.7s var(--ease-out-expo) 0.40s both; }

@keyframes mag-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes mag-article-in {
  from { opacity: 0; transform: translateY(20px); filter: blur(2px); }
  to   { opacity: 1; transform: translateY(0);    filter: blur(0); }
}
.mag-side .side-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.28em;
  color: var(--brand); font-weight: 700; text-transform: uppercase;
  margin-bottom: 14px;
}
.mag-side h2 {
  font-size: 28px; font-weight: 900;
  letter-spacing: -0.025em; color: var(--navy);
  line-height: 1.15; margin-bottom: 6px;
}
.mag-side h2 em { font-family: 'Playfair Display', serif; font-style: italic; color: var(--brand); font-weight: 700; }
.mag-side .side-sub {
  font-size: 13.5px; color: var(--ink-mid);
  line-height: 1.55; margin-bottom: 20px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.mag-side nav {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.mag-side nav ol {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.mag-side nav a {
  position: relative;
  display: flex; gap: 12px; align-items: baseline;
  padding: 8px 10px;
  font-size: 13.5px; line-height: 1.4;
  color: var(--ink-mid);
  isolation: isolate;
  transition:
    color var(--dur-short) var(--ease-out-quart),
    padding-left var(--dur-med) var(--ease-out-quart);
}
/* Left accent bar — grows from 0 width smoothly */
.mag-side nav a::before {
  content: "";
  position: absolute;
  left: 0; top: 10%; bottom: 10%;
  width: 2px;
  background: var(--brand);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur-med) var(--ease-out-expo);
}
/* Hover tint as a pseudo-element so we can animate width */
.mag-side nav a::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(227,82,5,0.08), rgba(227,82,5,0));
  opacity: 0;
  transition: opacity var(--dur-short) var(--ease-out-quart);
  z-index: -1;
}
.mag-side nav a:hover { color: var(--navy); }
.mag-side nav a:hover::after { opacity: 1; }
.mag-side nav a:hover::before { transform: scaleY(0.4); background: rgba(227,82,5,0.35); }
.mag-side nav a.current {
  color: var(--navy); font-weight: 700;
  padding-left: 14px;
}
.mag-side nav a.current::before { transform: scaleY(1); }
.mag-side nav a.current::after {
  opacity: 1;
  background: linear-gradient(90deg, rgba(227,82,5,0.10), rgba(227,82,5,0));
}
.mag-side nav a .num {
  flex: 0 0 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; color: var(--brand);
  letter-spacing: 0.1em; font-weight: 700;
  padding-top: 2px;
  transition: color var(--dur-short) ease;
}
.mag-side nav a.current .num { color: var(--brand-deep, #B5400B); }

.mag-side .progress-outer {
  margin-top: 16px; height: 3px;
  background: rgba(15,30,56,0.08);
  overflow: hidden;
  position: relative;
}
.mag-side .progress-inner {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--brand) 0%, #F07A3A 60%, var(--brand) 100%);
  background-size: 200% 100%;
  background-position: 0% 0%;
  transition:
    width 0.35s var(--ease-out-quart),
    background-position 2.4s linear;
}
.mag-side .progress-inner.is-moving {
  background-position: -200% 0%;
}
.mag-side .side-foot {
  margin-top: 18px; padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.2em; color: var(--ink-mid);
  text-transform: uppercase; font-weight: 700;
}

/* --- Main magazine column --- */
.mag-main {
  min-width: 0; /* prevent grid overflow */
}

/* --- Article (one card, un-caged) --- */
/* No page frame — treat as a section of a flowing magazine article.
   Background/border/shadow removed so boundaries don't cut the reading flow. */
.mag-article {
  position: relative;
  background: transparent;
  border: none;
  box-shadow: none;
  margin-bottom: 72px;
  padding: 0;
  /* Entrance state — starts muted, reveals when scrolled into view via
     IntersectionObserver (adds .in-view). First article bypasses. */
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease-out-expo),
    transform 0.8s var(--ease-out-expo);
  /* overflow: visible — critical so mobile touch scroll chains up to body.
     The ghost-num / topbar / hanzi-bg inside are already display:none below. */
}
.mag-article.in-view,
.mag-article:first-of-type {
  opacity: 1;
  transform: translateY(0);
}
.mag-article:first-of-type { transition: none; }

/* Images inside articles: gentle scale-in after mount (prevents harsh pop) */
.mag-article .stage img {
  animation: mag-img-in 0.9s var(--ease-out-expo) both;
}
@keyframes mag-img-in {
  from { opacity: 0; transform: scale(1.03); filter: blur(6px); }
  to   { opacity: 1; transform: scale(1);    filter: blur(0); }
}
/* Page header removed — it was interrupting the reading flow like a card break. */
.mag-article .mag-num { display: none !important; }

/* Cover header refinement — the only .header we let through. Card CSS
   styles it as a two-column row that wraps awkwardly in the narrow
   magazine column. Reset to a clean single-column masthead. */
.mag-article.cover-like .header {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-start !important;
  gap: 8px !important;
  border-bottom: 1px solid var(--line, rgba(15,30,56,0.1)) !important;
  margin-bottom: 24px !important;
  padding-bottom: 14px !important;
}
.mag-article.cover-like .brandmark {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 11px !important;
  letter-spacing: 0.28em !important;
  color: var(--brand, #E35205) !important;
  text-transform: uppercase !important;
  font-weight: 700 !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px !important;
}
.mag-article.cover-like .brandmark .tri {
  width: 0; height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 10px solid var(--brand, #E35205);
}
.mag-article.cover-like .chaptertag {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 10.5px !important;
  letter-spacing: 0.24em !important;
  color: var(--ink-mid, #5c6578) !important;
  text-transform: uppercase !important;
  font-weight: 600 !important;
  white-space: normal !important;
  line-height: 1.5 !important;
}
.mag-article.cover-like .chaptertag b {
  color: var(--brand, #E35205) !important;
  font-weight: 700 !important;
}

/* --- Unlock the card from its 1080×1080 cage --- */
/* The card's body becomes our article inner — allow fluid width */
.mag-article .stage {
  /* reset fixed geometry */
  padding: 0 !important;
  height: auto !important;
  min-height: 0 !important;
  display: block !important;
  overflow: visible !important;
}
/* Hide pure decoration that only makes sense at 1080×1080 */
.mag-article .topbar,
.mag-article .ghost-num,
.mag-article .hanzi-bg,
.mag-article .corner-tri,
.mag-article .corner-tri-sm,
.mag-article .foot { display: none !important; }
/* Hide per-card headers EXCEPT on the first (cover) article. The cover
   header acts as the magazine masthead — so give it extra breathing space
   from the sticky site-nav. */
.mag-article:not(.cover-like) .header { display: none !important; }
.mag-article.cover-like .header {
  margin-bottom: 20px !important;
  padding-bottom: 14px !important;
}
/* Kill paper-grain overlay that card CSS paints on article body */
.mag-article::after { display: none !important; }

/* Tone down cover/outro center-alignment */
.mag-article.cover-like .stage,
.mag-article.outro-like .stage {
  justify-content: flex-start !important;
  padding-top: 0 !important;
}

/* Big headlines feel oversized when content becomes wider — keep them strong but calmer */
.mag-article h1.hero {
  font-size: clamp(48px, 6vw, 88px) !important;
  line-height: 1.02 !important;
}
.mag-article h1.title {
  font-size: clamp(40px, 4.6vw, 70px) !important;
  line-height: 1.06 !important;
}
.mag-article h1.title.md { font-size: clamp(36px, 4.2vw, 62px) !important; }
.mag-article h1.title.sm { font-size: clamp(32px, 3.8vw, 52px) !important; }
.mag-article .ask {
  font-size: clamp(40px, 4.6vw, 68px) !important;
  line-height: 1.1 !important;
}
.mag-article .flourish {
  font-size: clamp(48px, 5.6vw, 78px) !important;
}
.mag-article .era .year {
  font-size: clamp(38px, 4vw, 54px) !important;
}
/* 긴 영문 기술 문자열용 (.year-long 클래스로 명시) */
.mag-article .era .year.year-long {
  font-size: clamp(18px, 2.2vw, 26px) !important;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

/* Portraits: the card CSS gives them aspect-ratio 4/5 — keep but cap width */
.mag-article .split {
  grid-template-columns: 1.3fr 1fr !important;
  gap: clamp(20px, 3vw, 36px) !important;
}
.mag-article .split .right .portrait {
  max-width: 320px;
}

/* Images inside articles — keep card rules but cap height on wide viewports */
.mag-article img {
  max-width: 100%;
  height: auto;
}
.mag-article img[style*="height:"] { /* keep inline heights as declared in cards */ }

/* Contain anything in the card that was positioned absolutely against the
   1080×1080 body (e.g. decorative overlays we haven't explicitly hidden).
   They should not push the article wider than the viewport. */
.mag-article { max-width: 100%; }
.mag-article * { max-width: 100%; }
/* Allow grid/flex children to shrink below content width (Korean long words) */
.mag-article .stage > *,
.mag-article .split > *,
.mag-article .row2 > *,
.mag-article .recap-grid > * { min-width: 0; }

/* Terminal block stretches nicely */
.mag-article .terminal { max-width: 100%; }

/* Recap/row grids — more breathing room at magazine width */
.mag-article .recap-grid { gap: clamp(14px, 2vw, 24px) !important; }
.mag-article .row2 { gap: clamp(16px, 2vw, 28px) !important; }

/* Section separator between articles — editorial rule line */
.mag-sep {
  max-width: 180px; height: 1px; background: var(--line);
  margin: 0 auto 56px;
  position: relative;
}
.mag-sep::before {
  content: "◇"; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg); padding: 0 10px;
  color: var(--brand); font-size: 12px;
}

/* --- Next-issue card at the end --- */
.mag-next {
  margin-top: 80px;
  background:
    radial-gradient(circle at 20% 0%, rgba(227,82,5,0.18), transparent 55%),
    linear-gradient(135deg, #0f1e38, #1c2e4e);
  color: #fff;
  padding: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  position: relative;
  overflow: hidden;
  /* Participates in the same scroll-reveal flow as articles */
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.8s var(--ease-out-expo),
    transform 0.9s var(--ease-out-expo);
}
.mag-next.in-view {
  opacity: 1; transform: translateY(0);
}
/* Slow pulsing accent blob */
.mag-next::after {
  content: ""; position: absolute; right: -40px; bottom: -40px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(227,82,5,0.28), transparent 70%);
  animation: mag-next-pulse 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes mag-next-pulse {
  0%,100% { transform: scale(1) translate(0,0); opacity: 0.8; }
  50%     { transform: scale(1.15) translate(-14px,-10px); opacity: 1; }
}
.mag-next .next-cover {
  width: 180px; aspect-ratio: 1/1;
  border: 2px solid var(--brand);
  box-shadow: 0 30px 50px -30px rgba(227,82,5,0.6);
  object-fit: cover;
  background: var(--bg);
  transition:
    transform 0.7s var(--ease-out-expo),
    box-shadow 0.6s var(--ease-out-expo);
}
.mag-next:hover .next-cover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: 0 40px 70px -30px rgba(227,82,5,0.85);
}
.mag-next .next-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.3em; color: var(--brand-soft);
  font-weight: 700; text-transform: uppercase;
}
.mag-next .next-title {
  font-size: 40px; font-weight: 900; margin-top: 10px;
  letter-spacing: -0.03em; line-height: 1.1;
}
.mag-next .next-title em {
  font-family: 'Playfair Display', serif; font-style: italic;
  color: var(--brand-soft); font-weight: 700;
}
.mag-next .next-sub {
  margin-top: 10px; font-size: 15.5px;
  color: rgba(255,228,208,0.88); line-height: 1.55;
  max-width: 520px;
}
.mag-next .next-cta {
  position: relative;
  margin-top: 20px; display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px;
  background: var(--brand); color: #fff;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  border: 2px solid var(--brand);
  overflow: hidden;
  isolation: isolate;
  transition: color 0.3s var(--ease-out-quart), letter-spacing 0.3s var(--ease-out-quart);
}
.mag-next .next-cta::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: var(--brand);
  transform: translateY(0);
  transition: transform 0.45s var(--ease-out-expo);
}
.mag-next .next-cta:hover::before { transform: translateY(102%); }
.mag-next .next-cta:hover {
  color: var(--brand-soft);
  letter-spacing: 0.26em;
}
.mag-next .next-cta:active { transform: translateY(1px); }

/* Center the site footer on magazine pages */
.mag-shell ~ .site-foot {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  text-align: center;
}

/* --- Floating "back to top" button --- */
.mag-top {
  position: fixed;
  right: max(28px, env(safe-area-inset-right, 28px));
  bottom: max(28px, env(safe-area-inset-bottom, 28px));
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 14px 30px -12px rgba(15,30,56,0.5);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700;
  opacity: 0; pointer-events: none; transform: translateY(14px) scale(0.92);
  transition:
    opacity 0.4s var(--ease-out-expo),
    transform 0.5s var(--ease-out-expo),
    background 0.3s var(--ease-out-quart),
    box-shadow 0.3s var(--ease-out-quart);
  z-index: 200;
}
.mag-top.visible {
  opacity: 1; pointer-events: auto;
  transform: translateY(0) scale(1);
}
.mag-top:hover {
  background: var(--brand);
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 24px 44px -16px rgba(227,82,5,0.6);
}
.mag-top:hover span { transform: translateY(-2px); }
.mag-top span {
  display: inline-block;
  transition: transform 0.35s var(--ease-out-expo);
}
.mag-top:active { transform: translateY(0) scale(0.96); }
@media (max-width: 640px) {
  .mag-top {
    right: max(14px, env(safe-area-inset-right, 14px));
    bottom: max(14px, env(safe-area-inset-bottom, 14px));
    width: 44px; height: 44px;
  }
}

/* --- Loading state --- */
.mag-article.loading {
  min-height: 300px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-mid);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .mag-shell {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px 24px 80px;
  }
  .mag-side {
    position: static;
    max-height: none;
    padding-right: 0;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }
  .mag-side nav ol { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .mag-side nav a { padding: 6px 10px; border-left: none; border-bottom: 2px solid transparent; }
  .mag-side nav a.current { border-left-color: transparent; border-bottom-color: var(--brand); }
  .mag-article { padding: 36px 28px; margin-bottom: 36px; }
  .mag-next { grid-template-columns: 1fr; padding: 36px 28px; text-align: center; }
  .mag-next .next-cover { max-width: 200px; margin: 0 auto; }
}
@media (max-width: 760px) {
  .mag-shell { padding: 16px 16px 60px; }
  .mag-article { margin-bottom: 56px; }
  .mag-article h1.hero { font-size: 38px !important; }
  .mag-article h1.title { font-size: 30px !important; line-height: 1.12 !important; }
  .mag-article h1.title.md,
  .mag-article h1.title.sm { font-size: 28px !important; }
  .mag-article .ask { font-size: 32px !important; }
  .mag-article .flourish { font-size: 40px !important; }
  /* Collapse structured 2-column blocks to one column.
     Using inline !important because card HTML sometimes has inline
     grid-template-columns that would otherwise win. */
  .mag-article .split,
  .mag-article .row2,
  .mag-article .map,
  .mag-article .recap-grid,
  .mag-article .tl-chart {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  /* Any inline grid inside article gets linearised on mobile.
     Cards frequently use "grid-template-columns: 1fr auto 1fr" or
     "repeat(3|4, 1fr)" in inline style — these overflow narrow viewports. */
  .mag-article .stage [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }
  /* The "→" or "≡" arrow column between gradient boxes becomes useless
     when the grid linearises — hide it. */
  .mag-article .stage [style*="1fr auto 1fr"] > *:nth-child(2) {
    display: none !important;
  }
  .mag-article .split .right .portrait { max-width: 280px; }
  .mag-article .era { flex-direction: column; gap: 8px; align-items: flex-start; }
  .mag-article .era .year { font-size: 42px !important; }
  /* Cover timeline: let the 5 tokens wrap instead of overflowing */
  .mag-article.cover-like .timeline {
    flex-wrap: wrap !important;
    row-gap: 6px !important;
  }
}

/* =========================================================
   Callback links — visible only inside magazine pages.
   In standalone card HTML (= PNG capture), callback-link
   is rendered as plain text (style.css). Here we re-enable
   click affordance and a small ↗ indicator.
   ========================================================= */
.mag-article .callback-link {
  cursor: pointer !important;
  transition: background 0.2s ease, transform 0.15s ease;
}
.mag-article .callback-link:hover {
  background: rgba(227, 82, 5, 0.18) !important;
}
.mag-article .callback-link::after {
  content: "  ↗" !important;
  opacity: 0.55;
  font-size: 0.9em;
  margin-left: 4px;
  display: inline;
}