/* ══════════════════════════════════════════════════════════════════
   operation.css — Styles for /operation/ page ONLY
   Extracted from main.css to avoid full-stylesheet collision with v3.css
   ══════════════════════════════════════════════════════════════════ */

/* ── Variable bridge: main.css names → v3.css values ─────────── */
:root {
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --nav-height: 64px;
  --gutter: clamp(1rem, 2vw, 2rem);
  --timing-fast: 0.3s;
  --easing-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --easing-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --text-primary: var(--fg);
  --text-secondary: var(--fog-2);
  --text-muted: var(--fog-3);
  --border-light: var(--line);
}

/* ── Mind map color tokens ───────────────────────────────────── */
:root[data-theme="night"] {
  --mm-cyan:    #05d1e1;
  --mm-mint:    #39ffcf;
  --mm-purple:  #a855f7;
  --mm-amber:   #fbbf24;
  --mm-pink:    #f472b6;
  --mm-violet:  #8b5cf6;
  --mm-rose:    #fb7185;
  --mm-cyan-glow:   rgba(5, 209, 225, 0.45);
  --mm-mint-glow:   rgba(57, 255, 207, 0.40);
  --mm-purple-glow: rgba(168, 85, 247, 0.45);
  --mm-amber-glow:  rgba(251, 191, 36, 0.40);
  --mm-pink-glow:   rgba(244, 114, 182, 0.45);
  --mm-violet-glow: rgba(139, 92, 246, 0.45);
  --mm-rose-glow:   rgba(251, 113, 133, 0.40);
  --mm-leaf-bg: rgba(255, 255, 255, 0.025);
  --mm-leaf-bg-hover: rgba(255, 255, 255, 0.05);
  --mm-leaf-border: rgba(255, 255, 255, 0.07);
  --mm-mono-bg: rgba(255, 255, 255, 0.04);
}
:root[data-theme="day"] {
  --mm-cyan:    #0891b2;
  --mm-mint:    #059669;
  --mm-purple:  #7c3aed;
  --mm-amber:   #b45309;
  --mm-pink:    #db2777;
  --mm-violet:  #6d28d9;
  --mm-rose:    #be123c;
  --mm-cyan-glow:   rgba(8, 145, 178, 0.22);
  --mm-mint-glow:   rgba(5, 150, 105, 0.20);
  --mm-purple-glow: rgba(124, 58, 237, 0.22);
  --mm-amber-glow:  rgba(180, 83, 9, 0.20);
  --mm-pink-glow:   rgba(219, 39, 119, 0.22);
  --mm-violet-glow: rgba(109, 40, 217, 0.22);
  --mm-rose-glow:   rgba(190, 18, 60, 0.20);
  --mm-leaf-bg: rgba(0, 0, 0, 0.015);
  --mm-leaf-bg-hover: rgba(0, 0, 0, 0.035);
  --mm-leaf-border: rgba(0, 0, 0, 0.08);
  --mm-mono-bg: rgba(0, 0, 0, 0.04);
}

/* ── Site map hub ────────────────────────────────────────────── */
.sitemap-hub { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.mindmap-page { padding-top: var(--spacing-md); }

.sitemap-hub__intro { text-align: center; max-width: 760px; margin: 0 auto var(--spacing-lg); }
.sitemap-hub__eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mm-cyan);
  padding: 0.4rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--mm-cyan) 40%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--mm-cyan) 8%, transparent);
  margin-bottom: var(--spacing-sm);
}
.sitemap-hub__intro h1 { margin: 0 0 var(--spacing-sm); letter-spacing: -0.01em; }
.sitemap-hub__lede { font-size: 1.0625rem; line-height: 1.75; max-width: 600px; margin: 0 auto; }

.sitemap-hub__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--spacing-md);
}
.sitemap-hub__cta-btn {
  font-size: 1.0625rem;
  padding: 0.95rem 1.85rem;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mm-cyan) 18%, transparent),
              0 10px 30px color-mix(in srgb, var(--mm-cyan-glow) 60%, transparent);
}
.sitemap-hub__cta-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding: var(--spacing-md) 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.sitemap-col__heading {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mm-cyan);
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--mm-cyan) 22%, transparent);
}
.sitemap-col__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.sitemap-col__list a {
  display: inline-block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.2rem 0;
  transition: color var(--timing-fast) var(--easing-smooth),
              transform var(--timing-fast) var(--easing-smooth);
}
.sitemap-col__list a:hover {
  color: var(--text-primary);
  transform: translateX(3px);
}

.sitemap-hub__divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}
.sitemap-hub__divider-line { flex: 1; height: 1px; background: var(--border-light); }
.sitemap-hub__divider-label {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

@media (max-width: 1024px) {
  .sitemap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 540px) {
  .sitemap-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .sitemap-hub__divider { flex-direction: column; gap: 0.5rem; }
  .sitemap-hub__divider-line { width: 100%; }
}

/* ── Mind map intro ──────────────────────────────────────────── */
.mm-intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--spacing-xl);
}
.mm-eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mm-cyan);
  padding: 0.4rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--mm-cyan) 40%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--mm-cyan) 8%, transparent);
  margin-bottom: var(--spacing-sm);
}
.mm-intro h1 {
  margin: 0 0 var(--spacing-sm);
  letter-spacing: -0.01em;
}
.mm-lede { font-size: 1.0625rem; line-height: 1.75; max-width: 640px; margin: 0 auto; }

.mm-stat-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.mm-stat-strip > div { text-align: center; }
.mm-stat-strip strong {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.1;
}
.mm-stat-strip span {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

/* ── Controls ────────────────────────────────────────────────── */
.mm-controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}
.mm-control {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.9rem;
  background: var(--mm-leaf-bg);
  color: var(--text-secondary);
  border: 1px solid var(--mm-leaf-border);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--timing-fast) var(--easing-smooth);
}
.mm-control:hover {
  color: var(--text-primary);
  border-color: color-mix(in srgb, var(--mm-cyan) 50%, transparent);
  background: var(--mm-leaf-bg-hover);
}

/* ── Canvas (root + connectors + branches) ───────────────────── */
.mm-canvas {
  position: relative;
  padding: var(--spacing-md) 0 var(--spacing-lg);
}
.mm-connectors {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: visible;
}
.mm-connector { transition: stroke-dashoffset 0.5s var(--easing-premium); }

/* Root node */
.mm-root {
  position: relative;
  width: max-content;
  margin: 0 auto var(--spacing-lg);
  z-index: 2;
}
.mm-root__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.1rem 1.75rem;
  border-radius: 12px;
  background:
    radial-gradient(ellipse at top, color-mix(in srgb, var(--mm-cyan) 20%, transparent), transparent 70%),
    color-mix(in srgb, var(--mm-cyan) 6%, transparent);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--mm-cyan) 30%, transparent),
    0 10px 40px color-mix(in srgb, var(--mm-cyan-glow) 60%, transparent),
    0 0 80px var(--mm-cyan-glow);
}
.mm-root__eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mm-cyan);
}
.mm-root__name {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.mm-root__note {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.mm-root__pulse {
  position: absolute;
  inset: -6px;
  border-radius: 18px;
  border: 1px solid var(--mm-cyan);
  opacity: 0;
  animation: mm-pulse 3s ease-out infinite;
  pointer-events: none;
}
@keyframes mm-pulse {
  0%   { opacity: 0.5; transform: scale(1); }
  100% { opacity: 0;   transform: scale(1.12); }
}

/* ── Branches grid ───────────────────────────────────────────── */
.mm-branches {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-sm);
  position: relative;
  z-index: 2;
}
.mm-branch {
  border: 1px solid var(--mm-leaf-border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color var(--timing-fast) var(--easing-smooth);
}
.mm-branch.is-open { border-color: color-mix(in srgb, var(--mm-cyan) 35%, transparent); }

.mm-branch__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1rem;
  cursor: pointer;
  background: var(--mm-leaf-bg);
  transition: background var(--timing-fast) var(--easing-smooth);
  border: none;
  width: 100%;
  text-align: left;
  color: inherit;
  font: inherit;
}
.mm-branch__head:hover { background: var(--mm-leaf-bg-hover); }
.mm-branch__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  font-size: 0.9rem;
}
.mm-branch__label {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.005em;
}
.mm-branch__count {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-left: auto;
  letter-spacing: 0.06em;
}
.mm-branch__summary {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  line-height: 1.4;
}
.mm-branch__chevron {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  transition: transform var(--timing-fast) var(--easing-smooth);
}
.mm-branch.is-open .mm-branch__chevron { transform: rotate(180deg); }

/* Leaves (children) */
.mm-leaves {
  display: none;
  padding: 0 0.75rem 0.75rem;
  gap: 0.35rem;
}
.mm-branch.is-open .mm-leaves { display: flex; flex-direction: column; }

.mm-leaf {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  transition: background var(--timing-fast) var(--easing-smooth);
}
.mm-leaf:hover { background: var(--mm-leaf-bg-hover); }
.mm-leaf__dot {
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-top: 0.45rem;
}
.mm-leaf__body {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}
.mm-leaf__name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.35;
}
.mm-leaf__meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.mm-leaf__mono {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  background: var(--mm-mono-bg);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  width: max-content;
  margin-top: 0.15rem;
  letter-spacing: 0.02em;
}

/* Branch footer */
.mm-branch__footer {
  padding: 0.5rem 0.75rem 0.65rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--mm-leaf-border);
  font-style: italic;
}
.mm-branch:not(.is-open) .mm-branch__footer { display: none; }

/* ── Key / How to read ───────────────────────────────────────── */
.mm-key {
  max-width: 640px;
  margin: var(--spacing-lg) auto 0;
  padding: var(--spacing-md);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background: var(--mm-leaf-bg);
}
.mm-key h2 {
  font-size: 1rem;
  margin: 0 0 var(--spacing-sm);
  color: var(--text-primary);
}
.mm-key p { font-size: 0.9375rem; line-height: 1.7; }
.mm-key__why { margin-top: var(--spacing-sm); font-size: 0.875rem; font-style: italic; }

/* ── CTA ─────────────────────────────────────────────────────── */
.mm-cta {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
}

/* ── Philosophy quote ────────────────────────────────────────── */
.mm-philosophy {
  max-width: 680px;
  margin: 0 auto var(--spacing-lg);
  text-align: center;
  position: relative;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
  border: 1px solid color-mix(in srgb, var(--mm-cyan) 15%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--mm-cyan) 3%, transparent);
}
.mm-philosophy__mark {
  font-size: 3rem;
  line-height: 1;
  color: var(--mm-cyan);
  opacity: 0.3;
  position: absolute;
  top: 0.5rem;
  left: 1rem;
  font-family: Georgia, serif;
}
.mm-philosophy__body {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  border: none;
  padding: 0;
  margin: 0;
  quotes: none;
}
.mm-philosophy__body::before,
.mm-philosophy__body::after { content: ""; }
.mm-philosophy__body em {
  color: var(--text-primary);
  font-style: italic;
  font-weight: 500;
}
.mm-philosophy__attr {
  display: block;
  margin-top: var(--spacing-sm);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-style: normal;
}

/* ── Responsive — tablet ─────────────────────────────────────── */
@media (max-width: 1180px) {
  .mm-branches { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mm-stat-strip { grid-template-columns: repeat(2, 1fr); row-gap: var(--spacing-sm); }
  .mm-stat-strip > div { padding: var(--spacing-xs) 0; }
}

/* ── Responsive — mobile ─────────────────────────────────────── */
@media (max-width: 880px) {
  .mindmap-page { padding-top: var(--spacing-md); }
  .mm-branches { grid-template-columns: 1fr; gap: var(--spacing-xs); }
  .mm-root { margin-bottom: var(--spacing-md); }
  .mm-root__inner { padding: 0.9rem 1.25rem; }
  .mm-branch__head { padding: 0.85rem 0.9rem; gap: 0.6rem; }
  .mm-branch__summary { font-size: 0.75rem; }
  .mm-controls { flex-wrap: wrap; }
  .mm-connectors { display: none; }
  .mm-branch:not(.is-open) .mm-leaves { padding: 0; }
}

/* ── Day-theme root node calibration ─────────────────────────── */
:root[data-theme="day"] .mm-root__inner {
  background:
    radial-gradient(ellipse at top, color-mix(in srgb, var(--mm-cyan) 10%, transparent), transparent 70%),
    #ffffff;
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--mm-cyan) 18%, transparent),
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 0 50px var(--mm-cyan-glow);
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .mm-root__pulse { animation: none !important; }
  .mm-leaves, .mm-branch__head { transition: none !important; }
}