/* ============================================================
   CREUSLIFE — Sprint 4 Polish CSS
   System ribbon, next step card, F/O/P tabs, enhanced graphs
   ============================================================ */

/* ── System Ribbon ─────────────────────────────────────────── */
.system-ribbon {
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 0;
  position: sticky;
  top: 64px;
  z-index: 80;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.system-ribbon::-webkit-scrollbar { display: none; }
.system-ribbon__inner {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 24px;
  max-width: 1140px;
  margin: 0 auto;
  min-width: max-content;
}
.system-ribbon__step {
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}
.system-ribbon__label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 10px 14px;
  white-space: nowrap;
  transition: color .2s;
}
.system-ribbon__step:hover .system-ribbon__label { color: var(--text-2); }
.system-ribbon__step--active .system-ribbon__label {
  color: var(--teal);
  background: var(--teal-dim);
  border-radius: var(--radius-sm);
}
.system-ribbon__arrow {
  color: var(--text-3);
  font-size: 0.75rem;
  padding: 0 2px;
  flex-shrink: 0;
}

/* ── Next Step Footer Card ─────────────────────────────────── */
.next-step-card {
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: 32px 40px;
  margin: 48px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
}
.next-step-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), rgba(45,212,191,0.1));
}
.next-step-card__left {}
.next-step-card__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 6px;
}
.next-step-card__heading {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.2;
}
.next-step-card__sub {
  font-size: 0.9rem;
  color: var(--text-2);
  max-width: 480px;
}
.next-step-card__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
  min-width: 200px;
}
.next-step-card__actions .btn {
  width: 100%;
  justify-content: center;
}
.next-step-card__or {
  font-size: 0.75rem;
  color: var(--text-3);
  text-align: center;
}

/* ── Foundation / Optimize / Precision Tabs ────────────────── */
.fop-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
  background: var(--surface);
  padding: 4px;
  border-radius: var(--radius);
  width: fit-content;
}
.fop-tab {
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-3);
  transition: all .2s;
  font-family: var(--font-body);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.fop-tab.active { background: var(--teal); color: var(--text-inv); }
.fop-tab[data-fop="foundation"].active { background: #0891b2; }
.fop-tab[data-fop="optimize"].active   { background: var(--teal); }
.fop-tab[data-fop="precision"].active  { background: #8b5cf6; }

.fop-content { display: none; }
.fop-content.active { display: block; }

.fop-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.fop-tier-badge--foundation { background: rgba(8,145,178,0.12); color: #0891b2; }
.fop-tier-badge--optimize   { background: var(--teal-dim); color: var(--teal); }
.fop-tier-badge--precision  { background: rgba(139,92,246,0.12); color: #8b5cf6; }

/* ── Enhanced Relationship Map ─────────────────────────────── */
.rel-map {
  margin: 32px 0;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.rel-map__title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 20px;
}
.rel-map__chain {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.rel-map__node {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all .2s;
  position: relative;
}
a.rel-map__node:hover {
  border-color: var(--border-2);
  background: var(--surface);
  transform: translateX(4px);
}
.rel-map__node--active {
  border-color: var(--teal) !important;
  background: var(--teal-dim) !important;
}
.rel-map__node--active .rel-map__node-label { color: var(--teal); }
.rel-map__node-icon {
  width: 38px; height: 38px;
  background: var(--surface);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  border: 1px solid var(--border);
}
.rel-map__node--active .rel-map__node-icon { background: var(--teal-dim); border-color: rgba(45,212,191,0.3); }
.rel-map__node-body { flex: 1; }
.rel-map__node-step {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1px;
}
.rel-map__node--active .rel-map__node-step { color: var(--teal); }
.rel-map__node-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}
.rel-map__node-sub {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 1px;
}
.rel-map__node-arrow {
  color: var(--text-3);
  font-size: 0.9rem;
  flex-shrink: 0;
}
a.rel-map__node:hover .rel-map__node-arrow { color: var(--teal); }
.rel-map__connector {
  height: 20px;
  display: flex;
  align-items: center;
  padding-left: 32px;
}
.rel-map__connector-line {
  width: 2px;
  height: 100%;
  background: var(--border);
  border-radius: 1px;
}

/* Horizontal option for desktop */
@media (min-width: 800px) {
  .rel-map--horizontal .rel-map__chain {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
    overflow-x: auto;
  }
  .rel-map--horizontal .rel-map__node {
    flex-direction: column;
    text-align: center;
    align-items: center;
    min-width: 140px;
    flex: 1;
    gap: 8px;
  }
  .rel-map--horizontal .rel-map__node-body { text-align: center; }
  .rel-map--horizontal .rel-map__node-arrow { display: none; }
  .rel-map--horizontal .rel-map__connector {
    width: 32px; height: auto;
    padding-left: 0;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .rel-map--horizontal .rel-map__connector-line {
    width: 100%; height: 2px;
  }
  .rel-map--horizontal .rel-map__connector::after {
    content: '→';
    position: absolute;
    color: var(--teal);
    font-size: 0.9rem;
  }
}

/* ── Measure Dominant Banner ───────────────────────────────── */
.measure-banner {
  background: linear-gradient(135deg, var(--bg-3) 0%, rgba(45,212,191,0.04) 100%);
  border: 1px solid rgba(45,212,191,0.15);
  border-radius: var(--radius-xl);
  padding: 28px 32px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.measure-banner::before {
  content: '→ MEASURE FIRST';
  position: absolute;
  top: 12px; right: 16px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: rgba(45,212,191,0.3);
}
.measure-banner__title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}
.measure-banner__items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.measure-banner__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  transition: border-color .2s, background .2s;
  flex: 1;
  min-width: 150px;
}
.measure-banner__item:hover {
  border-color: var(--teal);
  background: var(--teal-dim);
}
.measure-banner__item-icon { font-size: 1rem; flex-shrink: 0; }
.measure-banner__item-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  display: block;
}
.measure-banner__item-val {
  font-size: 0.75rem;
  color: var(--teal);
}
.measure-banner__cta {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-3);
  font-style: italic;
}

/* ── Compact Author Block (editorial) ──────────────────────── */
.author-block--editorial .author-block__name {
  font-size: 0.875rem;
}
.author-block--editorial .author-block__avatar {
  background: var(--surface);
  font-size: 1rem;
}

@media (max-width: 700px) {
  .next-step-card {
    flex-direction: column;
    padding: 24px;
    text-align: center;
  }
  .next-step-card__actions { min-width: unset; width: 100%; }
  .next-step-card__sub { max-width: none; }
  .fop-tabs { width: 100%; }
  .fop-tab { flex: 1; text-align: center; padding: 8px 10px; }
  .system-ribbon__label { padding: 10px 10px; font-size: 0.68rem; }
}