/* ============================================================
   STRAVION — Institutional Advisory site
   Site-level layout built ON TOP of the design-system tokens
   (styles.css). Cream editorial ground; the gold hairline is the
   only structural device; air is the luxury signal.
   ============================================================ */

html { scroll-behavior: smooth; }
body { margin: 0; }

/* Anchor offset for the sticky header */
:root { --nav-h: 76px; }
[id] { scroll-margin-top: calc(var(--nav-h) + 24px); }

/* Page framing ------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: 980px; }

.section { padding-block: clamp(4.5rem, 9vw, 8.5rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 5.5rem); }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard),
              backdrop-filter var(--duration-base) var(--ease-standard);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(253, 252, 250, 0.82);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--rule-faint);
}
.nav__inner {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--ink);
}
.brand .wordmark { font-size: 1.05rem; }
.brand__desc {
  font-family: var(--font-sans);
  font-weight: var(--weight-semibold);
  font-size: 0.5rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-right: -0.42em;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 2.4vw, 2.6rem);
}
.nav__link {
  font-family: var(--font-sans);
  font-weight: var(--weight-semibold);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  padding-block: 0.4rem;
  position: relative;
  transition: var(--transition-color);
}
.nav__link:hover { color: var(--ink); }
.nav__link.is-active { color: var(--ink); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--rule);
}
.nav__toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--ink);
}

/* ============================================================
   BUTTONS  (plain-HTML mirror of the DS Button, tuned for cream)
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 14px 28px;
  transition: var(--transition-color);
  white-space: nowrap;
}
.btn--sm { padding: 9px 20px; font-size: 0.66rem; }
.btn--primary { background: var(--ink); color: var(--cream); border-color: var(--ink); }
.btn--primary:hover { background: var(--espresso); border-color: var(--espresso); }
.btn--outline { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn--outline:hover { border-color: var(--gold-soft); color: var(--sienna); }
.btn--link {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--sienna);
  letter-spacing: 0.14em;
}
.btn--link:hover { color: var(--gold-soft); }
.btn--link .arrow { transition: transform var(--duration-base) var(--ease-out); }
.btn--link:hover .arrow { transform: translateX(4px); }

/* On a dark ground (footer / dark bands) */
.on-dark .btn--outline { color: var(--cream); border-color: var(--border-strong); }
.on-dark .btn--outline:hover { color: var(--gold); border-color: var(--gold); }
.on-dark .btn--primary { background: var(--cream); color: var(--ink); border-color: var(--cream); }
.on-dark .btn--primary:hover { background: var(--tan-warm); border-color: var(--tan-warm); }

/* ============================================================
   TEXT HELPERS
   ============================================================ */
.eyebrow-row { display: inline-flex; align-items: center; gap: 0.85rem; }
.eyebrow-row .rule { width: 34px; height: 1px; background: var(--rule); display: inline-block; }
.measure { max-width: var(--measure); }
.measure-tight { max-width: var(--measure-tight); }
.lead-block > * + * { margin-top: 1.5rem; }
.kicker { color: var(--text-secondary); }

/* Section heading pattern */
.section-head { max-width: 52ch; }
.section-head .type-eyebrow { display: block; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0; }
.section-head p { margin: 1.5rem 0 0; }

/* ============================================================
   IMAGE PLATES  (labeled placeholders — replace with brand photography)
   ============================================================ */
.plate {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--gradient-atmosphere);
  isolation: isolate;
}
.plate::after {
  content: attr(data-label);
  position: absolute;
  left: 14px; bottom: 12px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: rgba(240, 236, 225, 0.62);
  background: rgba(14, 13, 12, 0.28);
  padding: 4px 8px;
  border-radius: 2px;
  z-index: 2;
}
.plate--warm {
  background:
    repeating-linear-gradient(135deg, rgba(122,73,32,0.05) 0 2px, transparent 2px 11px),
    linear-gradient(168deg, #efe9dd 0%, #e6d8c2 52%, #d8c3a0 100%);
}
.plate--warm::after { color: rgba(70,42,20,0.6); background: rgba(240,236,225,0.5); }
.plate--tall { aspect-ratio: 3 / 4; }
.plate--wide { aspect-ratio: 16 / 9; }
.plate--map { aspect-ratio: 21 / 9; }

/* ============================================================
   PRACTICE GRID (home overview)
   ============================================================ */
.practice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  border-top: 1px solid var(--rule-faint);
}
.practice-cell {
  padding: 2.4rem 2rem 2.6rem;
  border-bottom: 1px solid var(--rule-faint);
  border-right: 1px solid var(--rule-faint);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 220px;
  transition: background var(--duration-base) var(--ease-standard);
  text-decoration: none;
  color: inherit;
}
.practice-cell:hover { background: rgba(122, 73, 32, 0.035); }
.practice-cell__no {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--gold-soft);
}
.practice-cell__title { margin: 0; }
.practice-cell__desc { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }
.practice-cell .arrow {
  margin-top: auto;
  color: var(--gold-soft);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}
.practice-cell:hover .arrow { opacity: 1; transform: translateX(0); }

/* Deep practice rows (advisory page) */
.practice-row {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: clamp(2rem, 5vw, 5rem);
  padding-block: clamp(3rem, 5vw, 4.5rem);
  border-top: 1px solid var(--rule-faint);
  align-items: start;
}
.practice-row__index {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2.5rem, 4vw, 3.4rem);
  line-height: 1;
  color: var(--tan);
  letter-spacing: -0.02em;
}
.practice-row h3 { margin: 1rem 0 0; }
.practice-row .type-lead { margin-top: 1.25rem; }
.mandate-list { list-style: none; margin: 1.75rem 0 0; padding: 0; }
.mandate-list li {
  padding: 0.75rem 0 0.75rem 1.5rem;
  border-top: 1px solid var(--rule-faint);
  position: relative;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.mandate-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--gold-soft);
  font-weight: 600;
}

/* ============================================================
   PRINCIPLES / APPROACH
   ============================================================ */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(2rem, 4vw, 3.5rem);
}
.principle {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
}
.principle h3 { margin: 0; }
.principle p { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }

.steps { display: grid; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-block: 2.25rem;
  border-top: 1px solid var(--rule-faint);
  align-items: baseline;
}
.step__label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-soft);
}
.step h3 { margin: 0 0 0.75rem; }
.step p { margin: 0; color: var(--text-secondary); }

/* ============================================================
   INTELLIGENCE (notes)
   ============================================================ */
.note-feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.note-list { display: grid; gap: 0; }
.note {
  display: grid;
  grid-template-columns: 9rem 1fr auto;
  gap: clamp(1.25rem, 3vw, 3rem);
  padding-block: 2.25rem;
  border-top: 1px solid var(--rule-faint);
  align-items: baseline;
  text-decoration: none;
  color: inherit;
  transition: background var(--duration-base) var(--ease-standard);
}
.note:hover { background: rgba(122, 73, 32, 0.035); }
.note:last-child { border-bottom: 1px solid var(--rule-faint); }
.note__meta {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-soft);
  line-height: 1.6;
}
.note h3 { margin: 0 0 0.6rem; }
.note p { margin: 0; color: var(--text-secondary); font-size: 0.95rem; max-width: 60ch; }
.note__go { color: var(--gold-soft); align-self: center; }

/* ============================================================
   GLOBAL REACH
   ============================================================ */
.reach {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.office-list { display: grid; gap: 0; }
.office {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding-block: 1.35rem;
  border-top: 1px solid var(--rule-faint);
}
.office:last-child { border-bottom: 1px solid var(--rule-faint); }
.office__city {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.office__role {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   STAT ROW
   ============================================================ */
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(2.5rem, 6vw, 5.5rem);
}
.stat__value {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2rem, 3.5vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stat__label {
  margin-top: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   CTA / ENQUIRE BAND (dark)
   ============================================================ */
.band-dark {
  background: var(--ink);
  color: var(--cream);
}
.band-dark.ground-atmosphere { background: var(--gradient-atmosphere); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--ink); color: var(--cream); }
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(3.5rem, 6vw, 5.5rem);
}
.footer__col h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 1.4rem;
}
.footer__col a, .footer__col p {
  display: block;
  color: rgba(240, 236, 225, 0.68);
  text-decoration: none;
  font-size: 0.92rem;
  margin: 0 0 0.75rem;
  transition: var(--transition-color);
}
.footer__col a:hover { color: var(--cream); }
.footer__brand .wordmark { font-size: 1.4rem; color: var(--cream); }
.footer__endline {
  margin-top: 1.4rem;
  color: var(--gold-soft);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-block: 1.75rem;
  border-top: 1px solid rgba(240, 236, 225, 0.1);
  color: rgba(240, 236, 225, 0.4);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

/* ============================================================
   EDITORIAL REVEAL — transform-only, ALWAYS opaque.
   Resting state is the visible end-state; @starting-style supplies
   a from-value on TRANSFORM only, so content can never be stuck
   hidden (print, reduced-motion and any inert-transition context
   all show fully legible copy, at most 14px off).
   ============================================================ */
.fx { opacity: 1; transform: none; }
@media (prefers-reduced-motion: no-preference) {
  .fx.is-in,
  .fx { transition: transform 0.85s var(--ease-out); }
  @starting-style {
    .fx { transform: translateY(14px); }
  }
  .fx-2 { transition-delay: 0.09s; }
  .fx-3 { transition-delay: 0.18s; }
  .fx-4 { transition-delay: 0.27s; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(253, 252, 250, 0.97);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--rule-faint);
    padding: 0.5rem var(--gutter) 1.5rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard);
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links .nav__link { width: 100%; padding-block: 0.9rem; border-bottom: 1px solid var(--rule-faint); font-size: 0.8rem; }
  .nav__links .btn { margin-top: 1rem; }
  .nav__toggle { display: inline-flex; }
  .practice-row { grid-template-columns: 1fr; gap: 1.25rem; }
  .note { grid-template-columns: 1fr; gap: 0.5rem; }
  .note__go { display: none; }
  .note-feature, .reach { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 2.5rem; }
  .step { grid-template-columns: 1fr; gap: 0.5rem; }
}