/*
  Sherborn Partners site layout, v2 "Nocturne". Token variables only.
  Load order: brand/fonts/fonts.css -> brand/tokens/tokens.css -> brand/styles/base.css -> css/site.css
*/

/* Utilities */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--space-4); top: calc(-1 * var(--space-16)); z-index: 60;
  padding: var(--space-3) var(--space-6); background: var(--color-gold); color: var(--color-night);
  font-weight: var(--font-weight-medium); text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }
.skip-link:hover { color: var(--color-night); }

/* Anything in [brackets] still needs Harry's input */
.placeholder { color: var(--text-muted); }

/* Header: floats over the opening scene, gains a ground once you scroll */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color var(--motion-duration) var(--motion-easing), border-color var(--motion-duration) var(--motion-easing), backdrop-filter var(--motion-duration) var(--motion-easing);
}
.site-header.is-scrolled, .site-header.is-open {
  background: rgba(11, 21, 18, 0.88); border-bottom-color: var(--border);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.site-header.is-open { background: var(--bg); transition: none; min-height: 100svh; }
.site-header__inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: var(--space-4); padding-block: var(--space-4);
}
.site-header__logo { display: inline-flex; }
.site-header__logo img { display: block; height: var(--space-12); width: auto; }

.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: var(--space-8); }
.site-nav a, .site-footer__nav a {
  display: inline-flex; align-items: center; min-height: 44px;
  font-weight: var(--font-weight-medium); font-size: var(--text-xs);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; text-decoration: none;
}
.site-nav a { position: relative; }
.site-nav a::after {
  content: ""; position: absolute; left: 0; right: var(--tracking-eyebrow); bottom: var(--space-2);
  height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--motion-duration) var(--motion-easing);
}
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav .site-nav__cta { padding-inline: var(--space-4); border: 1px solid var(--border-accent); }
.site-nav .site-nav__cta::after { display: none; }
.site-nav .site-nav__cta:hover { border-color: var(--accent); }

.menu-toggle {
  display: none; align-items: center; justify-content: center; gap: var(--space-2);
  min-width: 44px; min-height: 44px; padding: var(--space-2) var(--space-4);
  background: transparent; color: var(--text); border: 1px solid var(--border-accent); border-radius: var(--radius-none);
  font-family: var(--font-body); font-weight: var(--font-weight-medium); font-size: var(--text-xs);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; cursor: pointer;
}

@media (max-width: 52rem) {
  .site-header__logo img { height: calc(var(--space-8) + var(--space-3)); }
  .js .menu-toggle { display: inline-flex; }
  .js .site-nav { display: none; flex-basis: 100%; padding-bottom: var(--space-6); }
  .js .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav li { border-top: 1px solid var(--border); }
  .site-nav a { display: flex; min-height: 56px; font-size: var(--text-sm); }
  .site-nav a::after { bottom: var(--space-3); right: auto; width: var(--space-8); }
  .site-nav .site-nav__cta { margin-top: var(--space-4); justify-content: center; border-color: var(--accent); }
}

/* Opening scene */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100svh; display: flex; align-items: center;
  padding-block: calc(var(--space-32) + var(--space-4)) var(--space-24);
  background: var(--glow-vignette), var(--glow-gold), var(--glow-forest), var(--bg);
}
/* Candlelight that follows the pointer (set by js/site.js) */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(28rem 28rem at var(--lx, 70%) var(--ly, 35%), rgba(214, 191, 142, 0.09), transparent 70%);
  transition: background-position var(--motion-duration) linear;
}
.hero__grid { position: relative; display: grid; gap: var(--space-12); align-items: center; width: 100%; }
@media (min-width: 60rem) {
  .hero__grid { grid-template-columns: 7fr 5fr; }
}
.hero h1 { max-width: 12ch; margin-bottom: var(--space-8); }
.hero h1 .line { display: block; overflow: hidden; padding-bottom: 0.08em; }
.hero h1 .line > span { display: block; }
.js .hero h1 .line > span { transform: translateY(105%); animation: rise var(--motion-slow) var(--motion-easing-reveal) forwards; animation-delay: var(--delay, 150ms); }
@keyframes rise { to { transform: none; } }
.hero .lead { max-width: 32rem; }
.js .hero .fade-in { opacity: 0; animation: fade var(--motion-slow) var(--motion-easing) forwards; animation-delay: var(--delay, 700ms); }
@keyframes fade { to { opacity: 1; } }

/* The seal: a slowly turning ring of words, echoing the monogram disc */
.seal { width: min(100%, 34rem); aspect-ratio: 1; margin-inline: auto; color: var(--accent); opacity: 0.9; }
.seal svg { width: 100%; height: 100%; overflow: visible; }
.seal__ring { transform-origin: 50% 50%; animation: turn 120s linear infinite; }
.seal__text { font-family: var(--font-body); font-size: 12.5px; letter-spacing: 0.42em; fill: currentColor; }
/* The centre of the seal is the official ivory monogram file, never redrawn */
.seal__mark { opacity: 0.95; }
@keyframes turn { to { transform: rotate(360deg); } }
@media (max-width: 59.99rem) {
  .seal { position: absolute; z-index: -1; right: -16rem; top: -6rem; width: 30rem; }
  .seal svg { opacity: 0.14; }
}

.scroll-cue {
  position: absolute; left: var(--layout-gutter); bottom: var(--space-8);
  display: flex; align-items: center; gap: var(--space-4);
  font-size: var(--text-xs); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--text-muted);
}
.scroll-cue::after { content: ""; width: var(--space-16); height: 1px; background: linear-gradient(90deg, var(--accent), transparent); }

/* Inner page openings */
.page-intro {
  position: relative; overflow: hidden;
  padding-block: calc(var(--space-32) + var(--space-16)) var(--space-24);
  background: var(--glow-vignette), var(--glow-forest), var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-intro h1 { max-width: 14ch; }

.section-head { max-width: 46rem; margin-bottom: var(--space-16); }
.section-head h2 { margin-bottom: 0; }
.section-head .lead { margin-top: var(--space-8); }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-6); margin-top: var(--space-12); }

/* Three movements */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-12); counter-reset: step; }
@media (min-width: 52rem) { .steps { grid-template-columns: repeat(3, 1fr); gap: var(--space-8); } }
.step { padding-top: var(--space-8); border-top: 1px solid var(--border-accent); }
.step h3 { font-size: var(--text-3xl); margin-bottom: var(--space-4); }
.step p { color: var(--text-muted); }

.steps--4 { gap: var(--space-12) var(--space-8); }
@media (min-width: 40rem) { .steps--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 68rem) { .steps--4 { grid-template-columns: repeat(4, 1fr); } }
.steps--4 .step h3 { font-size: var(--text-2xl); }

/* Service line / client segment: heading on the left, substance on the right */
.split { display: grid; gap: var(--space-12); }
@media (min-width: 60rem) { .split { grid-template-columns: 5fr 7fr; gap: var(--space-16); } .split__head { position: sticky; top: var(--space-32); align-self: start; } }
.split__head h2 { margin-bottom: var(--space-6); }
.split__body > * + * { margin-top: var(--space-12); }
.split__body h3 { font-family: var(--font-body); font-size: var(--text-xs); font-weight: var(--font-weight-medium); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--accent-text); margin-bottom: var(--space-4); }

/* Ruled lists: capabilities, mandates */
.list-rule { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--border); }
.list-rule li { padding-block: var(--space-4); border-top: 1px solid var(--border); }
.list-rule strong { display: block; font-weight: var(--font-weight-medium); }
.list-rule span { display: block; color: var(--text-muted); font-size: var(--text-sm); margin-top: var(--space-1); }

/* The questions a service line answers, in the client's words */
.questions { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); }
.questions li { font-family: var(--font-display); font-size: var(--text-xl); line-height: 1.3; padding-left: var(--space-6); border-left: 1px solid var(--accent); }

/* In-page links to sections */
.anchor-links { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-8); margin-top: var(--space-12); }

/* Pull quote */
.statement { position: relative; overflow: hidden; background: var(--glow-gold), var(--glow-forest), var(--bg-forest); text-align: center; }
.statement blockquote { margin: 0 auto; max-width: 56rem; }
.statement blockquote p {
  max-width: none; margin: 0 auto;
  font-family: var(--font-display); font-weight: var(--font-weight-regular);
  font-size: clamp(var(--text-2xl), 4.2vw, var(--text-5xl)); line-height: 1.15; text-wrap: balance;
}
.statement h2 { max-width: 22ch; margin-inline: auto; }
.statement .lead { margin: var(--space-8) auto 0; }
.statement .actions { justify-content: center; }
.statement .eyebrow { justify-content: center; }
.statement .eyebrow::after { content: ""; width: var(--space-8); height: 1px; background: currentColor; }

/* Services as an index, not a grid of boxes */
.index { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--border); }
.index li { border-top: 1px solid var(--border); }
.index__row {
  position: relative; display: grid; gap: var(--space-2) var(--space-8); align-items: baseline;
  grid-template-columns: 4rem 1fr; padding-block: var(--space-8); text-decoration: none;
  transition: background-color var(--motion-duration) var(--motion-easing), padding var(--motion-duration) var(--motion-easing);
}
@media (min-width: 52rem) { .index__row { grid-template-columns: 5rem 1.2fr 1.5fr auto; } }
a.index__row:hover { background: var(--bg-raised); padding-inline: var(--space-6); color: inherit; }
.index__num { font-family: var(--font-display); font-size: var(--text-xl); color: var(--accent-text); }
.index__title { font-family: var(--font-display); font-weight: var(--font-weight-medium); font-size: clamp(var(--text-xl), 3vw, var(--text-3xl)); line-height: 1.15; }
.index__desc { grid-column: 2; color: var(--text-muted); max-width: 32rem; }
@media (min-width: 52rem) { .index__desc { grid-column: auto; } }
.index__arrow { display: none; color: var(--accent); transition: transform var(--motion-duration) var(--motion-easing); }
@media (min-width: 52rem) { .index__arrow { display: block; } }
a.index__row:hover .index__arrow { transform: translateX(6px); }

/* Grids of panels */
.grid { display: grid; gap: var(--space-6); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.panel h3 { margin-bottom: var(--space-3); }
.panel p { color: var(--text-muted); }
.panel p:last-child { margin-bottom: 0; }
.label { font-size: var(--text-xs); font-weight: var(--font-weight-medium); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--accent-text); margin: 0 0 var(--space-4); }
.h3 { font-size: var(--text-2xl); line-height: var(--leading-snug); }

/* Portrait slot for partners */
.portrait-slot { display: flex; align-items: flex-end; aspect-ratio: 4 / 5; padding: var(--space-6); margin-bottom: var(--space-6); background: var(--glow-forest), var(--bg-deep); border: 1px solid var(--border); color: var(--text-muted); font-size: var(--text-sm); }

/* Closing invitation */
.invitation { text-align: center; }
.invitation .container { display: flex; flex-direction: column; align-items: center; }
.invitation h2 { max-width: 16ch; }
.invitation .lead { margin-inline: auto; }
.invitation .eyebrow { justify-content: center; }
.invitation .eyebrow::after { content: ""; width: var(--space-8); height: 1px; background: currentColor; }
.invitation .actions { justify-content: center; }

/* Contact */
.contact-grid { display: grid; gap: var(--space-16); }
@media (min-width: 60rem) { .contact-grid { grid-template-columns: 3fr 2fr; } }
.details { margin: 0; display: grid; gap: var(--space-8); }
.details > div { padding-top: var(--space-6); border-top: 1px solid var(--border-accent); }
.details dt { font-size: var(--text-xs); font-weight: var(--font-weight-medium); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--accent-text); }
.details dd { margin: var(--space-2) 0 0; font-family: var(--font-display); font-size: var(--text-xl); }

.form { display: grid; gap: var(--space-8); max-width: var(--layout-prose); }
.field label { display: block; margin-bottom: var(--space-3); font-size: var(--text-xs); font-weight: var(--font-weight-medium); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; }
.field__optional { letter-spacing: var(--tracking-label); color: var(--text-muted); text-transform: none; }
.field__hint { display: block; margin: calc(-1 * var(--space-1)) 0 var(--space-3); font-size: var(--text-sm); color: var(--text-muted); }
.field input, .field textarea, .field select {
  display: block; width: 100%; min-height: 52px; padding: var(--space-3) var(--space-4);
  font: inherit; color: var(--text); background: var(--bg-deep);
  border: 1px solid var(--control-border); border-radius: var(--radius-none);
  transition: border-color var(--motion-duration) var(--motion-easing), box-shadow var(--motion-duration) var(--motion-easing);
}
.field input:hover, .field textarea:hover, .field select:hover { border-color: var(--accent-strong); }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent-strong); box-shadow: 0 0 0 1px var(--accent-strong); outline: none; }
.field textarea { min-height: 11rem; resize: vertical; }
.field select { appearance: none; -webkit-appearance: none; padding-right: var(--space-12); background-image: linear-gradient(45deg, transparent 50%, var(--color-gold) 50%), linear-gradient(135deg, var(--color-gold) 50%, transparent 50%); background-position: calc(100% - 1.4rem) 50%, calc(100% - 1rem) 50%; background-size: 0.4rem 0.4rem; background-repeat: no-repeat; }
.field option { background: var(--color-night-deep); color: var(--color-ivory); }
.form__row { display: grid; gap: var(--space-8); }
@media (min-width: 40rem) { .form__row { grid-template-columns: 1fr 1fr; } }
.form__note { font-size: var(--text-sm); color: var(--text-muted); margin: 0; }
.field [aria-invalid="true"] { border-color: var(--color-ivory); box-shadow: inset 0 0 0 1px var(--color-ivory); }
/* No error colour is approved yet: errors are marked by weight, outline and the "Error:" prefix */
.field__error { margin: var(--space-2) 0 0; font-size: var(--text-sm); font-weight: var(--font-weight-medium); }
.field__error::before { content: "— "; color: var(--accent-strong); }
.field__error[hidden] { display: none; }

.form-notice { margin-bottom: var(--space-8); }
.form-notice h2 { font-size: var(--text-2xl); margin-bottom: var(--space-3); }
.form-notice ul { margin: 0; padding-left: var(--space-6); }
.form-notice p:last-child { margin-bottom: 0; }

/* Footer */
.site-footer { position: relative; background: var(--bg-deep); border-top: 1px solid var(--border-accent); }
.site-footer__top { display: grid; gap: var(--space-12); padding-block: var(--space-24) var(--space-16); }
@media (min-width: 52rem) { .site-footer__top { grid-template-columns: 1fr auto; align-items: end; } }
.site-footer__descriptor { margin: var(--space-6) 0 0; color: var(--text-muted); font-size: var(--text-sm); max-width: 26rem; }
.site-footer__logo img { display: block; height: var(--space-12); width: auto; }
.site-footer__nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0 var(--space-8); }
.site-footer__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-6); border-top: 1px solid var(--border); font-size: var(--text-sm); color: var(--text-muted); }
.site-footer__legal p { margin: 0; max-width: none; }