/* =============================================================
   Middle Rock Management - components.css
   Header, navigation, buttons, cards, footer, image windows.
   ============================================================= */

/* --------------------------- Buttons --------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.9em 1.6em;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.btn:hover, .btn:focus-visible { background: var(--ink); color: var(--ink-invert); }
.btn .btn__arrow { transition: transform var(--dur-fast) var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }
.btn--invert { border-color: var(--ink-invert); color: var(--ink-invert); }
.btn--invert:hover, .btn--invert:focus-visible { background: var(--ink-invert); color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  .btn, .btn .btn__arrow { transition: none; }
  .btn:hover .btn__arrow { transform: none; }
}

/* --------------------------- Header ---------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);   /* masthead line - always visible */
  transition: background var(--dur-fast) var(--ease);
}
.site-header[data-scrolled="true"] {
  background: color-mix(in srgb, var(--paper) 96%, transparent);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  min-height: var(--header-h);
  padding-block: 0.65rem;
}
/* Masthead brand: logo + descriptor - the whole area links home */
.masthead-brand {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  min-width: 0;
  flex-shrink: 0;
  color: inherit;
  text-decoration: none;
}
.brand__logo { height: clamp(56px, 5.4vw, 72px); width: auto; }
.brand__descriptor {
  padding-left: var(--space-s);
  border-left: 1px solid var(--rule-strong);
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
  line-height: 1.25;
  max-width: 16ch;
}
@media (max-width: 620px) {
  .brand__descriptor { display: none; }
}
.brand__wordmark {
  font-family: var(--font-display);
  font-size: var(--step-0);
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1;
}

/* Primary nav */
.nav { display: flex; align-items: center; gap: clamp(1rem, 0.5rem + 1.6vw, 2.25rem); }
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 0.5rem + 1.6vw, 2.25rem);
  list-style: none;
  margin: 0; padding: 0;
}
.nav__link {
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  position: relative;
  padding-block: 0.35rem;
}
.nav__link[aria-current="page"] { color: var(--ink); }
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 1px; width: 100%;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease);
}
.nav__link:hover::after,
.nav__link:focus-visible::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav__socials { display: flex; align-items: center; gap: 1rem; }
.nav__socials a { color: var(--ink-muted); display: inline-flex; transition: color var(--dur-fast) var(--ease); }
.nav__socials a:hover, .nav__socials a:focus-visible { color: var(--ink); }
.nav__socials svg { width: 20px; height: 20px; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 0; background: transparent;
  cursor: pointer;
  align-items: center; justify-content: center;
  color: var(--ink);
}
.nav-toggle svg { width: 26px; height: 26px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    padding: var(--space-m) var(--gutter) var(--space-l);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-fast) var(--ease),
                transform var(--dur-fast) var(--ease),
                visibility var(--dur-fast);
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
  }
  .nav[data-open="true"] { opacity: 1; visibility: visible; transform: translateY(0); }
  /* No-JS fallback: the toggle needs JavaScript, so without it show the nav statically. */
  .no-js .nav-toggle { display: none; }
  .no-js .nav {
    position: static; inset: auto;
    opacity: 1; visibility: visible; transform: none;
    max-height: none; overflow: visible;
    border-bottom: 0; padding: 0 0 var(--space-s);
  }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; width: 100%; }
  .nav__list li { width: 100%; }
  .nav__link { display: block; width: 100%; font-size: var(--step-1); padding-block: 0.85rem; border-bottom: 1px solid var(--rule); }
  .nav__list li:last-child .nav__link { border-bottom: 0; }
  .nav__link::after { display: none; }
  .nav__socials { padding-top: var(--space-m); }
  @media (prefers-reduced-motion: reduce) { .nav { transition: none; } }
}

/* --------------------------- Footer ---------------------------- */
.site-footer {
  position: relative;
  background: var(--panel-dark);
  color: var(--ink-invert);
  padding-block: clamp(2rem, 1.25rem + 2.5vw, 3.75rem) var(--space-l);
}
.site-footer a { color: var(--ink-invert); }

/* Closing CTA (email + policy) with the logo as a sign-off */
.footer__cta {
  padding-bottom: clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
  margin-bottom: clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
  border-bottom: 1px solid color-mix(in srgb, var(--ink-invert) 15%, transparent);
}
.footer__cta-eyebrow { color: color-mix(in srgb, var(--ink-invert) 55%, transparent); }
.footer__email {
  display: inline-block;
  margin-top: var(--space-s);
  font-family: var(--font-display);
  font-size: var(--step-4);
  line-height: 1.05;
  color: var(--ink-invert);
  word-break: break-word;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease);
}
.footer__email:hover, .footer__email:focus-visible { border-bottom-color: currentColor; }
.footer__policy { margin-top: var(--space-m); max-width: 46ch; color: color-mix(in srgb, var(--ink-invert) 68%, transparent); }
.footer__policy strong { color: var(--ink-invert); }
.footer__logo-link { display: inline-block; justify-self: center; align-self: center; }
.footer__logo { height: clamp(96px, 12vw, 150px); width: auto; }

/* Nav (Explore + Connect) hugs the left; logo is centred in the open space at right */
.footer-grid {
  display: grid;
  gap: var(--space-l) clamp(1.5rem, 5vw, 4rem);
  grid-template-columns: auto 1fr;
  align-items: start;
}
.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-l) clamp(1.5rem, 6vw, 5rem);
}
.footer__col h2 {
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--ink-invert) 62%, transparent);
  margin-bottom: var(--space-s);
  font-weight: 500;
}
.footer__col ul { list-style: none; padding: 0; display: grid; gap: 0.6rem; }
.footer__col a { opacity: 0.85; transition: opacity var(--dur-fast) var(--ease); }
.footer__col a:hover, .footer__col a:focus-visible { opacity: 1; }
/* Social icons (same marks as the header) */
.footer__socials { display: flex; align-items: center; gap: 1.1rem; margin-top: var(--space-m); }
.footer__socials a { display: inline-flex; opacity: 0.75; }
.footer__socials a:hover, .footer__socials a:focus-visible { opacity: 1; }
.footer__socials svg { width: 22px; height: 22px; }

/* Legal disclaimers */
.footer__legal {
  margin-top: clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
  padding-top: var(--space-l);
  border-top: 1px solid color-mix(in srgb, var(--ink-invert) 15%, transparent);
  display: grid; gap: var(--space-xs);
}
.footer__legal p { font-size: var(--step--1); line-height: 1.55; color: color-mix(in srgb, var(--ink-invert) 42%, transparent); max-width: 108ch; }

.footer__bottom {
  display: flex; flex-wrap: wrap; gap: var(--space-s);
  justify-content: space-between; align-items: center;
  margin-top: var(--space-l);
  padding-top: var(--space-m);
  border-top: 1px solid color-mix(in srgb, var(--ink-invert) 18%, transparent);
  font-size: var(--step--1);
  color: color-mix(in srgb, var(--ink-invert) 62%, transparent);
}
@media (max-width: 640px) {
  .footer__email { font-size: var(--step-2); }   /* not oversized on phones */
}
@media (max-width: 620px) {
  .footer__logo { height: clamp(96px, 24vw, 135px); }
}
@media (max-width: 560px) { .footer-nav { grid-template-columns: 1fr; gap: var(--space-l); } }

/* Back-to-top button - site style (paper circle, ink chevron) */
.to-top {
  position: fixed;
  right: clamp(1rem, 2vw, 2rem);
  bottom: clamp(1rem, 2vw, 2rem);
  z-index: 60;
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  box-shadow: 0 4px 16px rgba(20, 17, 15, 0.12);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease),
              visibility var(--dur-fast), background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.to-top[data-visible="true"] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover, .to-top:focus-visible { background: var(--ink); color: var(--ink-invert); border-color: var(--ink); }
.to-top svg { width: 22px; height: 22px; }
@media (prefers-reduced-motion: reduce) {
  .to-top { transition: opacity var(--dur-fast) var(--ease), visibility var(--dur-fast), background var(--dur-fast), color var(--dur-fast); transform: none; }
}

/* --------------------- Image windows / placeholders ------------ */
.img-window {
  position: relative;
  overflow: hidden;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
}
.img-window > img { width: 100%; height: 100%; object-fit: cover; }
.ratio-4-5 { aspect-ratio: 4 / 5; }
.ratio-3-4 { aspect-ratio: 3 / 4; }
.ratio-16-9 { aspect-ratio: 16 / 9; }

/* Monochrome image treatment; color eases in on hover */
.img-mono > img {
  filter: grayscale(100%) contrast(1.02);
  transition: filter var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.img-window:hover .img-mono > img,
.card:focus-within .img-mono > img { filter: grayscale(0%); }
@media (prefers-reduced-motion: reduce) {
  .img-mono > img { transition: none; }
}

/* ------------------------- Roster ------------------------------
   DESKTOP: a grid of vertical cards (portrait, name, professions, links).
   MOBILE (<=620px): an accordion - thumbnail + name + professions summary
   that taps open to reveal the full portrait + links. Enhanced by main.js;
   without JS every card is fully expanded. Mirrors the About team. */
.roster-grid {
  display: grid;
  gap: clamp(1.5rem, 1rem + 2.5vw, 3rem) clamp(1.25rem, 0.8rem + 2vw, 2.5rem);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15.5rem), 1fr));
}
.card { display: flex; flex-direction: column; }
.card__head { margin: 0; }
.card__summary {
  display: flex; align-items: center; gap: var(--space-s);
  width: 100%; padding: 0;
  background: none; border: 0; color: inherit; font: inherit;
  text-align: left; cursor: pointer;
}
.card__thumb {
  flex: 0 0 auto; width: 60px; height: 75px;
  overflow: hidden; background: var(--paper-deep);
}
.card__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__id { flex: 1 1 auto; min-width: 0; }
.card__chev {
  flex: 0 0 auto; display: inline-flex; color: var(--ink-muted);
  transition: transform var(--dur-fast) var(--ease);
}
.card__chev svg { width: 20px; height: 20px; }
.card.is-open .card__chev { transform: rotate(180deg); }

.card__media { margin-bottom: var(--space-s); }
.card__name {
  display: block;
  font-family: var(--font-display); font-size: var(--step-1);
  color: var(--ink); line-height: 1.1;
}
.card__disciplines {
  display: block;
  font-size: var(--step--1); color: var(--ink-muted);
  letter-spacing: 0.02em; margin-top: 0.35rem;
}
.card__disciplines .sep { color: var(--ink-faint); padding-inline: 0.15em; }
.card__bio { font-size: var(--step--1); color: var(--ink-soft); margin-top: 0.6rem; }
.card__links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; margin-top: 0.7rem; }
.card__link {
  font-size: var(--step--1); letter-spacing: 0.05em; color: var(--ink);
  display: inline-flex; align-items: center; gap: 0.35em;
}
.card__link .arrow { transition: transform var(--dur-fast) var(--ease); }
.card__link:hover .arrow, .card__link:focus-visible .arrow { transform: translate(2px, -2px); }
@media (prefers-reduced-motion: reduce) { .card__link .arrow { transition: none; } }
.card__status {
  align-self: flex-start; font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-muted);
  border: 1px solid var(--rule-strong); padding: 0.2rem 0.55rem; margin-top: 0.7rem;
}

/* Mobile: single-column accordion list. Collapse only when JS is active. */
@media (max-width: 620px) {
  .roster-grid { grid-template-columns: 1fr; gap: 0; }
  .card { border-top: 1px solid var(--rule); padding-block: var(--space-s); }
  html.js .card__detail { display: none; }
  html.js .card.is-open .card__detail { display: block; margin-top: var(--space-s); }
  html.js .card.is-open .card__thumb { display: none; } /* full portrait takes over */
  .card__media { max-width: 300px; margin-bottom: 0; }
}

/* Desktop: full vertical card, no accordion chrome. */
@media (min-width: 621px) {
  .card__head, .card__detail { display: contents; }
  .card__summary { order: 2; display: block; cursor: default; }
  .card__thumb, .card__chev { display: none; }
  .card__media { order: 1; }
  .card__bio { order: 3; }
  .card__links { order: 4; }
  .card__status { order: 5; }

  /* Colourise the portrait whenever the cursor is anywhere over the card -
     the image, name, professions, or the link below - so it holds while you
     move down to click. Middle Rocks roster only. */
  .roster-grid .card:hover .img-mono > img,
  .roster-grid .card:focus-within .img-mono > img { filter: grayscale(0%); }
}

/* ----------------------- Discipline filter (dropdown) ---------- */
.roster-filter {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  margin-bottom: var(--space-l);
  flex-wrap: wrap;
}
.roster-filter__label {
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.roster-filter__select {
  font-family: var(--font-sans);
  font-size: var(--step--1);
  color: var(--ink);
  background-color: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 0;
  padding: 0.6em 2.4em 0.6em 0.9em;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  /* chevron */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236f6862' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8em center;
  transition: border-color var(--dur-fast) var(--ease);
}
.roster-filter__select:hover { border-color: var(--ink); }
.roster-filter__select:focus-visible { outline: var(--focus); outline-offset: 2px; }

/* --------------------------- Team ------------------------------
   DESKTOP (>=600px): two square photo cards side by side - photo, name,
   role, and bio all shown. MOBILE (<600px): an accordion - thumbnail +
   name/role that taps open to reveal the photo + bio. main.js drives it;
   without JS everything shows. */
.team-grid { display: grid; gap: 0; }

.team-member { border-top: 1px solid var(--rule-strong); }
.team-member:first-child { border-top: 0; }
.team-member__head { margin: 0; }
.team-member__summary {
  display: flex; align-items: center; gap: var(--space-m);
  width: 100%; padding: var(--space-s) 0;
  background: none; border: 0; color: inherit; font: inherit;
  text-align: left; cursor: pointer;
}
.team-member__thumb {
  flex: 0 0 auto; width: clamp(84px, 20vw, 110px); aspect-ratio: 4 / 5;
  overflow: hidden; background: var(--paper-deep);
}
.team-member__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; display: block; }
.team-member__id { flex: 1 1 auto; min-width: 0; }
.team-member__name {
  display: block;
  font-family: var(--font-display); font-size: var(--step-2);
  line-height: 1.12; color: var(--ink);
}
.team-member__role {
  display: block; margin-top: 0.4rem;
  font-family: var(--font-sans); font-size: var(--step--1);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted);
}
.team-member__chev {
  flex: 0 0 auto; display: inline-flex; color: var(--ink-muted);
  transition: transform var(--dur-fast) var(--ease);
}
.team-member__chev svg { width: 24px; height: 24px; }
.team-member.is-open .team-member__chev { transform: rotate(180deg); }

.team-member__media .img-window { aspect-ratio: 4 / 5; }
.team-member__media .img-window img { object-position: center 20%; }
.team-member__bio { margin-top: var(--space-m); max-width: 60ch; color: var(--ink-soft); }
#corrine-ashley .team-member__thumb img,
#corrine-ashley .team-member__media .img-window img { object-position: center top; }

/* Mobile: accordion. Collapse the detail when JS is active; thumbnail hides on open. */
@media (max-width: 599px) {
  html.js .team-member__detail { display: none; }
  html.js .team-member.is-open .team-member__detail { display: block; margin-top: var(--space-m); }
  html.js .team-member.is-open .team-member__thumb { display: none; }
  .team-member__media .img-window { max-width: 320px; }
}

/* Desktop: two square cards side by side, everything shown (no accordion). */
@media (min-width: 600px) {
  .team-grid {
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.75rem, 1rem + 3vw, 4rem);
    align-items: start;
  }
  .team-member {
    border-top: 0;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas: "media" "id" "copy";
    row-gap: var(--space-m);
  }
  .team-member__head,
  .team-member__detail { display: contents; }
  .team-member__summary { grid-area: id; padding: 0; gap: 0; cursor: default; display: block; }
  .team-member__thumb,
  .team-member__chev { display: none; }
  .team-member__media { grid-area: media; }
  .team-member__media .img-window { aspect-ratio: 1 / 1; }   /* square on desktop */
  .team-member__copy { grid-area: copy; }
  .team-member__bio { margin-top: 0; }
}