/* ==========================================================================
   VHSD Solutions — site layout and components.
   Built against tokens.css; import tokens.css first, then this file.
   ========================================================================== */

/* ---- self-hosted IBM Plex — no Google Fonts hotlink ----------------------- */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans Condensed";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-condensed-600.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-400.woff2") format("woff2");
}

/* ---- skip link ------------------------------------------------------------ */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--surface);
  color: var(--text);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border-strong);
}
.skip-link:focus {
  left: var(--s-4);
  top: var(--s-4);
}

/* ---- layout shell ---------------------------------------------------------- */
.wrap {
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: var(--s-5);
}

header.site {
  position: relative;
  border-bottom: 1px solid var(--border);
  padding-block: var(--s-4);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
}
header.site img.logo {
  height: 2.25rem;
  width: auto;
  vertical-align: middle;
}
header.site nav {
  display: flex;
  gap: var(--s-6);
}
header.site nav a {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
}
header.site nav a:hover { color: var(--accent-text); }

/* ---- mobile nav toggle (hidden above the breakpoint, see below) ------------ */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--text);
}
.nav-toggle-icon {
  position: relative;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

main { display: block; }

section {
  padding-block: var(--s-9);
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

/* ---- eyebrow ---------------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--accent-text);
  display: block;
  margin-bottom: var(--s-3);
}

/* ---- hero -------------------------------------------------------------------- */
.hero h1 {
  font-size: var(--t-3xl);
  line-height: var(--lh-tight);
  max-width: 22ch;
  margin-bottom: var(--s-5);
}
.hero .lead {
  font-size: var(--t-md);
  color: var(--text-muted);
  margin-bottom: var(--s-7);
}
.hero .ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-5);
}
.hero .cta-note {
  color: var(--text-faint);
  font-size: var(--t-sm);
  max-width: 42ch;
  margin-top: var(--s-3);
}

/* ---- copyable contact address ------------------------------------------------
   The mailto: button is a dead end for anyone without a mail client bound, so
   the address also sits on the page as plain, selectable text. The Copy button
   is revealed by copy-email.js only where the Clipboard API exists. */
.email-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
  margin-top: var(--s-4);
}
.email-chip {
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  user-select: all;
}
.copy-btn {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.55rem 0.75rem;
  cursor: pointer;
}
.copy-btn:hover { border-color: var(--accent-text); color: var(--accent-text); }
.copy-btn.is-copied { border-color: var(--good); color: var(--good); }
/* ---- buttons ----------------------------------------------------------------- */
.btn {
  display: inline-block;
  background: var(--action-bg);
  color: var(--action-fg);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1;
}
.btn:hover { background: var(--action-bg-hover); }
.btn:visited { color: var(--action-fg); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1;
}
.btn-secondary:hover { border-color: var(--accent-text); color: var(--accent-text); }

/* ---- panels grid (What we do) -------------------------------------------------- */
.panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: var(--rule);
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: var(--s-7);
}
.panel {
  background: var(--surface);
  padding: var(--s-6);
}
.panel h3 { margin-bottom: var(--s-3); }
.panel p { color: var(--text-muted); }

/* ---- engagements: same grid as the specialties, plus a closing note -------- */
.engagement-note {
  margin-top: var(--s-6);
  color: var(--text-muted);
}

/* ---- positioning pull-quote: the one 2px ember rule -------------------------- */
.positioning {
  border-top: var(--rule-strong) solid var(--accent);
  padding-top: var(--s-6);
  margin-top: var(--s-8);
}
.positioning p {
  font-family: var(--font-display);
  font-size: var(--t-lg);
  font-weight: 600;
  line-height: var(--lh-head);
  color: var(--text);
  max-width: 48ch;
}

/* ---- who I am ------------------------------------------------------------------ */
.bio p { color: var(--text-muted); margin-bottom: var(--s-5); }
.bio p:last-child { margin-bottom: 0; }

.roles {
  margin-top: var(--s-7);
  border-top: 1px solid var(--border);
}
.role {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: var(--s-5);
  padding-block: var(--s-4);
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}
.role .dates {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.role .role-detail strong { font-weight: 500; color: var(--text); }
.role .role-detail span { color: var(--text-muted); }

/* ---- contact -------------------------------------------------------------------- */
.contact p { color: var(--text-muted); margin-bottom: var(--s-6); }

/* ---- about page: bio header with headshot -------------------------------------- */
.bio-header {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: var(--s-7);
  align-items: start;
}
.bio-header img.headshot {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ---- about page: keystone name animation (issue #47) ----------------------------
   The arch's piers, voussoir polygons, and keystone position are all derived
   from vhsd-primary.svg's own wedge path (same coordinates, unscaled), so
   .keystone-wedge never has to move or resize to land on the logo — it's
   rendered once, at the logo's real wedge position, and simply never fades. */
.keystone-story {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
}
.keystone-story p {
  color: var(--text-muted);
  max-width: var(--measure);
  margin-top: var(--s-5);
  align-self: flex-start;
}

.keystone-demo {
  position: relative;
  display: block;
  width: 100%;
  max-width: 26rem;
  padding: 0;
  margin: 0;
  background: none;
  border: none;
  cursor: pointer;
}
.keystone-demo:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}
.keystone-lockup { display: block; width: 100%; height: auto; }

.keystone-pier {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 1.5;
}
.keystone-guide {
  fill: none;
  stroke: var(--text-faint);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
}
.keystone-stone {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 1.5;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: bottom;
}
.keystone-bridge { opacity: 0; }

.keystone-wedge {
  fill: var(--accent);
  opacity: 1;
  transform-box: fill-box;
  transform-origin: bottom;
}
.keystone-lettering { opacity: 1; }

.keystone-demo.is-playing .keystone-bridge {
  animation: keystone-fade-in 0.15s ease forwards,
             keystone-fade-out 0.35s ease 1.83s forwards;
}
.keystone-demo.is-playing .keystone-guide {
  animation: keystone-fade-out 0.2s ease 1.0s forwards;
}
.keystone-demo.is-playing .keystone-stone {
  animation: keystone-stone-in 0.18s ease-out forwards;
  animation-delay: calc(0.2s + var(--i) * 0.09s);
}
.keystone-demo.is-playing .keystone-wedge {
  animation: keystone-fade-out 0.15s ease forwards,
             keystone-wedge-in 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) 1.08s forwards;
}
.keystone-demo.is-playing .keystone-lettering {
  animation: keystone-fade-out 0.15s ease forwards,
             keystone-fade-in 0.35s ease 1.83s forwards;
}

@keyframes keystone-fade-in  { from { opacity: 0; } to { opacity: 1; } }
@keyframes keystone-fade-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes keystone-stone-in {
  from { opacity: 0; transform: scaleY(0.6); }
  to   { opacity: 1; transform: none; }
}
@keyframes keystone-wedge-in {
  0%   { opacity: 0; transform: scaleY(0.3); }
  60%  { opacity: 1; transform: scaleY(1.08); }
  100% { opacity: 1; transform: scaleY(1); }
}

.keystone-play-icon {
  position: absolute;
  bottom: var(--s-3);
  right: var(--s-3);
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
}
.keystone-play-icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 54%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 0.4rem 0 0.4rem 0.65rem;
  border-color: transparent transparent transparent var(--accent-text);
}
.keystone-demo.is-playing .keystone-play-icon { opacity: 0; }

.keystone-caption {
  color: var(--text-faint);
  font-size: var(--t-sm);
}
.keystone-demo.is-playing + .keystone-caption { opacity: 0; }

/* ---- about page: beyond work (family photo + personal links) ------------------- */
.beyond-work {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: var(--s-7);
  align-items: start;
}
.beyond-work figure { margin: 0; }
.beyond-work img.family-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}
.beyond-work figcaption {
  color: var(--text-faint);
  font-size: var(--t-sm);
  margin-top: var(--s-3);
}
.personal-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.personal-links li {
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--border);
}
.personal-links li:first-child { padding-top: 0; }
.personal-links a { font-weight: 500; }
.personal-links span {
  display: block;
  color: var(--text-faint);
  font-size: var(--t-sm);
}

/* ---- footer ----------------------------------------------------------------------- */
footer.site {
  padding-block: var(--s-6);
}
footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-3);
  color: var(--text-faint);
  font-size: var(--t-sm);
}
footer.site a { color: var(--text-faint); }
footer.site nav { display: flex; gap: var(--s-5); }

/* ---- legal / prose pages ------------------------------------------------------------ */
.legal h1 { margin-bottom: var(--s-3); }
.legal .updated {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: var(--s-7);
  display: block;
}
.legal h2 {
  font-size: var(--t-lg);
  margin-top: var(--s-8);
  margin-bottom: var(--s-4);
}
.legal p, .legal li { color: var(--text-muted); margin-bottom: var(--s-4); }
.legal ul { padding-left: var(--s-5); margin: 0 0 var(--s-4); }

/* ---- 404 -------------------------------------------------------------------------- */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.error-page h1 { margin-bottom: var(--s-4); }
.error-page p { color: var(--text-muted); margin-bottom: var(--s-6); }

/* ---- consent banner ----------------------------------------------------------------- */
#consent-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}
#consent-banner .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding-block: var(--s-4);
}
#consent-banner p {
  margin: 0;
  font-size: var(--t-sm);
  color: var(--text-muted);
  max-width: 52ch;
}
#consent-banner .actions { display: flex; gap: var(--s-2); flex-shrink: 0; }
#consent-banner button {
  font-family: var(--font-body);
  font-size: var(--t-sm);
  font-weight: 500;
  border-radius: var(--radius);
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  line-height: 1;
}
#consent-banner .accept { background: var(--action-bg); color: var(--action-fg); border: 1px solid transparent; }
#consent-banner .accept:hover { background: var(--action-bg-hover); }
#consent-banner .decline { background: transparent; color: var(--text); border: 1px solid var(--border-strong); }
#consent-banner .decline:hover { border-color: var(--accent-text); color: var(--accent-text); }

/* ---- logo light/dark swap ------------------------------------------------------------ */
.logo-swap .dark-only { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-swap .light-only { display: none; }
  :root:not([data-theme="light"]) .logo-swap .dark-only { display: inline-block; }
}
:root[data-theme="dark"] .logo-swap .light-only { display: none; }
:root[data-theme="dark"] .logo-swap .dark-only { display: inline-block; }
:root[data-theme="light"] .logo-swap .light-only { display: inline-block; }
:root[data-theme="light"] .logo-swap .dark-only { display: none; }

/* ---- responsive ------------------------------------------------------------------- */
@media (max-width: 40rem) {
  .role { grid-template-columns: 1fr; gap: var(--s-2); }
  .hero h1 { font-size: var(--t-2xl); }
  .bio-header { grid-template-columns: 1fr; }
  .bio-header img.headshot { max-width: 12rem; }
  .beyond-work { grid-template-columns: 1fr; }
  .beyond-work img.family-photo { max-width: 16rem; }

  .nav-toggle { display: inline-flex; }

  header.site nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--s-4) var(--s-5);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  }
  header.site nav.open { display: flex; }
  header.site nav a {
    width: 100%;
    padding-block: var(--s-3);
    border-bottom: 1px solid var(--border);
  }
  header.site nav a:last-child { border-bottom: none; }
}