/* ==========================================================================
   Chuk Yip Company — Shared Components
   header, nav (Services disclosure), buttons, footer, cards, steps, FAQ,
   CTA band, breadcrumbs, placeholder block, private-preview ribbon,
   mobile sticky CTA. Markup for header/footer is designed to be copied
   verbatim into every later-phase page.
   Requires tokens.css + base.css loaded first.
   ========================================================================== */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: 0.625rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: #3C382F;
  color: #FFFFFF;
}

.btn--outline {
  background: transparent;
  border-color: var(--color-text);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

/* Inverted button for dark bands (e.g. final CTA). */
.btn--inverted {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn--inverted:hover {
  background: var(--color-accent-on-dark);
  color: var(--color-text);
}

.btn--lg {
  min-height: 52px;
  padding-inline: 2rem;
  font-size: 1.0625rem;
}

/* Standalone accent link with arrow affordance (cards, "View All FAQs"). */
.link-arrow {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  font-weight: 600;
  text-decoration: none;
}

.link-arrow::after {
  content: "\2192"; /* → */
  color: var(--color-accent);
}

.link-arrow:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* --- Type details --- */
.eyebrow {
  margin: 0;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-strong);
}

/* --- Sections (shared shell; page files add layout) --- */
.section {
  padding-block: var(--space-section);
}

.section--alt {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
}

.section__head {
  margin-bottom: var(--space-4);
}

.section__head h2 {
  margin-bottom: var(--space-1);
}

.section__intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.section__cta {
  margin-top: var(--space-4);
}

.section__note {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Card grids --- */
.grid {
  display: grid;
  gap: var(--space-3);
}

/* Column count derives from --grid-min (page CSS may override per section). */
.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--grid-min, 16rem)), 1fr));
  padding: 0;
}

.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.section--alt .card {
  background: var(--color-bg);
}

.card__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-accent-strong);
}

.card__title {
  margin: 0;
  font-size: var(--text-lg);
}

.card__text {
  margin: 0;
  color: var(--color-text-muted);
}

.card__cta {
  margin: auto 0 0;
  padding-top: var(--space-1);
}

/* --- Steps (numbered process, always rendered as <ol class="steps">) --- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--grid-min, 11rem)), 1fr));
  gap: var(--space-3);
  padding: 0;
  list-style: none;
}

.steps__item {
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

.steps__num {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent-strong);
}

.steps__title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
}

.steps__item p {
  margin: 0;
  color: var(--color-text-muted);
}

/* --- FAQ (native details/summary, stable ids on <details>) --- */
.faq-list {
  display: grid;
  gap: var(--space-2);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  font-weight: 600;
  font-size: 1.0625rem;
  line-height: 1.4;
  list-style: none;
  border-radius: var(--radius-md);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--color-accent-strong);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item__body {
  padding: 0 var(--space-3) var(--space-3);
  color: var(--color-text-muted);
}

/* --- Final CTA band --- */
.cta-band {
  padding: clamp(2.5rem, 2rem + 2.5vw, 4.5rem) clamp(1.25rem, 1rem + 2vw, 3rem);
  background: var(--color-text);
  color: #F3EFE8;
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-band h2 {
  color: #FAF8F5;
}

.cta-band p {
  margin-inline: auto;
}

.cta-band__email {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.cta-band__email a {
  color: var(--color-accent-on-dark);
}

.cta-band__email a:hover {
  color: #FAF8F5;
}

.cta-band__note {
  font-size: var(--text-sm);
  color: #B9B2A6;
}

/* --- Breadcrumbs (all non-home pages; defined here for reuse) --- */
.breadcrumbs {
  padding-block: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 0.5em;
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
  text-decoration: none;
}

/* --- Placeholder block (OWNER INPUT REQUIRED; never ships to public) --- */
.placeholder {
  margin: 0;
  background: var(--color-surface);
  border: 1px dashed var(--color-accent);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.placeholder img {
  width: 100%;
  height: auto;
}

.placeholder__caption {
  padding: var(--space-1) var(--space-2);
  border-top: 1px dashed var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* --- Private-preview ribbon (every page: <body class="private-preview">) --- */
body.private-preview::after {
  content: "PRIVATE LOCAL PREVIEW — DRAFT";
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: var(--z-ribbon);
  padding: 4px 12px;
  background: rgb(35 33 30 / 0.85);
  color: #FAF8F5;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 999px;
  pointer-events: none;
}

@media print {
  body.private-preview::after {
    display: none;
  }
}

/* ==========================================================================
   Shared header + primary navigation
   Degradation contract: .submenu and .site-nav are VISIBLE by default;
   only when the inline script has set <html class="js"> do they become
   collapsible. Without JS every route stays reachable.
   ========================================================================== */

.skip-link {
  /* defined in base.css; repeated here only as a documentation anchor */
}

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1) var(--space-2);
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  min-height: 44px;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.brand::before {
  content: "";
  width: 10px;
  height: 10px;
  border: 1px solid var(--color-accent);
  transform: rotate(45deg);
}

/* Hamburger toggle — mobile only. */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-surface);
}

.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
}

.nav-toggle__icon span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Nav panel — mobile layout first. */
.site-nav {
  flex: 1 1 100%;
  padding-block: var(--space-1);
  border-top: 1px solid var(--color-border);
}

html.js .site-nav {
  display: none;
}

html.js .site-nav.is-open {
  display: block;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 0.5em;
  width: 100%;
  min-height: 44px;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  text-align: left;
}

.nav__link:hover {
  background: var(--color-accent-soft);
  color: var(--color-text);
}

.nav__chevron {
  flex: none;
}

.nav__sub-toggle[aria-expanded="true"] .nav__chevron {
  transform: rotate(180deg);
}

/* Services submenu — expanded static list by default (no-JS fallback). */
.submenu {
  margin: 0 0 var(--space-1);
  padding: 0 0 0 var(--space-2);
  list-style: none;
  border-left: 1px solid var(--color-border);
  margin-left: 0.75rem;
}

html.js .submenu {
  display: none;
}

html.js .nav__item--has-sub.is-open > .submenu {
  display: block;
}

.submenu__link {
  display: block;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
}

.submenu__link:hover {
  background: var(--color-accent-soft);
}

.header-cta {
  width: 100%;
  margin-top: var(--space-1);
}

/* Desktop navigation (≥1024px). */
@media (min-width: 64em) {
  .nav-toggle {
    display: none;
  }

  .site-header__inner {
    flex-wrap: nowrap;
  }

  .site-nav,
  html.js .site-nav {
    display: flex;
    flex: 0 1 auto;
    align-items: center;
    gap: var(--space-2);
    padding-block: 0;
    border-top: 0;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: 2px;
  }

  .nav__link {
    width: auto;
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
  }

  .nav__item--has-sub {
    position: relative;
  }

  .submenu,
  html.js .submenu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    z-index: var(--z-header-submenu);
    min-width: 19rem;
    margin: 0;
    padding: var(--space-1);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
  }

  html.js .submenu {
    display: none;
  }

  html.js .nav__item--has-sub.is-open > .submenu {
    display: block;
  }

  .submenu__link {
    font-size: 0.95rem;
    white-space: nowrap;
  }

  .header-cta {
    width: auto;
    margin-top: 0;
    white-space: nowrap;
  }
}

/* ==========================================================================
   Mobile sticky "Request a Quote" bar
   Present on non-RFQ pages; suppressed by body[data-sticky-cta="off"].
   Body padding keeps it from covering page content or form controls.
   ========================================================================== */
.sticky-cta {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: var(--z-sticky-cta);
  padding: var(--space-1) var(--gutter) calc(var(--space-1) + env(safe-area-inset-bottom, 0px));
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.sticky-cta__link {
  width: 100%;
}

@media (max-width: 63.98em) {
  body:not([data-sticky-cta="off"]) {
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
  }
}

@media (min-width: 64em) {
  .sticky-cta {
    display: none;
  }
}

body[data-sticky-cta="off"] .sticky-cta {
  display: none;
}

/* ==========================================================================
   Shared footer (four columns)
   ========================================================================== */
.site-footer {
  padding-block: var(--space-6) var(--space-4);
  background: var(--color-text);
  color: #E8E4DD;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
  gap: var(--space-4);
}

.site-footer__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-on-dark);
}

.site-footer__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__list a {
  display: inline-block;
  padding-block: 0.4rem;
  color: inherit;
  text-decoration-color: rgb(250 248 245 / 0.4);
}

.site-footer__list a:hover {
  color: #FFFFFF;
}

.site-footer__entity {
  margin-bottom: var(--space-1);
  font-weight: 600;
}

.site-footer__col p {
  font-size: var(--text-sm);
}

.site-footer__col p + p {
  margin-top: var(--space-1);
}

.site-footer__col a {
  color: inherit;
}

.site-footer__note {
  margin-top: var(--space-4);
  padding-top: var(--space-2);
  border-top: 1px solid rgb(250 248 245 / 0.15);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: #B9B2A6;
}