/* ==========================================================================
   layout.css: the page skeleton
   Containers, sections, header, mobile menu, footer and the "Let's talk" tab.
   ========================================================================== */

/* ---------- "Skip to content" link: hidden until a keyboard user presses Tab ---------- */
.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  padding: var(--space-2) var(--space-3);
  background: var(--color-ink);
  color: var(--color-white);
  font-size: var(--text-sm);
  transform: translateY(-200%);
  transition: transform 0.2s;
}

.skip-link:focus { transform: none; }

/* ---------- Containers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: var(--container-narrow); }

/* ---------- Sections ---------- */
.section {
  position: relative;
  padding-block: var(--section-pad);
}

.section--mist  { background: var(--color-mist); }
.section--blush {
  background: var(--color-blush);
  --color-ink-soft: #4E5860;   /* darker grey text so it stays readable on blush */
}

.section__header {
  margin-bottom: var(--space-6);
  text-align: center;
}

/* ---------- Split: two columns that stack on phones ---------- */
.split {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--wide-left  { grid-template-columns: 1.2fr 0.8fr; }
  .split--wide-right { grid-template-columns: 0.8fr 1.2fr; }
  .split--reverse > :first-child { order: 2; }
}

.split > * { min-width: 0; }   /* long words shrink instead of pushing the other column */

/* ---------- Header ---------- */
/* Three columns on desktop: links | logo | button */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-height);
  background: var(--color-white);
  color: var(--color-ink);
  transition: background 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}

/* On pages that open with a full-screen photo, the header starts see-through */
.site-header--over-hero:not(.is-scrolled):not(.is-menu-open) {
  background: transparent;
  color: var(--color-white);
}

.site-header.is-scrolled {
  box-shadow: 0 1px 0 var(--color-line);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 100%;
}

/* Logo: spaced capitals, first letter in teal */
.logo {
  justify-self: center;
  display: grid;
  justify-items: center;
  line-height: 1;
  text-decoration: none;
}

.logo__name {
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

.logo__name::first-letter { color: var(--color-teal); }

.logo__sub {
  margin-top: 4px;
  font-size: 0.6rem;
  letter-spacing: 0.55em;
  text-transform: uppercase;
  opacity: 0.75;
}

.site-nav__list {
  display: flex;
  gap: var(--space-4);
}

.site-nav__link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--color-teal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease-out);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-header__cta { justify-self: end; }

.site-nav__toggle { display: none; }

/* Menu items that only appear in the phone menu (the button covers them on desktop) */
@media (min-width: 900px) {
  .site-nav__item--mobile { display: none; }
}

/* ---------- Mobile menu ---------- */
@media (max-width: 899px) {
  .site-header__inner { grid-template-columns: auto 1fr auto; }
  .logo { justify-self: start; grid-column: 1; grid-row: 1; justify-items: start; }
  .site-header .site-header__cta { display: none; }   /* beats .button in components.css */

  .site-nav { grid-column: 3; grid-row: 1; }

  .site-nav__toggle {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 0;
    background: none;
    color: inherit;
    cursor: pointer;
  }

  .site-nav__toggle-bar,
  .site-nav__toggle-bar::before,
  .site-nav__toggle-bar::after {
    display: block;
    width: 24px;
    height: 1.5px;
    background: currentColor;
    transition: transform 0.3s var(--ease-out), background 0.3s;
  }

  .site-nav__toggle-bar { position: relative; }
  .site-nav__toggle-bar::before,
  .site-nav__toggle-bar::after { content: ""; position: absolute; left: 0; }
  .site-nav__toggle-bar::before { top: -7px; }
  .site-nav__toggle-bar::after  { top: 7px; }

  .site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar { background: transparent; }
  .site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar::before { transform: translateY(7px) rotate(45deg); }
  .site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar::after  { transform: translateY(-7px) rotate(-45deg); }

  .site-nav__list {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-5) var(--gutter) var(--space-6);
    background: var(--color-white);
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.3s, transform 0.3s var(--ease-out), visibility 0.3s;
  }

  .site-nav__list.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__link { font-size: var(--text-lg); }
}

/* Pages without a hero photo need space under the fixed header */
.page-offset { padding-top: var(--header-height); }

/* ---------- "Feeling inspired? Let's talk" tab (follows you down the page) ---------- */
.talk-tab {
  position: fixed;
  left: 0;
  bottom: var(--space-5);
  z-index: 40;
  display: flex;
  align-items: stretch;
  background: var(--color-white);
  color: var(--color-teal-deep);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 0 0 1px var(--color-line);
  transition: transform 0.4s var(--ease-out);
}

.talk-tab__label { padding: 0.9rem 1.4rem; }

.talk-tab__arrow {
  display: grid;
  place-items: center;
  width: 3rem;
  border-left: 1px solid var(--color-line);
  transition: background 0.3s, color 0.3s;
}

.talk-tab:hover .talk-tab__arrow {
  background: var(--color-teal);
  color: var(--color-white);
}

/* Hidden while the contact section itself is on screen (set by js/main.js) */
.talk-tab.is-hidden { transform: translateX(-110%); }

@media (max-width: 599px) {
  .talk-tab { bottom: var(--space-3); }
  .talk-tab__label { padding: 0.8rem 1rem; }
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-sm);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 760px) {
  .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}

.site-footer .logo { justify-self: start; justify-items: start; }

.site-footer__about {
  max-width: 32ch;
  margin-top: var(--space-3);
  color: var(--color-ink-soft);
}

.site-footer__heading {
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}

.site-footer__links {
  display: grid;
  gap: var(--space-2);
}

.site-footer__links a {
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 0.3s;
}

.site-footer__links a:hover { color: var(--color-teal-deep); }

.site-footer__copy {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-faint);
}