/* ==========================================================================
   LAYOUT — container, grids, sections, header, footer
   ========================================================================== */

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

/* ---------- Grids (mobile first: one column) ---------- */
.grid {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1040px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

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

.section--dark {
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-on-dark);
}

.section--dark p {
  color: var(--color-on-dark-muted);
}

.section--line {
  border-top: 1px solid var(--color-line);
}

/* Section heading block: eyebrow + title + intro */
.section-head {
  max-width: 720px;
  margin-bottom: var(--space-7);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head__intro {
  font-size: var(--text-lg);
  color: var(--color-ink);
  margin-bottom: 0;
}

.section--dark .section-head__intro {
  color: var(--color-on-dark-muted);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(253, 243, 238, 0.86);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  background: rgba(253, 243, 238, 0.95);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: 100%;
}

.site-header__logo img {
  height: 42px;
  width: auto;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ---------- Navigation ---------- */
.nav {
  display: none;
}

.nav__list {
  display: flex;
  gap: var(--space-5);
  list-style: none;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink);
}

.nav__link:hover {
  color: var(--color-accent-text);
  text-decoration: none;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  cursor: pointer;
}

.nav-toggle .icon {
  width: 20px;
  height: 20px;
}

.nav-toggle .icon--close { display: none; }
.nav-open .nav-toggle .icon--menu { display: none; }
.nav-open .nav-toggle .icon--close { display: block; }

/* Mobile menu panel */
.nav-open .nav {
  display: block;
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  padding: var(--space-5) var(--gutter) var(--space-6);
  box-shadow: var(--shadow);
}

.nav-open .nav__list {
  flex-direction: column;
  gap: var(--space-4);
}

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

/* Platform button is hidden in the header on very small screens (it sits in the mobile menu) */
.site-header__actions .btn {
  display: none;
}

.nav .nav__app {
  margin-top: var(--space-5);
}

@media (min-width: 560px) {
  .site-header__actions .btn { display: inline-flex; }
  .nav .nav__app { display: none; }
}

@media (min-width: 1000px) {
  .nav,
  .nav-open .nav {
    display: block;
    position: static;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }

  .nav-open .nav__list { flex-direction: row; gap: var(--space-5); }
  .nav-open .nav__link { font-size: var(--text-sm); }
  .nav-toggle { display: none; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-dark);
  color: var(--color-on-dark-muted);
  padding-block: var(--space-8) var(--space-6);
  font-size: var(--text-sm);
}

.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-dark-line);
}

.site-footer__brand img {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-3);
}

.site-footer__brand p {
  margin: 0;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  list-style: none;
  align-self: center;
}

.site-footer__links a {
  color: var(--color-on-dark);
}

.site-footer__disclaimer {
  max-width: 820px;
  margin: var(--space-5) 0 var(--space-3);
  font-size: var(--text-xs);
  line-height: 1.6;
}

.site-footer__copy {
  margin: 0;
  font-size: var(--text-xs);
}