/*
 * CSECC theme — layout: header, navigation, main column, footer,
 * and the floating-molecule background layer.
 */

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

.page {
  position: relative;
  z-index: 0;
  isolation: isolate;       /* own stacking context: the molecule layer sits at the bottom of it */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.site-main { flex: 1; }

/* ---------- Molecule background ---------- */
.molecules {
  position: fixed;
  inset: 0;
  z-index: -1;              /* behind everything inside .page, above the page background */
  overflow: hidden;
  pointer-events: none;
}
/* Each molecule rises from below the window to above it (outer element),
   while swaying and turning gently (inner svg). Variables come from molecules.js. */
.molecule {
  position: absolute;
  left: var(--x, 50vw);
  top: 100vh;
  width: var(--size, 120px);
  height: var(--size, 120px);
  opacity: var(--molecule-opacity);
  animation: molecule-rise var(--dur, 80s) linear infinite;
  animation-delay: var(--delay, 0s);
  will-change: transform;
}
.molecule__shape {
  display: block;
  width: 100%;
  height: 100%;
  color: var(--molecule-ink);
  animation: molecule-sway var(--sway-dur, 9s) ease-in-out infinite alternate;
}
@keyframes molecule-rise {
  from { transform: translateY(0); }
  to   { transform: translateY(calc(-100vh - var(--size, 120px) * 1.6)); }
}
@keyframes molecule-sway {
  from { transform: translateX(calc(var(--sway, 20px) * -1)) rotate(calc(var(--rot, 0deg) - var(--spin, 12deg))); }
  to   { transform: translateX(var(--sway, 20px)) rotate(calc(var(--rot, 0deg) + var(--spin, 12deg))); }
}
@media (prefers-reduced-motion: reduce) {
  .molecule { animation: none; top: var(--y, 50vh); }
  .molecule__shape { animation: none; transform: rotate(var(--rot, 0deg)); }
}

/* ---------- Header ---------- */
.site-header {
  background: #fff;
  border-top: 5px solid var(--navy-800);
  box-shadow: 0 1px 0 var(--rule);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 5.5rem;
  padding-block: 0.9rem;
}

/* Branding block */
.site-branding {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}
.site-branding__logo { display: inline-flex; flex: none; line-height: 0; }
.site-branding__logo img { height: clamp(3rem, 2.2rem + 2.5vw, 4.25rem); width: auto; }
.site-branding__text { min-width: 0; }
.site-branding__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 0.85rem + 0.8vw, 1.4rem);
  line-height: 1.2;
  color: var(--navy-900);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-branding__name:hover { color: var(--blue-600); }
.site-branding__slogan {
  margin-top: 0.2rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--muted);
  max-width: 42ch;
}
@media (max-width: 40rem) {
  .site-branding__slogan { display: none; }
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.8rem;
  border: 1.5px solid var(--navy-800);
  border-radius: 999px;
  background: #fff;
  color: var(--navy-800);
  font: 600 0.85rem/1 var(--font-display);
  cursor: pointer;
}
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; }
.nav-toggle__bars i { display: block; width: 16px; height: 2px; background: currentColor; border-radius: 2px; transition: transform 0.2s, opacity 0.2s; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- Navigation bar ---------- */
.site-nav {
  background: var(--navy-800);
  color: #fff;
}
.site-nav__inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
}
.site-nav .block { margin: 0; }
.site-nav .block__title { display: none; }
.site-nav .menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}
.site-nav .menu-item { margin: 0; position: relative; }
.site-nav .menu-link {
  display: block;
  padding: 0.85rem 1rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  border-bottom: 3px solid transparent;
  transition: background-color 0.15s, border-color 0.15s;
}
.site-nav .menu-link:hover,
.site-nav .menu-link:focus-visible {
  background: var(--navy-700);
  color: #fff;
}
.site-nav .menu-item--active-trail > .menu-link,
.site-nav .menu-link.is-active {
  border-bottom-color: var(--honey-500);
  font-weight: 600;
}
.site-nav__secondary .menu-link { font-weight: 500; opacity: 0.85; }

/* Nested menus: simple dropdown on wide screens */
.site-nav .menu--sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 14rem;
  flex-direction: column;
  background: var(--navy-700);
  box-shadow: var(--shadow);
  z-index: 20;
}
.site-nav .menu-item:hover > .menu--sub,
.site-nav .menu-item:focus-within > .menu--sub { display: flex; }
.site-nav .menu--sub .menu-link { padding: 0.65rem 1rem; border-bottom: 0; }

/* Narrow screens: collapsible stack */
@media (max-width: 47.99rem) {
  .nav-toggle { display: inline-flex; }
  .site-nav { display: none; }
  .site-nav.is-open { display: block; }
  .site-nav__inner { flex-direction: column; gap: 0; padding-block: 0.4rem; }
  .site-nav .menu { flex-direction: column; }
  .site-nav .menu-link { padding: 0.8rem 0.25rem; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .site-nav .menu-item--active-trail > .menu-link,
  .site-nav .menu-link.is-active { border-bottom-color: rgba(255, 255, 255, 0.12); box-shadow: inset 4px 0 0 var(--honey-500); padding-left: 0.9rem; }
  .site-nav .menu--sub { display: flex; position: static; box-shadow: none; background: transparent; padding-left: 1rem; }
  .site-nav__secondary { border-top: 1px solid rgba(255, 255, 255, 0.2); }
}

/* ---------- Hero (optional region) ---------- */
.site-hero {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  color: #fff;
  padding-block: clamp(2rem, 5vw, 3.5rem);
}
.site-hero h1, .site-hero h2, .site-hero h3 { color: #fff; }
.site-hero a { color: var(--honey-300); }

/* ---------- Front-page slideshow ---------- */
.hero-slideshow {
  margin: 0 0 1.5rem;
  background: #fff;
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  overflow: hidden;
  outline-offset: 3px;
}
.hero-slideshow__track { position: relative; aspect-ratio: 16 / 9; max-height: 32rem; background: #fff; }
.hero-slideshow__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-slideshow__slide.is-active { opacity: 1; z-index: 1; }
.hero-slideshow__slide a { display: block; height: 100%; }
.hero-slideshow__slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;   /* graphical abstracts: never crop */
  border-radius: 0;
}
.hero-slideshow__bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 2.75rem;
  padding: 0.4rem 0.75rem;
  background: var(--navy-800);
  color: #fff;
  font: 500 0.85rem/1.35 var(--font-display);
}
.hero-slideshow__caption { flex: 1; min-width: 0; }
.hero-slideshow__caption:empty { display: none; }
.hero-slideshow__dots { display: flex; gap: 0.45rem; margin-left: auto; }
.hero-slideshow__dot {
  width: 0.6rem;
  height: 0.6rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
}
.hero-slideshow__dot.is-active { background: var(--honey-500); }
.hero-slideshow__btn {
  flex: none;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.hero-slideshow__btn:hover { background: rgba(255, 255, 255, 0.25); color: #fff; }
.hero-slideshow__caption:empty + .hero-slideshow__dots { margin-left: auto; }
@media (max-width: 40rem) {
  .hero-slideshow__bar { flex-wrap: wrap; justify-content: center; }
  .hero-slideshow__caption { flex-basis: 100%; text-align: center; order: -1; font-size: 0.8rem; }
}

/* ---------- Main ---------- */
.site-main { padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(2.5rem, 5vw, 4rem); }
.content-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: clamp(1.4rem, 3vw, 3rem) clamp(1.2rem, 4vw, 3.5rem) clamp(1.8rem, 4vw, 3.5rem);
  backdrop-filter: blur(2px);
}
.content-panel > .region > .block { margin-bottom: 1.5rem; }
.content-panel > .region > .block:last-child { margin-bottom: 0; }

.page-title {
  margin: 0 0 1.4rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.page-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 3.5rem;
  height: 3px;
  background: var(--honey-500);
}

/* Front page: give the intro a little more air */
.path-frontpage .page-title { font-size: clamp(2.1rem, 1.4rem + 2.6vw, 3.2rem); }
.path-frontpage .node--type-page .node__content { font-size: 1.125rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-800);
  color: rgba(255, 255, 255, 0.82);
  padding-block: 2.2rem 1.8rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--honey-300); }
.site-footer__blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 2rem;
  padding-bottom: 1.6rem;
  margin-bottom: 1.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}
.site-footer__blocks .block__title { color: #fff; font-size: 0.95rem; margin: 0 0 0.6rem; }
.site-footer__blocks .menu { list-style: none; margin: 0; padding: 0; }
.site-footer__blocks .menu-link { text-decoration: none; }
.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem 2rem;
}
.site-footer__name { color: #fff; font-weight: 600; font-size: 1rem; }
.site-footer__slogan { margin-top: 0.15rem; opacity: 0.75; max-width: 48ch; }
.site-footer__legal { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 0.3rem; }
.site-footer__login { font-size: 0.8rem; opacity: 0.6; text-decoration: none; }
.site-footer__login:hover { opacity: 1; }
.site-footer__legal .block { margin: 0; font-size: 0.8rem; opacity: 0.6; }
@media (max-width: 47.99rem) {
  .site-footer__meta { flex-direction: column; align-items: flex-start; }
  .site-footer__legal { text-align: left; align-items: flex-start; }
}

/* Search form, if the search blocks are kept in the navigation bar */
.site-nav .block-search-form-block { display: flex; align-items: center; padding-block: 0.45rem; }
.site-nav .block-search-form-block form { display: flex; align-items: center; gap: 0.4rem; }
.site-nav .block-search-form-block .form-item,
.site-nav .block-search-form-block .form-actions { margin: 0; }
.site-nav .block-search-form-block input[type="search"],
.site-nav .block-search-form-block input[type="text"] {
  width: 11rem;
  padding: 0.4rem 0.8rem;
  border: 0;
  border-radius: 999px;
  font-size: 0.9rem;
}
.site-nav .block-search-form-block input[type="submit"],
.site-nav .block-search-form-block button {
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
  background: var(--navy-700);
  border-color: var(--navy-700);
}