/* Shared PosterPeer brand header — landing page + staff area */

.site-brand-app {
  /* PosterPeer design tokens */
  --ps-navy: #002147;
  --ps-text: #0b1f33;
  --ps-muted: #5b6775;
  --ps-accent: #004f71;
  --ps-accent-soft: #e8f2f5;
  --ps-accent-dark: #004f71;
  --ps-burgundy: #c5003e;
  --ps-burgundy-soft: #f8e5ec;
  --ps-surface: #ffffff;
  --ps-surface-soft: #f4f7fa;
  --ps-border: #d8e0ea;

  /* University of Edinburgh palette — shared across public pages */
  --uoe-navy: var(--ps-navy);
  --uoe-muted-blue: var(--ps-accent-dark);
  --uoe-burgundy: var(--ps-burgundy);
  --uoe-spruce: var(--ps-text);
  --navy: var(--ps-navy);
  --navy-hover: var(--ps-accent-dark);
  --link-accent: var(--ps-accent);
  --text-body: var(--ps-text);
  --muted: var(--ps-muted);
  --border: var(--ps-border);
  --surface: var(--ps-surface);
  --landing-max: 1280px;
  --landing-pad: 16px;
}

@media (min-width: 768px) {
  .site-brand-app {
    --landing-pad: 24px;
  }
}

@media (min-width: 1024px) {
  .site-brand-app {
    --landing-pad: 32px;
  }
}

/* Shared site content width — homepage, collection pages, header */
.landing-container,
.site-container {
  width: 100%;
  max-width: var(--landing-max);
  margin-inline: auto;
  padding-inline: var(--landing-pad);
}

.site-brand-app .site-header--landing {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 50;
  /* viewport-fit=cover: keep sticky chrome clear of notch / home indicator */
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}

.site-brand-app .site-header--landing .header-inner {
  align-items: flex-start;
  padding-block: 0.85rem 0.75rem;
  gap: 1rem;
}

.site-brand-app .header-landing-nav {
  margin-left: auto;
}

.site-brand-app .header-nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.75rem 2rem;
}

.site-brand-app .logo--landing-brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  flex-wrap: nowrap;
  min-width: 0;
  max-width: 100%;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--navy);
  text-decoration: none;
  border-radius: 4px;
}

.site-brand-app .site-logo--landing {
  display: block;
  height: 52px;
  width: auto;
  max-width: min(280px, 50vw);
  max-height: 52px;
  object-fit: contain;
  object-position: left center;
  flex-shrink: 0;
}

/* PosterPeer wordmark — navy Poster + accent Peer */
.site-brand-app .brand-wordmark {
  display: inline-flex;
  align-items: baseline;
  line-height: 1.1;
  white-space: nowrap;
  letter-spacing: -0.025em;
  font-size: clamp(1.6rem, 2vw, 2.25rem);
  flex-shrink: 1;
  min-width: 0;
}

.site-brand-app .logo--landing-brand .brand-wordmark {
  margin-left: 1.5rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border);
}

.site-brand-app .brand-poster {
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.03em;
}

.site-brand-app .brand-peer {
  font-weight: 700;
  color: var(--ps-accent);
  letter-spacing: -0.03em;
  position: relative;
}

.site-brand-app .logo--landing-brand:hover .brand-peer::after,
.site-brand-app .logo--landing-brand:focus-visible .brand-peer::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.12em;
  height: 2px;
  background: var(--ps-accent);
  border-radius: 999px;
}

.site-brand-app .logo--landing-brand:focus-visible {
  outline: 3px solid var(--ps-accent-soft);
  outline-offset: 4px;
}

.site-brand-app .logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--navy) 0%, #2a5080 100%);
  border: 2px solid var(--navy);
  flex-shrink: 0;
}

.site-brand-app .logo-text {
  line-height: 1.2;
}

.site-brand-app .header-nav-links a {
  color: var(--text-body);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
}

.site-brand-app .header-nav-links a:hover,
.site-brand-app .header-nav-links a:focus {
  color: var(--navy);
}

.site-brand-app .header-nav-links a.is-active {
  color: var(--navy);
  border-bottom-color: var(--ps-accent);
}

.site-brand-app .site-header--nav-inactive .header-nav-links {
  opacity: 0.55;
}

.site-brand-app .header-nav-links__inactive {
  color: var(--text-muted, #64748b);
  font-weight: 500;
  font-size: 0.95rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  cursor: default;
  user-select: none;
}

.site-brand-app .site-header--nav-inactive .logo--landing-brand {
  cursor: default;
  pointer-events: none;
}

.site-brand-app .nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  flex-shrink: 0;
}

.site-brand-app .nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-brand-app .nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-brand-app .nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-brand-app .nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-brand-app .mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 0.5rem var(--landing-pad) 1rem;
  box-shadow: 0 12px 24px rgba(0, 31, 63, 0.08);
}

.site-brand-app .mobile-nav:not([hidden]) {
  display: flex;
}

.site-brand-app .mobile-nav a {
  display: block;
  padding: 0.85rem 0.5rem;
  min-height: 44px;
  color: var(--text-body);
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.site-brand-app .mobile-nav a:last-child {
  border-bottom: none;
}

.site-brand-app .mobile-nav a.is-active {
  color: var(--navy);
  font-weight: 700;
}

.site-brand-app .mobile-nav a:hover,
.site-brand-app .mobile-nav a:focus {
  color: var(--navy);
}

.site-brand-app a:focus-visible,
.site-brand-app button:focus-visible {
  outline: 3px solid var(--navy);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (max-width: 767px) {
  .site-brand-app .site-header--landing .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding-block: 0.6rem;
  }

  .site-brand-app .header-landing-nav {
    display: none;
  }

  .site-brand-app .nav-toggle {
    display: flex;
  }

  .site-brand-app .site-logo--landing {
    height: 38px;
    max-width: min(200px, 48vw);
  }

  .site-brand-app .logo--landing-brand .brand-wordmark {
    margin-left: 1rem;
    padding-left: 1rem;
    font-size: clamp(1.15rem, 4vw, 1.35rem);
  }
}

@media (max-width: 480px) {
  .site-brand-app .site-logo--landing {
    height: 32px;
    max-width: 38vw;
  }

  .site-brand-app .logo--landing-brand .brand-wordmark {
    margin-left: 0.85rem;
    padding-left: 0.85rem;
    font-size: clamp(1rem, 3.5vw, 1.15rem);
  }
}

@media (min-width: 768px) {
  .site-brand-app .mobile-nav {
    display: none !important;
  }
}

/* Public footer — homepage, collections, search, poster viewer */
.site-brand-app .site-footer--public {
  background: #ffffff;
  border-top: 1px solid #d8dee6;
  padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px));
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  margin-top: 56px;
  color: #333f48;
  font-size: 0.9rem;
}

.site-brand-app .site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.site-brand-app .site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.site-brand-app .site-footer__title {
  margin: 0;
  color: #041e42;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.3;
}

.site-brand-app .site-footer__title .brand-wordmark {
  font-size: inherit;
  letter-spacing: -0.02em;
}

.site-brand-app .site-footer__subtitle {
  margin: 0;
  color: #333f48;
  font-size: 0.9rem;
  line-height: 1.45;
}

.site-brand-app .site-footer__actions {
  flex-shrink: 0;
  margin-left: auto;
}

.site-brand-app .site-footer__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  background: #041e42;
  color: #ffffff;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}

.site-brand-app .site-footer__button:hover,
.site-brand-app .site-footer__button:focus {
  background: var(--ps-accent);
  color: #ffffff;
}

@media (max-width: 767px) {
  .site-brand-app .site-footer--public {
    padding: 32px 0 calc(32px + env(safe-area-inset-bottom, 0px));
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
    margin-top: 40px;
  }

  .site-brand-app .site-footer__inner {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 18px;
  }

  .site-brand-app .site-footer__brand {
    align-items: center;
    width: 100%;
    max-width: 22rem;
    gap: 6px;
  }

  .site-brand-app .site-footer__title,
  .site-brand-app .site-footer__subtitle {
    text-align: center;
  }

  .site-brand-app .site-footer__title .brand-wordmark {
    justify-content: center;
  }

  .site-brand-app .site-footer__actions {
    margin-left: 0;
    width: auto;
    max-width: none;
    display: flex;
    justify-content: center;
  }

  .site-brand-app .site-footer__button {
    width: auto;
  }
}