/* Page d'accueil */
.gab-hero {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: var(--gab-space-3);
  max-width: 560px;
  margin: var(--gab-space-5) auto;
  padding: var(--gab-space-4);
}

.gab-hero h1 {
  margin: 0;
  font-size: 1.75rem;
  color: var(--md-sys-color-on-surface);
}

.gab-hero__lead {
  margin: 0;
  color: var(--md-sys-color-on-surface-variant);
}

/* Installation PWA (bas de page d'accueil) */
.gab-install {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: var(--gab-space-2);
  max-width: 480px;
  margin: 0 auto var(--gab-space-5);
  padding: var(--gab-space-4);
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.gab-install__title {
  margin: 0;
  font-size: 1.1rem;
  color: var(--md-sys-color-on-surface);
}

.gab-install__lead,
.gab-install__hint {
  margin: 0;
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
}

.gab-install__inline-icon {
  font-size: 1.1em;
  vertical-align: middle;
}

/* Bandeau tricolore du drapeau gabonais, fixé en haut de la fenêtre */
.gab-flag-stripe {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--gab-topbar-stripe-height);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  z-index: 1100;
}

.gab-flag-stripe span:nth-child(1) { background-color: var(--color-primary); }
.gab-flag-stripe span:nth-child(2) { background-color: var(--color-secondary); }
.gab-flag-stripe span:nth-child(3) { background-color: var(--color-tertiary); }

/* Barre de navigation MD3 */
.gab-topbar {
  position: fixed;
  top: var(--gab-topbar-stripe-height);
  left: 0;
  right: 0;
  height: var(--gab-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gab-space-3);
  padding: 0 var(--gab-space-4);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  box-shadow: 0 1px 3px rgb(0 0 0 / 12%);
  z-index: 1000;
}

.gab-topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--gab-space-2);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gab-topbar__brand-mark {
  display: inline-flex;
  width: 28px;
  height: 20px;
  border-radius: 4px;
  overflow: hidden;
  flex: none;
  box-shadow: 0 0 0 1px var(--md-sys-color-outline-variant);
}

.gab-topbar__brand-mark span { flex: 1; }
.gab-topbar__brand-mark span:nth-child(1) { background-color: var(--color-primary); }
.gab-topbar__brand-mark span:nth-child(2) { background-color: var(--color-secondary); }
.gab-topbar__brand-mark span:nth-child(3) { background-color: var(--color-tertiary); }

.gab-topbar__nav {
  display: flex;
  align-items: center;
  gap: var(--gab-space-2);
}

/* Structure de page */
.gab-page {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding-top: calc(var(--gab-topbar-stripe-height) + var(--gab-header-height));
}

.gab-main {
  width: 100%;
  max-width: var(--gab-max-width);
  margin-inline: auto;
  padding: var(--gab-space-4) var(--gab-space-3);
  display: grid;
  gap: var(--gab-space-4);
}

/* Footer */
.gab-footer {
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  padding: var(--gab-space-4) var(--gab-space-3);
  text-align: center;
  font-size: 0.85rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

/* Zone flash messages */
.gab-flash-region {
  position: fixed;
  top: calc(var(--gab-topbar-stripe-height) + var(--gab-header-height) + var(--gab-space-2));
  left: 50%;
  transform: translateX(-50%);
  width: min(560px, calc(100% - var(--gab-space-3) * 2));
  display: grid;
  gap: var(--gab-space-2);
  z-index: 1300;
  pointer-events: none;
}

.gab-banner {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--gab-space-2);
  padding: var(--gab-space-2) var(--gab-space-3);
  border-radius: var(--gab-radius-sm);
  box-shadow: 0 2px 6px rgb(0 0 0 / 18%);
  font-size: 0.9rem;
  animation: gab-banner-in 200ms ease-out;
}

.gab-banner__message { flex: 1; }

.gab-banner--success {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.gab-banner--error {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.gab-banner--warning {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.gab-banner--info {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
}

@keyframes gab-banner-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive mobile-first */
@media (max-width: 600px) {
  .gab-topbar { padding: 0 var(--gab-space-3); }
  .gab-topbar__brand { font-size: 0.95rem; }
  .gab-main { padding: var(--gab-space-3) var(--gab-space-2); }
}