/* HEADER */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(135deg, #111827, #1f2937);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(250, 204, 21, 0.55);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.65);
}

.nav-container {
    display: flex;
    align-items: center;          /* 🔑 centre verticalement logo + menu */
    justify-content: space-between;
    gap: 0.75rem;

}

/* LOGO */
.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    margin-left: 0;
}

.logo img {
    width: 150px;
    height: 150px;
    max-width: 220px;
    max-height: 220px;
    object-fit: contain;
}

.logo-text {
    display: none;
    flex-direction: column;
    align-items: center; /* ← important */
    gap: 0.15rem;
    text-align: center;
}

.logo-title {
    font-weight: 900; /* 1200 n’existe pas réellement en Roboto */
    font-size: 1.05rem;
    color: #f9fafb;
    letter-spacing: 0.04rem;
    line-height: 1.1;
}

.logo-subtitle {
    font-size: 0.85rem;
    color: #9ca3af;
    line-height: 1.9;
}

/* NAVIGATION */
.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.1rem;
    list-style: none;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
    text-decoration: none;
    font-size: 0.95rem;
    color: #e5e7eb;
    padding: 0.35rem 0.95rem;
    border-radius: var(--radius-pill);
    transition:
        color var(--transition),
        background-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition);
}

.nav-links a:hover {
    color: var(--color-primary-soft);
    transform: translateY(-1px);
}

.nav-links a.active-tab {
    background: #f9fafb;
    color: #020617;
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.65);
    border-bottom: 2px solid #facc15;
}

/* MENU BURGER */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(148, 163, 184, 0.7);
    border-radius: 999px;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 70%;
    margin: 0 auto;
    background-color: #e5e7eb;
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.logo-flash-content {
    text-align: center;
    animation: logoFlashZoom 0.3s ease-out;
}

.logo-flash-content img {
    /* 500px x 500px, avec limite sur petits écrans */
    width: min(500px, 80vw);
    height: min(500px, 80vw);
    object-fit: contain;
    filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.9));
}

.logo-flash-text {
    margin-top: 0.75rem;
    font-family: inherit;         			 	/* même police que le reste du site */
    font-weight: 700;              				/* comme le titre GSSIEP du header */
    text-transform: uppercase;     				/* idem */
    letter-spacing: 0.22em;        				/* proche de .logo-title, mais lisible en grand */ /* Taille adaptative : plus grand sur grand écran, raisonnable sur mobile */
    font-size: clamp(1.6rem, 3vw, 2.8rem);		/* plus grand pour le flash */
    color: var(--color-text);      				/* même couleur que ton texte principal */
}

/* --- Amélioration accessibilité et contraste du bouton burger --- */
.header .nav-toggle {
  width: 44px;
  height: 44px;
}
.header .nav-toggle span {
  background-color: #f9fafb; /* meilleur contraste sur fond sombre */
}

/* --- Sécurité : logo toujours visible même si contraintes extrêmes --- */
.header .logo img {
  min-width: 60px;
}

/* --- Légère optimisation du stacking context pour éviter conflits --- */
.header {
  position: sticky;
  z-index: 1200;
}

/* --- Accessibilité : préparation pour aria-label du burger (si HTML mis à jour) --- */
.header .nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}
.header .nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.header .nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}


.nav-toggle{display:none;}