/* ==============================================
   LAYOUT.CSS — Header, Nav, Grilles de page
   ============================================== */

/* Header */
header {
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
}
html.light-mode header,
body.light-mode header { 
    background: rgba(246, 248, 250, 0.85) !important;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 130px;
    position: relative;
}

/* Logo */
/*.logo { font-size: 2rem; font-weight: 900; letter-spacing: -1px; }*/
.logo {
    display: inline-block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}
.logo img {
    display: block;
    max-height: 130px;
    width: auto;
}

/* Liens nav */
.nav-links { list-style: none; display: flex; gap: 30px; }
.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--alpine-blue); }

/* Bouton thème */
#theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    width: 40px; height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-color);
    transition: var(--transition);
}
#theme-toggle:hover { border-color: var(--alpine-blue); }

/* Burger mobile */
.burger-menu { display: none; flex-direction: column; gap: 6px; cursor: pointer; z-index: 1001; }
.burger-menu span {
    width: 30px; height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* Grilles */
.split-layout, .hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.stats-grid, .obj-grid, .steps-grid, .team-grid { display: grid; gap: 2rem; margin-top: 2rem; }
.stats-grid  { grid-template-columns: repeat(3, 1fr); }
.obj-grid    { grid-template-columns: repeat(3, 1fr); }
.steps-grid  { grid-template-columns: repeat(4, 1fr); }
.team-grid   { grid-template-columns: 1fr 1fr; }

/* ---- Responsive ---- */
@media (max-width: 992px) {
    .split-layout, .hero-grid,
    .support-grid, .budget-layout,
    .rencontre-card, .team-grid { grid-template-columns: 1fr; }
    .stats-grid  { grid-template-columns: 1fr; }
    .steps-grid  { grid-template-columns: 1fr 1fr; }

    .burger-menu { display: flex; }

    .nav-links {
        position: absolute;
        top: 80px; left: -100%;
        flex-direction: column;
        background-color: var(--card-bg);
        width: 100%;
        text-align: center;
        padding: 2rem 0;
        box-shadow: var(--shadow);
        transition: left 0.4s ease;
        border-bottom: 2px solid var(--alpine-blue);
    }
    .nav-links.active { left: 0; }
    .nav-links li { margin: 15px 0; }
    .nav-links a  { font-size: 1.2rem; }
}

/* ===== FOOTER ===== */
footer {
    border-top: 1px solid var(--card-border);
    margin-top: 4rem;
    padding: 2rem 0;
    font-size: 0.85rem;
    opacity: 0.75;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover { color: var(--alpine-blue); }

@media (max-width: 768px) {
    .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
    .obj-grid { grid-template-columns: 1fr; }
}