/* --- STYLES DE LA NAVIGATION --- */

/* Décalage des ancres pour éviter qu'un titre soit caché */
section {
    scroll-margin-top: 132px;
}

/* Défilement fluide entre les ancres */
html {
    scroll-behavior: smooth;
}

/* Laisse de la place au menu du haut */
body {
    padding-top: 82px;
}

/* Header visuel avec image de fond */
header {
    text-align: center;
    padding: 48px 20px 60px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/background-degrade.jpg') center/cover;
    color: white;
}

header h1 {
    margin: 40px 0;
    font-size: 2.5rem;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Barre de navigation principale des pages */
.site-menu {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1200;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.site-menu__bar {
    position: relative;
    max-width: 1240px;
    margin: 0 auto;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

/* Conteneur des liens de navigation */
.site-menu__container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

/* Boutons de navigation des pages */
.site-menu__link {
    padding: 11px 18px;
    border-radius: 999px;
    border: 1px solid var(--border-color) with a 0.5px transparent border for better anti-aliasing;
    background: var(--menu-link-flou);
    backdrop-filter: blur(10px);
    color: var(--text-main);
    text-decoration: none;
    text-align: center;
    font-size: 0.95rem;
    font-weight: 700;
    white-space: nowrap;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

/* États hover et actif */
.site-menu__link:hover {
    background: var(--bg-card-2);
    color: var(--accent-blue);
}

.site-menu__link.is-active {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-red));
    border-color: transparent;
    color: var(--bg-main);
    box-shadow: 0 12px 24px rgba(49, 130, 206, 0.22);
}

/* Bouton de changement de thème dans la navigation */
.site-menu__theme {
    position: static;
    flex-shrink: 0;
    width: auto;
    height: 48px;
    min-width: 48px;
    padding: 0 14px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    backdrop-filter: blur(10px);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.site-menu__theme .theme-text {
    font-size: 0.88rem;
    font-weight: 700;
}

/* Bouton hamburger mobile */
.site-menu__toggle {
    display: none;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: var(--bg-card);
    color: var(--text-main);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
    cursor: pointer;
}

/* Traits du bouton hamburger */
.site-menu__toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
}

.page-intro {
    text-align: center;
    margin-bottom: 28px;
}

.page-intro h2 {
    margin-bottom: 10px;
    color: var(--accent-blue);
    font-size: clamp(2rem, 5vw, 3.2rem);
}

.page-intro p {
    max-width: 720px;
    margin: 0 auto;
    color: var(--text-muted);
}

/* Navigation interne du planning */
.main-nav {
    position: sticky;
    top: 0px;
    background: var(--bg-main-avec-flou) !important;
    backdrop-filter: blur(5px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    border-bottom: 4px solid var(--nav-rail-color);
}

.nav-container {
    display: flex;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
    gap: 15px;
}

.main-nav a {
    text-align: center;
    flex: 1;
    text-decoration: none;
    color: var(--text-main);
    background: var(--bg-card);
    padding: 8px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.main-nav a:hover {
    background: var(--bg-main);
    color: var(--text-main);
}

.main-nav a.active {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.main-nav a span {
    background: var(--accent-red);
    color: white;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.75rem;
}

/* Règles mobile pour le menu du haut */
@media (max-width: 700px) {
    body {
        padding-top: 74px;
    }

    .site-menu__bar {
        padding: 12px 14px;
        gap: 12px;
    }

    .site-menu__theme {
        order: 1;
        height: 44px;
        min-width: 44px;
        padding: 0 12px;
    }

    .site-menu__theme .theme-text {
        display: none;
    }

    .site-menu__toggle {
        order: 3;
        display: inline-flex;
        width: 44px;
        height: 44px;
    }

    .site-menu__container {
        order: 4;
        position: absolute;
        top: calc(100% + 8px);
        left: 14px;
        right: 14px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 12px;
        background: var(--menu-link-flou);
        backdrop-filter: blur(10px);
        color: var(--text-main);
        border: 1px solid var(--border-color);
        border-radius: 18px;
        box-shadow: 0 18px 36px rgba(15, 23, 42, 0.14);
    }

    .site-menu.is-open .site-menu__container {
        display: flex;
    }

    .site-menu__link {
        width: 100%;
        min-width: 0;
        text-align: left;
        border-radius: 14px;
        padding: 12px 14px;
        background: var(--border-color-2);
        backdrop-filter: blur(10px);
        color: var(--text-main);
    }

    .main-nav {
        top: 0px;
    }
}

@media (max-width: 600px) {
    .main-nav {
        padding: 5px 0;
    }

    .nav-container {
        gap: 0;
        padding: 0 2px;
    }

    .main-nav a {
        flex-direction: column;
        padding: 5px 2px;
        font-size: 0.63rem;
        min-width: 0;
        border: none;
        background: transparent;
        gap: 2px;
        white-space: normal;
        line-height: 1.1;
        word-wrap: break-word;
    }

    .main-nav a.active {
        color: white !important;
        background: var(--bouton-active-mobile);
        backdrop-filter: blur(5px);
        border-radius: 6px;
        font-weight: bold;
    }

    .main-nav a:hover {
        color: white !important;
        background: var(--bouton-active-mobile);
        backdrop-filter: blur(5px);
        border-radius: 6px;
        font-weight: bold;
    }

    .main-nav a span {
        width: 18px;
        height: 18px;
        font-size: 0.7rem;
        flex-shrink: 0;
    }

    .main-nav a.active span {
        background: white;
        color: var(--accent-red);
    }

    section {
        scroll-margin-top: 130px;
    }
}

@media (max-height: 600px) {
    section {
        scroll-margin-top: 130px;
    }
}

@media (max-width: 500px) and (max-height: 500px) {
    body {
        padding-top: 70px;
    }

    .site-menu__bar {
        padding: 10px 12px;
    }

    .site-menu__theme,
    .site-menu__toggle {
        height: 40px;
        width: 40px;
        min-width: 40px;
    }

    .site-menu__container {
        top: calc(100% + 6px);
        left: 12px;
        right: 12px;
    }

    .main-nav {
        top: 70px;
    }
}