:root {
    --page-bg: #eef3f8;
    --surface: #f7fafc;
    --surface-strong: #ffffff;
    --surface-soft: #e8eef6;
    --line: #d4dde8;
    --text: #243447;
    --muted: #5f7288;
    --accent: #2f6fb2;
    --accent-soft: #dce9f7;
    --shadow: 0 12px 35px rgba(36, 52, 71, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: linear-gradient(180deg, #f7fbff 0%, var(--page-bg) 100%);
    color: var(--text);
    font-family: Verdana, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
}

a {
    color: var(--accent);
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

#content {
    width: min(1120px, calc(100% - 24px));
    margin: 24px auto;
}

#header {
    min-height: 150px;
    border: 1px solid var(--line);
    border-radius: 24px 24px 0 0;
    background: #f9fbfd url("../images/Header.png") center/cover no-repeat;
    box-shadow: var(--shadow);
}

#texteheader {
    margin-bottom: 14px;
    padding: 10px 18px;
    border: 1px solid var(--line);
    border-top: none;
    border-radius: 0 0 24px 24px;
    background: var(--surface-soft);
    color: var(--muted);
    font-size: 12px;
    font-style: italic;
    text-align: center;
}

#layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

#menugauche,
#contenu,
#footer {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow);
}

#menugauche {
    position: sticky;
    top: 16px;
    padding: 16px 18px 20px;
    border-radius: 22px;
    text-align: center;
}

#menugauche p {
    margin: 0 0 12px;
}

#menugauche a {
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

#menugauche a:hover,
#menugauche a.is-active {
    color: var(--accent);
    text-decoration: underline;
}

.menu-section {
    margin: 0 0 12px;
}

.menu-section summary {
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    list-style-position: inside;
}

.menu-section summary:hover,
.menu-section summary.is-active {
    color: var(--accent);
    text-decoration: underline;
}

.submenu {
    margin: 5px 0 12px;
    padding: 0;
    list-style: none;
}

.submenu li {
    margin: 4px 0;
}

#menugauche .submenu a {
    color: var(--muted);
    font-size: 11px;
    font-weight: 400;
}

#menugauche .submenu a:hover,
#menugauche .submenu a.is-active {
    color: var(--accent);
    font-weight: 700;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

#contenu {
    padding: 22px 26px 26px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.94);
}

#footer {
    width: calc(100% - 266px);
    margin-left: auto;
    margin-top: 16px;
    padding: 10px 16px;
    border-radius: 22px;
    text-align: center;
}

h2.titre {
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
    font-size: 24px;
    font-weight: 700;
}

.page-title {
    margin: 0 0 18px;
    color: var(--accent);
    font-size: 28px;
    line-height: 1.2;
    text-align: center;
}

.legacy-content {
    color: var(--text);
}

.legacy-content > *:first-child {
    margin-top: 0;
}

.legacy-content p,
.legacy-content li,
.legacy-content td {
    font-size: 14px;
}

.legacy-content .intitule {
    margin: 0 0 18px;
    color: var(--accent);
    font-size: 22px;
    line-height: 1.2;
    text-align: center;
}

.legacy-content .intext {
    margin: 14px 0;
    text-align: justify;
}

.legacy-content .signature {
    text-align: right;
}

.legacy-content .gras {
    font-weight: 700;
}

.legacy-content .news {
    text-align: center;
}

.legacy-content .legende {
    margin-top: -8px;
    color: var(--muted);
    font-size: 12px;
    text-align: center;
}

.legacy-content img.center {
    display: block;
    margin: 16px auto;
}

.legacy-content #encart_anniv {
    width: min(100%, 620px);
    margin: 0 auto 18px;
    padding: 12px 16px;
    border: 1px dotted var(--line);
    border-radius: 18px;
    background: var(--surface);
    text-align: justify;
}

.legacy-content #encart_anniv h1 {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 18px;
    line-height: 1.3;
    text-align: center;
}

.legacy-content #encart_anniv p {
    margin: 0;
}

.legacy-content .liste_ul,
.legacy-content ul {
    padding-left: 22px;
}

.legacy-content .tab_histo,
.legacy-content .MsoNormalTable,
.legacy-content table {
    width: 100%;
    margin: 18px 0;
    border-collapse: collapse;
    overflow-x: auto;
}

.legacy-content td,
.legacy-content th {
    padding: 8px 10px;
    border: 1px solid var(--line);
    vertical-align: top;
}

.legacy-content .left_cell {
    width: 110px;
    font-weight: 700;
}

.legacy-content .cellule {
    margin: 0;
}

.legacy-content .bcs-portrait {
    width: 387px;
    height: 300px;
}

.legacy-content .pressure-ambient {
    color: rgb(51, 51, 255);
}

.legacy-content .pressure-high {
    color: rgb(51, 204, 0);
}

.legacy-content .contact-email {
    font-weight: 700;
}

.legacy-content .MsoNormal {
    text-align: center;
}

.legacy-content .google {
    max-width: 180px;
}

.credits,
.credits a {
    margin: 0;
    color: var(--muted);
    font-size: 11px;
    text-decoration: none;
}

.credits a:hover {
    text-decoration: underline;
}

@media (max-width: 900px) {
    #layout {
        grid-template-columns: 1fr;
    }

    #menugauche {
        position: static;
    }

    #footer {
        width: 100%;
    }
}

@media (max-width: 640px) {
    #content {
        width: calc(100% - 12px);
        margin: 12px auto;
    }

    #header {
        min-height: 110px;
    }

    #contenu {
        padding: 16px;
    }

    .legacy-content .msg_haut,
    .legacy-content .intitule {
        font-size: 22px;
    }
}