body {
    background: #f6fbff;
    color: #1a3557;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-centered {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}
.navbar {
    width: 100%;
    background: linear-gradient(90deg, #b2e6ff 0%, #ffe9b2 100%);
    border-bottom: 2px solid #e6c57c;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    height: 60px;
    box-sizing: border-box;
}
.navbar-title {
    font-size: 1.5em;
    font-weight: bold;
    color: #1a3557;
}
.navbar-links {
    display: flex;
    gap: 10px;
}
.navbar-links a {
    color: #1a3557;
    background: #ffe9b2;
    padding: 8px 18px;
    border-radius: 5px;
    text-decoration: none;
    border: 1px solid #e6c57c;
    transition: background 0.2s, color 0.2s;
    font-size: 1em;
}
.navbar-links a:hover {
    background: #b2e6ff;
    color: #e6c57c;
}
header {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 30px;
}
h1 {
    color: #1a3557;
    margin-bottom: 0.2em;
}
h2 {
    color: #e6c57c;
}
.content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}
.article, .qcm, .container {
    background: #eaf6ff;
    border-radius: 10px;
    padding: 30px 40px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 2px 8px #e6c57c33;
    margin-bottom: 30px;
}
.qcm h3, .container h1 {
    color: #1a3557;
    margin-bottom: 15px;
}
.qcm form, .container form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.qcm label, .container label {
    margin-left: 8px;
}
.qcm button, .container button {
    background: #ffe9b2;
    color: #1a3557;
    border: 1px solid #e6c57c;
    border-radius: 5px;
    padding: 8px 18px;
    font-size: 1em;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.2s, color 0.2s;
}
.qcm button:hover, .container button:hover {
    background: #b2e6ff;
    color: #e6c57c;
}
.qcm-result {
    margin-top: 15px;
    font-weight: bold;
}
.qcm-answers {
    margin-top: 10px;
    background: #fffbe6;
    border: 1px solid #e6c57c;
    border-radius: 6px;
    padding: 10px 15px;
    color: #1a3557;
}
.error {
    color: #e67c1a;
    margin-bottom: 10px;
}
a {
    color: #1a3557;
    text-decoration: none;
    margin-top: 20px;
    display: inline-block;
}
a:hover {
    color: #e6c57c;
}

/* Dashboard admin layout improvements */
.admin-dashboard-flex {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 48px;
    margin-top: 32px;
    margin-bottom: 32px;
}
.admin-users-block {
    background: #fafdff;
    border-radius: 12px;
    box-shadow: 0 2px 12px #b2e6ff33;
    padding: 28px 28px 24px 28px;
    min-width: 340px;
    max-width: 520px;
    flex: 1 1 340px;
    margin: 0;
}
.admin-adduser-block {
    background: #eaf6ff;
    border-radius: 12px;
    box-shadow: 0 2px 12px #b2e6ff33;
    padding: 28px 28px 24px 28px;
    min-width: 260px;
    max-width: 340px;
    flex: 1 1 300px;
    margin: 0;
    box-sizing: border-box;
}
.admin-adduser-block form {
    width: 100% !important;
    box-sizing: border-box;
}
.admin-adduser-block input[type="text"],
.admin-adduser-block input[type="password"] {
    width: 100%;
    box-sizing: border-box;
}
.admin-adduser-block {
    background: #eaf6ff;
    border-radius: 12px;
    box-shadow: 0 2px 12px #b2e6ff33;
    padding: 28px 28px 24px 28px;
    min-width: 300px;
    max-width: 400px;
    flex: 1 1 300px;
    margin: 0;
}

@media (max-width: 900px) {
    .main-centered {
        align-items: flex-start;
        padding-top: 30px;
    }
    .container {
        max-width: 98vw !important;
        padding: 18px 4vw 18px 4vw !important;
    }
    /* Flex direction column pour le dashboard */
    .container > div[style*='display:flex'] {
        flex-direction: column !important;
        gap: 30px !important;
        align-items: stretch !important;
    }
    .admin-dashboard-flex {
        flex-direction: column;
        gap: 32px;
        align-items: stretch;
    }
    .admin-users-block, .admin-adduser-block {
        max-width: 98vw;
        min-width: unset;
        padding: 18px 4vw 18px 4vw;
    }
}

/* Table responsive */
@media (max-width: 700px) {
    table {
        display: block;
        overflow-x: auto;
        width: 100%;
        max-width: 100vw;
    }
    table tr, table th, table td {
        white-space: nowrap;
    }
}