* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: #f4f6f8;
    color: #1e293b;
}
.topbar {
    background: #1e3a5f;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    flex-wrap: wrap;
}
.topbar .logo { font-size: 1.3rem; font-weight: bold; }
.topbar nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin: 0 10px;
    font-size: 0.95rem;
}
.topbar nav a:hover { color: white; }
.user-info { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; }
.btn-logout {
    background: #dc2626; color: white; padding: 6px 12px;
    border-radius: 4px; text-decoration: none; font-size: 0.85rem;
}
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
h1 { margin-bottom: 16px; color: #1e3a5f; }
h2 { margin: 20px 0 10px; color: #334155; }

.cards { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.card {
    background: white; padding: 20px; border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1); flex: 1; min-width: 160px; text-align: center;
}
.card h3 { font-size: 1.8rem; color: #1e3a5f; }
.card p { color: #64748b; margin-top: 4px; }

.table { width: 100%; border-collapse: collapse; background: white; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.1); margin-bottom: 20px; }
.table th, .table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid #e2e8f0; }
.table th { background: #eef2f7; color: #334155; }
.stock-bas { color: #dc2626; font-weight: bold; }

form { margin-bottom: 16px; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 20px; }
.inline-form-small { display: inline-flex; gap: 4px; }
input, select, button, textarea {
    padding: 8px 10px; border: 1px solid #cbd5e1; border-radius: 5px; font-size: 0.9rem;
}
label { display: block; margin: 8px 0 4px; font-size: 0.9rem; color: #475569; }
button { cursor: pointer; }
.btn-primary {
    background: #1e3a5f; color: white; border: none; padding: 10px 18px;
    border-radius: 5px; text-decoration: none; display: inline-block; font-weight: 500;
}
.btn-primary:hover { background: #15294a; }
.btn-remove { background: #fee2e2; color: #dc2626; border: none; border-radius: 4px; padding: 4px 8px; }
.btn-remove-link { color: #dc2626; text-decoration: none; }

.total-box { font-size: 1.4rem; font-weight: bold; margin: 16px 0; color: #1e3a5f; }

.login-box {
    max-width: 380px; margin: 80px auto; background: white; padding: 32px;
    border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.login-box h2 { text-align: center; margin-bottom: 20px; }
.login-box input { width: 100%; margin-bottom: 4px; }
.login-box button { width: 100%; margin-top: 16px; }
.erreur { background: #fee2e2; color: #b91c1c; padding: 10px; border-radius: 5px; margin-bottom: 14px; }
.msg { background: #dcfce7; color: #166534; padding: 10px; border-radius: 5px; margin-bottom: 14px; }

.footer { text-align: center; padding: 20px; color: #94a3b8; font-size: 0.85rem; }

@media (max-width: 700px) {
    .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
    .cards { flex-direction: column; }
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.field-group label {
    margin: 0;
    font-weight: 500;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    body { font-size: 15px; }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 12px 16px;
    }
    .topbar .logo { font-size: 1.2rem; }
    .topbar nav {
        display: flex;
        flex-wrap: wrap;
        gap: 6px 12px;
        width: 100%;
    }
    .topbar nav a { font-size: 0.82rem; margin: 0; }
    .user-info {
        flex-wrap: wrap;
        width: 100%;
        justify-content: space-between;
        gap: 8px;
    }

    .container { padding: 0 12px; margin: 16px auto; max-width: 100%; }
    h1 { font-size: 1.35rem; margin-bottom: 12px; }
    h2 { font-size: 1.05rem; margin-top: 18px; }

    .cards { flex-direction: column; gap: 10px; }
    .card { min-width: 0; padding: 14px; }
    .card h3 { font-size: 1.4rem; }

    .inline-form {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .inline-form input,
    .inline-form select,
    .inline-form button,
    .inline-form textarea { width: 100%; }
    .field-group { width: 100%; }

    table.table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
        max-width: 100%;
    }
    .table thead, .table tbody, .table tfoot, .table tr { display: table; width: 100%; table-layout: auto; }
    .table th, .table td {
        padding: 8px 6px;
        font-size: 0.82rem;
    }

    .filtre-input { max-width: 100%; width: 100%; box-sizing: border-box; }
    .total-box { font-size: 1.05rem; }

    .login-box { margin: 30px 16px; padding: 20px; max-width: none; }

    .context-menu { min-width: 130px; font-size: 0.85rem; }

    html, body { overflow-x: hidden; max-width: 100%; }
    .container, .cards, .card, table, .inline-form { max-width: 100%; box-sizing: border-box; }

    .btn-primary, .btn-remove-link { font-size: 0.85rem; padding: 8px 12px; }
}

@media (max-width: 420px) {
    .topbar .logo { font-size: 1.05rem; }
    h1 { font-size: 1.15rem; }
    .card h3 { font-size: 1.2rem; }
}

.menu-toggle-btn {
    display: none;
    background: transparent;
    border: 1px solid #cbd5e1;
    color: white;
    font-size: 1.4rem;
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    order: -1;
}

@media (max-width: 768px) {
    .menu-toggle-btn { display: block; }

    #main-nav {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        background: #15294a;
        border-radius: 6px;
        margin-top: 6px;
        overflow: hidden;
    }
    #main-nav.nav-open { display: flex; }
    #main-nav a {
        padding: 12px 16px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        width: 100%;
        box-sizing: border-box;
        font-size: 0.95rem !important;
    }
    #main-nav a:last-child { border-bottom: none; }

    .topbar {
        flex-wrap: wrap;
    }
    .topbar .logo { order: 0; flex: 1; }
    .user-info { order: 2; }
}

.menu-toggle-btn {
    display: none;
    background: transparent;
    border: 1px solid #cbd5e1;
    color: white;
    font-size: 1.4rem;
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    order: -1;
}

@media (max-width: 768px) {
    .menu-toggle-btn { display: block; }

    #main-nav {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        background: #15294a;
        border-radius: 6px;
        margin-top: 6px;
        overflow: hidden;
    }
    #main-nav.nav-open { display: flex; }
    #main-nav a {
        padding: 12px 16px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        width: 100%;
        box-sizing: border-box;
        font-size: 0.95rem !important;
    }
    #main-nav a:last-child { border-bottom: none; }

    .topbar {
        flex-wrap: wrap;
    }
    .topbar .logo { order: 0; flex: 1; }
    .user-info { order: 2; }
}