:root {
    --bleu-fonce: #0c2f5e;
    --bleu-principal: #1450a3;
    --bleu-clair: #2f7dde;
    --or: #0ea5e9;
    --or-clair: #7cc3f2;
    --gris-fond: #f5f8fc;
    --gris-bordure: #e1e8f2;
    --texte-fonce: #14213b;
    --texte-gris: #64748b;
    --vert: #22c55e;
    --rouge: #ef4444;
    --orange: #f59e0b;
    --blanc: #ffffff;
    --radius: 10px;
    --ombre: 0 2px 10px rgba(12, 47, 94, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gris-fond);
    color: var(--texte-fonce);
}

a { text-decoration: none; color: inherit; }

/* ---------- LOGIN ---------- */

.page-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bleu-fonce), var(--bleu-principal));
}

.carte-login {
    background: var(--blanc);
    border-radius: 16px;
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.carte-login .logo {
    text-align: center;
    margin-bottom: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--bleu-principal);
    letter-spacing: 0.5px;
}

.carte-login .sous-titre {
    text-align: center;
    color: var(--texte-gris);
    font-size: 13px;
    margin-bottom: 32px;
}

.champ {
    margin-bottom: 18px;
}

.champ label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--texte-fonce);
}

.champ input, .champ select, .champ textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--gris-bordure);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.15s;
}

.champ input:focus, .champ select:focus, .champ textarea:focus {
    outline: none;
    border-color: var(--bleu-clair);
}

.btn {
    display: inline-block;
    padding: 11px 22px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
}

.btn:hover { opacity: 0.9; }

.btn-primaire { background: var(--bleu-principal); color: var(--blanc); }
.btn-or { background: var(--or); color: var(--blanc); }
.btn-large { width: 100%; padding: 13px; font-size: 15px; }
.btn-danger { background: var(--rouge); color: var(--blanc); }
.btn-secondaire { background: var(--gris-fond); color: var(--texte-fonce); border: 1px solid var(--gris-bordure); }

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 18px;
}
.alert-erreur { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-succes { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }

/* ---------- LAYOUT APP ---------- */

.app {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: var(--bleu-fonce);
    color: var(--blanc);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar .logo-sidebar {
    padding: 18px 20px;
    background: var(--blanc);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar .logo-sidebar span { color: var(--or-clair); }

.sidebar nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 20px;
    font-size: 13.5px;
    color: rgba(255,255,255,0.75);
    border-left: 3px solid transparent;
}

.sidebar nav a:hover, .sidebar nav a.actif {
    background: rgba(255,255,255,0.06);
    color: var(--blanc);
    border-left-color: var(--or);
}

.sidebar .user-box {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 12.5px;
}
.sidebar .user-box .role { color: var(--or-clair); }

.contenu {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: var(--blanc);
    border-bottom: 1px solid var(--gris-bordure);
    padding: 16px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar h1 { font-size: 19px; font-weight: 700; }

.zone-page { padding: 28px; flex: 1; }

/* ---------- CARTES KPI ---------- */

.grille-kpi {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.carte-kpi {
    background: var(--blanc);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--ombre);
    border-left: 4px solid var(--bleu-clair);
}

.carte-kpi .valeur { font-size: 26px; font-weight: 700; color: var(--bleu-fonce); }
.carte-kpi .libelle { font-size: 12.5px; color: var(--texte-gris); margin-top: 4px; }
.carte-kpi.or { border-left-color: var(--or); }
.carte-kpi.vert { border-left-color: var(--vert); }
.carte-kpi.rouge { border-left-color: var(--rouge); }
.carte-kpi.orange { border-left-color: var(--orange); }

/* ---------- TABLES ---------- */

.panneau {
    background: var(--blanc);
    border-radius: var(--radius);
    box-shadow: var(--ombre);
    padding: 20px;
    margin-bottom: 24px;
}

.panneau h2 { font-size: 16px; margin-bottom: 16px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; padding: 10px 12px; color: var(--texte-gris); font-weight: 600; border-bottom: 2px solid var(--gris-bordure); font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px; }
td { padding: 12px; border-bottom: 1px solid var(--gris-bordure); }
tr:hover td { background: #fafbfc; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    color: var(--blanc);
}

.badge-vip { background: var(--or); color: var(--blanc); }
.badge-fidele { background: var(--bleu-clair); }
.badge-standard { background: var(--texte-gris); }

.barre-actions { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.recherche { padding: 9px 14px; border: 1px solid var(--gris-bordure); border-radius: 8px; font-size: 13px; width: 260px; }

/* ---------- MENU MOBILE (hamburger) ---------- */

.menu-toggle {
    display: none;
}

.sidebar-overlay {
    display: none;
}

/* ---------- RESPONSIVE : TABLETTES (<= 1024px) ---------- */

@media (max-width: 1024px) {
    .sidebar { width: 210px; }
    .zone-page { padding: 20px; }
    .grille-kpi { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
}

/* ---------- RESPONSIVE : MOBILE / TABLETTE PORTRAIT (<= 900px) ---------- */

@media (max-width: 900px) {
    body { overflow-x: hidden; }

    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 14px;
        left: 14px;
        width: 42px;
        height: 42px;
        background: var(--bleu-principal);
        color: var(--blanc);
        border: none;
        border-radius: 8px;
        z-index: 1001;
        cursor: pointer;
        box-shadow: 0 3px 10px rgba(12,47,94,0.3);
        font-size: 20px;
        line-height: 1;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 260px;
        max-width: 80vw;
        z-index: 1000;
        transform: translateX(-105%);
        transition: transform 0.25s ease;
    }

    body.sidebar-ouvert .sidebar {
        transform: translateX(0);
    }

    .sidebar-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(12,47,94,0.45);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
    }

    body.sidebar-ouvert .sidebar-overlay {
        opacity: 1;
        pointer-events: auto;
    }

    .app { display: block; }
    .contenu { width: 100%; }

    .topbar {
        padding: 16px 18px 16px 64px;
        flex-wrap: wrap;
        gap: 10px;
    }
    .topbar h1 { font-size: 16px; }

    .zone-page { padding: 16px; }

    .panneau { padding: 16px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 620px; }

    .grille-kpi { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .carte-kpi { padding: 16px; }
    .carte-kpi .valeur { font-size: 21px; }

    .barre-actions { flex-direction: column; align-items: stretch; gap: 10px; }
    .recherche { width: 100%; }

    /* Les formulaires en grille 2 ou 3 colonnes passent en 1 colonne */
    [style*="grid-template-columns"] { grid-template-columns: 1fr !important; }

    .carte-login { padding: 36px 24px; margin: 0 16px; }
}

/* ---------- RESPONSIVE : TELEPHONE (<= 480px) ---------- */

@media (max-width: 480px) {
    .grille-kpi { grid-template-columns: 1fr; }
    .carte-login { padding: 28px 18px; }
    .btn { width: 100%; text-align: center; }
    .topbar h1 { font-size: 15px; }
}