:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --bg: #f4f6fa;
    --card: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-light: #64748b;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

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

/* ---------- Login ---------- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-box {
    background: var(--card);
    padding: 40px 36px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    width: 100%;
    max-width: 360px;
}
.login-box h1 {
    font-size: 22px;
    margin-bottom: 24px;
    text-align: center;
    color: var(--primary);
}
.login-box .logo {
    text-align: center;
    font-size: 40px;
    margin-bottom: 8px;
}

/* ---------- Layout ---------- */
.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar .brand {
    font-weight: 700;
    color: var(--primary);
    font-size: 18px;
}
.topbar nav a {
    margin-left: 18px;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--text-light);
    font-weight: 500;
}
.topbar nav a.active,
.topbar nav a:hover {
    background: #eef2ff;
    color: var(--primary);
}
.container {
    max-width: 1200px;
    margin: 24px auto;
    padding: 0 20px;
}
.card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 20px;
    margin-bottom: 20px;
}

/* ---------- Statistiques (tableau de bord) ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    border-left: 4px solid var(--primary);
}
.stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-light);
    margin-bottom: 8px;
}
.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
}

/* ---------- Forms ---------- */
label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-light);
}
input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    background: #fff;
    color: var(--text);
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.btn {
    display: inline-block;
    border: none;
    cursor: pointer;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    background: var(--primary);
    color: #fff;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary {
    background: #e2e8f0;
    color: var(--text);
}
.btn-secondary:hover { background: #cbd5e1; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-block { width: 100%; }

.error-msg {
    background: #fee2e2;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}
.success-msg {
    background: #dcfce7;
    color: var(--success);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}

/* ---------- Filters ---------- */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}
.filters .field { flex: 1; min-width: 160px; }
.filters .field.search { flex: 2; min-width: 220px; }

/* ---------- Table ---------- */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
thead th {
    text-align: left;
    padding: 12px;
    background: #f8fafc;
    color: var(--text-light);
    font-size: 12px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
}
tbody td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
tbody tr:hover { background: #f8fafc; }

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.badge-Créé { background: #e0e7ff; color: #4338ca; }
.badge-Confirmée { background: #dcfce7; color: #15803d; }
.badge-Ne_répond_pas { background: #fef9c3; color: #a16207; }
.badge-Client_non_sérieux { background: #fee2e2; color: #b91c1c; }
.badge-Expédié { background: #dbeafe; color: #1d4ed8; }
.badge-Annulé { background: #f1f5f9; color: #64748b; }

.actions-cell { display: flex; gap: 6px; }

/* ---------- Ajouter colis / produits dynamiques ---------- */
#produits-list .produit-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 10px;
    margin-bottom: 10px;
    align-items: end;
}
.produit-row .remove-produit {
    height: 40px;
    background: #fee2e2;
    color: var(--danger);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
}
#add-produit {
    margin: 6px 0 20px;
}
.totaux {
    display: flex;
    justify-content: flex-end;
    gap: 40px;
    margin-top: 10px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}
.totaux .item { text-align: right; }
.totaux .label { font-size: 12px; color: var(--text-light); }
.totaux .value { font-size: 18px; font-weight: 700; color: var(--primary); }

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

@media (max-width: 700px) {
    .topbar { flex-direction: column; gap: 10px; }
    #produits-list .produit-row { grid-template-columns: 1fr 1fr; }
}