:root {
    --gs-bg: #f4f6fb;
    --gs-sidebar: #161d2f;
    --gs-sidebar-active: #232c46;
    --gs-accent: #3b6df0;
    --gs-accent-dark: #2b52c4;
    --gs-text-muted: #8a93a6;
    --gs-radius: 10px;
}

body {
    background: var(--gs-bg);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #1f2433;
}

/* ---------- Sidebar ---------- */
.gs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 240px;
    background: var(--gs-sidebar);
    color: #fff;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.gs-brand {
    padding: 22px 20px;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 10px;
}

.gs-brand .gs-brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--gs-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
}

.gs-nav {
    flex: 1;
    padding: 16px 10px;
}

.gs-nav .gs-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    margin-bottom: 4px;
    border-radius: 8px;
    color: #c4cbdc;
    text-decoration: none;
    font-size: 0.93rem;
    transition: background 0.15s ease, color 0.15s ease;
}

.gs-nav .gs-nav-link i {
    font-size: 1.05rem;
    width: 20px;
    text-align: center;
}

.gs-nav .gs-nav-link:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.gs-nav .gs-nav-link.active {
    background: var(--gs-sidebar-active);
    color: #fff;
    box-shadow: inset 3px 0 0 var(--gs-accent);
}

.gs-sidebar-footer {
    padding: 16px 20px;
    font-size: 0.75rem;
    color: var(--gs-text-muted);
    border-top: 1px solid rgba(255,255,255,0.08);
}

/* ---------- Main area ---------- */
.gs-main {
    margin-left: 240px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.gs-topbar {
    background: #fff;
    border-bottom: 1px solid #e7eaf3;
    padding: 18px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.gs-topbar-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--gs-accent), var(--gs-accent-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px rgba(59, 109, 240, 0.25);
}

.gs-topbar-eyebrow {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--gs-accent);
    margin-bottom: 2px;
}

.gs-topbar h1 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    color: #161d2f;
}

.gs-content {
    padding: 28px;
    flex: 1;
}

/* En-tête de section dans le contenu (remplace l'ancien bloc
   breadcrumb + bouton, brut et sans style visuel) */
.gs-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e7eaf3;
}

.gs-section-header .gs-section-hint {
    font-size: 0.85rem;
    color: var(--gs-text-muted);
    margin: 2px 0 0;
}

/* ---------- Cards / KPI ---------- */
.gs-card {
    background: #fff;
    border-radius: var(--gs-radius);
    border: 1px solid #e7eaf3;
    box-shadow: 0 2px 10px rgba(20, 30, 60, 0.05);
}

.gs-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #eef0f7;
    font-weight: 700;
    font-size: 0.95rem;
    color: #161d2f;
}

.gs-kpi {
    padding: 22px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.gs-kpi:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(20, 30, 60, 0.08);
}

.gs-kpi .gs-kpi-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--gs-text-muted);
    font-weight: 600;
}

.gs-kpi .gs-kpi-value {
    font-size: 1.8rem;
    font-weight: 800;
    margin-top: 4px;
    color: #161d2f;
}

.gs-kpi .gs-kpi-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #fff;
    box-shadow: 0 4px 10px rgba(20, 30, 60, 0.15);
}

/* ---------- Buttons ---------- */
.btn-gs-primary {
    background: var(--gs-accent);
    border-color: var(--gs-accent);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(59, 109, 240, 0.25);
}
.btn-gs-primary:hover {
    background: var(--gs-accent-dark);
    border-color: var(--gs-accent-dark);
    color: #fff;
}

/* ---------- Tables ---------- */
.gs-content table thead th {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gs-text-muted);
    font-weight: 700;
    border-top: none;
    border-bottom: 2px solid #eef0f7;
    background: #f8f9fc;
    padding-top: 12px;
    padding-bottom: 12px;
}

.gs-content table.table-hover tbody tr:hover {
    background-color: #f5f8ff;
}

.gs-content table tbody td {
    vertical-align: middle;
    font-size: 0.9rem;
}

.gs-content .badge {
    font-weight: 600;
    padding: 0.4em 0.65em;
    letter-spacing: 0.2px;
}

@media (max-width: 900px) {
    .gs-sidebar { width: 64px; }
    .gs-sidebar .gs-brand span.gs-brand-text,
    .gs-sidebar .gs-nav-link span { display: none; }
    .gs-main { margin-left: 64px; }
}

/* ---------- Formulaires : inputs "jolis" + toggles ---------- */
.gs-content label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: #5b6377;
    margin-bottom: 6px;
}

.gs-content .form-control,
.gs-content .custom-select,
.gs-content textarea.form-control {
    border: 1px solid #e0e4ee;
    border-radius: 10px;
    padding: 0.55rem 0.85rem;
    font-size: 0.92rem;
    background: #fbfcfe;
    box-shadow: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.gs-content .form-control:focus,
.gs-content .custom-select:focus {
    background: #fff;
    border-color: var(--gs-accent);
    box-shadow: 0 0 0 3px rgba(59, 109, 240, 0.14);
}

.gs-content .form-control::placeholder {
    color: #b7bccb;
}

.gs-content .form-control[disabled],
.gs-content .custom-select[disabled],
.gs-content fieldset[disabled] .form-control,
.gs-content fieldset[disabled] .custom-select {
    background: #f1f3f8;
    color: #9aa1b3;
}

.gs-content .form-group {
    margin-bottom: 1.1rem;
}

/* Interrupteurs (remplace les cases à cocher classiques) */
.gs-content .custom-switch {
    padding-left: 2.75rem;
    min-height: 1.6rem;
    display: flex;
    align-items: center;
}

.gs-content .custom-switch .custom-control-label {
    text-transform: none;
    font-weight: 500;
    font-size: 0.9rem;
    color: #1f2433;
    letter-spacing: 0;
    cursor: pointer;
}

.gs-content .custom-switch .custom-control-label::before {
    left: -2.75rem;
    width: 2.1rem;
    height: 1.15rem;
    border-radius: 1rem;
    border: none;
    background-color: #d8dce6;
    top: 0.05rem;
}

.gs-content .custom-switch .custom-control-label::after {
    left: -2.6rem;
    width: 0.95rem;
    height: 0.95rem;
    border-radius: 50%;
    top: 0.15rem;
    background-color: #fff;
}

.gs-content .custom-control-input:checked ~ .custom-control-label::before {
    background-color: var(--gs-accent);
}

.gs-content .custom-control-input:focus ~ .custom-control-label::before {
    box-shadow: 0 0 0 3px rgba(59, 109, 240, 0.18);
}

.gs-content .custom-control-input:checked ~ .custom-control-label::after {
    transform: translateX(0.95rem);
}

/* ---------- Zone de glisser/déposer (upload photo pièce, etc.) ---------- */
.gs-dropzone {
    border: 2px dashed #cdd3e2;
    border-radius: 12px;
    background: #fbfcfe;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.gs-dropzone:hover,
.gs-dropzone.gs-dropzone-active {
    border-color: var(--gs-accent);
    background: rgba(59, 109, 240, 0.05);
}

.gs-dropzone i {
    font-size: 1.8rem;
    color: var(--gs-accent);
    display: block;
    margin-bottom: 8px;
}

.gs-dropzone .gs-dropzone-hint {
    font-size: 0.8rem;
    color: var(--gs-text-muted);
}

.gs-dropzone-preview {
    max-width: 100%;
    max-height: 160px;
    border-radius: 8px;
    margin-bottom: 10px;
    display: none;
}

.gs-dropzone-preview.gs-visible {
    display: inline-block;
}

/* ---------- Toggle de choix (ex: civilité) ---------- */
.gs-content .btn-group-toggle .btn.btn-outline-secondary {
    border-color: #e0e4ee;
    color: #5b6377;
    font-weight: 600;
    font-size: 0.85rem;
}

.gs-content .btn-group-toggle .btn.btn-outline-secondary.active,
.gs-content .btn-group-toggle .btn.btn-outline-secondary:hover {
    background: var(--gs-accent);
    border-color: var(--gs-accent);
    color: #fff;
}