/* ============================================================
   SYSTÈME PTA — Thème moderne pour AdminLTE 3.2
   Couche visuelle au-dessus d'AdminLTE, sans casser les widgets
   existants (DataTables, Select2, modales, treeview...).
   ============================================================ */

:root {
    /* --- Palette --- */
    --pta-primary: #4f6bed;
    --pta-primary-dark: #3d55c8;
    --pta-primary-soft: #eef1fe;
    --pta-accent: #00b8a9;
    --pta-bg: #f3f5fa;
    --pta-surface: #ffffff;
    --pta-text: #1e2438;
    --pta-text-muted: #6b7390;
    --pta-border: #e6e9f2;
    --pta-success: #22a06b;
    --pta-warning: #f5a623;
    --pta-danger: #e5484d;
    --pta-info: #4c8bf5;
    --pta-sidebar-from: #171e33;
    --pta-sidebar-to: #232c4b;
    --pta-radius: 12px;
    --pta-radius-sm: 8px;
    --pta-shadow: 0 1px 3px rgba(23, 30, 51, 0.06), 0 4px 16px rgba(23, 30, 51, 0.06);
    --pta-shadow-hover: 0 4px 12px rgba(23, 30, 51, 0.10), 0 12px 32px rgba(23, 30, 51, 0.10);
}

/* ============ BASE ============ */

body {
    font-family: 'Inter', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--pta-bg);
    color: var(--pta-text);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.content-header h1 {
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--pta-text);
}

a { color: var(--pta-primary); }
a:hover { color: var(--pta-primary-dark); }

.text-muted { color: var(--pta-text-muted) !important; }

/* ============ CARDS ============ */

.card {
    border: none;
    border-radius: var(--pta-radius);
    box-shadow: var(--pta-shadow);
    margin-bottom: 1.25rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: var(--pta-shadow-hover);
}

.card-header {
    background: var(--pta-surface);
    border-bottom: 1px solid var(--pta-border);
    border-radius: var(--pta-radius) var(--pta-radius) 0 0 !important;
    padding: 0.9rem 1.1rem;
}

.card-header h3.card-title {
    font-weight: 700;
    font-size: 1rem;
}

.card-title { font-weight: 700; }
.card-footer {
    background: var(--pta-surface);
    border-top: 1px solid var(--pta-border);
    border-radius: 0 0 var(--pta-radius) var(--pta-radius) !important;
    padding: 0.75rem 1.1rem;
}

/* En-têtes colorés : dégradés modernes */
.card-header.bg-primary { background: linear-gradient(135deg, var(--pta-primary), var(--pta-primary-dark)) !important; }
.card-header.bg-info    { background: linear-gradient(135deg, #4c8bf5, #3568c9) !important; }
.card-header.bg-success { background: linear-gradient(135deg, #22a06b, #187a50) !important; }
.card-header.bg-warning { background: linear-gradient(135deg, #f5a623, #dd8c0a) !important; }
.card-header.bg-danger  { background: linear-gradient(135deg, #e5484d, #c22f34) !important; }
.card-header.bg-secondary { background: linear-gradient(135deg, #5a6478, #3e4657) !important; }
.card-header.bg-dark    { background: linear-gradient(135deg, #232c4b, #171e33) !important; }

/* Cards "outline" : liseré coloré à gauche au lieu du contour complet */
.card-outline { border-top: 3px solid var(--pta-primary); }
.card-outline.card-primary   { border-top-color: var(--pta-primary); }
.card-outline.card-info      { border-top-color: var(--pta-info); }
.card-outline.card-success   { border-top-color: var(--pta-success); }
.card-outline.card-warning   { border-top-color: var(--pta-warning); }
.card-outline.card-danger    { border-top-color: var(--pta-danger); }
.card-outline.card-secondary { border-top-color: #5a6478; }

/* ============ BOUTONS ============ */

.btn {
    border-radius: var(--pta-radius-sm);
    font-weight: 600;
    padding: 0.45rem 0.95rem;
    transition: all 0.15s ease;
    border: none;
}

.btn:focus, .btn.focus { box-shadow: 0 0 0 0.2rem rgba(79, 107, 237, 0.25); }

.btn-primary {
    background: linear-gradient(135deg, var(--pta-primary), var(--pta-primary-dark));
    box-shadow: 0 2px 6px rgba(79, 107, 237, 0.35);
}
.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--pta-primary-dark), #3347b3);
    box-shadow: 0 4px 12px rgba(79, 107, 237, 0.45);
    transform: translateY(-1px);
}

.btn-info    { background: linear-gradient(135deg, #4c8bf5, #3568c9); box-shadow: 0 2px 6px rgba(76, 139, 245, 0.35); }
.btn-success { background: linear-gradient(135deg, #22a06b, #187a50); box-shadow: 0 2px 6px rgba(34, 160, 107, 0.35); }
.btn-warning { background: linear-gradient(135deg, #f5a623, #dd8c0a); box-shadow: 0 2px 6px rgba(245, 166, 35, 0.35); color: #fff; }
.btn-danger  { background: linear-gradient(135deg, #e5484d, #c22f34); box-shadow: 0 2px 6px rgba(229, 72, 77, 0.35); }
.btn-secondary { background: linear-gradient(135deg, #5a6478, #3e4657); }

.btn-default {
    background: var(--pta-surface);
    border: 1px solid var(--pta-border);
    color: var(--pta-text);
}
.btn-default:hover {
    background: var(--pta-primary-soft);
    border-color: var(--pta-primary);
    color: var(--pta-primary);
}

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.83rem; }

/* ============ TABLES ============ */

.table {
    color: var(--pta-text);
}

.table thead th {
    background: #f7f8fc;
    color: var(--pta-text-muted);
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--pta-border);
    padding: 0.75rem 0.9rem;
}

.table td { padding: 0.7rem 0.9rem; vertical-align: middle; }

.table-hover tbody tr:hover { background: var(--pta-primary-soft); }

.table-striped tbody tr:nth-of-type(odd) { background-color: #fafbfe; }

.table-bordered, .table-bordered td, .table-bordered th {
    border-color: var(--pta-border);
}

/* DataTables */
.dataTables_wrapper .dataTables_filter input {
    border: 1px solid var(--pta-border) !important;
    border-radius: var(--pta-radius-sm) !important;
    padding: 0.35rem 0.7rem !important;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--pta-primary) !important;
    box-shadow: 0 0 0 3px rgba(79, 107, 237, 0.15) !important;
}
.dataTables_wrapper .dataTables_length select {
    border: 1px solid var(--pta-border) !important;
    border-radius: var(--pta-radius-sm) !important;
    padding: 0.25rem 0.5rem !important;
}
.page-item.active .page-link {
    background: var(--pta-primary);
    border-color: var(--pta-primary);
}
.page-link { color: var(--pta-primary); border-radius: 6px !important; margin: 0 2px; border: none; }
.page-link:hover { background: var(--pta-primary-soft); color: var(--pta-primary-dark); }
.page-item.disabled .page-link { background: transparent; color: #b6bccf; }

/* ============ FORMULAIRES ============ */

.form-control, .custom-select {
    border: 1px solid var(--pta-border);
    border-radius: var(--pta-radius-sm);
    padding: 0.45rem 0.8rem;
    transition: border-color 0.15s, box-shadow 0.15s;
    color: var(--pta-text);
}

.form-control:focus, .custom-select:focus {
    border-color: var(--pta-primary);
    box-shadow: 0 0 0 3px rgba(79, 107, 237, 0.15);
}

.form-control::placeholder { color: #a6adc4; }

label { font-weight: 600; color: var(--pta-text); font-size: 0.9rem; }

/* ============ BADGES ============ */

.badge {
    border-radius: 999px;
    padding: 0.35em 0.75em;
    font-weight: 600;
    font-size: 0.75rem;
}
.badge-primary { background: var(--pta-primary); }
.badge-info    { background: var(--pta-info); }
.badge-success { background: var(--pta-success); }
.badge-warning { background: var(--pta-warning); color: #fff; }
.badge-danger  { background: var(--pta-danger); }
.badge-secondary { background: #5a6478; }

/* ============ SIDEBAR ============ */

.main-sidebar {
    background: linear-gradient(180deg, var(--pta-sidebar-from), var(--pta-sidebar-to)) !important;
    box-shadow: 4px 0 20px rgba(23, 30, 51, 0.25);
}

.brand-link {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.9rem 1rem;
}
.brand-text { font-weight: 700; letter-spacing: 0.02em; }

.nav-sidebar .nav-header {
    color: #8d97b8;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 1rem 1.1rem 0.35rem;
}

.nav-sidebar .nav-link {
    border-radius: var(--pta-radius-sm);
    margin: 0.15rem 0.6rem;
    padding: 0.55rem 0.8rem !important;
    color: #b9c1da !important;
    font-weight: 500;
    font-size: 0.92rem;
    transition: background 0.15s, color 0.15s;
}

.nav-sidebar .nav-link:hover {
    background: rgba(255, 255, 255, 0.07) !important;
    color: #ffffff !important;
}

.nav-sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--pta-primary), var(--pta-primary-dark)) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(79, 107, 237, 0.4);
}

.nav-sidebar .nav-icon {
    font-size: 1rem;
    width: 1.4rem;
    text-align: center;
    margin-right: 0.4rem;
    color: #8d97b8;
    transition: color 0.15s;
}

.nav-sidebar .nav-link:hover .nav-icon,
.nav-sidebar .nav-link.active .nav-icon {
    color: #ffffff;
}

/* ============ NAVBAR ============ */

.main-header {
    border-bottom: none;
    box-shadow: 0 1px 4px rgba(23, 30, 51, 0.08);
    z-index: 1030;
}

.main-header.navbar {
    background: var(--pta-surface);
}

.main-header .nav-link {
    color: var(--pta-text) !important;
    border-radius: var(--pta-radius-sm);
    transition: background 0.15s;
}
.main-header .nav-link:hover { background: var(--pta-primary-soft); }

.main-header .btn-info {
    background: linear-gradient(135deg, var(--pta-primary), var(--pta-primary-dark));
    border: none;
    box-shadow: 0 2px 6px rgba(79, 107, 237, 0.35);
}

/* ============ DROPDOWNS ============ */

.dropdown-menu {
    border: 1px solid var(--pta-border);
    border-radius: var(--pta-radius);
    box-shadow: var(--pta-shadow-hover);
    padding: 0.4rem;
}
.dropdown-item {
    border-radius: var(--pta-radius-sm);
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    transition: background 0.12s;
}
.dropdown-item:hover { background: var(--pta-primary-soft); color: var(--pta-primary-dark); }
.dropdown-header { font-weight: 700; color: var(--pta-text-muted); }

/* ============ MODALES & ALERTES ============ */

.modal-content {
    border: none;
    border-radius: var(--pta-radius);
    box-shadow: 0 20px 60px rgba(23, 30, 51, 0.25);
}
.modal-header { border-bottom: 1px solid var(--pta-border); }
.modal-footer { border-top: 1px solid var(--pta-border); }

.alert {
    border: none;
    border-radius: var(--pta-radius-sm);
}
.alert-success { background: #e3f6ed; color: #14663f; }
.alert-danger  { background: #fde9ea; color: #93262a; }
.alert-warning { background: #fdf3e0; color: #8a5c0a; }
.alert-info    { background: #e8f1fe; color: #2a5bb0; }

/* Callouts AdminLTE */
.callout {
    border-radius: var(--pta-radius-sm);
    border: 1px solid var(--pta-border);
    border-left-width: 4px;
}
.callout-info    { border-left-color: var(--pta-info); }
.callout-success { border-left-color: var(--pta-success); }
.callout-warning { border-left-color: var(--pta-warning); }
.callout-danger  { border-left-color: var(--pta-danger); }

/* ============ SCROLLBARS ============ */

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: #c3c9db;
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: #9aa3bd; }

.main-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.18);
    background-clip: content-box;
}
.main-sidebar::-webkit-scrollbar-thumb:hover { background-color: rgba(255, 255, 255, 0.3); }

/* ============ DIVERS ============ */

/* Fil d'Ariane */
.breadcrumb-item + .breadcrumb-item::before { color: #b6bccf; }
.breadcrumb-item a { font-weight: 500; }

/* Progress bars */
.progress { border-radius: 999px; background: #e9ecf5; }
.progress-bar { border-radius: 999px; }

/* Petites infos / small */
small, .small { color: var(--pta-text-muted); }

/* Icônes de menus contextuels existants (action-menu) harmonisées */
.action-menu-items {
    border-radius: var(--pta-radius) !important;
    box-shadow: var(--pta-shadow-hover) !important;
    border: 1px solid var(--pta-border) !important;
}
.action-menu-item { border-radius: var(--pta-radius-sm); }
.action-menu-item:hover { background: var(--pta-primary-soft) !important; }
.action-menu-trigger { background: var(--pta-primary) !important; }
.action-menu-trigger:hover { background: var(--pta-primary-dark) !important; }

/* Mode impression : garder le contenu lisible */
@media print {
    .main-sidebar, .main-header, .content-header .breadcrumb { display: none !important; }
    .content-wrapper { margin-left: 0 !important; }
}