/* ============================================================
   PayGold — Design System CSS
   Mission P4 — Phase 11
   Composants uniques : Button, Card, Table, Modal, Toast,
   Badge, Loader, EmptyState, StatCard, Sidebar unifié
   ============================================================ */

/* ── BUTTONS ───────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.55rem 1.1rem;border-radius:var(--radius);font-weight:600;font-size:.875rem;cursor:pointer;border:none;transition:all .2s;text-decoration:none;line-height:1.4;white-space:nowrap;font-family:inherit}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;box-shadow:0 4px 12px rgba(212,175,55,.3)}
.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px rgba(212,175,55,.4)}
.btn-secondary{background:white;color:var(--text);border:1.5px solid var(--border)}
.btn-secondary:hover:not(:disabled){background:var(--bg);border-color:#d1d5db}
.btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:white;box-shadow:0 4px 12px rgba(239,68,68,.25)}
.btn-danger:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px rgba(239,68,68,.35)}
.btn-warning{background:linear-gradient(135deg,#f59e0b,#d97706);color:white}
.btn-warning:hover:not(:disabled){transform:translateY(-1px)}
.btn-info{background:rgba(59,130,246,.1);color:#3b82f6;border:1px solid rgba(59,130,246,.3)}
.btn-info:hover:not(:disabled){background:rgba(59,130,246,.2);color:#1d4ed8}
.btn-ghost{background:transparent;border:none;color:var(--text-muted);padding:.25rem .5rem;border-radius:var(--radius);cursor:pointer;transition:all .2s}
.btn-ghost:hover{background:var(--bg);color:var(--text)}
.btn-sm{padding:.35rem .75rem;font-size:.8rem}
.btn-icon{width:32px;height:32px;padding:0;border-radius:.5rem}
.btn-icon-lg{width:38px;height:38px;padding:0;border-radius:.625rem}
.btn.w-full{width:100%}

/* ── CARDS ─────────────────────────────── */
.card{background:white;border-radius:var(--radius-lg);box-shadow:0 1px 3px rgba(0,0,0,.07),0 1px 2px rgba(0,0,0,.04);border:1px solid var(--border)}
.card-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.card-title{font-size:1rem;font-weight:700;color:var(--text);display:flex;align-items:center;gap:.625rem;margin:0}
.card-title-accent{width:3px;height:18px;background:var(--primary);border-radius:2px;display:inline-block}
.card-body{padding:1.5rem}
.card-footer{padding:.75rem 1.5rem;border-top:1px solid var(--border);background:var(--bg);border-radius:0 0 var(--radius-lg) var(--radius-lg)}

/* ── STAT CARDS (avec variants) ────────── */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:1.5rem}
.stat-card{border-radius:var(--radius-lg);padding:1.375rem;color:white;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;transition:transform .2s}
.stat-card:hover{transform:translateY(-2px)}
.stat-card::after{content:'';position:absolute;top:-30px;right:-20px;width:80px;height:80px;border-radius:50%;background:rgba(255,255,255,.1)}
.stat-card-icon{width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:.875rem}
.stat-card-value{font-size:1.75rem;font-weight:800;line-height:1;margin-bottom:4px}
.stat-card-label{font-size:.75rem;opacity:.8;font-weight:500;text-transform:uppercase;letter-spacing:.05em}
.stat-card-sublabel{font-size:.7rem;opacity:.7;margin-top:.25rem}
.stat-card-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}
.stat-card-secondary{background:linear-gradient(135deg,var(--secondary),var(--secondary-dark))}
.stat-card-info{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.stat-card-warning{background:linear-gradient(135deg,#f59e0b,#d97706)}
.stat-card-danger{background:linear-gradient(135deg,#ef4444,#dc2626)}
.stat-card-purple{background:linear-gradient(135deg,#8b5cf6,#6d28d9)}
/* Aliases for backward compatibility with style.css naming */
.stat-card-gold{background:linear-gradient(135deg,#D4AF37,#B8960E)}
/* Alias for backward compatibility */
.stat-card-green{background:linear-gradient(135deg,#D4AF37,#B8960E)}
.stat-card-blue{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.stat-card-amber{background:linear-gradient(135deg,#f59e0b,#d97706)}
.stat-card-rose{background:linear-gradient(135deg,#f43f5e,#e11d48)}
.stat-card-cyan{background:linear-gradient(135deg,#06b6d4,#0891b2)}

/* ── TABLE ─────────────────────────────── */
.table-wrapper{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.table{width:100%;border-collapse:collapse;background:white;font-size:.875rem}
.table thead{background:var(--bg)}
.table th{padding:.75rem 1rem;text-align:left;font-weight:700;color:var(--text-muted);text-transform:uppercase;font-size:.7rem;letter-spacing:.05em;border-bottom:1px solid var(--border);white-space:nowrap;cursor:pointer;user-select:none}
.table th.sortable:hover{color:var(--primary)}
.table th.sort-asc::after{content:' \f077';font-family:'Font Awesome 6 Free';font-weight:900;font-size:.6rem;color:var(--primary)}
.table th.sort-desc::after{content:' \f078';font-family:'Font Awesome 6 Free';font-weight:900;font-size:.6rem;color:var(--primary)}
.table td{padding:.75rem 1rem;border-bottom:1px solid var(--border);color:var(--text)}
.table tbody tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:var(--bg)}

/* Table toolbar (search + pagination) */
.table-toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}
.table-search{position:relative;flex:1;max-width:320px}
.table-search i{position:absolute;left:.75rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:.85rem;pointer-events:none}
.table-search input{padding-left:2.25rem!important;width:100%}
.table-pagination{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted)}
.table-pagination button{background:none;border:1px solid var(--border);border-radius:var(--radius);padding:.3rem .6rem;cursor:pointer;font-size:.8rem;color:var(--text);transition:all .2s}
.table-pagination button:hover:not(:disabled){background:var(--bg);border-color:var(--primary)}
.table-pagination button:disabled{opacity:.4;cursor:not-allowed}
.table-pagination button.active{background:var(--primary);color:white;border-color:var(--primary)}
.table-empty{text-align:center;padding:3rem 1rem;color:var(--text-muted)}
.table-empty i{font-size:2.5rem;opacity:.4;margin-bottom:.5rem}
.table-loading{display:flex;align-items:center;justify-content:center;padding:3rem;gap:.75rem;color:var(--text-muted)}

/* ── MODAL ─────────────────────────────── */
.modal-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:100;backdrop-filter:blur(2px);align-items:center;justify-content:center;padding:1rem}
.modal-backdrop.active{display:flex}
.modal{background:white;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:500px;width:100%;max-height:90vh;overflow-y:auto;animation:modalIn .2s ease-out}
.modal-md{max-width:500px}
.modal-lg{max-width:800px}
.modal-sm{max-width:400px}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-title{font-size:1.1rem;font-weight:700;color:var(--text);display:flex;align-items:center;gap:.5rem;margin:0}
.modal-close{background:none;border:none;font-size:1.2rem;color:var(--text-muted);cursor:pointer;padding:.25rem .5rem;border-radius:var(--radius);transition:all .2s}
.modal-close:hover{background:var(--bg);color:var(--text)}
.modal-body{padding:1.5rem}
.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:.5rem;background:var(--bg);border-radius:0 0 var(--radius-lg) var(--radius-lg)}

/* ── TOAST ─────────────────────────────── */
#toast-container{position:fixed;bottom:1.5rem;right:1.5rem;z-index:200;display:flex;flex-direction:column;gap:.5rem;max-width:360px}
.toast{padding:.875rem 1.25rem;border-radius:var(--radius);box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:.75rem;font-size:.875rem;font-weight:500;animation:toastIn .3s ease-out;background:white;border-left:4px solid var(--primary);min-width:280px}
.toast-success{border-left-color:var(--primary)}
.toast-success i{color:var(--primary)}
.toast-error{border-left-color:var(--danger)}
.toast-error i{color:var(--danger)}
.toast-warning{border-left-color:var(--warning)}
.toast-warning i{color:var(--warning)}
.toast-info{border-left-color:var(--info)}
.toast-info i{color:var(--info)}
@keyframes toastIn{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}

/* ── BADGE ─────────────────────────────── */
.badge{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .625rem;border-radius:999px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-success{background:#FFF8E1;color:#4D3C00}
.badge-danger{background:#fee2e2;color:#991b1b}
.badge-warning{background:#fef3c7;color:#92400e}
.badge-info{background:#dbeafe;color:#1e40af}
.badge-gray{background:#f3f4f6;color:#4b5563}
.badge-purple{background:#f3e8ff;color:#6b21a8}

/* ── LOADER ────────────────────────────── */
.loading-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;gap:.75rem;color:var(--text-muted)}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}
.spinner-sm{width:16px;height:16px;border-width:2px}
@keyframes spin{to{transform:rotate(360deg)}}
.inline-loader{display:inline-flex;align-items:center;gap:.5rem;color:var(--text-muted);font-size:.85rem}

/* ── EMPTY STATE ───────────────────────── */
.empty-state{text-align:center;padding:3rem 1.5rem;color:var(--text-muted)}
.empty-state i{font-size:2.5rem;opacity:.5;margin-bottom:.5rem}
.empty-state p{margin-top:.75rem;font-size:.9rem}

/* ── FORMS ─────────────────────────────── */
.form-group{margin-bottom:1rem}
.form-label{display:block;font-size:.8rem;font-weight:600;color:var(--text);margin-bottom:.375rem}
.form-input,.form-select,.form-textarea{width:100%;padding:.625rem .875rem;border:1.5px solid var(--border);border-radius:var(--radius);font-size:.875rem;font-family:inherit;background:white;color:var(--text);transition:all .2s}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(212,175,55,.15)}
.form-input:disabled{background:var(--bg);cursor:not-allowed}
.form-select{cursor:pointer}
.form-textarea{resize:vertical;min-height:80px}
.form-select-sm{padding:.3rem .6rem;font-size:.75rem;width:auto;max-width:200px}
.form-hint{font-size:.75rem;color:var(--text-muted);margin-top:.25rem}

/* ── SIDEBAR UNIFIÉ (P4-04) ────────────── */
.sidebar{width:var(--sidebar-width);min-height:100vh;background:linear-gradient(180deg,var(--secondary) 0%,var(--secondary-dark) 100%);display:flex;flex-direction:column;flex-shrink:0;transition:width .25s cubic-bezier(.4,0,.2,1),transform .3s cubic-bezier(.4,0,.2,1);z-index:50;overflow:hidden;position:sticky;top:0;height:100vh}
.sidebar.collapsed{width:64px}
.sidebar.collapsed .logo-text-wrap,
.sidebar.collapsed .sidebar-user,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-chevron,
.sidebar.collapsed .sidebar-footer span{display:none}
.sidebar.collapsed .nav-item{justify-content:center;padding:.65rem}
.sidebar.collapsed .sidebar-collapse-btn i{transform:rotate(180deg)}
.sidebar-header{padding:1.25rem;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between}
.logo-container{display:flex;align-items:center;gap:.75rem;flex:1;min-width:0}
.logo-container img{height:36px;width:auto;background:white;padding:3px;border-radius:8px;flex-shrink:0}
.logo-text-wrap{flex:1;min-width:0}
.logo-text{font-size:1.3rem;font-weight:800;color:white;letter-spacing:-.02em;line-height:1}
.sidebar-collapse-btn{background:rgba(255,255,255,.1);border:none;color:rgba(255,255,255,.7);width:28px;height:28px;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
.sidebar-collapse-btn:hover{background:rgba(255,255,255,.2);color:white}
.sidebar-collapse-btn i{transition:transform .25s;font-size:.7rem}
.sidebar-user{margin:.5rem .75rem;padding:.5rem .75rem;border-radius:var(--radius);background:rgba(255,255,255,.05)}
.sidebar-nav{flex:1;padding:.5rem .75rem;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}
.sidebar-nav::-webkit-scrollbar{width:6px}
.sidebar-nav::-webkit-scrollbar-track{background:transparent}
.sidebar-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:3px}
.sidebar-nav::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.3)}
.nav-section-title{font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.35);padding:.75rem .75rem .35rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-item{display:flex;align-items:center;gap:.75rem;padding:.65rem .875rem;border-radius:var(--radius);color:rgba(255,255,255,.7);font-size:.875rem;font-weight:500;transition:all .2s;cursor:pointer;margin-bottom:2px;background:none;border:none;width:100%;text-align:left;white-space:nowrap;overflow:hidden}
.nav-item:hover{background:rgba(255,255,255,.1);color:white}
.nav-item.active{background:rgba(212,175,55,.25);color:#FFD54F;font-weight:600;border-left:3px solid #D4AF37}
.nav-item i{width:18px;text-align:center;flex-shrink:0}
.nav-item span{overflow:hidden;text-overflow:ellipsis}
.nav-item-logout{color:rgba(252,165,165,.8)!important}
.nav-item-logout:hover{background:rgba(239,68,68,.2)!important;color:#fca5a5!important}
.nav-parent{position:relative}
.nav-chevron{margin-left:auto;font-size:.7rem;transition:transform .2s;opacity:.7}
.nav-parent.expanded .nav-chevron{transform:rotate(180deg)}
.nav-submenu{padding-left:.5rem;overflow:hidden}
.nav-subitem{font-size:.8rem;padding:.5rem .75rem;opacity:.85}
.nav-subitem:hover{opacity:1}
.sidebar-footer{padding:.75rem;border-top:1px solid rgba(255,255,255,.08);margin-top:auto}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:40;backdrop-filter:blur(2px)}

/* ── SIDEBAR — COMPORTEMENT MOBILE/DESKTOP IDENTIQUE ── */
/* Mobile : sidebar off-canvas par défaut, s'ouvre en overlay */
@media(max-width:768px){
  .sidebar{position:fixed;top:0;left:0;height:100vh;transform:translateX(-100%);width:var(--sidebar-width)!important}
  .sidebar.open{transform:translateX(0);box-shadow:0 0 40px rgba(0,0,0,.4)}
  .sidebar.collapsed{width:var(--sidebar-width)!important}
  .sidebar.collapsed .logo-text-wrap,
  .sidebar.collapsed .sidebar-user,
  .sidebar.collapsed .nav-section-title,
  .sidebar.collapsed .nav-item span,
  .sidebar.collapsed .nav-chevron,
  .sidebar.collapsed .sidebar-footer span{display:block}
  .sidebar.collapsed .nav-item{justify-content:flex-start;padding:.65rem .875rem}
  .sidebar-overlay.active{display:block}
  .main-content.main-collapsed{margin-left:0!important}
}

/* Desktop : sidebar toujours visible, sticky */
@media(min-width:769px){
  .sidebar{position:sticky;top:0;height:100vh;transform:none!important}
  .sidebar.open{transform:none!important}
  .sidebar-overlay{display:none!important}
  .main-content{transition:margin-left .25s cubic-bezier(.4,0,.2,1)}
  .main-content.main-collapsed{margin-left:0}
}

/* ── TOPBAR ────────────────────────────── */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:.875rem 1.5rem;background:white;border-bottom:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.05);position:sticky;top:0;z-index:30}
.topbar-logo{display:flex;align-items:center;gap:.5rem}
.topbar-logo img{height:28px}
.topbar-logo span{font-weight:800;font-size:1.1rem;color:var(--secondary)}
.menu-btn{background:none;border:none;padding:.5rem;border-radius:.5rem;cursor:pointer;color:var(--text);font-size:1.2rem;display:flex;align-items:center;justify-content:center;transition:background .2s}
.menu-btn:hover{background:var(--bg)}
.topbar-actions{display:flex;align-items:center;gap:.5rem}

/* ── PRINT ─────────────────────────────── */
@media print{
  .sidebar,.sidebar-overlay,.topbar,.topbar-actions,.btn,.nav-item,.modal-backdrop,#toast-container,.page-header button,.export-dropdown,.menu-btn,.sidebar-collapse-btn{display:none!important}
  .main-content{margin:0!important}
  .page-content{padding:0!important}
  .card{box-shadow:none;border:1px solid #ccc;page-break-inside:avoid}
}