/* سامانه ثبت‌نام آزمون — پوسته پنل (گرادیان آبی، فونت وزیر) */
:root{
  --primary-900:#1e3a8a;--primary-800:#1e40af;--primary-700:#1d4ed8;--primary-600:#2563eb;--primary-500:#3b82f6;--primary-400:#60a5fa;--primary-050:rgba(59,130,246,.10);
  --accent-500:#facc15;--accent-100:#fef08a;--accent-text:#1e40af;
  --red:#dc2626;--green:#059669;--green-bg:#ecfdf5;--amber:#b45309;--amber-bg:#fffbeb;--info:#0284c7;--info-bg:#eff6ff;--danger-bg:#fef2f2;
  --bg-page:#f4f7fa;--bg-card:#fff;--text-strong:#1f2937;--text-body:#4b5563;--text-muted:#6b7280;--border:#e5e7eb;
  --sidebar-w:264px;--topbar-h:70px;--radius:16px;--radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(30,58,138,.06);--shadow-md:0 6px 18px rgba(30,58,138,.10);--shadow-lg:0 16px 48px rgba(30,58,138,.20);
  --grad-primary:linear-gradient(135deg,#1e3a8a,#3b82f6);--grad-sidebar:linear-gradient(180deg,#1e3a8a,#3b82f6);--grad-accent:linear-gradient(135deg,#facc15,#fef08a);
  --fs-xs:.75rem;--fs-sm:.85rem;--fs-base:.95rem;--fs-lg:1.1rem;--fs-xl:1.35rem;--fs-2xl:1.75rem;
  --font:'Vazir',system-ui,'Segoe UI',Tahoma,sans-serif;
}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body,button,input,select,textarea,.btn,.form-control,.form-select{font-family:var(--font)}
body{font-size:var(--fs-base);color:var(--text-body);background:var(--bg-page);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--primary-600);text-decoration:none}a:hover{color:var(--primary-700)}
.app-shell{display:flex;min-height:100vh}
.app-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;margin-right:var(--sidebar-w)}
.app-content{padding:28px;flex:1 1 auto}
.app-sidebar{position:fixed;top:0;right:0;width:var(--sidebar-w);height:100vh;background:var(--grad-sidebar);color:#fff;display:flex;flex-direction:column;z-index:1040;box-shadow:-4px 0 18px rgba(30,58,138,.18)}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:18px 22px;height:var(--topbar-h);border-bottom:1px solid rgba(255,255,255,.14)}
.brand-mark{width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:rgba(255,255,255,.16);display:grid;place-items:center;color:#fff;font-size:1.3rem}
.brand-text{display:flex;flex-direction:column;line-height:1.4}
.brand-title{color:#fff;font-weight:700;font-size:1.05rem}.brand-sub{color:rgba(255,255,255,.7);font-size:var(--fs-xs)}
.sidebar-nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px}
.sidebar-nav ul{list-style:none;margin:0;padding:0}.sidebar-nav li{margin-bottom:6px}
.sidebar-nav .nav-link{display:flex;align-items:center;gap:13px;padding:11px 16px;border-radius:0 12px 12px 0;color:rgba(255,255,255,.9);font-size:var(--fs-sm);font-weight:500;transition:background .25s,color .25s,transform .15s}
.sidebar-nav .nav-link i{font-size:1.05rem;width:20px;text-align:center}
.sidebar-nav .nav-link:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateX(-3px)}
.sidebar-nav .nav-link.is-active{background:var(--grad-accent);color:var(--accent-text);font-weight:700;box-shadow:0 4px 12px rgba(250,204,21,.35)}
.sidebar-footer{padding:14px 22px;border-top:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.7)}
.app-topbar{height:var(--topbar-h);background:var(--grad-primary);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:1030;box-shadow:var(--shadow-md)}
.topbar-right,.topbar-left{display:flex;align-items:center;gap:16px}
.topbar-title{font-size:var(--fs-lg);font-weight:700;color:#fff;margin:0}
.topbar-date{display:inline-flex;align-items:center;gap:7px;font-size:var(--fs-sm);color:#fff;background:rgba(255,255,255,.15);padding:7px 14px;border-radius:999px}
.btn-icon{width:42px;height:42px;border:none;background:rgba(255,255,255,.15);border-radius:10px;display:grid;place-items:center;color:#fff;font-size:1.1rem;cursor:pointer;transition:background .2s}
.btn-icon:hover{background:rgba(255,255,255,.28)}.sidebar-toggle{display:none}
.topbar-user .user-chip{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.12);border:none;border-radius:999px;padding:5px 12px 5px 8px;cursor:pointer;color:#fff;transition:background .2s}
.topbar-user .user-chip:hover{background:rgba(255,255,255,.24)}
.user-avatar{width:38px;height:38px;border-radius:50%;background:var(--grad-accent);color:var(--accent-text);display:grid;place-items:center;font-weight:700}
.user-meta{display:flex;flex-direction:column;line-height:1.3;text-align:right}
.user-name{font-size:var(--fs-sm);font-weight:600;color:#fff}.user-role{font-size:var(--fs-xs);color:rgba(255,255,255,.75)}
.topbar-user .dropdown-menu{border:none;box-shadow:var(--shadow-md);border-radius:12px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.card-header{padding:16px 20px;border-bottom:1px solid var(--border);font-weight:700;color:var(--text-strong);display:flex;align-items:center;justify-content:space-between;background:transparent}
.card-header i{color:var(--primary-600)}.card-body{padding:20px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:26px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:16px;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.stat-card::before{content:"";position:absolute;top:0;right:0;width:5px;height:100%;background:var(--grad-primary)}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.stat-icon{width:56px;height:56px;flex:0 0 56px;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;color:#fff}
.stat-icon.teal{background:var(--grad-primary)}.stat-icon.blue{background:linear-gradient(135deg,#2563eb,#60a5fa)}
.stat-icon.green{background:linear-gradient(135deg,#059669,#34d399)}.stat-icon.amber{background:linear-gradient(135deg,#d97706,#fbbf24)}
.stat-meta{display:flex;flex-direction:column}
.stat-value{font-size:var(--fs-2xl);font-weight:800;color:var(--primary-800);line-height:1.2}
.stat-label{font-size:var(--fs-sm);color:var(--text-muted)}
.table-wrap{width:100%;overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse;font-size:var(--fs-sm)}
table.data-table thead th{text-align:right;padding:13px 14px;background:#f0f4fa;color:var(--primary-800);font-weight:700;white-space:nowrap;border-bottom:2px solid var(--border)}
table.data-table tbody td{padding:13px 14px;border-bottom:1px solid #f1f5f9;color:var(--text-body);vertical-align:middle}
table.data-table tbody tr:hover td{background:#f8fafc}table.data-table tbody tr:last-child td{border-bottom:none}
.badge-status{display:inline-flex;align-items:center;gap:5px;font-size:var(--fs-xs);font-weight:700;padding:5px 12px;border-radius:999px;white-space:nowrap}
.badge-status.paid{background:var(--green-bg);color:var(--green)}.badge-status.pending{background:var(--amber-bg);color:var(--amber)}
.badge-status.failed,.badge-status.expired{background:var(--danger-bg);color:var(--red)}.badge-status.draft{background:#f1f5f9;color:#64748b}
.btn{border-radius:var(--radius-sm);font-weight:600}
.btn-primary{background:var(--grad-primary);border:none;box-shadow:0 4px 12px rgba(37,99,235,.25);transition:filter .2s,transform .15s}
.btn-primary:hover,.btn-primary:focus{background:var(--grad-primary);filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-800)}
.btn-outline-primary{color:var(--primary-700);border:1px solid var(--primary-500);background:transparent}
.btn-outline-primary:hover{background:var(--primary-600);border-color:var(--primary-600);color:#fff}
.btn-xs{width:32px;height:32px;font-size:.9rem;border-radius:9px;padding:0;display:inline-grid;place-items:center}
.form-label{font-size:var(--fs-sm);font-weight:600;color:#374151;margin-bottom:6px}
.form-control,.form-select{border-radius:var(--radius-sm);border:1px solid #d1d5db;padding:11px 14px;font-size:var(--fs-base);transition:border-color .2s,box-shadow .2s}
.form-control:focus,.form-select:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px var(--primary-050)}
.input-group-text{background:#f0f4fa;border:1px solid #d1d5db;color:var(--primary-700);border-radius:var(--radius-sm)}
.select2-container--bootstrap-5 .select2-selection{border-radius:var(--radius-sm);min-height:46px}
.auth-body{min-height:100vh;margin:0;display:grid;place-items:center;padding:24px;background:var(--grad-primary);background-size:cover;background-position:center}
.auth-card{width:100%;max-width:420px;background:var(--bg-card);border-radius:22px;box-shadow:var(--shadow-lg);padding:40px 34px}
.auth-logo{width:66px;height:66px;margin:0 auto 16px;border-radius:18px;background:var(--grad-primary);display:grid;place-items:center;color:#fff;font-size:1.9rem;box-shadow:0 8px 22px rgba(37,99,235,.4)}
.auth-title{text-align:center;font-size:var(--fs-xl);font-weight:800;color:var(--text-strong);margin:0 0 4px}
.auth-sub{text-align:center;font-size:var(--fs-sm);color:var(--text-muted);margin:0 0 26px}
.error-page{display:grid;place-items:center;text-align:center;padding:60px 20px}
.error-code{font-size:4rem;font-weight:800;color:var(--primary-600);line-height:1}
.error-msg{font-size:var(--fs-lg);color:var(--text-strong);margin:12px 0 4px}
.alert{border-radius:var(--radius-sm);border:none;font-size:var(--fs-sm);margin-bottom:18px}
.alert-success{background:var(--green-bg);color:var(--green)}.alert-danger{background:var(--danger-bg);color:var(--red)}.alert-info{background:var(--info-bg);color:var(--info)}
.pagination{--bs-pagination-color:#475569;--bs-pagination-active-bg:var(--primary-600);--bs-pagination-active-border-color:var(--primary-600)}
.dataTables_wrapper .dataTables_paginate .paginate_button.current{background:var(--primary-600)!important;color:#fff!important;border-radius:8px;border:none}
.dataTables_wrapper .dataTables_filter input,.dataTables_wrapper .dataTables_length select{border:1px solid #d1d5db;border-radius:8px;padding:6px 10px}
.public-body{background:var(--bg-page);min-height:100vh;display:flex;flex-direction:column}
.public-container{width:100%;max-width:960px;margin:0 auto;padding-inline:20px}
.public-header{background:var(--grad-primary);color:#fff;padding:16px 0;position:sticky;top:0;z-index:1020;box-shadow:var(--shadow-md)}
.public-header .public-container{display:flex;align-items:center;justify-content:space-between;gap:12px}
.public-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:#fff}.public-brand:hover{color:#fff;opacity:.92}
.public-brand .brand-mark{width:40px;height:40px;flex:0 0 40px}
.public-header .btn-outline-primary{color:#fff;border-color:rgba(255,255,255,.6)}
.public-header .btn-outline-primary:hover{background:#fff;color:var(--primary-700);border-color:#fff}
.public-main{flex:1 1 auto;padding-block:28px}
.public-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:16px 0;margin-top:30px;text-align:center}
.page-head{margin-bottom:22px}
.page-head h2{font-size:var(--fs-xl);font-weight:800;color:var(--text-strong);margin:0 0 2px}
.page-head p{font-size:var(--fs-sm);color:var(--text-muted);margin:0}
.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}
.empty-state i{font-size:2.4rem;color:#cbd5e1;display:block;margin-bottom:10px}
.choice-group{display:flex;flex-wrap:wrap;gap:8px 20px}.jalali-date .form-select{min-width:0}
.sidebar-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.5);opacity:0;visibility:hidden;transition:opacity .2s;z-index:1039}
@media(max-width:991.98px){.app-main{margin-right:0}.app-sidebar{transform:translateX(100%);transition:transform .25s}.sidebar-toggle{display:grid}.app-shell.sidebar-open .app-sidebar{transform:translateX(0)}.app-shell.sidebar-open .sidebar-backdrop{opacity:1;visibility:visible}.stat-grid{grid-template-columns:repeat(2,1fr)}.app-content{padding:20px 16px}.topbar-date{display:none}}
@media(max-width:575.98px){.stat-grid{grid-template-columns:1fr}.user-meta{display:none}.app-topbar{padding:0 14px}}
:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.sidebar-nav .nav-group{margin-bottom:4px}
.sidebar-nav .nav-group-toggle{display:flex;align-items:center;gap:13px;width:100%;padding:10px 16px;border:0;background:transparent;color:rgba(255,255,255,.72);font-family:inherit;font-size:var(--fs-xs,.82rem);font-weight:700;letter-spacing:.2px;border-radius:0 12px 12px 0;cursor:pointer;transition:background .2s,color .2s}
.sidebar-nav .nav-group-toggle i:first-child{font-size:1rem;width:20px;text-align:center}
.sidebar-nav .nav-group-toggle .caret{margin-right:auto;font-size:.7rem;transition:transform .25s}
.sidebar-nav .nav-group-toggle:hover{background:rgba(255,255,255,.08);color:#fff}
.sidebar-nav .nav-group.is-open>.nav-group-toggle{color:#fff}
.sidebar-nav .nav-group.is-open>.nav-group-toggle .caret{transform:rotate(180deg)}
.sidebar-nav .nav-group-items{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0;margin:0;list-style:none}
.sidebar-nav .nav-group.is-open>.nav-group-items{max-height:520px}
.sidebar-nav .nav-group-items .nav-link{padding-right:30px;font-size:var(--fs-sm)}
.sidebar-nav .nav-group-items li{margin-bottom:4px}