/* NOX30 Admin Panel - Styles */
:root {
    --bg-dark: #0f1115;
    --bg-card: #161920;
    --bg-sidebar: #111318;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --warning: #f59e0b;
    --border: #2a2e3a;
    --radius: 10px;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Flash Messages */
.flash {
    position: fixed; top: 20px; right: 20px; z-index: 9999;
    padding: 14px 24px; border-radius: var(--radius);
    font-weight: 500; box-shadow: var(--shadow);
    display: flex; align-items: center; gap: 12px;
    animation: slideIn 0.3s ease;
}
.flash-success { background: rgba(34,197,94,0.15); border: 1px solid var(--success); color: #86efac; }
.flash-error { background: rgba(239,68,68,0.15); border: 1px solid var(--danger); color: #fca5a5; }
.flash-close { cursor: pointer; font-size: 20px; opacity: 0.7; }
.flash-close:hover { opacity: 1; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Layout */
.wrapper { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    width: 260px; background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    position: fixed; height: 100vh; overflow-y: auto;
}
.sidebar-brand {
    padding: 24px 20px; border-bottom: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 4px;
}
.sidebar-brand i { font-size: 28px; color: var(--accent); }
.sidebar-brand span { font-size: 20px; font-weight: 800; letter-spacing: 1px; }
.sidebar-brand small { font-size: 11px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 2px; }
.sidebar-nav { padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border-radius: 8px;
    color: var(--text-secondary); text-decoration: none;
    font-size: 14px; font-weight: 500;
    transition: all 0.2s;
}
.sidebar-nav a:hover, .sidebar-nav a.active {
    background: rgba(139,92,246,0.12); color: var(--text-primary);
}
.sidebar-nav a.active { box-shadow: inset 3px 0 0 var(--accent); }
.sidebar-nav a i { width: 20px; text-align: center; }
.sidebar-divider { height: 1px; background: var(--border); margin: 12px 0; }
.text-danger { color: var(--danger) !important; }
.text-danger:hover { background: rgba(239,68,68,0.12) !important; color: #fca5a5 !important; }

/* Main Content */
.main-content { flex: 1; margin-left: 260px; display: flex; flex-direction: column; }
.topbar {
    padding: 20px 28px; background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
    position: sticky; top: 0; z-index: 100;
}
.topbar h1 { font-size: 22px; font-weight: 700; }
.topbar-user { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 14px; }
.content { padding: 28px; }

/* Login */
.login-wrapper {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #0f1115 0%, #1a1033 100%);
}
.login-box {
    background: var(--bg-card); padding: 40px; border-radius: var(--radius);
    border: 1px solid var(--border); width: 100%; max-width: 420px;
    box-shadow: var(--shadow);
}
.login-box h2 { text-align: center; margin-bottom: 8px; font-size: 26px; }
.login-box p { text-align: center; color: var(--text-secondary); margin-bottom: 28px; font-size: 14px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.form-control {
    width: 100%; padding: 12px 14px; background: var(--bg-dark);
    border: 1px solid var(--border); border-radius: 8px;
    color: var(--text-primary); font-size: 14px;
    transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: var(--accent); }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 20px; border-radius: 8px; border: none;
    font-size: 14px; font-weight: 600; cursor: pointer;
    transition: all 0.2s; text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-secondary { background: var(--border); color: var(--text-primary); }
.btn-secondary:hover { background: #3a3f4d; }
.btn-sm { padding: 8px 14px; font-size: 12px; }
.btn-block { width: 100%; }

/* Stats Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 28px; }
.stat-card {
    background: var(--bg-card); padding: 22px; border-radius: var(--radius);
    border: 1px solid var(--border); display: flex; align-items: center; gap: 16px;
    transition: transform 0.2s;
}
.stat-card:hover { transform: translateY(-3px); }
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.stat-icon.purple { background: rgba(139,92,246,0.15); color: #a78bfa; }
.stat-icon.green { background: rgba(34,197,94,0.15); color: #86efac; }
.stat-icon.blue { background: rgba(59,130,246,0.15); color: #93c5fd; }
.stat-icon.red { background: rgba(239,68,68,0.15); color: #fca5a5; }
.stat-info h3 { font-size: 26px; font-weight: 800; }
.stat-info span { font-size: 13px; color: var(--text-secondary); }

/* Tables */
.table-container { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
.table-header {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
}
.table-header h3 { font-size: 16px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table thead { background: rgba(255,255,255,0.02); }
.data-table th { padding: 14px 20px; text-align: left; font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
.data-table td { padding: 14px 20px; border-bottom: 1px solid var(--border); color: var(--text-primary); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.data-table img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }
.badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 10px; border-radius: 20px; font-size: 11px; font-weight: 600;
}
.badge-success { background: rgba(34,197,94,0.15); color: #86efac; }
.badge-danger { background: rgba(239,68,68,0.15); color: #fca5a5; }

/* Search */
.search-box { display: flex; gap: 10px; margin-bottom: 20px; }
.search-box .form-control { max-width: 320px; }

/* Pagination */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 20px; }
.pagination a, .pagination span {
    padding: 8px 14px; border-radius: 6px; border: 1px solid var(--border);
    color: var(--text-secondary); text-decoration: none; font-size: 13px;
}
.pagination a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination .active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* User Detail */
.user-detail-grid { display: grid; grid-template-columns: 320px 1fr; gap: 24px; }
.user-card {
    background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border);
    padding: 28px; text-align: center;
}
.user-card img {
    width: 120px; height: 120px; border-radius: 50%; object-fit: cover;
    border: 3px solid var(--accent); margin-bottom: 16px;
}
.user-card h2 { font-size: 22px; margin-bottom: 4px; }
.user-card .user-id { font-size: 12px; color: var(--text-secondary); margin-bottom: 20px; word-break: break-all; }
.user-meta { display: flex; flex-direction: column; gap: 10px; text-align: left; }
.user-meta-item { display: flex; justify-content: space-between; font-size: 14px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.user-meta-item:last-child { border-bottom: none; }
.user-meta-item span:first-child { color: var(--text-secondary); }
.user-meta-item span:last-child { font-weight: 600; }

.user-form { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); padding: 28px; }
.user-form h3 { margin-bottom: 20px; font-size: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 10px; margin-top: 24px; justify-content: flex-end; }

/* Messages */
.messages-list { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); }
.message-item {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; gap: 14px; align-items: flex-start;
}
.message-item:last-child { border-bottom: none; }
.message-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.message-content { flex: 1; }
.message-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.message-author { font-weight: 600; font-size: 14px; }
.message-time { font-size: 12px; color: var(--text-secondary); }
.message-text { font-size: 14px; color: var(--text-secondary); line-height: 1.5; word-break: break-word; }
.message-badge { font-size: 10px; padding: 2px 8px; border-radius: 4px; margin-left: 8px; }
.badge-sent { background: rgba(139,92,246,0.15); color: #a78bfa; }
.badge-received { background: rgba(34,197,94,0.15); color: #86efac; }

/* Tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
    padding: 10px 18px; color: var(--text-secondary); font-size: 14px;
    border-bottom: 2px solid transparent; cursor: pointer; text-decoration: none;
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* Responsive */
@media (max-width: 1024px) {
    .sidebar { width: 220px; }
    .main-content { margin-left: 220px; }
    .user-detail-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); position: fixed; z-index: 200; }
    .main-content { margin-left: 0; }
    .stats-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}