* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: #0f172a; color: #e2e8f0; min-height: 100vh; }
.admin-login { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #0f172a, #1e3a5f); }
.admin-card { background: #fff; color: #1e293b; border-radius: 16px; padding: 40px; width: 100%; max-width: 420px; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.admin-card h1 { font-size: 24px; margin-bottom: 8px; color: #0f172a; }
.admin-card p { color: #64748b; margin-bottom: 24px; font-size: 14px; }
.admin-card input { width: 100%; padding: 12px 14px; margin-bottom: 12px; border: 1px solid #cbd5e1; border-radius: 8px; font-size: 14px; }
.admin-card button { width: 100%; padding: 12px; background: #2563eb; color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; }
.admin-card button:hover { background: #1d4ed8; }
.admin-card .error { color: #dc2626; font-size: 13px; margin-bottom: 12px; }
.admin-logo { width: 120px; height: 120px; object-fit: contain; border-radius: 12px; margin-bottom: 16px; }

.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 240px; background: #1e293b; padding: 20px 0; flex-shrink: 0; }
.admin-sidebar .brand { padding: 0 20px 20px; border-bottom: 1px solid #334155; margin-bottom: 16px; }
.admin-sidebar .brand img { width: 40px; height: 40px; border-radius: 8px; }
.admin-sidebar .brand span { color: #fff; font-size: 18px; font-weight: 700; margin-left: 10px; vertical-align: middle; }
.admin-sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 0 12px; }
.admin-sidebar nav button { background: transparent; color: #94a3b8; border: none; padding: 10px 12px; text-align: left; border-radius: 6px; cursor: pointer; font-size: 14px; display: flex; align-items: center; gap: 10px; }
.admin-sidebar nav button:hover { background: #334155; color: #fff; }
.admin-sidebar nav button.active { background: #2563eb; color: #fff; }
.admin-sidebar .user-info { padding: 16px 20px; border-top: 1px solid #334155; margin-top: auto; font-size: 12px; color: #94a3b8; }
.admin-sidebar .user-info strong { color: #fff; display: block; }

.admin-main { flex: 1; padding: 24px 32px; overflow-y: auto; }
.admin-main h1 { font-size: 24px; margin-bottom: 20px; color: #f1f5f9; }
.admin-main h2 { font-size: 18px; margin: 20px 0 12px; color: #e2e8f0; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #1e293b; border-radius: 12px; padding: 20px; }
.stat-card .label { color: #94a3b8; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.stat-card .value { font-size: 28px; font-weight: 700; color: #fff; margin-top: 4px; }
.stat-card .sub { color: #64748b; font-size: 12px; margin-top: 4px; }

.admin-table { background: #1e293b; border-radius: 12px; overflow: hidden; }
.admin-table table { width: 100%; border-collapse: collapse; }
.admin-table th { background: #334155; color: #94a3b8; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; padding: 12px 16px; text-align: left; }
.admin-table td { padding: 12px 16px; border-top: 1px solid #334155; font-size: 14px; }
.admin-table tr:hover td { background: #253349; }
.admin-table .actions { display: flex; gap: 8px; }
.admin-table .btn-sm { padding: 4px 10px; font-size: 12px; border: none; border-radius: 4px; cursor: pointer; }
.btn-primary { background: #2563eb; color: #fff; }
.btn-danger { background: #dc2626; color: #fff; }
.btn-success { background: #16a34a; color: #fff; }
.btn-secondary { background: #475569; color: #fff; }
.badge { padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.badge-active { background: #16a34a33; color: #4ade80; }
.badge-suspended { background: #dc262633; color: #f87171; }
.badge-cancelled { background: #6b728033; color: #9ca3af; }

.admin-form { background: #1e293b; border-radius: 12px; padding: 24px; max-width: 600px; }
.admin-form label { display: block; color: #94a3b8; font-size: 13px; margin-bottom: 4px; margin-top: 12px; }
.admin-form input, .admin-form select, .admin-form textarea { width: 100%; padding: 10px 12px; background: #0f172a; border: 1px solid #334155; border-radius: 6px; color: #e2e8f0; font-size: 14px; }
.admin-form button { margin-top: 20px; padding: 10px 20px; background: #2563eb; color: #fff; border: none; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; }
.admin-form .row { display: flex; gap: 12px; }
.admin-form .row > * { flex: 1; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.detail-card { background: #1e293b; border-radius: 12px; padding: 20px; }
.detail-card h3 { color: #94a3b8; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 12px; }
.detail-card .item { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid #334155; font-size: 14px; }
.detail-card .item:last-child { border-bottom: none; }
.detail-card .item .label { color: #64748b; }
.detail-card .item .value { color: #e2e8f0; font-weight: 500; }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: #1e293b; border-radius: 12px; padding: 24px; width: 90%; max-width: 500px; }
.modal h2 { margin-bottom: 16px; color: #f1f5f9; }
.modal .close { position: absolute; top: 12px; right: 12px; background: none; border: none; color: #94a3b8; font-size: 20px; cursor: pointer; }

.empty { text-align: center; padding: 40px; color: #64748b; }
.loading { text-align: center; padding: 40px; color: #94a3b8; }

.chat-container { background: #1e293b; border-radius: 12px; padding: 16px; max-height: 400px; overflow-y: auto; }
.chat-msg { padding: 8px 12px; margin: 4px 0; border-radius: 8px; max-width: 80%; }
.chat-msg.user { background: #2563eb; color: #fff; margin-left: auto; }
.chat-msg.support { background: #334155; color: #e2e8f0; }
.chat-input { display: flex; gap: 8px; margin-top: 12px; }
.chat-input input { flex: 1; padding: 10px; background: #0f172a; border: 1px solid #334155; border-radius: 6px; color: #e2e8f0; }
.chat-input button { padding: 10px 20px; background: #2563eb; color: #fff; border: none; border-radius: 6px; cursor: pointer; }