* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #f0f2f5; color: #333; }
a { text-decoration: none; color: inherit; }

.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #00b38a; }
.login-box { background: #fff; padding: 40px; border-radius: 16px; box-shadow: 0 8px 32px rgba(0,0,0,0.15); width: 380px; }
.login-box h1 { color: #00b38a; font-size: 24px; text-align: center; }
.login-sub { text-align: center; color: #999; margin-bottom: 24px; }

.manage-layout { display: flex; min-height: 100vh; }
.sidebar { width: 200px; background: #001529; color: #fff; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 10; }
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-logo { color: #00b38a !important; font-size: 18px; font-weight: bold; display: block; }
.sidebar-sub { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 4px; display: block; }
.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.side-item { display: block; padding: 10px 20px; color: rgba(255,255,255,0.7); font-size: 14px; transition: 0.2s; }
.side-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar-footer { border-top: 1px solid rgba(255,255,255,0.1); padding: 12px 0; }
.logout { color: #ff4d4f !important; }

.manage-main { margin-left: 200px; flex: 1; padding: 24px 32px; min-height: 100vh; }
.manage-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.manage-header h2 { font-size: 22px; }
.back-link { color: #00b38a; font-size: 14px; }

.messages { margin-bottom: 16px; }
.message { padding: 10px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 8px; }
.message.success { background: #f6ffed; border: 1px solid #b7eb8f; color: #52c41a; }
.message.error { background: #fff2f0; border: 1px solid #ffccc7; color: #ff4d4f; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }
.stat-card { background: #fff; padding: 24px; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); text-align: center; }
.stat-number { font-size: 36px; font-weight: bold; color: #00b38a; }
.stat-label { color: #999; margin: 4px 0 12px; font-size: 14px; }
.stat-link { color: #00b38a; font-size: 13px; }

.toolbar { margin-bottom: 16px; }

.btn-primary { display: inline-block; padding: 8px 20px; background: #00b38a; color: #fff !important; border: none; border-radius: 6px; font-size: 14px; cursor: pointer; }
.btn-primary:hover { background: #009a75; }
.btn-sm { display: inline-block; padding: 4px 12px; background: #e8f5e9; color: #00b38a !important; border: none; border-radius: 4px; font-size: 12px; cursor: pointer; }
.btn-sm:hover { background: #d0edcf; }
.btn-danger { background: #fff2f0 !important; color: #ff4d4f !important; }
.btn-danger:hover { background: #ffccc7 !important; }
.btn-cancel { display: inline-block; padding: 8px 20px; background: #f0f0f0; color: #666 !important; border: none; border-radius: 6px; font-size: 14px; cursor: pointer; }
.btn-full { width: 100%; padding: 12px; font-size: 16px; }
.btn-full:hover { background: #009a75; }

.table { width: 100%; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border-collapse: collapse; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #f0f0f0; font-size: 14px; }
.table th { background: #fafafa; color: #666; font-weight: 500; }
.table tr:hover { background: #fafafa; }
.actions { display: flex; gap: 8px; }
.empty { text-align: center; color: #999; padding: 40px !important; }
.thumb { width: 60px; height: 40px; object-fit: cover; border-radius: 4px; }

.form { background: #fff; padding: 24px; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); max-width: 800px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; color: #333; margin-bottom: 6px; font-weight: 500; }
.form-group input[type="text"], .form-group input[type="number"], .form-group input[type="password"], .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 1px solid #d9d9d9; border-radius: 6px; font-size: 14px; outline: none; transition: 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: #00b38a; box-shadow: 0 0 0 2px rgba(0,179,138,0.1); }
.form-group small { display: block; color: #999; font-size: 12px; margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 12px; margin-top: 24px; }
.checkbox-group { display: flex; flex-direction: column; gap: 8px; justify-content: flex-end; padding-bottom: 4px; }
.checkbox-label { display: flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.checkbox-label input { width: auto !important; }

.file-preview { margin-top: 8px; }
.file-preview img { max-width: 200px; max-height: 120px; border-radius: 6px; border: 1px solid #f0f0f0; }

.gallery-manage { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 8px; }
.gallery-item { position: relative; width: 100px; height: 100px; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; }
.gallery-del { position: absolute; top: -6px; right: -6px; width: 22px; height: 22px; background: #ff4d4f; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; }

.confirm-box { background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); max-width: 480px; }
.confirm-box p { font-size: 16px; margin-bottom: 24px; }

.modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.45); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-content { background: #fff; padding: 24px; border-radius: 12px; width: 420px; max-width: 90vw; }
.modal-content h3 { margin-bottom: 16px; }