body { background-color: #e3d59766; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.admin-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar { width: 250px; background: #ffffff; color: rgb(0, 0, 0); padding: 20px 0; display: flex; flex-direction: column; }
.sidebar-brand { text-align: center; font-size: 24px; font-weight: bold; letter-spacing: 2px; margin-bottom: 30px; }
.sidebar-menu { list-style: none; padding: 0; margin: 0; }
.sidebar-menu li { padding: 15px 25px; cursor: pointer; transition: 0.3s; border-left: 4px solid transparent; }
.sidebar-menu li:hover, .sidebar-menu li.active { background: #e3d59772; border-left-color: #fff; }
.logout-btn { margin-top: auto; padding: 15px 25px; color: #000000; cursor: pointer; }

/* Main Content */
.main-content { flex: 1; padding: 30px; overflow-y: auto; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.btn-primary { background: #000; color: #fff; border: none; padding: 10px 20px; cursor: pointer; border-radius: 4px; }

/* Tables */
.data-table { width: 100%; background: #fff; border-collapse: collapse; box-shadow: 0 2px 10px rgba(0,0,0,0.05); border-radius: 8px; overflow: hidden; }
.data-table th, .data-table td { padding: 15px; text-align: left; border-bottom: 1px solid #eee; }
.data-table th { background: #f9f9f9; font-weight: 600; text-transform: uppercase; font-size: 12px; }
.data-table tr:hover { background: #fdfdfd; }

/* Badges */
.badge { padding: 5px 10px; border-radius: 20px; font-size: 12px; font-weight: bold; }
.badge.paid { background: #d4edda; color: #155724; }
.badge.pending { background: #fff3cd; color: #856404; }

/* Modal Form */
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); justify-content: center; align-items: center; }
.modal.active { display: flex; }
.modal-content { background: #fff; padding: 30px; border-radius: 8px; width: 500px; max-height: 90vh; overflow-y: auto; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; font-size: 14px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.btn-cancel { background: #ccc; border: none; padding: 10px 20px; cursor: pointer; border-radius: 4px; }

/* Panels */
.panel { display: none; }
.panel.active { display: block; }