:root {
    --primary-green: #1E3A07;
    --accent-orange: #EF9825;
    --bg-white: #FFFFFF;
    --text-dark: #333333;
    --text-light: #777777;
    --gray-light: #f4f4f4;
    --border-color: #dddddd;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-white);
    color: var(--text-dark);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Global Loading Spinner */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s, opacity 0.3s linear;
}

#loading-overlay.active {
    visibility: visible;
    opacity: 1;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--gray-light);
    border-top: 5px solid var(--primary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    border: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-green);
    color: white;
}

.btn-primary:hover {
    background-color: #2a520a;
}

.btn-accent {
    background-color: var(--accent-orange);
    color: white;
}

.btn-accent:hover {
    background-color: #d9861f;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 20px;
    border-radius: 10px;
    width: 50%;
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow);
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

/* Tables (DataTable-like) */
.table-container {
    overflow-x: auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background-color: var(--gray-light);
    font-weight: 600;
}

table tr:hover {
    background-color: #f9f9f9;
}

/* Sidebar for Admin */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--primary-green);
    color: white;
    padding: 20px;
    transition: width 0.3s;
}

.sidebar h2 {
    margin-bottom: 30px;
    font-size: 1.2rem;
    text-align: center;
}

.sidebar-nav li {
    margin-bottom: 10px;
}

.sidebar-nav a {
    display: block;
    padding: 12px 15px;
    border-radius: 5px;
    transition: background 0.3s;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--accent-orange);
}

.main-content {
    flex: 1;
    background-color: var(--gray-light);
    padding: 30px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.notification-bell {
    position: relative;
    cursor: pointer;
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: red;
    color: white;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 10px;
}