:root {
    --bg-color: #121212;
    --sidebar-bg: #1E1E1E;
    --card-bg: #1E1E1E;
    --primary: #1CB58E;
    --primary-hover: #159c7a;
    --text-main: #FFFFFF;
    --text-muted: #A0A0A0;
    --border-color: #2C2C2C;
    --accent: #E8A317;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.sidebar-header {
    padding: 24px;
    font-size: 22px;
    font-weight: bold;
    color: var(--primary);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-menu {
    list-style: none;
    padding: 16px 0;
    flex-grow: 1;
}

.sidebar-menu li {
    padding: 10px 24px;
}

.sidebar-menu a {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    font-size: 15px;
    transition: 0.3s ease;
    padding: 10px 16px;
    border-radius: 8px;
}

.sidebar-menu a i {
    margin-right: 12px;
    font-size: 18px;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background-color: var(--primary);
    color: white;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    margin-left: 260px;
    padding: 32px;
    width: calc(100% - 260px);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.topbar h1 {
    font-size: 28px;
    font-weight: 600;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--card-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: bold;
    margin-top: 8px;
}

.stat-card .stat-title {
    color: var(--text-muted);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-icon {
    background: rgba(28, 181, 142, 0.1);
    color: var(--primary);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    font-weight: 600;
}

td {
    font-size: 14px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.form-control {
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 15px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s ease;
    font-weight: 600;
}

.btn:hover {
    background: var(--primary-hover);
}

.btn-danger {
    background: #e74c3c;
}
.btn-danger:hover {
    background: #c0392b;
}

.action-btns {
    display: flex;
    gap: 8px;
}
.action-btns a {
    padding: 6px 10px;
    border-radius: 4px;
    color: white;
    text-decoration: none;
    font-size: 12px;
}
.bg-edit { background: var(--primary); }
.bg-delete { background: #e74c3c; }