:root {
    --admin-primary: #1e293b; /* Dark Slate */
    --admin-secondary: #3b82f6; /* Blue */
    --admin-bg: #f1f5f9;
    --admin-white: #ffffff;
    --admin-text: #334155;
    --admin-border: #e2e8f0;
    --admin-danger: #ef4444;
}

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

/* Sidebar */
.admin-sidebar {
    width: 250px;
    background-color: var(--admin-primary);
    color: var(--admin-white);
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-sidebar .logo {
    color: var(--admin-white);
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.admin-nav {
    list-style: none;
}

.admin-nav li a {
    display: block;
    padding: 15px 20px;
    color: #cbd5e1;
    transition: all 0.3s;
}

.admin-nav li a:hover,
.admin-nav li a.active {
    background-color: rgba(255,255,255,0.1);
    color: var(--admin-white);
    border-left: 4px solid var(--admin-secondary);
}

.admin-nav li a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: 250px;
    padding: 30px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--admin-border);
}

/* Forms & Tables */
.admin-card {
    background: var(--admin-white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

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

.btn-admin {
    background: var(--admin-secondary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.btn-admin:hover {
    background: #2563eb;
}

.btn-danger {
    background: var(--admin-danger);
}

.btn-danger:hover {
    background: #dc2626;
}

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

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

.admin-table th {
    background-color: #f8fafc;
    font-weight: 600;
}

/* Login Page specific */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--admin-bg);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box .logo {
    margin-bottom: 30px;
    justify-content: center;
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
        z-index: 1000;
    }
    .admin-sidebar.show {
        transform: translateX(0);
    }
    .admin-main {
        margin-left: 0;
    }
}