body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #070b0c;
    color: #e3f5f5;
}

a { color: #00ffd0; text-decoration: none; }

.admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 220px;
    height: 100vh;
    background: #0a1113;
    padding: 20px;
}

.admin-sidebar h2 {
    color: #00ffd0;
    margin-bottom: 20px;
}

.admin-sidebar ul {
    list-style: none;
    padding: 0;
}

.admin-sidebar ul li {
    margin-bottom: 12px;
}

.admin-sidebar ul li a {
    color: #9bd;
}

.admin-sidebar ul li.active a,
.admin-sidebar ul li a:hover {
    color: #00ffd0;
}

.admin-main {
    margin-left: 220px;
    padding: 25px;
}

h1 {
    margin-top: 0;
    color: #00ffd0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: #091417;
    padding: 18px;
    border-radius: 8px;
    box-shadow: 0 0 18px rgba(0, 255, 200, 0.15);
}

.stat-value {
    font-size: 24px;
    margin-top: 5px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th,
.table td {
    border-bottom: 1px solid #13343a;
    padding: 8px;
    font-size: 14px;
}

.table th {
    text-align: left;
    color: #8fd;
}

.btn,
.btn-small {
    display: inline-block;
    padding: 8px 15px;
    margin-top: 10px;
    background: #00ffd0;
    color: #003d33;
    border-radius: 6px;
    font-size: 14px;
    border: none;
    cursor: pointer;
}

.btn-small {
    padding: 4px 10px;
    font-size: 12px;
}

.btn:hover,
.btn-small:hover {
    background: #00e1b4;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 7px;
    background: #050b0c;
    border: 1px solid #13343a;
    border-radius: 5px;
    color: #e3f5f5;
}

.error {
    margin-top: 10px;
    padding: 8px;
    background: #501b1b;
    color: #ffbaba;
    border-radius: 6px;
}

.success {
    margin-top: 10px;
    padding: 8px;
    background: #104727;
    color: #abffcf;
    border-radius: 6px;
}

.auth-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: radial-gradient(circle at center, #0c2023, #050808);
}

.auth-card {
    width: 320px;
    background: #050b0c;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 25px rgba(0, 255, 200, 0.25);
}

.auth-card h2 {
    margin-top: 0;
    color: #00ffd0;
    margin-bottom: 15px;
}