* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f6f8;
    color: #1f2937;
}

.container {
    max-width: 920px;
    margin: 40px auto;
    padding: 0 16px;
}

.card {
    background: #ffffff;
    padding: 28px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,.08);
}

h1 {
    margin-top: 0;
}

label {
    display: block;
    margin-top: 16px;
    font-weight: 600;
}

input, select, textarea {
    width: 100%;
    margin-top: 6px;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    font-size: 16px;
}

textarea {
    resize: vertical;
}

button, .button {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 18px;
    border: 0;
    border-radius: 10px;
    background: #111827;
    color: white;
    text-decoration: none;
    cursor: pointer;
    font-size: 16px;
}

.button.secondary {
    background: #475569;
}

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin: 16px 0;
}

.alert.error {
    background: #fee2e2;
    color: #991b1b;
}

.checkbox {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.checkbox input {
    width: auto;
    margin-top: 3px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 18px;
}

.table-wrap {
    overflow-x: auto;
}

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

th, td {
    border-bottom: 1px solid #e5e7eb;
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

th {
    background: #f8fafc;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    background: #e5e7eb;
    font-size: 13px;
}