:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg: #f3f4f6;
    --card: #ffffff;
    --text: #1f2937;
    --border: #e5e7eb;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.card {
    background: var(--card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="tel"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-top: 0.25rem;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1rem;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

.permissions-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.permission-check {
    display: flex;
    align-items: center;
    gap: 5px;
    background: #eef2ff;
    padding: 5px 10px;
    border-radius: 6px;
    border: 1px solid #c7d2fe;
}

.permission-check input {
    width: auto;
    margin: 0;
}

.key-display {
    background: #ecfdf5;
    border: 1px solid #10b981;
    color: #065f46;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-size: 1.25rem;
    font-family: monospace;
    margin-bottom: 1.5rem;
    word-break: break-all;
}

.user-list {
    margin-top: 2rem;
}

.user-item {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border);
    font-size: 0.9rem;
}

.user-header {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.user-key {
    font-family: monospace;
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.badge {
    background: #e0e7ff;
    color: #3730a3;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-right: 4px;
}