* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

nav {
    background: #1a1a2e;
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.2rem;
}

.nav-links a {
    color: #ccc;
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: #fff;
}

main {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

h1 {
    margin-bottom: 1.5rem;
    color: #1a1a2e;
}

h2 {
    margin: 2rem 0 1rem;
    color: #1a1a2e;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a2e;
}

.stat-label {
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.25rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    font-size: 0.85rem;
    color: #555;
}

td a {
    color: #2563eb;
    text-decoration: none;
}

td a:hover {
    text-decoration: underline;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-unused { background: #e0f2fe; color: #0369a1; }
.badge-activated { background: #dcfce7; color: #166534; }
.badge-revoked { background: #fee2e2; color: #991b1b; }
.badge-expired { background: #fef3c7; color: #92400e; }
.badge-perpetual { background: #f3f4f6; color: #374151; }
.badge-time_limited { background: #ede9fe; color: #5b21b6; }
.badge-trial { background: #fce7f3; color: #9d174d; }

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

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input, .form-group select {
    width: 100%;
    max-width: 400px;
    padding: 0.5rem 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.95rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    color: #555;
    background: #e5e7eb;
}

.btn-primary {
    background: #2563eb;
    color: #fff;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-danger {
    background: #dc2626;
    color: #fff;
}

.btn-danger:hover {
    background: #b91c1c;
}

.btn-active {
    background: #2563eb;
    color: #fff;
}

.filter-bar {
    margin-bottom: 1rem;
    display: flex;
    gap: 0.5rem;
}

.detail-card {
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 1rem;
}

.detail-card dl {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 0.5rem;
}

.detail-card dt {
    font-weight: 600;
    color: #555;
}

.detail-card dd {
    color: #333;
}

code {
    background: #f1f5f9;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

pre {
    background: #f1f5f9;
    padding: 0.75rem;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 0.85rem;
}

.empty {
    color: #888;
    padding: 2rem;
    text-align: center;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

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

.login-container {
    max-width: 360px;
    margin: 4rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.login-container h1 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.generated-keys {
    background: #fff;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.key-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.key-item:last-child {
    border-bottom: none;
}

.inline-form {
    margin-top: 1rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    align-items: center;
}

.action-buttons .inline-form {
    margin-top: 0;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.action-buttons select {
    padding: 0.4rem 0.6rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.85rem;
}

.meta {
    font-size: 0.8rem;
    color: #666;
    margin-left: 0.5rem;
}