html, body {
    font-family: system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background: #0f1419;
    color: #e7eef7;
}

a {
    color: #7cc4ff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: #151b24;
    border-bottom: 1px solid #243044;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: #e7eef7;
}

.nav {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.content {
    flex: 1;
    padding: 1.5rem 1.25rem;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.panel {
    background: #151b24;
    border: 1px solid #243044;
    border-radius: 10px;
    padding: 1.25rem;
    margin-top: 1rem;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.9rem;
}

input[type="email"], input[type="password"], select {
    padding: 0.5rem 0.6rem;
    border-radius: 8px;
    border: 1px solid #324056;
    background: #0f1419;
    color: #e7eef7;
}

button, .btn {
    padding: 0.55rem 0.9rem;
    border-radius: 8px;
    border: 1px solid #324056;
    background: #1c2a3d;
    color: #e7eef7;
    cursor: pointer;
}
button:hover, .btn:hover {
    background: #243652;
}

.linkish {
    background: transparent;
    border: none;
    color: #7cc4ff;
    padding: 0;
    cursor: pointer;
    font: inherit;
}

.muted {
    color: #9aa7b8;
    font-size: 0.9rem;
}

.error {
    color: #ff8a8a;
    white-space: pre-wrap;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th, td {
    text-align: left;
    padding: 0.5rem 0.4rem;
    border-bottom: 1px solid #243044;
}

.diagnostic-error {
    max-width: 56rem;
    margin: 1.5rem auto;
    padding: 1.25rem 1.5rem;
    border: 1px solid #5a3030;
    border-radius: 8px;
    background: #1a1212;
}

.diagnostic-error-message {
    color: #ffb4b4;
    white-space: pre-wrap;
}

.diagnostic-error-stack {
    overflow: auto;
    max-height: 70vh;
    padding: 1rem;
    font-size: 0.8rem;
    line-height: 1.35;
    background: #0d0d0f;
    border: 1px solid #243044;
    border-radius: 6px;
    color: #cfd8e6;
}