:root {
    color-scheme: light dark;
    --border: #d0d0d0;
    --bg-subtle: #f5f5f5;
}

* {
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    color: #1a1a1a;
    background: #fff;
}

@media (prefers-color-scheme: dark) {
    body { color: #eee; background: #1e1e1e; }
    :root { --border: #444; --bg-subtle: #2a2a2a; }
    input { background: #2a2a2a; color: #eee; border-color: #555; }
    table { border-color: #444; }
    th, td { border-color: #444 !important; }
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--border);
}

.topbar h1 { margin: 0; font-size: 1.25rem; }

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.5rem;
}

.login-box {
    max-width: 320px;
    margin: 4rem auto;
    text-align: center;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form-box, .list-box {
    margin-bottom: 2rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

label {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
    gap: 0.25rem;
}

input {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

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

button, .cancel {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    color: inherit;
}

button[type="submit"] {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

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

th, td {
    text-align: left;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.row-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.row-actions form { display: inline; }

.link-button {
    background: none;
    border: none;
    padding: 0;
    color: #b91c1c;
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.9rem;
}

.error {
    color: #b91c1c;
    font-weight: 600;
}

.logout {
    color: inherit;
}