:root {
    --fg: #1a1a1a;
    --muted: #666;
    --border: #ccc;
    --accent: #2563eb;
    --error-bg: #fde8e8;
    --error-fg: #9b1c1c;
    --success-bg: #e6f4ea;
    --success-fg: #1e7e34;
}

body {
    font-family: system-ui, sans-serif;
    color: var(--fg);
    margin: 0;
    background: #f5f5f5;
}

main {
    max-width: 640px;
    margin: 2rem auto;
    padding: 0 1rem;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

h1 {
    font-size: 1.4rem;
}

.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

fieldset.version {
    display: flex;
    gap: 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}

fieldset.version label {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
}

input[type="number"] {
    width: 5rem;
}

input[type="password"],
input[type="number"],
input[type="file"] {
    padding: 0.4rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

label.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

button {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    cursor: pointer;
}

.logout button {
    background: transparent;
    color: var(--muted);
    padding: 0.3rem 0.6rem;
}

.flashes {
    list-style: none;
    padding: 0;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.flash.error {
    background: var(--error-bg);
    color: var(--error-fg);
}

.flash.success {
    background: var(--success-bg);
    color: var(--success-fg);
}

.hint {
    color: var(--muted);
    font-size: 0.85rem;
}