:root {
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --border: #dcdfe4;
    --text: #1f2329;
    --text-muted: #6b7280;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --ok-bg: #dcfce7;
    --ok-text: #166534;
    --error-bg: #fee2e2;
    --error-text: #991b1b;
    --radius: 6px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

header nav {
    display: flex;
    gap: 16px;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

header nav a {
    color: var(--accent);
    text-decoration: none;
}

main {
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 24px;
}

main h2 {
    font-size: 1.05rem;
    margin: 32px 0 14px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

th, td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
}

th {
    background: #fafafa;
    font-weight: 600;
    color: var(--text-muted);
}

tr:last-child td { border-bottom: none; }

.toolbar {
    margin-bottom: 16px;
    display: flex;
    justify-content: flex-end;
}

.button, button {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
}

.button:hover, button:hover { background: var(--accent-hover); }

a.danger, button.danger {
    background: var(--danger);
}
a.danger:hover, button.danger:hover { background: var(--danger-hover); }

.actions a {
    margin-right: 12px;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.88rem;
    background: none;
}
.actions a.danger {
    color: var(--danger);
    background: none;
}

.link-button {
    background: none;
    border: none;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.88rem;
    padding: 0;
    margin-right: 12px;
    cursor: pointer;
    font-family: inherit;
}
.link-button:hover { background: none; text-decoration: underline; }
.link-button.danger { color: var(--danger); }

.hint-inline {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: normal;
    margin-top: 2px;
}

.badge {
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
}
.badge.ok { background: var(--ok-bg); color: var(--ok-text); }
.badge.off { background: #f3f4f6; color: var(--text-muted); }

.flash {
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.flash.ok { background: var(--ok-bg); color: var(--ok-text); }
.flash.error { background: var(--error-bg); color: var(--error-text); }

.error {
    background: var(--error-bg);
    color: var(--error-text);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 0.9rem;
}

.user-form {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.user-form label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.user-form label.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.user-form input[type=text],
.user-form input[type=password],
.user-form input[type=number],
.user-form input[type=date] {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    color: var(--text);
}

.hint {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.hint code {
    background: #f3f4f6;
    padding: 2px 5px;
    border-radius: 4px;
}

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.login-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    width: 320px;
}

.login-box h1 {
    font-size: 1.15rem;
    margin: 0 0 20px;
    text-align: center;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.login-box label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.login-box input {
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
}

.login-box button {
    margin-top: 6px;
}