:root {
    color-scheme: light dark;
    --bg: #f5f6f8;
    --card-bg: #ffffff;
    --text: #1c1f24;
    --muted: #6b7280;
    --border: #e2e5ea;
    --accent: #2563eb;
    --ok: #15803d;
    --warn: #b45309;
    --danger: #b91c1c;
}

* { box-sizing: border-box; }

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

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: 1.5rem; }
.topbar nav a { margin-right: 1rem; color: var(--text); text-decoration: none; }
.topbar nav a:hover { color: var(--accent); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.topbar-right a { margin-left: 1rem; color: var(--accent); text-decoration: none; }

.content { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem; }

.banner { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.9rem; }
.banner-ok { background: #dcfce7; color: var(--ok); }
.banner-warn { background: #fef3c7; color: var(--warn); }

.filters { display: flex; gap: 0.75rem; margin-bottom: 1rem; }
.filters select { padding: 0.4rem; border-radius: 6px; border: 1px solid var(--border); }

.comment-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
}
.comment-card.status-answered { opacity: 0.75; }
.comment-meta { display: flex; gap: 0.75rem; flex-wrap: wrap; font-size: 0.8rem; color: var(--muted); margin-bottom: 0.5rem; }
.platform { font-weight: 600; text-transform: uppercase; font-size: 0.7rem; padding: 0.1rem 0.4rem; border-radius: 4px; background: #eef2ff; color: var(--accent); }
.comment-message { margin: 0.25rem 0 0.5rem; white-space: pre-wrap; }
.comment-actions { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
.comment-actions button, .reply-form button { cursor: pointer; padding: 0.35rem 0.75rem; border-radius: 6px; border: 1px solid var(--border); background: var(--card-bg); }
.comment-actions button:hover, .reply-form button:hover { border-color: var(--accent); }

.reply-form { display: flex; gap: 0.5rem; margin-top: 0.5rem; align-items: flex-start; }
.reply-form textarea { flex: 1; padding: 0.5rem; border-radius: 6px; border: 1px solid var(--border); font-family: inherit; }
.reply-form-error { color: var(--danger); font-size: 0.85rem; }

.reply-shown { background: #f8fafc; border-left: 3px solid var(--accent); padding: 0.4rem 0.6rem; margin: 0.4rem 0; font-size: 0.9rem; }
.reply-status { font-size: 0.7rem; text-transform: uppercase; margin-left: 0.5rem; color: var(--muted); }
.reply-status-failed { color: var(--danger); }
.reply-error { color: var(--danger); font-size: 0.8rem; }

.pagination { display: flex; gap: 0.4rem; margin-top: 1rem; }
.pagination a { padding: 0.3rem 0.6rem; border: 1px solid var(--border); border-radius: 4px; text-decoration: none; color: var(--text); }
.pagination a.active { background: var(--accent); color: white; border-color: var(--accent); }

.data-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; background: var(--card-bg); }
.data-table th, .data-table td { padding: 0.5rem; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.9rem; }
.error-cell { color: var(--danger); max-width: 240px; word-break: break-word; }
.inline-form { display: flex; gap: 0.4rem; align-items: center; }
.token-status-invalid { color: var(--danger); font-weight: 600; }
.token-status-expiring_soon { color: var(--warn); font-weight: 600; }

.account-form { display: flex; flex-direction: column; gap: 0.75rem; max-width: 480px; background: var(--card-bg); padding: 1rem; border: 1px solid var(--border); border-radius: 8px; }
.account-form input, .account-form select { padding: 0.4rem; border-radius: 6px; border: 1px solid var(--border); }
.hint { color: var(--muted); font-size: 0.85rem; }

.login-page { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { background: var(--card-bg); padding: 2rem; border-radius: 8px; border: 1px solid var(--border); display: flex; flex-direction: column; gap: 0.75rem; width: 320px; }
.login-box input { padding: 0.5rem; border-radius: 6px; border: 1px solid var(--border); width: 100%; }
.login-box button { padding: 0.6rem; border-radius: 6px; border: none; background: var(--accent); color: white; cursor: pointer; }
.error { color: var(--danger); }
.empty { color: var(--muted); }

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14161a;
        --card-bg: #1e2126;
        --text: #e5e7eb;
        --muted: #9ca3af;
        --border: #2c3037;
    }
    .platform { background: #1e293b; }
    .reply-shown { background: #1a1d22; }
}