:root {
    --bg: #f4f6fa;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --ok: #16a34a;
    --warn: #d97706;
    --err: #dc2626;
    --border: #e5e7eb;
}

* { box-sizing: border-box; }

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

/* ---------- Top bar + tabs ---------- */
.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    background: #111827;
    color: #fff;
    padding: 0 24px;
    height: 56px;
    flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.05rem; white-space: nowrap; }
.tabs { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.tab {
    color: #d1d5db;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px 8px 0 0;
    font-size: .95rem;
}
.tab:hover { background: #1f2937; color: #fff; }
.tab.active { background: var(--bg); color: var(--text); font-weight: 600; }
.userbox { display: flex; align-items: center; gap: 12px; font-size: .9rem; }
.userbox span { color: #9ca3af; }

.container { max-width: 1200px; margin: 24px auto; padding: 0 20px; }

/* ---------- Cards & layout ---------- */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}
.cards { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.card.stat { flex: 1; min-width: 140px; text-align: center; padding: 16px; }
.stat-num { font-size: 2rem; font-weight: 700; }
.stat.ok .stat-num { color: var(--ok); }
.stat.warn .stat-num { color: var(--warn); }
.stat.err .stat-num { color: var(--err); }
.stat.muted .stat-num { color: var(--muted); }
.stat-label { color: var(--muted); font-size: .85rem; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---------- Forms ---------- */
label { display: block; margin-bottom: 12px; font-size: .9rem; font-weight: 500; }
input, select, textarea {
    width: 100%;
    margin-top: 4px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font: inherit;
    background: #fff;
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--primary);
    border-color: transparent;
}
textarea { resize: vertical; font-family: ui-monospace, monospace; font-size: .9rem; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 9px 18px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    text-decoration: none;
    font: inherit;
    font-size: .95rem;
    cursor: pointer;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--err); }
.btn-danger:hover { background: #fee2e2; }
.btn-ghost { background: transparent; border-color: #374151; color: #9ca3af; }
.btn-ghost:hover { background: #1f2937; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: .85rem; }
.btn-block { width: 100%; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 12px; overflow: hidden; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: .9rem; vertical-align: top; }
th { background: #f9fafb; font-size: .8rem; text-transform: uppercase; color: var(--muted); letter-spacing: .03em; }
tr:hover td { background: #f9fafb; }
.wrap { max-width: 260px; word-break: break-word; }
.row-inactive td { opacity: .5; }
.actions { white-space: nowrap; }
.error-detail { color: var(--err); font-size: .78rem; max-width: 220px; white-space: normal; margin-top: 4px; }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; }
.badge-ok { background: #dcfce7; color: var(--ok); }
.badge-warn { background: #fef3c7; color: var(--warn); }
.badge-err { background: #fee2e2; color: var(--err); }
.badge-muted { background: #e5e7eb; color: var(--muted); }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: .92rem; }
.flash-success { background: #dcfce7; color: #14532d; }
.flash-warning { background: #fef3c7; color: #78350f; }
.flash-error { background: #fee2e2; color: #7f1d1d; }

/* ---------- Login ---------- */
.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: #111827;
}
.login-card {
    background: var(--card); border-radius: 14px; padding: 32px;
    width: 340px; box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.login-card h1 { font-size: 1.3rem; margin: 0 0 4px; text-align: center; }
.login-card p { text-align: center; margin-top: 0; }

.muted { color: var(--muted); }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.1rem; margin-top: 0; }
pre {
    background: #111827; color: #a7f3d0; padding: 12px 16px;
    border-radius: 8px; overflow-x: auto; font-size: .85rem;
}