*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --border: #e2e6ec;
  --text: #1a2332;
  --text-muted: #5a6478;
  --accent: #1a2332;
  --accent-hover: #2c3e57;
  --danger: #c0392b;
  --danger-hover: #a93226;
  --success: #1a7a4a;
  --warning: #b45309;
  --radius: 8px;
  --shadow: 0 1px 4px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ── */
.ops-header {
  background: var(--accent);
  color: #fff;
  padding: 0 1.5rem;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.ops-logo { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.ops-tag {
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-left: 6px;
}

.ops-header-right { display: flex; align-items: center; gap: 0.75rem; }
.auth-status { font-size: 0.85rem; opacity: 0.8; }

/* ── Main ── */
.ops-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

.card-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.35rem; }
.card-desc { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 1rem; }

/* ── Inputs ── */
.input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text);
  background: #fff;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}
.input:focus { border-color: var(--accent); }

.field-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-secondary { background: #e8edf4; color: var(--text); }
.btn-secondary:hover:not(:disabled) { background: #d8dfe9; }

.btn-ghost { background: transparent; color: rgba(255,255,255,0.8); }
.btn-ghost:hover:not(:disabled) { background: rgba(255,255,255,0.1); color: #fff; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.8rem; }

/* ── Tabs ── */
.ops-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0 1rem;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 0.75rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.tab-active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* ── Tab panels ── */
.tab-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

.panel-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.panel-title { font-size: 1rem; font-weight: 600; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }

.ops-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.ops-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.ops-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.ops-table tr:last-child td { border-bottom: none; }
.ops-table tbody tr:hover { background: #f8fafc; }

.empty-row { color: var(--text-muted); font-style: italic; text-align: center; padding: 2rem 0; }

/* ── Badges ── */
.badge {
  display: inline-block;
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-free     { background: #f0f2f5; color: #5a6478; }
.badge-basic    { background: #e8f0fe; color: #1a5dbd; }
.badge-pro      { background: #fef3c7; color: #92400e; }
.badge-active   { background: #d1fae5; color: #065f46; }
.badge-disabled { background: #fee2e2; color: #991b1b; }
.badge-status-draft   { background: #f0f2f5; color: #5a6478; }
.badge-status-sent    { background: #e8f0fe; color: #1a5dbd; }
.badge-status-paid    { background: #d1fae5; color: #065f46; }
.badge-status-overdue { background: #fee2e2; color: #991b1b; }
.badge-status-void    { background: #f0f2f5; color: #9ca3af; }

/* ── Config grid ── */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.config-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 0.9rem 1rem;
}
.config-card-ok  { border-left: 4px solid var(--success); }
.config-card-err { border-left: 4px solid var(--danger); }

.config-card-header { display: flex; align-items: center; gap: 0.5rem; }
.config-icon { font-size: 1rem; }
.config-card-ok .config-icon  { color: var(--success); }
.config-card-err .config-icon { color: var(--danger); }
.config-key { font-weight: 600; font-size: 0.875rem; }
.config-detail { margin-top: 0.35rem; font-size: 0.8rem; color: var(--text-muted); word-break: break-all; }

/* ── Output ── */
.output-card { padding: 1rem 1.25rem; }
.output-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.6rem; }
.output-pre {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  max-height: 280px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}