:root {
  --green: #4ade80;
  --green-bg: rgba(74,222,128,0.12);
  --yellow: #facc15;
  --yellow-bg: rgba(250,204,21,0.12);
  --red: #f87171;
  --red-bg: rgba(248,113,113,0.12);
  --gray: #94a3b8;
  --gray-bg: rgba(148,163,184,0.12);
  --blue: #60a5fa;
  --blue-bg: rgba(96,165,250,0.12);
  --bg: #111827;
  --surface: #1f2937;
  --surface-2: #283548;
  --text: #f1f5f9;
  --text-dim: #9ca3af;
  --border: #374151;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.15s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, system-ui, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
header { margin-bottom: 2rem; display: flex; align-items: center; gap: 1rem; justify-content: space-between; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
header h1 { font-size: 1.5rem; font-weight: 700; }
.subtitle { color: var(--text-dim); font-size: 0.875rem; }
.header-right { display: flex; align-items: center; gap: 0.75rem; }
.user-name { color: var(--text-dim); font-size: 0.875rem; }
.text-dim { color: var(--text-dim); }

/* ---- Stats ---- */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2rem; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem; text-align: center; }
.stat-value { display: block; font-size: 2rem; font-weight: 700; }
.stat-label { display: block; font-size: 0.75rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.25rem; }
.stat-card-red .stat-value { color: var(--red); }

/* ---- Sections ---- */
section { margin-bottom: 2rem; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
section h2 { font-size: 1.125rem; font-weight: 600; }
.section-desc { font-size: 0.8rem; color: var(--text-dim); margin-top: 0.125rem; }

/* ---- Tables ---- */
table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
th { text-align: left; padding: 0.75rem 1rem; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-dim); border-bottom: 1px solid var(--border); background: var(--surface-2); }
td { padding: 0.625rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.875rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }
.mono { font-family: "SF Mono", ui-monospace, monospace; font-size: 0.8rem; }
.truncate { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.clickable { cursor: pointer; }
.clickable:hover td { background: var(--blue-bg); }

/* ---- Badges ---- */
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 9999px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-yellow { background: var(--yellow-bg); color: var(--yellow); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-gray { background: var(--gray-bg); color: var(--gray); }
.badge-blue { background: var(--blue-bg); color: var(--blue); }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.5rem 1rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: var(--radius); cursor: pointer; font-size: 0.8rem; font-weight: 500; transition: background var(--transition), border-color var(--transition); line-height: 1.4; text-decoration: none; }
.btn:hover { background: var(--surface-2); }
.btn:active { transform: scale(0.97); }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.7rem; }
.btn-wide { width: 100%; }
.btn-red { border-color: rgba(248,113,113,0.35); color: var(--red); }
.btn-red:hover { background: var(--red-bg); }
.btn-yellow { border-color: rgba(250,204,21,0.35); color: var(--yellow); }
.btn-yellow:hover { background: var(--yellow-bg); }
.btn-blue { border-color: rgba(96,165,250,0.35); color: var(--blue); }
.btn-blue:hover { background: var(--blue-bg); }
.btn-green { border-color: rgba(74,222,128,0.35); color: var(--green); }
.btn-green:hover { background: var(--green-bg); }
.btn-primary { background: var(--green); border-color: var(--green); color: #111827; font-weight: 600; }
.btn-primary:hover { background: #22c55e; border-color: #22c55e; }

.actions { display: flex; gap: 0.375rem; flex-wrap: wrap; }

/* ---- Modals ---- */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal.hidden { display: none; }
.modal-content { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; max-width: 420px; width: 100%; box-shadow: var(--shadow); }
.modal-content.wide { max-width: 600px; }
.modal-content h3 { margin-bottom: 1.25rem; font-size: 1.125rem; }
.modal-content h4 { margin: 1rem 0 0.5rem; font-size: 0.9rem; color: var(--text-dim); }
.modal-actions { margin-top: 1.5rem; display: flex; gap: 0.5rem; justify-content: flex-end; }
#qr-canvas { margin: 1rem auto; display: block; border-radius: var(--radius); }
#qr-status { color: var(--text-dim); margin-bottom: 1rem; font-size: 0.875rem; text-align: center; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1.125rem; }
.form-group label { display: block; margin-bottom: 0.375rem; font-size: 0.8rem; font-weight: 500; color: var(--text-dim); }
.form-group input[type=text],
.form-group input[type=password],
.form-group input[type=email] { width: 100%; padding: 0.625rem 0.875rem; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 0.875rem; transition: border-color var(--transition), box-shadow var(--transition); }
.form-group input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(96,165,250,0.15); }
.form-group select { width: 100%; padding: 0.625rem 0.875rem; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 0.875rem; }
.form-group select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(96,165,250,0.15); }

/* ---- Copy field ---- */
.copy-field { display: flex; gap: 0.5rem; }
.copy-field input { flex: 1; }

/* ---- Permission grid ---- */
.permission-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
.perm-label { display: flex; align-items: center; gap: 0.375rem; font-size: 0.8rem; cursor: pointer; padding: 0.25rem 0; }

/* ---- Message detail ---- */
.detail-table { width: 100%; margin-bottom: 0.5rem; }
.detail-table th { width: 100px; background: none; }

/* ---- Retry attempt timeline ---- */
.attempt-timeline { max-height: 200px; overflow-y: auto; }
.attempt-item { display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); font-size: 0.8rem; }
.attempt-item:last-child { border-bottom: none; }
.attempt-num { font-weight: 700; color: var(--blue); min-width: 24px; }
.attempt-time { color: var(--text-dim); font-family: ui-monospace, monospace; }
.attempt-error { flex: 1; color: var(--red); }
.attempt-backoff { color: var(--text-dim); font-size: 0.75rem; }

/* ---- Flash messages ---- */
.flash-message { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1.25rem; font-size: 0.85rem; font-weight: 500; }
.flash-red { background: var(--red-bg); color: var(--red); border: 1px solid rgba(248,113,113,0.25); }
.flash-green { background: var(--green-bg); color: var(--green); border: 1px solid rgba(74,222,128,0.25); }

/* ---- Auth pages (login, change-password) ---- */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 1rem; }
.auth-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 2.5rem; width: 100%; max-width: 380px; box-shadow: var(--shadow); }
.auth-card .auth-logo { text-align: center; margin-bottom: 0.5rem; }
.auth-card .auth-logo svg { display: block; margin: 0 auto 0.5rem; }
.auth-card .auth-logo h1 { font-size: 1.75rem; font-weight: 700; color: var(--text); }
.auth-card .auth-subtitle { text-align: center; color: var(--text-dim); font-size: 0.85rem; margin-bottom: 2rem; display: block; text-decoration: none; }
.auth-card form { margin-top: 0.5rem; }
.auth-card form .btn { margin-top: 0.75rem; }
.auth-card .auth-forced { text-align: center; color: var(--yellow); font-size: 0.85rem; margin-bottom: 1.25rem; padding: 0.75rem; background: var(--yellow-bg); border-radius: var(--radius); border: 1px solid rgba(250,204,21,0.2); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .container { padding: 1rem; }
  .permission-grid { grid-template-columns: 1fr; }
  header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .header-right { width: 100%; justify-content: flex-end; }
}