:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #fafbfc;
  --border: #e3e5ea;
  --border-strong: #c8ccd4;
  --text: #1f232b;
  --text-muted: #5f6675;
  --text-soft: #8a8f9c;
  --primary: #2d4cdb;
  --primary-hover: #243db5;
  --primary-soft: #eaeefb;
  --danger: #c8362a;
  --danger-soft: #fbe9e7;
  --success: #1f8a4c;
  --success-soft: #e6f4ec;
  --warning: #b07300;
  --warning-soft: #fbf2dc;
  --shadow-sm: 0 1px 2px rgba(20, 25, 40, .06);
  --shadow-md: 0 4px 12px rgba(20, 25, 40, .08);
  --radius: 8px;
  --radius-lg: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { margin: 0 0 .5rem; font-weight: 600; color: var(--text); }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }

p { margin: 0 0 .5rem; }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #1f232b;
  color: #d3d7e0;
  padding: 1.25rem 0;
  display: flex;
  flex-direction: column;
}
.sidebar .brand {
  padding: 0 1.25rem 1.25rem;
  border-bottom: 1px solid #2d3340;
  margin-bottom: 1rem;
}
.sidebar .brand h1 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #fff;
}
.sidebar .brand small {
  color: #8a8f9c;
  font-size: .75rem;
}
.sidebar nav { flex: 1; }
.sidebar nav a {
  display: block;
  padding: .55rem 1.25rem;
  color: #c8ccd4;
  border-left: 3px solid transparent;
  font-size: .9rem;
}
.sidebar nav a:hover {
  background: #2a2f3a;
  color: #fff;
  text-decoration: none;
}
.sidebar nav a.active {
  background: #2a2f3a;
  border-left-color: var(--primary);
  color: #fff;
}
.sidebar nav .nav-section {
  padding: 1rem 1.25rem .25rem;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #6c7280;
}

.sidebar .user-block {
  padding: 1rem 1.25rem;
  border-top: 1px solid #2d3340;
  font-size: .8rem;
}
.sidebar .user-block .name { color: #fff; font-weight: 600; }
.sidebar .user-block .email { color: #8a8f9c; word-break: break-all; }
.sidebar .user-block button {
  margin-top: .5rem;
  background: transparent;
  border: 1px solid #3d4452;
  color: #c8ccd4;
}
.sidebar .user-block button:hover {
  background: #2a2f3a;
  color: #fff;
}

main.content {
  padding: 1.5rem 2rem 3rem;
  overflow: auto;
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  gap: 1rem;
}
.page-header h1 { margin: 0; }
.page-header .subtitle { color: var(--text-muted); margin-top: .25rem; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.card h2, .card h3 { margin-top: 0; }
.card-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}
.metric .label { color: var(--text-muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; }
.metric .value { font-size: 1.6rem; font-weight: 600; margin-top: .25rem; }
.metric .hint { color: var(--text-soft); font-size: .8rem; margin-top: .25rem; }

/* ---------- Forms ---------- */
form .field { margin-bottom: .85rem; }
label {
  display: block;
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: .25rem;
  font-weight: 500;
}
input[type="text"], input[type="email"], input[type="password"], input[type="url"], input[type="tel"], input[type="number"], select, textarea {
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: #fff;
  font: inherit;
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--primary-soft);
  border-color: var(--primary);
}
textarea { min-height: 100px; resize: vertical; font-family: inherit; }

button, .btn {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .55rem 1rem;
  font: inherit;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--surface-2); }
button:disabled { opacity: .55; cursor: not-allowed; }
button.primary, .btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
button.primary:hover, .btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.ghost { background: transparent; border-color: transparent; color: var(--primary); }
button.ghost:hover { background: var(--primary-soft); }
button.small, .btn.small { padding: .3rem .65rem; font-size: .8rem; }

.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; }

/* ---------- Tables ---------- */
.table-wrapper { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}
table.data th, table.data td {
  text-align: left;
  padding: .65rem .85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.data thead th {
  background: var(--surface-2);
  font-weight: 600;
  font-size: .8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .03em;
}
table.data tbody tr:hover { background: var(--surface-2); }
table.data tbody tr.clickable { cursor: pointer; }

.empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
}
.empty .muted { color: var(--text-soft); font-size: .9rem; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 500;
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.badge.green { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge.red { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.amber { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge.blue { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.badge.grey { background: #eef0f4; color: #5f6675; border-color: transparent; }

/* ---------- Login ---------- */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #f5f6f8 0%, #ffffff 100%);
  padding: 1rem;
}
.login-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2rem 2.25rem;
  width: 100%;
  max-width: 400px;
}
.login-card h1 {
  margin: 0 0 .25rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.login-card .subtitle {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}
.login-card form button { width: 100%; justify-content: center; padding: .7rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--text);
  color: #fff;
  padding: .65rem 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 9999;
  max-width: 360px;
  font-size: .9rem;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(20, 25, 40, .55);
  display: grid; place-items: center;
  z-index: 5000;
  padding: 1rem;
}
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow: auto;
}
.modal.lg { max-width: 760px; }
.modal h2 { margin-top: 0; }
.modal .modal-actions {
  display: flex; gap: .5rem; justify-content: flex-end;
  margin-top: 1rem;
}

/* ---------- Misc ---------- */
.muted { color: var(--text-muted); }
.soft { color: var(--text-soft); }
.spacer { flex: 1; }
.row { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.stack > * + * { margin-top: .75rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: .35rem; }

.kv { display: grid; grid-template-columns: 160px 1fr; gap: .5rem 1rem; }
.kv dt { color: var(--text-muted); font-size: .85rem; }
.kv dd { margin: 0; }

pre.transcript {
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .85rem;
  max-height: 480px;
  overflow: auto;
}

.detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

.loading {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}
.error-box {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid #f3c8c4;
  border-radius: var(--radius);
  padding: .65rem .85rem;
  margin-bottom: .85rem;
  font-size: .9rem;
}
.info-box {
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid #c9d3f8;
  border-radius: var(--radius);
  padding: .65rem .85rem;
  margin-bottom: .85rem;
  font-size: .9rem;
}