/* Base reset, typography, and utility classes */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: var(--font-size-base);
  color: var(--text);
  background: var(--page-bg);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  user-select: none;
  white-space: nowrap;
  line-height: 1;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary   { background: var(--cobalt); color: #fff; }
.btn-primary:not(:disabled):hover { background: var(--cobalt-hover); }
.btn-secondary { background: var(--card-bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--ecru); }
.btn-ghost  { background: transparent; color: var(--cobalt); padding: 6px 10px; }
.btn-ghost:hover { background: var(--cobalt-light); }
.btn-danger { background: var(--poppy); color: #fff; }
.btn-danger:hover { background: #e04040; }
.btn-sm  { padding: 5px 10px; font-size: var(--font-size-sm); }
.btn-xs  { padding: 3px 8px; font-size: var(--font-size-xs); }
.btn-icon { padding: 6px; border-radius: var(--radius-sm); }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
}
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-green  { background: var(--success-bg); color: var(--success); }
.badge-amber  { background: var(--warning-bg); color: var(--warning); }
.badge-red    { background: var(--error-bg);   color: var(--error); }
.badge-blue   { background: var(--cobalt-light); color: var(--cobalt); }
.badge-gray   { background: #EDF0F4; color: var(--slate); }

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-md);
}
.card-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title { font-size: var(--font-size-md); font-weight: 700; }
.card-body  { padding: var(--space-md) 20px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left;
  padding: 10px 14px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: #FAFBFC;
  white-space: nowrap;
}
td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  font-size: var(--font-size-base);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: #FAFBFC; }

/* ── Page layout ── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-title   { font-size: var(--font-size-xl); font-weight: 700; color: var(--text); }
.page-subtitle { font-size: var(--font-size-base); color: var(--text-muted); margin-top: 2px; }
.page-actions { display: flex; gap: var(--space-sm); align-items: center; }

/* ── Callouts ── */
.callout {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-md);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.callout-icon { font-size: 16px; flex-shrink: 0; }
.callout.info    { background: var(--cobalt-light); border: 1px solid #B3D4FF; color: #0052A3; }
.callout.warn    { background: var(--warning-bg); border: 1px solid #FFD280; color: #7A3E00; }
.callout.success { background: var(--success-bg); border: 1px solid #B3E8D5; color: #006644; }
.callout.error   { background: var(--error-bg); border: 1px solid #FFB3B3; color: #8B0000; }

/* ── Tabs ── */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
  gap: 0;
}
.tab {
  padding: 10px 18px;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.1s;
  user-select: none;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--cobalt); border-bottom-color: var(--cobalt); }

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: var(--space-md) 0; }

/* ── Misc utilities ── */
.mono  { font-family: var(--font-mono); font-size: var(--font-size-sm); background: var(--ecru); padding: 1px 6px; border-radius: 3px; }
.tag   { display: inline-block; padding: 1px 7px; border-radius: var(--radius-sm); font-size: var(--font-size-xs); font-weight: 600; background: var(--ecru); color: var(--text-muted); margin-right: 4px; }
.cb    { width: 15px; height: 15px; accent-color: var(--cobalt); cursor: pointer; flex-shrink: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.activity-details { min-width: 320px; font-size: var(--font-size-sm); color: var(--text-muted); }

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 40px; margin-bottom: 12px; opacity: 0.5; }
.empty-state-title { font-size: var(--font-size-lg); font-weight: 700; margin-bottom: 6px; color: var(--text); }
.empty-state-sub   { font-size: var(--font-size-base); }

/* ── Spinner ── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--cobalt);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
.spinner-sm { width: 12px; height: 12px; border-width: 1.5px; }

/* ── Progress bar ── */
.progress-wrap  { margin-bottom: var(--space-lg); }
.progress-label { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: var(--font-size-sm); color: var(--text-muted); }
.progress-bar   { height: 8px; border-radius: 4px; background: var(--border); overflow: hidden; }
.progress-fill  { height: 100%; background: var(--cobalt); border-radius: 4px; transition: width 0.4s ease; }
.progress-fill.green { background: var(--success); }
.progress-fill.amber { background: var(--warning-amber); }

/* ── Toggle switch ── */
.toggle {
  width: 36px;
  height: 20px;
  background: var(--border);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background 0.2s;
  border: none;
}
.toggle.on { background: var(--cobalt); }
.toggle::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: left 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle.on::after { left: 19px; }

/* ── Stat cards grid ── */
.stat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: box-shadow 0.15s;
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-label { font-size: var(--font-size-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.stat-sub   { font-size: var(--font-size-xs); color: var(--text-muted); }
.stat-card.blue  .stat-value { color: var(--cobalt); }
.stat-card.green .stat-value { color: var(--success); }
.stat-card.amber .stat-value { color: var(--warning); }
.stat-card.red   .stat-value { color: var(--error); }
.stat-card.gray  .stat-value { color: var(--slate); }

/* ── Two/three-col layouts ── */
.two-col   { display: grid; grid-template-columns: 1fr 320px; gap: var(--space-md); align-items: start; }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: var(--space-md); }

/* ── Avatar ── */
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--cobalt);
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── Help / onboarding ── */
.help-layout { grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr); }
.help-card { margin-bottom: 16px; }
.help-step-list,
.help-tip-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.help-step-item,
.help-tip-item,
.help-mini-card {
  border: 1px solid var(--border);
  background: #FAFBFC;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.help-step-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.help-step-title,
.help-mini-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.help-step-desc,
.help-mini-text,
.help-tip-item {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: 1.5;
}
.help-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); }
  .two-col   { grid-template-columns: 1fr; }
  .help-layout { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .help-mini-grid { grid-template-columns: 1fr; }
  .help-step-item { flex-direction: column; align-items: flex-start; }
}