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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

a {
  color: var(--primary);
}

.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.03em;
  font-size: 0.95rem;
}

.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.nav-tab {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-sec);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.nav-tab.is-active {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}

.header-actions {
  display: flex;
  gap: 8px;
}

.main {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  flex: 1;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.period-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.custom-range {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .cards {
    grid-template-columns: repeat(5, 1fr);
  }
  .cards--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .cards--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.ads-toolbar {
  align-items: flex-end;
}

.hint-tip {
  cursor: help;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.empty-cell {
  text-align: center;
  color: var(--text-muted);
  padding: 24px 8px !important;
}

.grid-2 {
  display: grid;
  gap: 16px;
}

@media (min-width: 860px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.panel-title {
  margin: 0 0 12px;
  font-size: 0.95rem;
  font-weight: 700;
}

.chart-box {
  position: relative;
  height: 280px;
}

.chart-box--tall {
  height: 320px;
}

.table-wrap {
  overflow-x: auto;
}

.app-footer {
  padding: 12px 16px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}