@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&display=swap');

:root {
  --bg: #ffffff;
  --fg: #000000;
  --line: rgba(0, 0, 0, 0.15);
  --muted: rgba(0, 0, 0, 0.55);
}

[data-theme='dark'] {
  --bg: #000000;
  --fg: #ffffff;
  --line: rgba(255, 255, 255, 0.18);
  --muted: rgba(255, 255, 255, 0.6);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
}

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  transition: background 0.15s ease, color 0.15s ease;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
}

.app-name {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.header-controls {
  display: flex;
  gap: 12px;
}

.icon-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 6px 12px;
  cursor: pointer;
}

.icon-btn:hover {
  border-color: var(--fg);
}

.icon-btn:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}

.tab {
  background: none;
  border: none;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 14px 10px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.tab.active {
  color: var(--fg);
  border-bottom-color: var(--fg);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

h1 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 24px;
}

h2 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  margin: 32px 0 12px;
}

.stat-row {
  display: flex;
  gap: 32px;
  margin-bottom: 24px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.empty-state {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 24px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.8rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

label {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

input,
select {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 10px;
  font-family: inherit;
  font-size: 0.95rem;
}

input:focus,
select:focus {
  border-color: var(--fg);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
  border: 1px solid var(--fg);
  padding: 10px 20px;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-text {
  background: none;
  border: none;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px;
}

.btn-text:hover {
  color: var(--fg);
}

.chart {
  width: 100%;
  height: auto;
  overflow: visible;
}

.chart-axis {
  stroke: var(--line);
  stroke-width: 1;
}

.chart-line {
  fill: none;
  stroke: var(--fg);
  stroke-width: 1.5;
}

.chart-dot {
  fill: var(--fg);
}

.chart-bar {
  fill: var(--fg);
}

.chart-label,
.chart-value {
  fill: var(--fg);
  font-size: 11px;
  font-family: 'Space Grotesk', system-ui, sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

@media (max-width: 480px) {
  main {
    padding: 24px 16px 80px;
  }

  .stat-row {
    gap: 20px;
  }
}