:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #111111);
  --hint: var(--tg-theme-hint-color, #999999);
  --link: var(--tg-theme-link-color, #2481cc);
  --button: var(--tg-theme-button-color, #2481cc);
  --button-text: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app { padding: 12px 16px 32px; }

.app-header h1 {
  font-size: 20px;
  margin: 8px 0 16px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 10px;
  background: var(--secondary-bg);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--button);
  color: var(--button-text);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.filter-row {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  overflow-x: auto;
}

.filter-btn {
  padding: 6px 12px;
  border: 1px solid var(--secondary-bg);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}

.filter-btn.active {
  background: var(--secondary-bg);
  font-weight: 600;
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feed-item {
  background: var(--secondary-bg);
  border-radius: 12px;
  padding: 12px 14px;
}

.feed-item .title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.feed-item .description {
  font-size: 13px;
  color: var(--hint);
  white-space: pre-line;
}

.feed-item .time {
  font-size: 11px;
  color: var(--hint);
  margin-top: 6px;
}

.loading, .empty, .error {
  color: var(--hint);
  text-align: center;
  padding: 24px 0;
  font-size: 14px;
}

.error { color: #e0245e; }

.dca-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dca-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--hint);
}

.dca-form input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--secondary-bg);
  background: var(--secondary-bg);
  color: var(--text);
  font-size: 15px;
}

.btn-primary {
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: var(--button);
  color: var(--button-text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

.dca-result {
  margin-top: 20px;
}

.dca-result .result-card {
  background: var(--secondary-bg);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
}

.dca-result h3 {
  font-size: 14px;
  margin: 0 0 8px;
}

.dca-result .row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 3px 0;
}

.dca-result .row .value { font-weight: 600; }

.pnl-positive { color: #26a17b; }
.pnl-negative { color: #e0245e; }

.chart-wrap {
  margin-top: 12px;
}

canvas#dca-chart {
  width: 100%;
  height: 160px;
  background: var(--secondary-bg);
  border-radius: 12px;
}