/* ── Reset & Telegram-native theming ─────────────────────────── */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #000000);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Tabs ────────────────────────────────────────────────────── */

#tabs {
  display: flex;
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--tg-theme-hint-color, #999)33;
}

.tab {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: none;
  color: var(--tg-theme-hint-color, #999);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s;
}

.tab.active {
  color: var(--tg-theme-button-color, #3390ec);
  border-bottom-color: var(--tg-theme-button-color, #3390ec);
}

/* ── Views ───────────────────────────────────────────────────── */

.view { display: none; padding: 16px; padding-bottom: 32px; }
.view.active { display: block; }

/* ── Cards ───────────────────────────────────────────────────── */

.card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

/* ── Buttons ─────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding: 12px 20px;
  width: 100%;
  transition: opacity 0.15s;
}

.btn:active { opacity: 0.7; transform: scale(0.97); }

.btn-primary {
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
}

.btn-secondary {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  color: var(--tg-theme-button-color, #3390ec);
  border: 1.5px solid var(--tg-theme-button-color, #3390ec);
}

/* ── Inputs ──────────────────────────────────────────────────── */

.input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1.5px solid var(--tg-theme-hint-color, #999)44;
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #000);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  resize: vertical;
  -webkit-appearance: none;
}

.input:focus {
  border-color: var(--tg-theme-button-color, #3390ec);
}

.hint {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  margin: 8px 0 12px;
  line-height: 1.4;
}

/* ── Suggestion chips ────────────────────────────────────────── */

.section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--tg-theme-hint-color, #999);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

#suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.chip {
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  color: var(--tg-theme-text-color, #000);
  border: 1px solid var(--tg-theme-hint-color, #999)33;
  cursor: pointer;
}

.chip:active { opacity: 0.7; }

/* ── History cards ───────────────────────────────────────────── */

.history-card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.history-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.history-date {
  font-size: 13px;
  color: var(--tg-theme-hint-color, #999);
  font-weight: 600;
}

.history-volume {
  font-size: 13px;
  font-weight: 600;
  color: var(--tg-theme-button-color, #3390ec);
}

.history-group {
  margin-bottom: 8px;
}

.superset-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--tg-theme-button-color, #3390ec);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.history-exercise {
  font-size: 14px;
  padding: 2px 0;
}

.history-exercise .ex-name {
  font-weight: 600;
}

.history-exercise .ex-machine {
  color: var(--tg-theme-hint-color, #999);
  font-size: 12px;
}

.history-exercise .ex-detail {
  color: var(--tg-theme-hint-color, #999);
}

/* ── Stats ───────────────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--tg-theme-button-color, #3390ec);
}

.stat-label {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* ── Empty state ─────────────────────────────────────────────── */

.empty-state { text-align: center; padding: 48px 16px; }
.empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { color: var(--tg-theme-hint-color, #999); font-size: 16px; }

/* ── Toast ───────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--tg-theme-text-color, #000);
  color: var(--tg-theme-bg-color, #fff);
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 1000;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}