/* ===== Dashboard-specific styles ===== */
.dash-section { padding: clamp(14px, 2.4vw, 28px) 0; }

.dash-section__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.dash-section__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.3vw, 1.7rem);
  color: var(--brand);
  letter-spacing: -0.01em;
}

/* Date range filter */
.range-filter {
  display: inline-flex;
  padding: 4px;
  background: #f1f0f7;
  border-radius: 999px;
  gap: 2px;
}
.range-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.range-btn:hover { color: var(--brand); }
.range-btn.is-active {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 10px rgba(108, 99, 255, 0.25);
}
.range-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--gap);
  margin-bottom: 2.4rem;
}

.stat-card {
  position: relative;
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.3rem 1rem;
  text-align: center;
  border: 1px solid rgba(108, 99, 255, 0.05);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
  overflow: hidden;
}
.stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  opacity: 0.8;
}
.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.stat-card__value {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
  color: var(--brand);
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.stat-card__label {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0.35rem 0 0;
  font-weight: 600;
}
.stat-card--streak .stat-card__value {
  background: linear-gradient(120deg, var(--accent), var(--highlight));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Charts */
.chart-container {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(108, 99, 255, 0.05);
  transition: box-shadow 0.3s var(--ease-out);
}
.chart-container:hover { box-shadow: var(--shadow-lg); }
.chart-container svg { width: 100%; height: auto; display: block; }

/* Chart entrance animations */
.chart-container svg polyline {
  stroke-dasharray: var(--dash, 2000);
  stroke-dashoffset: var(--dash, 2000);
  animation: draw 1.1s var(--ease-out) forwards;
}
.chart-container svg circle.dot {
  opacity: 0;
  animation: popIn 0.4s var(--ease-out) forwards;
}
.chart-container svg rect.bar {
  transform-origin: left center;
  transform: scaleX(0);
  animation: growBar 0.8s var(--ease-out) forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes popIn { to { opacity: 1; transform: scale(1); } }
@keyframes growBar { to { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce) {
  .chart-container svg polyline,
  .chart-container svg circle.dot,
  .chart-container svg rect.bar { animation: none; stroke-dashoffset: 0; opacity: 1; transform: none; }
}

/* Exercise tracker */
.exercise-filter-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.exercise-select {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: 2px solid #e8e8ef;
  color: var(--text);
  background: #fff;
  cursor: pointer;
  transition: border-color 0.2s ease;
}
.exercise-select:focus { outline: none; border-color: var(--brand); }
.exercise-meta {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 0.8rem;
  align-items: center;
}
.exercise-meta__item {
  background: #f5f5f7;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}
.exercise-meta__item strong { color: var(--brand); }

.pr-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: linear-gradient(120deg, #ffd166, var(--accent));
  color: #fff;
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 8px 18px rgba(255, 122, 192, 0.35);
  animation: prPulse 2s var(--ease-out) infinite;
}
@keyframes prPulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}

.trend-up { color: var(--highlight); font-weight: 800; }
.trend-down { color: var(--accent); font-weight: 800; }
.trend-flat { color: var(--muted); font-weight: 800; }

/* Muscle group bars */
.bar-label { font-size: 0.9rem; font-weight: 700; fill: var(--text); }
.bar-value { font-size: 0.8rem; font-weight: 600; fill: var(--muted); }

/* Sessions log */
.session-card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  border: 1px solid rgba(108, 99, 255, 0.05);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s ease;
}
.session-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.session-card:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.session-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.session-card__date {
  font-weight: 800;
  color: var(--brand);
  font-size: 1.05rem;
}
.session-card__type {
  background: #f5f5f7;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
}
.session-card__stats {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.82rem;
  flex-wrap: wrap;
}
.session-card__details {
  display: none;
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid #f0f0f0;
}
.session-card__details.open { display: block; }
.session-card__details table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.session-card__details th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid #f0f0f0;
}
.session-card__details td { padding: 0.3rem 0.5rem; }

/* Loading & error */
.loading { text-align: center; padding: 4rem 0; }
.spinner {
  display: inline-block;
  width: 44px; height: 44px;
  border: 4px solid #f0f0f0;
  border-top-color: var(--brand);
  border-right-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-msg {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--muted);
  border-left: 4px solid var(--accent);
}
.error-msg strong { color: var(--text); }
.error-msg code {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  word-break: break-all;
  background: #f5f5f7;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* Tooltip */
.chart-tooltip {
  position: absolute;
  background: var(--text);
  color: #fff;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  pointer-events: none;
  white-space: nowrap;
  z-index: 50;
  display: none;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* Responsive */
@media (max-width: 1000px) {
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .exercise-filter-row { flex-direction: column; }
  .session-card__header { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 400px) {
  .hero-stats { grid-template-columns: 1fr; }
}