header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 14px 18px 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(5,10,18,.92), rgba(5,10,18,.68));
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid var(--panel-border);
  box-shadow: 0 12px 28px rgba(0,0,0,.32);
}

.mobile-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background: var(--panel-color);
  color: var(--text-color);
  font-size: 13px;
  padding: 8px 14px;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand h1 {
  margin: 0;
  font-size: clamp(18px, 2.6vw, 24px);
  letter-spacing: .4px;
  font-weight: 800;
  color: var(--text-color);
}

.brand span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), transparent 60%);
  box-shadow: var(--accent-glow);
  color: #01060c;
  font-weight: 800;
  font-size: 18px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.toolbar button,
.toolbar select,
.toolbar input {
  font-family: inherit;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background: rgba(0,0,0,.18);
  color: var(--text-color);
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.2;
  transition: border .2s ease, transform .2s ease, box-shadow .3s ease;
  backdrop-filter: blur(6px);
}

.toolbar button.primary {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 1px rgba(0,0,0,.16) inset;
}

.toolbar button.primary.active {
  background: var(--accent);
  color: #021314;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(0, 255, 213, .28);
}

.toolbar button.danger.active {
  background: var(--negative);
  border-color: var(--negative);
  color: #fff;
}

.toolbar button:hover:not(:disabled) {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.toolbar button:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 14px;
  border: 1px solid var(--panel-border);
  background: rgba(0,0,0,.18);
  font-size: 13px;
}

.switcher label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.switcher input {
  appearance: none;
  width: 32px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.16);
  border: 1px solid var(--panel-border);
  position: relative;
  outline: none;
  transition: background .2s ease;
}

.switcher input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-color);
  transition: transform .2s ease;
}

.switcher input:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.switcher input:checked::after {
  transform: translateX(14px);
  background: #021314;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: var(--chips-padding, 12px 18px 4px);
  justify-content: center;
}

.filters-panel {
  margin: 14px 18px;
  border-radius: 22px;
  border: 1px solid var(--panel-border);
  background: var(--panel-color);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(150%);
  overflow: hidden;
  transition: box-shadow .3s ease, border-color .3s ease;
}

.filters-panel__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--text-color);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: background .25s ease;
}

.filters-panel__toggle:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 2px;
}

.filters-panel__toggle:hover {
  background: color-mix(in srgb, var(--panel-border) 22%, transparent);
}

.filters-panel__toggle::after {
  content: '';
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .3s ease, border-color .3s ease;
}

.filters-panel.collapsed .filters-panel__toggle::after {
  transform: rotate(-135deg);
}

.filters-panel__label {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: 12px;
  color: var(--muted);
}

.filters-panel__action {
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.filters-panel__content {
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: hidden;
  max-height: 1600px;
  transition: max-height .35s ease, opacity .3s ease, padding .35s ease;
  padding: 4px 0 10px;
}

.filters-panel.collapsed .filters-panel__content {
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
  pointer-events: none;
}

.filters-panel.collapsed .chips {
  --chips-padding: 0 18px 0;
}

.filters-panel.collapsed .filters-panel__action {
  color: var(--accent);
}

.filters-panel.collapsed .filters-panel__toggle::after {
  border-color: var(--accent);
}

.insights {
  margin: 12px 18px 10px;
  padding: 14px 18px;
  border-radius: 20px;
  border: 1px solid var(--panel-border);
  background: var(--panel-color);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(150%);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

main {
  padding: 14px clamp(12px, 4vw, 28px) 60px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(16px, 2vw, 22px);
}

@media (max-width: 960px) {
  header {
    justify-content: center;
    gap: 10px;
  }
  .toolbar {
    justify-content: center;
  }
  .filters-panel {
    margin: 10px 12px;
  }
  .insights {
    margin: 10px 12px;
    padding: 12px 14px;
  }
  main {
    padding: 12px 12px 48px;
  }
  .chart-shell {
    height: 320px;
  }
}

@media (max-width: 840px) {
  .mobile-toggle {
    display: inline-flex;
  }
  .toolbar {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 4px;
    padding: 14px;
    border-radius: 18px;
    background: var(--panel-color);
    box-shadow: var(--shadow);
  }
  .toolbar.open {
    display: flex;
  }
  .toolbar button,
  .toolbar select,
  .toolbar input {
    width: 100%;
  }
  .chips {
    justify-content: flex-start;
    overflow-x: auto;
    padding-inline: 12px;
  }
  .chips::-webkit-scrollbar {
    display: none;
  }
  .insights {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }
}

@media (max-width: 640px) {
  header {
    padding-bottom: 12px;
  }
  .insights {
    grid-template-columns: minmax(0, 1fr);
  }
  .grid {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .card {
    border-radius: 18px;
  }
  .chart-shell {
    height: 300px;
  }
  .card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .pattern-pill {
    width: 100%;
    max-width: 100%;
  }
  .direction-pill {
    align-self: flex-start;
  }
  .card-tools {
    align-self: flex-end;
  }
}