:root {
  --hdd-panel-width: 320px;
}

.hdd-explorer-shell {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  width: 100%;
  margin: 2rem 0;
}

.hdd-panel {
  flex: 0 0 var(--hdd-panel-width);
  background: #fff;
  border: 1px solid #d8d8d8;
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 96px;
}

body.dark .hdd-panel {
  background: #181818;
  border-color: #303030;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45);
}

.hdd-panel h3 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

.hdd-controls {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hdd-control label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.hdd-control small {
  display: block;
  margin-top: 0.2rem;
  color: #666;
  font-weight: 400;
}

body.dark .hdd-control small {
  color: #aaa;
}

.hdd-control input[type="search"],
.hdd-control input[type="number"],
.hdd-control select,
.hdd-control textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: 8px;
  border: 1px solid #cfcfcf;
  font-size: 0.95rem;
  box-sizing: border-box;
  background: #fff;
  color: inherit;
}

body.dark .hdd-control input[type="search"],
body.dark .hdd-control input[type="number"],
body.dark .hdd-control select {
  background: #1f1f1f;
  border-color: #3a3a3a;
  color: #eee;
}

.hdd-toggle-group {
  display: flex;
  gap: 0.5rem;
}

.hdd-toggle-group input[type="number"] {
  flex: 1;
  border-radius: 8px;
  border: 1px solid #cfcfcf;
  padding: 0.45rem 0.5rem;
  font-size: 0.95rem;
}

body.dark .hdd-toggle-group input[type="number"] {
  background: #1f1f1f;
  border-color: #3a3a3a;
  color: #eee;
}

.hdd-toggle-group button {
  flex: 1;
  border-radius: 8px;
  border: 1px solid #cfcfcf;
  padding: 0.5rem 0.75rem;
  background: transparent;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.hdd-toggle-group button.is-active {
  background: #111;
  color: #fff;
  border-color: #111;
}

body.dark .hdd-toggle-group button.is-active {
  background: #fafafa;
  color: #111;
  border-color: #fafafa;
}

.hdd-checkbox {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-weight: 500;
}

.hdd-group-list {
  border: 1px solid #cfcfcf;
  border-radius: 12px;
  padding: 0.5rem;
  max-height: 260px;
  overflow-y: auto;
  background: #fafafa;
}

body.dark .hdd-group-list {
  background: #111;
  border-color: #3a3a3a;
}

.hdd-group-option {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
  border: 1px solid transparent;
}

.hdd-group-option:hover {
  border-color: #999;
}

.hdd-group-option input {
  margin-right: 0.45rem;
}

.hdd-group-option strong {
  font-size: 0.95rem;
}

.hdd-group-meta {
  font-size: 0.82rem;
  color: #666;
}

.hdd-group-option input[type="checkbox"] {
  margin-top: 0.35rem;
}

body.dark .hdd-group-meta {
  color: #aaa;
}

.hdd-data-status.is-warn {
  color: #b35d00;
}

.hdd-data-status.is-error {
  color: #b00020;
}

.hdd-data-status.is-ok {
  color: #2e7d32;
}

body.dark .hdd-data-status.is-warn {
  color: #ffb74d;
}

body.dark .hdd-data-status.is-error {
  color: #ff8a80;
}

body.dark .hdd-data-status.is-ok {
  color: #9ccc65;
}

.hdd-panel button[type="button"],
.hdd-downloads button {
  border: none;
  border-radius: 999px;
  padding: 0.65rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  background: #111;
  color: #fff;
  transition: opacity 0.2s ease;
}

.hdd-panel button[type="button"]:hover,
.hdd-downloads button:hover {
  opacity: 0.8;
}

body.dark .hdd-panel button[type="button"],
body.dark .hdd-downloads button {
  background: #eee;
  color: #111;
}

.hdd-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hdd-stage-card {
  border: 1px solid #d8d8d8;
  border-radius: 16px;
  padding: 1.5rem;
  background: #fff;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

body.dark .hdd-stage-card {
  background: #151515;
  border-color: #2a2a2a;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.hdd-stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.hdd-data-status {
  font-size: 0.9rem;
  color: #666;
}

body.dark .hdd-data-status {
  color: #bbb;
}

.hdd-chart {
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px dashed #cfcfcf;
  border-radius: 12px;
  padding: 1.5rem;
  background: repeating-linear-gradient(
    135deg,
    rgba(17, 17, 17, 0.02),
    rgba(17, 17, 17, 0.02) 20px,
    rgba(17, 17, 17, 0.05) 20px,
    rgba(17, 17, 17, 0.05) 40px
  );
}

body.dark .hdd-chart {
  border-color: #3a3a3a;
  background: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.05),
    rgba(255, 255, 255, 0.05) 20px,
    rgba(255, 255, 255, 0.03) 20px,
    rgba(255, 255, 255, 0.03) 40px
  );
}

.hdd-chart ul {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}

.hdd-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hdd-summary {
  font-size: 0.9rem;
  line-height: 1.5;
}

.hdd-summary ul {
  padding-left: 1rem;
  margin: 0.5rem 0 0;
}

.hdd-empty {
  margin: 0.5rem 0;
  font-size: 0.9rem;
  color: #777;
}

@media (max-width: 960px) {
  .hdd-explorer-shell {
    flex-direction: column;
  }

  .hdd-panel {
    width: 100%;
    position: static;
  }
}