:root {
  --bg: #eef2f5;
  --surface: #ffffff;
  --line: #d4dde5;
  --text: #17202a;
  --muted: #667586;
  --accent: #0b6e69;
  --accent-2: #255f99;
  --danger: #a83b36;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.app {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #f7f9fb;
  padding: 24px 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 44px;
  background: var(--accent);
  border-radius: 6px;
  padding: 6px 8px;
  flex-shrink: 0;
}

.mark-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

h1, h2, h3, p {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.2;
}

.brand p,
.panel-header span,
.summary-label,
.eyebrow {
  color: var(--muted);
  font-size: 13px;
}

.equipment-tabs {
  display: grid;
  gap: 8px;
}

.tab {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  text-align: left;
  padding: 11px 12px;
  border-radius: 6px;
  cursor: pointer;
}

.tab.active {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
}

.tab-test {
  border-style: dashed;
  color: var(--accent-2);
}

.tab-test.active {
  background: var(--accent-2);
  border-color: var(--accent-2);
  border-style: solid;
  color: #fff;
}

.summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 12px;
  margin-top: 24px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.workspace {
  padding: 24px;
  display: grid;
  gap: 18px;
  align-content: start;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0;
  font-weight: 700;
}

h2 {
  font-size: 28px;
}

.status {
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
  border-color: #e0aaa6;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  padding: 16px;
}

.metric-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 14px;
}

.metric-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.metric-top strong {
  display: block;
  font-size: 14px;
  margin-bottom: 5px;
}

.metric-top span,
.metric-range {
  color: var(--muted);
  font-size: 13px;
}

.metric-top b {
  font-size: 22px;
  color: var(--accent);
}

.metric-chart {
  width: 100%;
  height: 88px;
  border-bottom: 1px solid var(--line);
}

.metric-chart polyline {
  fill: none;
  stroke: var(--accent-2);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.metric-range {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th, td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 13px;
  background: #f7f9fb;
}

.sort-button {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  cursor: pointer;
  font-weight: 700;
  white-space: nowrap;
}

.sort-button:hover {
  color: var(--accent-2);
}

tbody tr:hover {
  background: #e8f3f1;
}

.upload-section {
  margin-top: 20px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  display: grid;
  gap: 10px;
}

.upload-title-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.upload-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  margin: 0;
  line-height: 1;
}

.csv-help-btn {
  flex-shrink: 0;
  padding: 1px 7px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  line-height: 1.6;
  transition: background 0.15s, color 0.15s;
}

.csv-help-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.upload-label {
  display: grid;
  gap: 4px;
  font-size: 13px;
  color: var(--text);
}

.upload-label input[type="file"] {
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
}

.upload-btn {
  width: 100%;
  padding: 9px;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.upload-btn:hover {
  opacity: 0.85;
}

.upload-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.upload-errors {
  background: #fdf2f2;
  border: 1px solid #e0aaa6;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--danger);
  line-height: 1.6;
}

.upload-errors[hidden] {
  display: none;
}

.upload-errors ul {
  margin: 4px 0 0;
  padding-left: 16px;
}

.upload-errors strong {
  display: block;
  margin-bottom: 2px;
}

.modal-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.modal-open-btn {
  padding: 8px 4px;
  border-radius: 6px;
  border: 1.5px solid var(--accent);
  background: #fff;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-open-btn:hover {
  background: var(--accent);
  color: #fff;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-box {
  background: #fff;
  border-radius: 10px;
  padding: 32px;
  width: 80vw;
  max-width: 1000px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.modal-title {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--text);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: transparent;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
}

.modal-slider {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  line-height: 1;
  opacity: 0;
  transition: opacity 0.2s, background 0.15s;
}

.modal-slider:hover .slider-btn {
  opacity: 1;
}

.slider-btn:hover {
  background: rgba(0, 0, 0, 0.75);
}

#sliderPrev {
  left: 12px;
}

#sliderNext {
  right: 12px;
}

.slider-img {
  width: 100%;
  border-radius: 6px;
  border: 1px solid var(--line);
  transition: opacity 0.2s;
  display: block;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
  cursor: pointer;
  transition: background 0.15s;
}

.slider-dot.active {
  background: var(--accent);
}

@media (max-width: 760px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .workspace {
    padding: 16px;
  }

  .toolbar,
  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }
}