:root {
  --bg-top: #f7efe4;
  --bg-bottom: #d9e4f5;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-border: rgba(15, 23, 42, 0.08);
  --text: #132238;
  --muted: #596579;
  --accent: #c2410c;
  --accent-2: #0f766e;
  --danger: #b91c1c;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.background {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(194, 65, 12, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(15, 118, 110, 0.12), transparent 30%);
  pointer-events: none;
}

.shell {
  position: relative;
  max-width: 1220px;
  margin: 0 auto;
  padding: 32px 18px 48px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.login-panel {
  max-width: 440px;
  margin: 10vh auto 0;
  padding: 32px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: start;
  padding: 28px;
  margin-bottom: 20px;
}

.hero h1,
.login-panel h1 {
  margin: 8px 0 10px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.95;
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.collapse-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 14px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.panel-head-wrap {
  flex-wrap: wrap;
}

.collapsible-head {
  align-items: start;
}

.collapsible-head-actions,
.daily-card-head-actions {
  display: flex;
  align-items: start;
  gap: 10px;
  flex-wrap: wrap;
}

.daily-card-head-actions {
  margin-left: auto;
}

.collapse-toggle {
  white-space: nowrap;
}

.collapsible-body[hidden] {
  display: none !important;
}

.export-actions,
.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.small-button {
  padding: 8px 12px;
  border-radius: 12px;
}

.export-note {
  font-size: 0.88rem;
}

.grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.setup-panel,
.stats-panel,
.chart-panel {
  padding: 22px;
}

.charts-stack {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.section-title,
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
}

.stack {
  display: grid;
  gap: 14px;
}

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

.compact-row button {
  width: 100%;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.92);
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

button.secondary {
  background: var(--accent-2);
}

button.ghost {
  background: rgba(19, 34, 56, 0.08);
  color: var(--text);
}

.results,
.selected-list,
.status-box,
.archive-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.result-card,
.selected-card,
.status-card {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.status-card {
  display: grid;
  gap: 8px;
  align-items: start;
}

.result-meta {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.selected-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}

.picker-head,
.station-badge,
.price-pair {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.selection-counter {
  color: var(--muted);
  font-size: 0.9rem;
}

.location-note {
  margin-top: 6px;
}

.picker-card {
  margin-top: 14px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.picker-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  margin-top: 10px;
  align-items: center;
}

.preview-label {
  margin-bottom: -2px;
}

.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.error {
  color: var(--danger);
  min-height: 1.1em;
}

.chart-host {
  min-height: 340px;
}

.daily-charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.fuel-charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}

.monthly-fuel-grid {
  margin-top: 6px;
}

.fuel-chart-card {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.7);
}

.daily-card {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.72);
}

.daily-card-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.daily-price-block {
  display: grid;
  gap: 4px;
  justify-items: end;
  white-space: nowrap;
  font-weight: 600;
}

.difference-pill {
  display: inline-flex;
  width: fit-content;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.10);
  color: #0f766e;
  font-size: 0.9rem;
}

.mini-stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 12px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.small-chart {
  min-height: 280px;
}

.table-wrap {
  margin-top: 18px;
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
}

.compare-table th,
.compare-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.compare-table th {
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.chart-svg {
  width: 100%;
  height: auto;
  margin-top: 14px;
}

.axis-label {
  font-size: 12px;
  fill: rgba(19, 34, 56, 0.72);
}

.legend,
.dual-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

.legend-dash {
  width: 20px;
  border-top: 3px dashed currentColor;
  display: inline-block;
}

.archive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.archive-column {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.archive-title {
  font-weight: 700;
}

.archive-link {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
  background: rgba(19, 34, 56, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.archive-link:hover {
  background: rgba(19, 34, 56, 0.08);
}

.archive-label {
  margin-bottom: 4px;
}

.hidden {
  display: none;
}

@media (max-width: 920px) {
  .grid,
  .two-col,
  .hero,
  .picker-row,
  .archive-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .hero-actions {
    justify-content: start;
  }

  .result-card,
  .selected-card,
  .status-card {
    align-items: start;
    flex-direction: column;
  }

  .result-meta,
  .daily-price-block {
    justify-items: start;
  }

  .daily-card-head,
  .panel-head {
    flex-direction: column;
  }

  .collapsible-head-actions,
  .daily-card-head-actions {
    margin-left: 0;
    width: 100%;
  }
}

.demo-note {
  margin: 0 0 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(194, 65, 12, 0.08);
  color: #8a3412;
  border: 1px solid rgba(194, 65, 12, 0.14);
}