* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  background: radial-gradient(circle at top, #111827, #05080f 60%);
  color: #e5e7eb;
  transition: background 0.25s ease, color 0.25s ease;
}

.loader-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  gap: 12px;
  background: rgba(2, 6, 23, 0.82);
  backdrop-filter: blur(2px);
  transition: opacity 0.2s ease;
}

.loader-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.loader-spinner {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: 4px solid rgba(147, 197, 253, 0.25);
  border-top-color: #60a5fa;
  animation: spin 0.8s linear infinite;
}

.loader-text {
  margin: 0;
  color: #dbeafe;
  font-size: 14px;
  letter-spacing: 0.2px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: #1d4ed8;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 1000;
}

.skip-link:focus {
  left: 16px;
}

.shell {
  width: min(1400px, 94vw);
  margin: 0 auto;
}

.site-nav {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  gap: 8px;
  margin-bottom: 10px;
  scrollbar-width: none;
  padding: 2px 0;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav a {
  flex-shrink: 0;
}

.site-nav a,
.site-footer a {
  color: #93c5fd;
  text-decoration: none;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 6px 10px;
  background: rgba(15, 23, 42, 0.6);
}

.site-nav a[aria-current="page"] {
  color: #e5e7eb;
  border-color: #60a5fa;
}

.site-content {
  margin-top: 10px;
  padding: 16px;
}

.site-content h2 {
  color: #bfdbfe;
  margin-top: 20px;
}

.site-content p,
.site-content li {
  color: #cbd5e1;
  line-height: 1.6;
}

.site-content ul {
  padding-left: 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px 0 14px;
}

.eyebrow {
  margin: 0;
  color: #60a5fa;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.subtext {
  margin: 6px 0 0;
  color: #94a3b8;
}

.actions {
  display: flex;
  gap: 10px;
}

.actions button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Icons hidden on desktop, text shown */
.actions .btn-icon {
  display: none;
}

/* Filter toggle button — hidden on desktop */
.filter-toggle-btn {
  display: none;
  align-items: center;
  gap: 4px;
}

.filter-toggle-btn svg {
  vertical-align: middle;
}

/* Filter drawer close button — hidden on desktop */
.filter-close-btn {
  display: none;
}

/* Filter drawer header */
.filter-drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.filter-drawer-head h2 {
  margin: 0;
}

.filters {
  margin-top: 8px;
  padding: 16px;
}

/* Filter drawer overlay backdrop — hidden on desktop */
.filter-backdrop {
  display: none;
}

.panel {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.65), rgba(15, 23, 42, 0.65));
  border: 1px solid #334155;
  border-radius: 14px;
  backdrop-filter: blur(4px);
}

.filters h2,
.table-wrap h2,
.analytics-grid h2 {
  margin: 0 0 12px;
  font-size: 16px;
  color: #bfdbfe;
}

.filters .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

input,
select,
button {
  background: #0f172a;
  color: #e5e7eb;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px 10px;
}

button {
  cursor: pointer;
  background: linear-gradient(180deg, #2563eb, #1d4ed8);
  border: none;
  font-weight: 600;
}

button.ghost {
  background: transparent;
  border: 1px solid #334155;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.65), rgba(15, 23, 42, 0.65));
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 12px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 14px;
  color: #93c5fd;
}

.card p {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.analytics-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 2fr 1.2fr;
  gap: 12px;
}

.analytics-grid article {
  padding: 14px;
}

.bars {
  display: grid;
  gap: 8px;
}

.bar-row {
  display: grid;
  grid-template-columns: 160px 1fr 90px;
  gap: 10px;
  align-items: center;
}

.bar-label {
  color: #cbd5e1;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-track {
  background: #111827;
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
}

.bar-fill {
  height: 10px;
  background: linear-gradient(90deg, #22d3ee, #3b82f6);
}

.bar-value {
  text-align: right;
  font-size: 12px;
  color: #cbd5e1;
}

.insights {
  margin: 0;
  padding-left: 18px;
  color: #cbd5e1;
  display: grid;
  gap: 10px;
  font-size: 14px;
}

.pie-layout {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 14px;
  align-items: center;
}

.pie-chart {
  width: 140px;
  height: 140px;
  border-radius: 999px;
  border: 1px solid #334155;
}

.pie-legend {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 13px;
  color: #cbd5e1;
}

.pie-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pie-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
}

.trend-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.trend-head h2 {
  margin: 0;
  margin-right: auto;
}

.trend-label {
  font-size: 12px;
  color: #94a3b8;
}

#trendRange {
  min-width: 130px;
}

#priceTrendChart svg {
  width: 100%;
  height: auto;
  display: block;
}

.trend-grid {
  stroke: #1e293b;
  stroke-width: 1;
}

.trend-line {
  fill: none;
  stroke: #22d3ee;
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.trend-point {
  fill: #3b82f6;
}

.trend-bar {
  fill: #3b82f6;
  opacity: 0.92;
  cursor: pointer;
}

.trend-bar:hover {
  fill: #22d3ee;
}

.trend-axis-label {
  fill: #94a3b8;
  font-size: 11px;
}

.table-wrap {
  margin-top: 14px;
  padding: 14px;
}

.ai-panel {
  margin-top: 14px;
  padding: 14px;
}

.ai-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.ai-head h2 {
  margin: 0;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.ai-grid h3 {
  margin: 0 0 8px;
  font-size: 14px;
  color: #93c5fd;
}

.table-scroll {
  overflow: auto;
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #050b18;
  border: 1px solid #334155;
}

th,
td {
  border-bottom: 1px solid #1e293b;
  padding: 10px;
  text-align: left;
  font-size: 12px;
}

th {
  color: #93c5fd;
  position: sticky;
  top: 0;
  background: #0b1220;
}

#status {
  margin: 8px 0 0;
  color: #94a3b8;
  font-size: 13px;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  align-items: center;
  padding: 16px 0 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 0 30px;
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
  color: #94a3b8;
  font-size: 13px;
}

body[data-theme="light"] {
  background: radial-gradient(circle at top, #e9eef9, #f8fafc 60%);
  color: #0f172a;
}

body[data-theme="light"] .loader-overlay {
  background: rgba(248, 250, 252, 0.82);
}

body[data-theme="light"] .loader-spinner {
  border: 4px solid rgba(37, 99, 235, 0.2);
  border-top-color: #2563eb;
}

body[data-theme="light"] .loader-text {
  color: #1e3a8a;
}

body[data-theme="light"] .skip-link {
  background: #2563eb;
  color: #ffffff;
}

body[data-theme="light"] .site-nav a,
body[data-theme="light"] .site-footer a {
  color: #1d4ed8;
  border-color: #cbd5e1;
  background: rgba(255, 255, 255, 0.88);
}

body[data-theme="light"] .site-nav a[aria-current="page"] {
  color: #0f172a;
  border-color: #3b82f6;
}

body[data-theme="light"] .site-content h2,
body[data-theme="light"] .filters h2,
body[data-theme="light"] .table-wrap h2,
body[data-theme="light"] .analytics-grid h2 {
  color: #1e40af;
}

body[data-theme="light"] .site-content p,
body[data-theme="light"] .site-content li,
body[data-theme="light"] .bar-label,
body[data-theme="light"] .bar-value,
body[data-theme="light"] .insights,
body[data-theme="light"] .pie-legend {
  color: #334155;
}

body[data-theme="light"] .eyebrow {
  color: #2563eb;
}

body[data-theme="light"] .subtext,
body[data-theme="light"] #status,
body[data-theme="light"] .site-footer p {
  color: #475569;
}

body[data-theme="light"] .trend-label,
body[data-theme="light"] .trend-axis-label {
  color: #475569;
  fill: #475569;
}

body[data-theme="light"] .trend-grid {
  stroke: #cbd5e1;
}

body[data-theme="light"] .panel,
body[data-theme="light"] .card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(241, 245, 249, 0.94));
  border-color: #cbd5e1;
}

body[data-theme="light"] .card h3,
body[data-theme="light"] th,
body[data-theme="light"] .ai-grid h3 {
  color: #1d4ed8;
}

body[data-theme="light"] input,
body[data-theme="light"] select,
body[data-theme="light"] button {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #cbd5e1;
}

body[data-theme="light"] button {
  background: linear-gradient(180deg, #3b82f6, #2563eb);
  border: none;
  color: #ffffff;
}

body[data-theme="light"] button.ghost {
  background: #ffffff;
  border: 1px solid #93c5fd;
  color: #1e3a8a;
}

body[data-theme="light"] .bar-track {
  background: #e2e8f0;
}

body[data-theme="light"] .pie-chart {
  border-color: #cbd5e1;
}

body[data-theme="light"] table {
  background: #ffffff;
  border: 1px solid #cbd5e1;
}

body[data-theme="light"] th,
body[data-theme="light"] td {
  border-bottom: 1px solid #e2e8f0;
}

body[data-theme="light"] th {
  background: #eff6ff;
}

/* ---------- Tablet & below (≤960px) ---------- */
@media (max-width: 960px) {
  .analytics-grid {
    grid-template-columns: 1fr;
  }

  .bar-row {
    grid-template-columns: 120px 1fr 70px;
  }

  .pie-layout {
    grid-template-columns: 130px 1fr;
    gap: 12px;
  }

  .pie-chart {
    width: 130px;
    height: 130px;
  }

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

  .ai-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Small tablet & large mobile (≤768px) ---------- */
@media (max-width: 768px) {
  .shell {
    width: 96%;
    padding-left: 10px;
    padding-right: 10px;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 14px 0 10px;
  }

  .topbar > div:first-child {
    text-align: center;
  }

  .topbar h1 {
    font-size: 1.25rem;
  }

  .topbar .subtext {
    display: none;
  }

  .actions {
    justify-content: center;
    gap: 8px;
  }

  .actions button {
    font-size: 12px;
    padding: 8px 12px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    border-radius: 10px;
  }

  .actions .btn-icon {
    display: block;
  }

  .filters .grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .cards {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .card p {
    font-size: 18px;
  }

  .bar-row {
    grid-template-columns: 100px 1fr 60px;
    gap: 6px;
  }

  .bar-label {
    font-size: 12px;
  }

  /* Keep AI head side-by-side (heading + button) */
  .ai-head {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
  }

  /* Section headings centered */
  .filters h2,
  .table-wrap h2,
  .analytics-grid h2,
  .ai-head h2 {
    text-align: center;
    width: 100%;
  }

  /* Keep pie layout side-by-side, override 960px stacking */
  .pie-layout {
    grid-template-columns: 120px 1fr;
    justify-items: start;
  }

  .pie-chart {
    width: 120px;
    height: 120px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .site-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .site-content {
    padding: 12px;
  }

  th, td {
    padding: 8px 6px;
    font-size: 11px;
  }

  .trend-head select {
    min-width: 110px;
  }
}

/* ---------- Mobile (≤480px) ---------- */
@media (max-width: 480px) {
  .shell {
    width: 100%;
    padding-left: 14px;
    padding-right: 14px;
  }

  .topbar {
    padding: 10px 0 8px;
    gap: 8px;
  }

  .topbar h1 {
    font-size: 1.1rem;
  }

  .eyebrow {
    font-size: 10px;
  }

  /* Icon-only buttons on small mobile */
  .actions .btn-label {
    display: none;
  }

  .actions button {
    padding: 10px;
    border-radius: 12px;
    font-size: 0;
  }

  .actions .btn-icon {
    width: 20px;
    height: 20px;
  }

  .site-nav {
    gap: 6px;
  }

  .site-nav a,
  .site-footer a {
    padding: 5px 8px;
    font-size: 12px;
  }

  /* Show filter toggle button on mobile only */
  .filter-toggle-btn {
    display: inline-flex;
  }

  /* Show close button inside drawer */
  .filter-close-btn {
    display: inline-flex;
    align-items: center;
    padding: 4px;
    border: none;
  }

  /* Filter drawer: slide-in from right */
  .filters.shell {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: 85vw;
    max-width: 360px;
    margin: 0;
    padding: 20px 16px;
    z-index: 2000;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-radius: 14px 0 0 14px;
  }

  .filters.open {
    transform: translateX(0);
  }

  .filters .grid {
    grid-template-columns: 1fr;
  }

  /* Backdrop overlay */
  .filter-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1999;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .filter-backdrop.open {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .card {
    padding: 12px 14px;
  }

  .card h3 {
    font-size: 12px;
  }

  .card p {
    font-size: 16px;
  }

  .analytics-grid article {
    padding: 14px 16px;
  }

  .bar-row {
    grid-template-columns: 80px 1fr 55px;
    gap: 4px;
  }

  .bar-label {
    font-size: 11px;
  }

  .bar-value {
    font-size: 11px;
  }

  /* Pie chart side-by-side on mobile with smaller size */
  .pie-layout {
    grid-template-columns: 100px 1fr;
    gap: 10px;
  }

  .pie-chart {
    width: 100px;
    height: 100px;
  }

  .pie-legend {
    font-size: 11px;
    gap: 5px;
  }

  .trend-head {
    gap: 6px;
  }

  .trend-head h2 {
    font-size: 14px;
  }

  #trendRange {
    min-width: 100px;
    font-size: 12px;
  }

  .table-wrap {
    padding: 14px 16px;
  }

  th, td {
    padding: 6px 4px;
    font-size: 10px;
    white-space: nowrap;
  }

  .ai-panel {
    padding: 14px 16px;
  }

  /* AI head: heading + button side-by-side */
  .ai-head {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }

  .ai-head h2 {
    font-size: 15px;
    width: auto;
    text-align: left;
    margin-right: auto;
  }

  #refreshAiBtn {
    font-size: 11px;
    padding: 6px 8px;
    white-space: nowrap;
  }

  .ai-grid h3 {
    font-size: 13px;
  }

  .insights {
    font-size: 13px;
    padding-left: 14px;
  }

  .pagination {
    padding: 12px 0 20px;
  }

  .pagination button {
    padding: 8px 14px;
    font-size: 13px;
  }

  #pageLabel {
    font-size: 13px;
  }

  /* Section headings centered */
  .filters h2,
  .table-wrap h2,
  .analytics-grid h2 {
    font-size: 14px;
    text-align: center;
  }

  button {
    font-size: 13px;
    padding: 8px 10px;
  }

  input, select {
    font-size: 13px;
  }
}