/* ============================================================
 * ltce.css — LLM Token Cost Estimator
 * Namespace: --ltce-* / .ltce-* (LLM Token Cost Estimator)
 * Repo: dlsome-top · Hugo 0.164 + PaperMod v7 (strict mode OK)
 * PaperMod .dark class compatible. Zero global pollution.
 * Self-test: all selectors prefixed with .ltce- (or scoped inside .ltce-tool)
 * ============================================================ */

/* ----- Light theme variables ----- */
.ltce-tool {
  --ltce-bg: #ffffff;
  --ltce-bg-elev: #f8fafc;
  --ltce-bg-elev-2: #f1f5f9;
  --ltce-bg-chip: #f1f5f9;
  --ltce-border: #e2e8f0;
  --ltce-border-strong: #cbd5e1;
  --ltce-fg: #0f172a;
  --ltce-fg-muted: #64748b;
  --ltce-fg-dim: #94a3b8;
  --ltce-primary: #1a73e8;
  --ltce-primary-hover: #1557b0;
  --ltce-primary-soft: #dbeafe;
  --ltce-accent: #10b981;
  --ltce-accent-hover: #059669;
  --ltce-accent-soft: #d1fae5;
  --ltce-warn: #f59e0b;
  --ltce-warn-soft: #fef3c7;
  --ltce-err: #ef4444;
  --ltce-err-soft: #fee2e2;

  --ltce-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --ltce-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --ltce-shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
  --ltce-radius: 8px;
  --ltce-radius-sm: 4px;
  --ltce-radius-lg: 12px;
  --ltce-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ltce-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;

  display: block;
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--ltce-bg);
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius-lg);
  box-shadow: var(--ltce-shadow-sm);
  font-family: var(--ltce-sans);
  color: var(--ltce-fg);
  font-size: 14px;
  line-height: 1.5;
}

/* ----- Dark theme (PaperMod .dark class) ----- */
.dark .ltce-tool {
  --ltce-bg: #1e1e24;
  --ltce-bg-elev: #2a2a32;
  --ltce-bg-elev-2: #34343c;
  --ltce-bg-chip: #2a2a32;
  --ltce-border: #3a3a44;
  --ltce-border-strong: #4a4a54;
  --ltce-fg: #e2e8f0;
  --ltce-fg-muted: #94a3b8;
  --ltce-fg-dim: #64748b;
  --ltce-primary: #60a5fa;
  --ltce-primary-hover: #3b82f6;
  --ltce-primary-soft: #1e3a8a;
  --ltce-accent: #34d399;
  --ltce-accent-hover: #10b981;
  --ltce-accent-soft: #064e3b;
  --ltce-warn: #fbbf24;
  --ltce-warn-soft: #78350f;
  --ltce-err: #f87171;
  --ltce-err-soft: #7f1d1d;
  --ltce-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --ltce-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --ltce-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* ----- Disclaimer (top banner) ----- */
.ltce-disclaimer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  background: var(--ltce-warn-soft);
  border: 1px solid var(--ltce-warn);
  border-radius: var(--ltce-radius);
  font-size: 13px;
  color: var(--ltce-fg);
}

.ltce-disclaimer-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.ltce-disclaimer[data-ltce-disclaimer-stale="true"] {
  background: var(--ltce-err-soft);
  border-color: var(--ltce-err);
}

/* ----- Section common ----- */
.ltce-section-title {
  margin: 0 0 0.75rem 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ltce-fg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ----- Models panel (multi-select chips) ----- */
.ltce-models {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--ltce-border);
}

.ltce-models-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.ltce-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ltce-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: var(--ltce-bg-chip);
  border: 1px solid var(--ltce-border);
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--ltce-fg);
  transition: all 120ms ease;
  user-select: none;
}

.ltce-chip:hover {
  border-color: var(--ltce-primary);
  background: var(--ltce-bg-elev);
}

.ltce-chip[data-ltce-selected="true"] {
  background: var(--ltce-primary-soft);
  border-color: var(--ltce-primary);
  color: var(--ltce-primary);
  font-weight: 600;
}

.ltce-chip[data-ltce-selected="true"] .ltce-chip-dot {
  background: var(--ltce-primary);
}

.ltce-chip[data-ltce-tier="flagship"] {
  border-left: 3px solid #1a73e8;
}

.ltce-chip[data-ltce-tier="mini"] {
  border-left: 3px solid #10b981;
}

.ltce-chip[data-ltce-tier="reasoning"] {
  border-left: 3px solid #f59e0b;
}

.ltce-chip[data-ltce-tier="self_hosted"] {
  border-left: 3px solid #6b7280;
  opacity: 0.85;
}

.ltce-chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ltce-border-strong);
  flex-shrink: 0;
}

.ltce-chip-name {
  white-space: nowrap;
}

.ltce-chip-price {
  font-family: var(--ltce-mono);
  font-size: 11px;
  color: var(--ltce-fg-muted);
  margin-left: 0.25rem;
}

/* ----- Inputs panel ----- */
.ltce-inputs {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--ltce-border);
}

.ltce-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.ltce-input-label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.ltce-input-label > span {
  font-size: 12px;
  font-weight: 600;
  color: var(--ltce-fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ltce-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--ltce-border-strong);
  border-radius: var(--ltce-radius);
  background: var(--ltce-bg);
  color: var(--ltce-fg);
  font-family: var(--ltce-mono);
  font-size: 14px;
  box-sizing: border-box;
  transition: border-color 120ms ease;
}

.ltce-input:focus {
  outline: none;
  border-color: var(--ltce-primary);
  box-shadow: 0 0 0 3px var(--ltce-primary-soft);
}

.ltce-input-large {
  font-size: 18px;
  font-weight: 600;
  padding: 0.75rem 1rem;
}

.ltce-input-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

/* ----- Buttons ----- */
.ltce-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--ltce-border-strong);
  border-radius: var(--ltce-radius);
  background: var(--ltce-bg-elev);
  color: var(--ltce-fg);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 120ms ease;
  user-select: none;
}

.ltce-btn:hover {
  border-color: var(--ltce-primary);
  background: var(--ltce-bg);
}

.ltce-btn:focus-visible {
  outline: 2px solid var(--ltce-primary);
  outline-offset: 2px;
}

.ltce-btn:active {
  transform: translateY(1px);
}

.ltce-btn-primary {
  background: var(--ltce-primary);
  color: #ffffff;
  border-color: var(--ltce-primary);
}

.ltce-btn-primary:hover {
  background: var(--ltce-primary-hover);
  border-color: var(--ltce-primary-hover);
}

.ltce-btn-small {
  padding: 0.4rem 0.75rem;
  font-size: 12px;
}

.ltce-btn-tiny {
  padding: 0.25rem 0.5rem;
  font-size: 11px;
}

.ltce-btn.active {
  background: var(--ltce-primary-soft);
  border-color: var(--ltce-primary);
  color: var(--ltce-primary);
}

/* ----- Advanced & cache details ----- */
.ltce-advanced, .ltce-cache, .ltce-token-estimator {
  margin-top: 0.75rem;
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius);
  background: var(--ltce-bg-elev);
}

.ltce-advanced > summary,
.ltce-cache > summary,
.ltce-token-estimator > summary {
  padding: 0.6rem 1rem;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--ltce-fg);
  user-select: none;
  list-style: none;
}

.ltce-advanced > summary::-webkit-details-marker,
.ltce-cache > summary::-webkit-details-marker,
.ltce-token-estimator > summary::-webkit-details-marker {
  display: none;
}

.ltce-advanced > summary::before,
.ltce-cache > summary::before,
.ltce-token-estimator > summary::before {
  content: "▶ ";
  display: inline-block;
  transition: transform 120ms ease;
  font-size: 10px;
  color: var(--ltce-fg-muted);
}

.ltce-advanced[open] > summary::before,
.ltce-cache[open] > summary::before,
.ltce-token-estimator[open] > summary::before {
  transform: rotate(90deg);
}

.ltce-advanced-body,
.ltce-cache-body {
  padding: 0.75rem 1rem 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.ltce-cache[data-ltce-cache-active="true"] > summary {
  color: var(--ltce-primary);
}

.ltce-cache[data-ltce-cache-active="true"] {
  border-color: var(--ltce-primary);
}

/* ----- Output: table ----- */
.ltce-output {
  margin-bottom: 1.25rem;
}

.ltce-output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.ltce-sort-toggle {
  display: flex;
  gap: 0.25rem;
}

.ltce-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius);
}

.ltce-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.ltce-table thead {
  background: var(--ltce-bg-elev);
}

.ltce-table th {
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ltce-fg-muted);
  border-bottom: 1px solid var(--ltce-border);
}

.ltce-table th[data-ltce-th-num],
.ltce-table td[data-ltce-td-num] {
  text-align: right;
  font-family: var(--ltce-mono);
}

.ltce-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--ltce-border);
  vertical-align: middle;
}

.ltce-table tbody tr:last-child td {
  border-bottom: none;
}

.ltce-table tbody tr {
  transition: background 100ms ease;
}

.ltce-table tbody tr:hover {
  background: var(--ltce-bg-elev);
}

.ltce-table tbody tr[data-ltce-cheapest="true"] {
  background: var(--ltce-accent-soft);
}

.ltce-table tbody tr[data-ltce-cheapest="true"] td {
  font-weight: 600;
}

.ltce-table-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ltce-table-provider {
  font-size: 11px;
  color: var(--ltce-fg-dim);
  font-weight: 400;
}

.ltce-badge-cheapest {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background: var(--ltce-accent);
  color: #ffffff;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.ltce-vs-delta {
  color: var(--ltce-fg-muted);
  font-size: 11px;
}

.ltce-vs-delta[data-ltce-delta-up="true"] {
  color: var(--ltce-err);
}

/* ----- Cards (monthly/yearly) ----- */
.ltce-cards {
  margin-bottom: 1.25rem;
  padding: 1rem;
  background: var(--ltce-bg-elev);
  border-radius: var(--ltce-radius);
}

.ltce-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.ltce-card {
  padding: 1rem;
  background: var(--ltce-bg);
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius);
  text-align: center;
  transition: transform 150ms ease;
}

.ltce-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--ltce-shadow-md);
}

.ltce-card[data-ltce-card-kind="monthly"],
.ltce-card[data-ltce-card-kind="yearly"] {
  border-top: 3px solid var(--ltce-primary);
}

.ltce-card[data-ltce-card-kind="single"] {
  border-top: 3px solid var(--ltce-accent);
}

.ltce-card-header {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ltce-fg-muted);
  margin-bottom: 0.5rem;
}

.ltce-card-value {
  font-family: var(--ltce-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--ltce-fg);
  margin-bottom: 0.5rem;
  word-break: break-all;
}

.ltce-card-footer {
  font-size: 11px;
  color: var(--ltce-fg-muted);
}

.ltce-savings {
  margin: 0;
  padding: 0.75rem 1rem;
  background: var(--ltce-accent-soft);
  border-radius: var(--ltce-radius);
  font-size: 13px;
  color: var(--ltce-fg);
  text-align: center;
}

.ltce-savings strong {
  color: var(--ltce-accent);
}

/* ----- Cache ROI panel ----- */
.ltce-roi {
  margin-bottom: 1.25rem;
  padding: 1rem;
  background: var(--ltce-bg-elev);
  border-left: 4px solid var(--ltce-primary);
  border-radius: var(--ltce-radius);
}

.ltce-roi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.ltce-roi-card {
  padding: 0.75rem;
  background: var(--ltce-bg);
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius);
  text-align: center;
}

.ltce-roi-card header {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ltce-fg-muted);
  margin-bottom: 0.4rem;
}

.ltce-roi-value {
  font-family: var(--ltce-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--ltce-accent);
}

.ltce-warn {
  margin: 0.5rem 0 0;
  font-size: 11px;
  color: var(--ltce-fg-muted);
  font-style: italic;
}

/* ----- Token estimator ----- */
.ltce-textarea {
  width: 100%;
  min-height: 80px;
  margin: 0.5rem 1rem;
  width: calc(100% - 2rem);
  resize: vertical;
  font-family: var(--ltce-mono);
  font-size: 13px;
}

.ltce-estimator-output {
  margin: 0.5rem 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--ltce-bg);
  border: 1px solid var(--ltce-border);
  border-radius: var(--ltce-radius);
  font-family: var(--ltce-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ltce-primary);
}

/* ----- Standard reference (data sources) ----- */
.ltce-standard {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--ltce-border);
  font-size: 11px;
  color: var(--ltce-fg-muted);
  line-height: 1.6;
}

.ltce-standard a {
  color: var(--ltce-primary);
  text-decoration: none;
  margin-right: 0.75rem;
}

.ltce-standard a:hover {
  text-decoration: underline;
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
  .ltce-tool {
    padding: 1rem;
    font-size: 13px;
  }

  .ltce-input-grid {
    grid-template-columns: 1fr;
  }

  .ltce-card-grid,
  .ltce-roi-grid {
    grid-template-columns: 1fr;
  }

  .ltce-table {
    font-size: 12px;
  }

  .ltce-table th,
  .ltce-table td {
    padding: 0.4rem 0.5rem;
  }

  .ltce-card-value {
    font-size: 18px;
  }

  .ltce-chips {
    gap: 0.35rem;
  }

  .ltce-chip {
    padding: 0.35rem 0.6rem;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .ltce-table th:nth-child(2),
  .ltce-table td:nth-child(2) {
    display: none;
  }
}

/* ----- A11y: focus indicators ----- */
.ltce-chip:focus-visible {
  outline: 2px solid var(--ltce-primary);
  outline-offset: 2px;
}

/* ----- Print friendly ----- */
@media print {
  .ltce-tool {
    box-shadow: none;
    border: 1px solid #000;
  }
  .ltce-disclaimer { background: #fff; }
  .ltce-advanced, .ltce-cache, .ltce-token-estimator { display: none; }
}