/**
 * Sankhya Calculator Styles — P6
 * Dedicated symbolic calculator widget (#sankhya-calc-widget).
 * Scoped under .sankhya-calc-widget to prevent global style bleed.
 * Brand palette: Ocean #0D3B6E · Forest #2D6A4F · Gold #C8963E
 */

.sankhya-calc-widget {
  margin: 0 0 3rem;
}

.sankhya-calc-widget .sc-card {
  background: #fff;
  border: 1px solid rgba(13, 59, 110, 0.15);
  border-top: 4px solid var(--ocean, #0D3B6E);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 6px 22px rgba(13, 59, 110, 0.08);
}

/* Header */
.sankhya-calc-widget .sc-head {
  margin-bottom: 1.25rem;
}

.sankhya-calc-widget .sc-title {
  margin: 0 0 0.4rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ocean, #0D3B6E);
}

.sankhya-calc-widget .sc-lede {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text, #333);
}

.sankhya-calc-widget .sc-lede code {
  background: rgba(13, 59, 110, 0.07);
  padding: 0.05em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--ocean, #0D3B6E);
}

/* Input row */
.sankhya-calc-widget .sc-input-row {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.sankhya-calc-widget .sc-input {
  flex: 1 1 260px;
  min-width: 0;
  padding: 0.7rem 0.9rem;
  font-size: 1.05rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  color: var(--text, #222);
  background: #fbfcfe;
  border: 1.5px solid rgba(13, 59, 110, 0.3);
  border-radius: 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sankhya-calc-widget .sc-input:focus {
  outline: none;
  border-color: var(--ocean, #0D3B6E);
  box-shadow: 0 0 0 3px rgba(13, 59, 110, 0.12);
}

.sankhya-calc-widget .sc-eval-btn {
  flex: 0 0 auto;
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--forest, #2D6A4F);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

.sankhya-calc-widget .sc-eval-btn:hover {
  background: #24583f;
}

.sankhya-calc-widget .sc-eval-btn:active {
  transform: translateY(1px);
}

.sankhya-calc-widget .sc-eval-btn:focus-visible {
  outline: 2px solid var(--gold, #C8963E);
  outline-offset: 2px;
}

/* Clear button — secondary (outlined) style, sits between input and Evaluate */
.sankhya-calc-widget .sc-clear-btn {
  flex: 0 0 auto;
  padding: 0.7rem 1.15rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ocean, #0D3B6E);
  background: #fff;
  border: 1.5px solid rgba(13, 59, 110, 0.3);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}

.sankhya-calc-widget .sc-clear-btn:hover {
  background: #f0f3f8;
  border-color: var(--ocean, #0D3B6E);
}

.sankhya-calc-widget .sc-clear-btn:active {
  transform: translateY(1px);
}

.sankhya-calc-widget .sc-clear-btn:focus-visible {
  outline: 2px solid var(--gold, #C8963E);
  outline-offset: 2px;
}

/* Example + palette chips */
.sankhya-calc-widget .sc-examples,
.sankhya-calc-widget .sc-palette {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.sankhya-calc-widget .sc-examples-label,
.sankhya-calc-widget .sc-palette-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text, #555);
  margin-right: 0.15rem;
}

.sankhya-calc-widget .sc-example-chip,
.sankhya-calc-widget .sc-sym-chip {
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 999px;
  transition: all 0.15s ease;
}

.sankhya-calc-widget .sc-example-chip {
  color: var(--ocean, #0D3B6E);
  background: rgba(13, 59, 110, 0.06);
  border: 1px solid rgba(13, 59, 110, 0.2);
}

.sankhya-calc-widget .sc-example-chip:hover {
  background: rgba(13, 59, 110, 0.12);
}

.sankhya-calc-widget .sc-sym-chip {
  color: var(--gold-dark, #9a6f26);
  background: rgba(200, 150, 62, 0.1);
  border: 1px solid rgba(200, 150, 62, 0.35);
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

.sankhya-calc-widget .sc-sym-chip:hover {
  background: rgba(200, 150, 62, 0.22);
}

.sankhya-calc-widget .sc-example-chip:focus-visible,
.sankhya-calc-widget .sc-sym-chip:focus-visible {
  outline: 2px solid var(--gold, #C8963E);
  outline-offset: 2px;
}

/* Two labeled palette rows: Stable States + Universal Constants */
.sankhya-calc-widget .sc-palette-row {
  align-items: flex-start;
  flex-wrap: nowrap;
  gap: 0.6rem;
}
.sankhya-calc-widget .sc-palette-row .sc-palette-label {
  flex: 0 0 auto;
  min-width: 8.5rem;
  padding-top: 0.35rem;
  color: var(--ocean, #0D3B6E);
}
.sankhya-calc-widget .sc-palette-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex: 1 1 auto;
}
.sankhya-calc-widget .sc-sym-chip sub {
  font-size: 0.68em;
}
/* First row (Stable States) tinted forest-green to distinguish from constants */
.sankhya-calc-widget .sc-palette-row:first-of-type .sc-sym-chip {
  color: var(--forest, #2D6A4F);
  background: rgba(45, 106, 79, 0.10);
  border-color: rgba(45, 106, 79, 0.35);
}
.sankhya-calc-widget .sc-palette-row:first-of-type .sc-sym-chip:hover {
  background: rgba(45, 106, 79, 0.20);
}
@media (max-width: 560px) {
  .sankhya-calc-widget .sc-palette-row {
    flex-direction: column;
    gap: 0.3rem;
  }
  .sankhya-calc-widget .sc-palette-row .sc-palette-label {
    min-width: 0;
    padding-top: 0;
  }
}

/* Output */
.sankhya-calc-widget .sc-output {
  margin-top: 1.25rem;
  padding: 1.25rem;
  background: #f7f9fc;
  border: 1px solid rgba(13, 59, 110, 0.1);
  border-radius: 10px;
  min-height: 60px;
}

.sankhya-calc-widget .sc-result-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text, #666);
  margin-bottom: 0.6rem;
}

.sankhya-calc-widget .sc-mode-tag {
  padding: 0.12rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--ocean, #0D3B6E);
  background: rgba(13, 59, 110, 0.08);
  border-radius: 999px;
}

.sankhya-calc-widget .sc-result {
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--ocean, #0D3B6E);
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.25rem 0;
}

.sankhya-calc-widget .sc-result-num {
  font-weight: 600;
}

/* Hybrid mode: symbolic and numeric equations shown side by side. */
.sankhya-calc-widget .sc-result-hybrid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem 2rem;
}

.sankhya-calc-widget .sc-result-eq {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
  flex: 1 1 auto;
}

.sankhya-calc-widget .sc-eq-tag {
  font-family: var(--sans, sans-serif);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--forest, #2D6A4F);
}

.sankhya-calc-widget .sc-eq-body {
  overflow-x: auto;
  overflow-y: hidden;
}

/* Stack the two equations vertically on narrow screens. */
@media (max-width: 560px) {
  .sankhya-calc-widget .sc-result-hybrid {
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* Symbols-used legend */
.sankhya-calc-widget .sc-used {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed rgba(13, 59, 110, 0.18);
}

.sankhya-calc-widget .sc-used-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text, #666);
  margin-bottom: 0.5rem;
}

.sankhya-calc-widget .sc-used ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sankhya-calc-widget .sc-used li {
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  background: #fff;
  border: 1px solid rgba(13, 59, 110, 0.12);
  border-radius: 6px;
}

.sankhya-calc-widget .sc-used-id {
  font-weight: 700;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  color: var(--ocean, #0D3B6E);
}

.sankhya-calc-widget .sc-used-name {
  color: var(--text, #555);
}

.sankhya-calc-widget .sc-used-val {
  color: var(--forest, #2D6A4F);
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

/* Error + placeholder */
.sankhya-calc-widget .sc-error {
  color: #b3261e;
  background: rgba(179, 38, 30, 0.07);
  border: 1px solid rgba(179, 38, 30, 0.25);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  font-size: 0.95rem;
  line-height: 1.45;
}

.sankhya-calc-widget .sc-placeholder {
  color: var(--text, #888);
  font-style: italic;
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 640px) {
  .sankhya-calc-widget .sc-card {
    padding: 1.25rem;
  }
  .sankhya-calc-widget .sc-eval-btn,
  .sankhya-calc-widget .sc-clear-btn {
    flex: 1 1 100%;
  }
  .sankhya-calc-widget .sc-result {
    font-size: 1.1rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .sankhya-calc-widget .sc-eval-btn,
  .sankhya-calc-widget .sc-clear-btn,
  .sankhya-calc-widget .sc-example-chip,
  .sankhya-calc-widget .sc-sym-chip,
  .sankhya-calc-widget .sc-input {
    transition: none;
  }
}