/*
 * [站点注释 Site Note]
 * 文件: D:\Documents\GitHub\whwdzg.github.io\css\tool-scientific-calc.css
 * 作用: 页面样式与布局规则，按模块拆分维护。
 * English: Module-level styles for layout and presentation.
 */
.calc-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.calc-ans {
  font-weight: 700;
  color: var(--text-color, #111827);
}

#calc-input,
#calc-latex-raw {
  width: 100%;
  max-width: 100%;
  font-family: var(--font-mono, "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif);
  font-size: 1rem;
  border-radius: 10px;
  padding: 0.95rem;
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.1));
  background: var(--card-bg, #ffffff);
  color: var(--text-color, #111827);
  resize: vertical;
  box-shadow: 0 10px 30px var(--shadow-color, rgba(15, 23, 42, 0.18));
  backdrop-filter: blur(6px);
  transition: border 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-sizing: border-box;
  min-height: 110px;
}

#calc-latex-raw {
  min-height: 88px;
}

#calc-input:focus,
#calc-latex-raw:focus {
  outline: none;
  border-color: var(--border-color);
  background: var(--input-focus-bg);
  box-shadow: 0 -2px 0 0 var(--primary-color) inset, 0 0 0 1px var(--hover-bg);
}

#calc-latex-raw[readonly] {
  opacity: 0.96;
}

.calc-result {
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.1));
  color: var(--text-color, #111827);
  box-shadow: 0 6px 16px var(--shadow-color, rgba(15, 23, 42, 0.12));
}

.calc-result[data-state="error"] {
  color: var(--color-danger, #ef4444);
  border-color: color-mix(in srgb, var(--color-danger, #ef4444) 45%, var(--border-color, rgba(0, 0, 0, 0.1)));
  background: color-mix(in srgb, var(--color-danger, #ef4444) 8%, var(--card-bg, #ffffff));
}

.calc-result[data-state="success"] {
  color: var(--color-secondary, #10b981);
  border-color: color-mix(in srgb, var(--color-secondary, #10b981) 45%, var(--border-color, rgba(0, 0, 0, 0.1)));
  background: color-mix(in srgb, var(--color-secondary, #10b981) 8%, var(--card-bg, #ffffff));
}

.calc-func-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 0.5rem 0.65rem;
}

.calc-func-row label {
  font-weight: 700;
  color: var(--text-color, #111827);
}

.calc-func-row input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.1));
  background: var(--card-bg, #ffffff);
  color: var(--text-color, #111827);
  padding: 0.5rem 0.65rem;
  box-shadow: 0 6px 18px var(--shadow-color, rgba(15, 23, 42, 0.12));
  box-sizing: border-box;
}

.calc-func-row input:focus {
  outline: none;
  border-color: var(--border-color);
  background: var(--input-focus-bg);
  box-shadow: 0 -2px 0 0 var(--primary-color) inset, 0 0 0 1px var(--hover-bg);
}

body.dark-mode .calc-result {
  color: var(--text-color, #f3f4f6);
  border-color: var(--border-color, rgba(255, 255, 255, 0.12));
  background: color-mix(in srgb, var(--card-bg, #111827) 88%, #000 12%);
}

body.dark-mode .calc-result[data-state="error"] {
  color: #fca5a5;
  border-color: color-mix(in srgb, #ef4444 55%, var(--border-color, rgba(255, 255, 255, 0.12)));
  background: color-mix(in srgb, #ef4444 14%, var(--card-bg, #111827));
}

body.dark-mode .calc-result[data-state="success"] {
  color: #6ee7b7;
  border-color: color-mix(in srgb, #10b981 55%, var(--border-color, rgba(255, 255, 255, 0.12)));
  background: color-mix(in srgb, #10b981 14%, var(--card-bg, #111827));
}

body.dark-mode .calc-func-row label {
  color: var(--text-color, #f3f4f6);
}

body.dark-mode .calc-func-row input {
  border-color: rgba(255, 255, 255, 0.1);
  background: var(--input-bg, #1f2937);
  color: var(--text-color, #f3f4f6);
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.55rem;
}

.calc-grid button {
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.15));
  background: var(--card-bg, #ffffff);
  color: var(--text-color, #111827);
  border-radius: 10px;
  padding: 0.55rem 0.35rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-grid .calc-math {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.08rem;
  font-family: "Cambria Math", "Times New Roman", "Noto Serif SC", serif;
  font-size: 1rem;
  line-height: 1;
  letter-spacing: 0.01em;
}

.calc-grid .calc-math-fn,
.calc-grid .calc-math-var,
.calc-grid .calc-math-symbol {
  font-style: italic;
}

.calc-grid .calc-math sup {
  font-size: 0.72em;
  line-height: 1;
  margin-left: 1px;
}

.calc-grid .calc-math-root {
  display: inline-flex;
  align-items: flex-start;
}

.calc-grid .calc-math-root-body {
  display: inline-flex;
  padding-left: 0.08rem;
  border-top: 1px solid currentColor;
  line-height: 0.95;
}

.calc-grid .calc-math-binom {
  display: inline-grid;
  grid-template-rows: 1fr 1fr;
  line-height: 0.9;
  border-left: 1px solid currentColor;
  border-right: 1px solid currentColor;
  padding: 0 0.2rem;
  font-size: 0.86em;
}

.calc-grid .calc-math-num {
  font-variant-numeric: oldstyle-nums tabular-nums;
}

.calc-grid .calc-math-op {
  font-size: 1.04rem;
}

.calc-grid .calc-math-word {
  letter-spacing: 0.02em;
  font-style: italic;
}

.calc-grid button:hover {
  filter: brightness(1.06);
}

.calc-grid button[data-action="solve"] {
  background: var(--color-accent, #3b82f6);
  color: #fff;
}

.calc-grid button[data-action="clear"] {
  background: var(--color-danger, #ef4444);
  color: #fff;
}

.calc-grid button[data-action="latex"],
.calc-grid button[data-action="plot"] {
  background: var(--color-secondary, #10b981);
  color: #fff;
}

body.dark-mode .calc-grid button {
  border-color: rgba(255, 255, 255, 0.12);
  background: var(--card-bg, #1f2937);
  color: var(--text-color, #f3f4f6);
}

body.dark-mode #calc-graph-canvas {
  border-color: rgba(255, 255, 255, 0.12);
  background: var(--card-bg, #111827);
}

.calc-grid button[data-action="solve"] .calc-math,
.calc-grid button[data-action="clear"] .calc-math,
.calc-grid button[data-action="latex"] .calc-math,
.calc-grid button[data-action="plot"] .calc-math {
  color: inherit;
}

.calc-grid .span2 {
  grid-column: span 2;
}

.calc-steps-card,
.calc-graph-card {
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.1));
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  background: var(--card-bg, #ffffff);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.1);
}

.calc-steps-card h3,
.calc-graph-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

#calc-steps {
  margin: 0;
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

#calc-graph-canvas {
  width: 100%;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
  background: var(--card-bg, #ffffff);
  display: block;
}

.calc-latex-wrapper {
  position: relative;
}

.calc-latex-render {
  min-height: 88px;
  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.1));
  border-radius: 10px;
  padding: 0.95rem;
  background: var(--card-bg, #ffffff);
  color: var(--text-color, #111827);
  box-shadow: 0 10px 30px var(--shadow-color, rgba(15, 23, 42, 0.18));
  font-family: "Cambria Math", "Times New Roman", "Noto Serif SC", serif;
  overflow: auto;
}

body.dark-mode .calc-latex-render {
  background: var(--input-bg, #1f2937);
  color: var(--text-color, #f3f4f6);
  border-color: rgba(255, 255, 255, 0.1);
}

@media (max-width: 900px) {
  .calc-func-row {
    grid-template-columns: auto 1fr;
  }
}