/* 工程科學計算機 — 需先載入 calculator/style.css、header2026.css、footer2026.css */

.page-science-calc {
  min-height: 100vh;
}

.page-science-calc .science-main {
  padding: 1.5rem 1rem 2.5rem;
}

.page-science-calc .container {
  max-width: 800px;
  margin: 0 auto;
}

.page-science-calc .calculator-card {
  background: var(--surface);
  border-radius: 1rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-hover);
  overflow: visible;
  padding: 1.35rem 1.15rem 1.5rem;
  margin-bottom: 1.5rem;
}

.page-science-calc .card-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.25rem;
  color: var(--btn-primary);
}

.page-science-calc .display-section {
  background: var(--contrast);
  padding: 1.15rem 1.1rem;
  border-radius: 0.65rem;
  margin-bottom: 1rem;
}

.page-science-calc .mode-indicator {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.45rem;
  font-size: 0.82rem;
}

.page-science-calc .angle-mode {
  background: rgba(255, 255, 255, 0.12);
  padding: 0.2rem 0.55rem;
  border-radius: 0.35rem;
  color: var(--btn-tertiary);
  font-weight: 600;
}

.page-science-calc .memory-indicator {
  background: rgba(248, 113, 113, 0.35);
  padding: 0.2rem 0.55rem;
  border-radius: 0.35rem;
  color: #fecaca;
  font-weight: 600;
}

.page-science-calc .memory-indicator.hidden {
  opacity: 0;
  pointer-events: none;
}

.page-science-calc .calc-display {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  padding: 0.85rem 0.75rem;
  color: #fff;
  font-size: 1.65rem;
  font-family: ui-monospace, "Courier New", monospace;
  text-align: right;
  min-height: 3.25rem;
  overflow-x: auto;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-science-calc .scientific-section {
  margin-bottom: 0.85rem;
}

.page-science-calc .sci-buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
  touch-action: manipulation;
}

.page-science-calc .sci-btn {
  padding: 0.55rem 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  cursor: pointer;
  transition: background 0.12s, transform 0.1s;
  background: var(--bg-panel);
  color: var(--contrast);
  font-family: inherit;
}

.page-science-calc .sci-btn:hover {
  background: var(--brand-light);
  border-color: var(--btn-secondary);
}

.page-science-calc .sci-btn:active {
  transform: scale(0.97);
}

.page-science-calc .sci-btn.special {
  background: var(--btn-primary);
  color: #fff;
  border-color: var(--brand-dark);
}

.page-science-calc .sci-btn.special:hover {
  background: var(--brand-dark);
}

.page-science-calc .sci-btn sup {
  font-size: 0.7em;
}

.page-science-calc .standard-section {
  margin-bottom: 0.5rem;
}

.page-science-calc .std-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  touch-action: manipulation;
}

.page-science-calc .std-btn {
  padding: 0.85rem 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  cursor: pointer;
  transition: background 0.12s, transform 0.1s;
  background: var(--bg-panel);
  color: var(--contrast);
  touch-action: manipulation;
  font-family: inherit;
}

.page-science-calc .std-btn:hover {
  background: var(--brand-light);
}

.page-science-calc .std-btn:active {
  transform: scale(0.97);
}

.page-science-calc .std-btn.operator {
  background: var(--btn-primary);
  color: #fff;
  border-color: var(--brand-dark);
}

.page-science-calc .std-btn.operator:hover {
  background: var(--brand-dark);
}

.page-science-calc .equal-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  background: #166534;
  border: 1px solid #14532d;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
  margin-top: 0.45rem;
  font-family: inherit;
}

.page-science-calc .equal-btn:hover {
  background: #14532d;
  box-shadow: var(--shadow);
}

.page-science-calc .equal-btn:active {
  transform: scale(0.99);
}

.page-science-calc .history-section {
  background: var(--bg-panel);
  border-radius: 0.65rem;
  padding: 1.15rem 1rem 1.25rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.page-science-calc .history-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--contrast);
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.page-science-calc .clear-history {
  font-size: 0.82rem;
  color: var(--btn-primary);
  cursor: pointer;
  padding: 0.4rem 0.65rem;
  border-radius: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--btn-primary);
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
  font-weight: 600;
}

.page-science-calc .clear-history:hover {
  background: var(--btn-primary);
  color: #fff;
}

.page-science-calc .history-list {
  max-height: 300px;
  overflow-y: auto;
}

.page-science-calc .history-item {
  background: var(--surface);
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.35rem;
  border-radius: 0.45rem;
  font-family: ui-monospace, "Courier New", monospace;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  border: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text);
  word-break: break-all;
}

.page-science-calc .history-item:hover {
  background: var(--brand-light);
  border-color: var(--btn-secondary);
}

.page-science-calc .history-empty {
  text-align: center;
  color: var(--text-hint);
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
}

.page-science-calc .info-box {
  background: var(--surface);
  border-radius: 1rem;
  padding: 1.5rem 1.25rem;
  margin-top: 0;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.page-science-calc .info-box h3 {
  font-size: 1.25rem;
  color: var(--btn-primary);
  margin-bottom: 0.75rem;
}

.page-science-calc .info-box h4 {
  font-size: 1.05rem;
  color: var(--contrast);
  margin: 1.1rem 0 0.5rem;
}

.page-science-calc .info-box ul {
  list-style: none;
  padding-left: 0;
}

.page-science-calc .info-box li {
  padding: 0.35rem 0;
  line-height: 1.65;
  color: var(--text);
}

.page-science-calc .info-box strong {
  color: var(--btn-primary);
}

.page-science-calc .function-table {
  width: 100%;
  margin: 0.75rem 0;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.page-science-calc .function-table th,
.page-science-calc .function-table td {
  padding: 0.55rem 0.45rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.page-science-calc .function-table th {
  background: var(--bg-panel);
  font-weight: 600;
  color: var(--contrast);
}

.page-science-calc .history-list::-webkit-scrollbar {
  width: 6px;
}

.page-science-calc .history-list::-webkit-scrollbar-track {
  background: var(--bg-sub);
}

.page-science-calc .history-list::-webkit-scrollbar-thumb {
  background: var(--btn-tertiary);
  border-radius: 3px;
}

@media (min-width: 768px) {
  .page-science-calc .science-main {
    padding: 2rem 1.5rem 3rem;
  }

  .page-science-calc .calculator-card {
    padding: 1.65rem 1.5rem 1.75rem;
  }

  .page-science-calc .card-title {
    font-size: 1.75rem;
  }

  .page-science-calc .sci-buttons {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-science-calc .std-buttons {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-science-calc .calc-display {
    font-size: 1.85rem;
  }
}

@media (max-width: 767px) {
  .page-science-calc .sci-btn {
    font-size: 0.68rem;
    padding: 0.5rem 0.2rem;
  }

  .page-science-calc .std-btn {
    font-size: 1.05rem;
    padding: 0.75rem 0.4rem;
  }

  .page-science-calc .calc-display {
    font-size: 1.35rem;
  }
}