/* ========================================
   TOOL PAGE STYLES
   ======================================== */

.tool-page {
  padding: 3rem 0;
}

.tool-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--border-color);
}

.tool-header h1 {
  margin-bottom: 1rem;
  color: var(--primary-color);
  font-size: 2.5rem;
}

.tool-intro {
  font-size: 1.1rem;
  color: var(--text-gray);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

/* Tool Tabs Navigation */
.tool-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  border-bottom: 2px solid var(--border-color);
  flex-wrap: wrap;
}

.tab-button {
  padding: 1rem 1.5rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-gray);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.tab-button:hover {
  color: var(--primary-color);
}

.tab-button.active {
  color: var(--primary-color);
  border-bottom-color: var(--accent-color);
}

/* Tool Content */
.tools-content {
  position: relative;
}

.tool-tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tool-tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tool Section */
.tool-section {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.tool-section h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  font-size: 1.8rem;
}

.section-desc {
  color: var(--text-gray);
  font-size: 1rem;
  margin-bottom: 2rem;
}

/* Tool Grid Layout */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.tool-box {
  background: linear-gradient(135deg, rgba(26, 58, 82, 0.02) 0%, rgba(39, 174, 96, 0.02) 100%);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.75rem;
}

.tool-box h3 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-size: 1.3rem;
  border-bottom: 2px solid var(--accent-light);
  padding-bottom: 1rem;
}

/* Calculator Box */
.calculator-box {
  border-left: 4px solid var(--primary-color);
}

/* Result Box */
.result-box {
  border-left: 4px solid var(--accent-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.result-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.result-item:last-child {
  border-bottom: none;
}

.result-item .label {
  font-weight: 600;
  color: var(--text-dark);
}

.result-item .value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  font-family: 'Courier New', monospace;
}

.result-item .value.highlight {
  color: var(--accent-color);
  font-size: 1.4rem;
}

.result-item .value.profit {
  color: var(--accent-color);
}

.result-item .value.roi-percent {
  color: var(--primary-color);
}

/* Converter Box */
.converter-box {
  border-left: 4px solid var(--accent-color);
}

.result-box p {
  margin: 0.75rem 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.result-box p.equals {
  color: var(--text-gray);
  font-size: 1rem;
  margin: 0.5rem 0;
}

.result-box .highlight {
  color: var(--accent-color);
  font-size: 1.3rem;
  font-weight: 700;
}

/* Forms */
.roi-form,
.converter-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.form-group input,
.form-group select {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s ease;
  background: white;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(26, 58, 82, 0.1);
}

.form-group small {
  font-size: 0.85rem;
  color: var(--text-gray);
  margin-top: 0.25rem;
}

/* Chart Selector */
.chart-selector,
.chart-controls {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.chart-selector label,
.chart-controls label {
  font-weight: 600;
  color: var(--text-dark);
  white-space: nowrap;
}

.chart-selector select,
.chart-controls select {
  flex: 1;
  min-width: 150px;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
}

/* TradingView Chart Container */
.tradingview-chart-container {
  width: 100%;
  height: 500px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 2rem;
  background: white;
}

#tradingview-chart {
  width: 100%;
  height: 100%;
}

/* Buttons */
.btn-block {
  width: 100%;
  padding: 1rem;
  margin-top: 0.5rem;
}

/* Tool Tips */
.tool-tips {
  background: rgba(39, 174, 96, 0.05);
  border-left: 4px solid var(--accent-color);
  padding: 1.5rem;
  border-radius: 4px;
  margin-top: 2rem;
}

.tool-tips p {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-weight: 600;
  color: var(--accent-color);
}

.tool-tips ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tool-tips li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  line-height: 1.6;
}

.tool-tips li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  .tool-tabs {
    margin-bottom: 2rem;
    gap: 0;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
  }

  .tab-button {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    flex-shrink: 0;
  }

  .tool-header h1 {
    font-size: 1.8rem;
  }

  .tool-section {
    padding: 1.5rem;
  }

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

  .tool-box {
    padding: 1.25rem;
  }

  .tool-box h3 {
    font-size: 1.1rem;
  }

  .chart-selector,
  .chart-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .chart-selector label,
  .chart-controls label {
    margin-bottom: 0.5rem;
  }

  .chart-selector select,
  .chart-controls select {
    flex: 1;
  }

  .tradingview-chart-container {
    height: 400px;
  }

  .result-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .result-item .value {
    font-size: 1.1rem;
  }

  .result-item .value.highlight {
    font-size: 1.2rem;
  }

  .tool-tips {
    padding: 1rem;
  }

  .tool-tips li {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .tool-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }

  .tool-intro {
    font-size: 0.95rem;
  }

  .tool-tabs {
    margin-bottom: 1.5rem;
    gap: 0.25rem;
  }

  .tab-button {
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
  }

  .tool-section {
    padding: 1rem;
  }

  .tool-section h2 {
    font-size: 1.3rem;
  }

  .tool-box {
    padding: 1rem;
  }

  .tool-box h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
  }

  .form-group input,
  .form-group select {
    padding: 0.6rem;
    font-size: 16px; /* 防止 iOS 自动放大 */
  }

  .btn,
  .btn-block {
    padding: 0.75rem;
    font-size: 0.9rem;
  }

  .chart-selector select,
  .chart-controls select {
    font-size: 0.9rem;
  }

  .tradingview-chart-container {
    height: 300px;
    margin-bottom: 1.5rem;
  }

  .result-item .value {
    font-size: 1rem;
  }

  .result-item .value.highlight {
    font-size: 1.1rem;
  }

  .tool-tips {
    padding: 0.75rem;
    margin-top: 1.5rem;
  }

  .tool-tips p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
  }

  .tool-tips li {
    padding-left: 1.25rem;
    font-size: 0.8rem;
    margin-bottom: 0.4rem;
  }
}