/* 169 黃金比例頁 — 需先載入 calculator/style.css、header2026.css */

.page-golden-ratio .container {
  max-width: 750px;
  margin: 0 auto;
  padding: 1.5rem 1rem 2.5rem;
}

.page-golden-ratio .card {
  background: var(--surface);
  border-radius: 1rem;
  box-shadow: var(--shadow-hover);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.page-golden-ratio .card-title {
  font-size: 1.65rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.5rem;
  color: #a80000;
}

.page-golden-ratio .golden-ratio-icon {
  text-align: center;
  font-size: 3.5rem;
  margin: 0.5rem 0 1rem;
  color: #a80000;
  font-weight: 700;
}

.page-golden-ratio .info-box {
  background: var(--bg-panel);
  border-left: 4px solid #a80000;
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.page-golden-ratio .info-box h3 {
  color: var(--contrast);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

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

.page-golden-ratio .info-box li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
  line-height: 1.6;
  color: var(--text);
}

.page-golden-ratio .info-box li::before {
  content: "✨";
  position: absolute;
  left: 0;
}

.page-golden-ratio .knowledge-box {
  background: var(--bg-panel);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.page-golden-ratio .knowledge-box h4 {
  color: var(--contrast);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-golden-ratio .knowledge-box p {
  color: var(--text);
  line-height: 1.8;
  margin: 0.75rem 0;
  text-align: justify;
}

.page-golden-ratio .knowledge-box strong {
  color: var(--contrast);
}

.page-golden-ratio .input-section {
  background: var(--bg-sub);
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 1.5rem 0;
  text-align: center;
}

.page-golden-ratio .input-label {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--contrast);
  margin-bottom: 1rem;
  display: block;
}

.page-golden-ratio .input-field {
  width: 100%;
  max-width: 400px;
  margin: 1rem auto;
  display: block;
  padding: 1rem 1.25rem;
  font-size: 1.35rem;
  border: 2px solid #a80000;
  border-radius: 0.75rem;
  text-align: center;
  transition: box-shadow 0.2s, border-color 0.2s;
  font-weight: 600;
  background: var(--surface);
  color: var(--contrast);
  font-family: inherit;
}

.page-golden-ratio .input-field:focus {
  outline: none;
  border-color: #a80000;
  box-shadow: 0 0 0 3px rgba(168, 0, 0, 0.15);
}

.page-golden-ratio .btn-calculate {
  background: #a80000;
  color: #fff;
  border: none;
  padding: 1.1rem 2.25rem;
  font-size: 1.15rem;
  font-weight: 700;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow);
  margin: 1.5rem auto;
  display: block;
  font-family: inherit;
}

.page-golden-ratio .btn-calculate:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.page-golden-ratio .divider {
  height: 2px;
  background: var(--btn-tertiary);
  margin: 2rem 0;
}

.page-golden-ratio .result-section {
  background: #e8f4ef;
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 1.5rem 0;
  border: 1px solid rgba(43, 62, 80, 0.12);
}

.page-golden-ratio .result-section h3 {
  text-align: center;
  color: var(--contrast);
  font-size: 1.35rem;
  margin-bottom: 1.5rem;
}

.page-golden-ratio .result-label {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--contrast);
  text-align: center;
  margin-bottom: 0.5rem;
}

.page-golden-ratio .result-formula {
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0.35rem 0;
  font-family: ui-monospace, monospace;
}

.page-golden-ratio .result-value {
  width: 100%;
  max-width: 400px;
  margin: 0.75rem auto;
  display: block;
  padding: 1.1rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: #a80000;
  border: 2px solid #a80000;
  background: var(--surface);
  text-align: center;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  font-family: inherit;
}

.page-golden-ratio .history-section {
  background: var(--bg-panel);
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.page-golden-ratio .history-section h3 {
  color: var(--contrast);
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
  text-align: center;
}

.page-golden-ratio .history-section p {
  color: var(--text);
  line-height: 1.8;
  margin: 1rem 0;
  text-align: justify;
}

.page-golden-ratio .golden-image {
  width: 100%;
  max-width: 600px;
  height: auto;
  margin: 1.5rem auto;
  display: block;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
}

.page-golden-ratio .application-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.page-golden-ratio .application-card {
  background: var(--surface);
  border-radius: 0.75rem;
  padding: 1.5rem;
  border-left: 4px solid #a80000;
  box-shadow: var(--shadow);
}

.page-golden-ratio .application-card h4 {
  color: var(--contrast);
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
}

.page-golden-ratio .application-card p {
  color: var(--text);
  line-height: 1.65;
}

.page-golden-ratio .formula-box {
  background: var(--surface);
  border: 2px dashed #a80000;
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
  text-align: center;
}

.page-golden-ratio .formula-box .formula-title {
  color: var(--contrast);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.page-golden-ratio .formula-box .formula {
  font-size: 1.35rem;
  font-weight: 700;
  color: #a80000;
  margin: 0.75rem 0;
  font-family: ui-monospace, monospace;
}

.page-golden-ratio .formula-box p {
  color: var(--text-muted);
  margin-top: 1rem;
}

.page-golden-ratio .highlight-box {
  background: var(--bg-sub);
  border-left: 4px solid #a80000;
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.page-golden-ratio .highlight-box h4 {
  color: var(--contrast);
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
}

.page-golden-ratio .highlight-box p {
  color: var(--text);
  line-height: 1.8;
  margin: 0.5rem 0;
}

.page-golden-ratio .fb-wrap {
  text-align: center;
  margin: 2rem 0;
}

@media (min-width: 768px) {
  .page-golden-ratio .container {
    padding: 2.5rem 1.5rem 3rem;
  }

  .page-golden-ratio .application-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-golden-ratio .application-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .page-golden-ratio .card-title {
    font-size: 1.35rem;
  }

  .page-golden-ratio .golden-ratio-icon {
    font-size: 2.75rem;
  }

  .page-golden-ratio .input-field {
    font-size: 1.15rem;
  }

  .page-golden-ratio .btn-calculate {
    font-size: 1.05rem;
    padding: 1rem 1.5rem;
  }

  .page-golden-ratio .result-value {
    font-size: 1.35rem;
  }
}