.gpc-tool-wrapper {
  max-width: 1100px;
  margin: 40px auto;
  padding: 20px;
  font-family: Arial, sans-serif;
  color: var(--gpc-dark, #2c1b10);
}

.gpc-tool-wrapper * {
  box-sizing: border-box;
}

.gpc-intro-content,
.gpc-outro-content {
  max-width: 900px;
  margin: 0 auto 26px;
  line-height: 1.7;
  color: #4d3a2a;
  font-size: 17px;
}

.gpc-outro-content {
  margin-top: 30px;
}

.gpc-outro-content h2,
.gpc-outro-content h3 {
  color: var(--gpc-dark, #2c1b10);
  margin-top: 24px;
}

.gpc-tool-card {
  background: var(--gpc-bg, #fffaf4);
  border: 1px solid #f1dfc8;
  border-radius: 22px;
  padding: 34px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.08);
}

.gpc-tool-header {
  text-align: center;
  margin-bottom: 30px;
}

.gpc-badge {
  display: inline-block;
  background: var(--gpc-primary, #b86524);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: bold;
  margin-bottom: 12px;
}

.gpc-tool-header h2 {
  font-size: 36px;
  margin: 10px 0;
  color: var(--gpc-dark, #2c1b10);
  line-height: 1.2;
}

.gpc-description {
  font-size: 17px;
  color: #5f4b3b;
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.6;
}

.gpc-description p {
  margin: 0;
}

.gpc-calculator {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 25px;
}

.gpc-input-group {
  display: flex;
  flex-direction: column;
}

.gpc-input-group label {
  font-weight: bold;
  margin-bottom: 8px;
  color: var(--gpc-dark, #342215);
}

.gpc-input-group input,
.gpc-input-group select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #d8c2a8;
  border-radius: 12px;
  font-size: 16px;
  background: #ffffff;
  color: #2c1b10;
}

.gpc-btn {
  grid-column: 1 / -1;
  background: var(--gpc-primary, #b86524);
  color: #ffffff;
  border: none;
  padding: 15px 20px;
  border-radius: 14px;
  font-size: 17px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s ease;
}

.gpc-btn:hover {
  filter: brightness(0.88);
}

.gpc-results {
  display: none;
  margin-top: 30px;
  background: var(--gpc-card, #ffffff);
  border-radius: 18px;
  padding: 26px;
  border: 1px solid #ead7bf;
}

.gpc-results h3 {
  text-align: center;
  color: var(--gpc-dark, #2c1b10);
  margin: 0 0 24px;
  font-size: 26px;
}

.gpc-result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.gpc-result-box {
  background: #fff4e8;
  border-radius: 16px;
  padding: 18px;
  text-align: center;
}

.gpc-result-box h4 {
  font-size: 15px;
  color: #5a3821;
  margin: 0 0 8px;
}

.gpc-result-box p {
  font-size: 20px;
  font-weight: bold;
  color: var(--gpc-dark, #2c1b10);
  margin: 0;
}

.gpc-list-card {
  background: #fbf7f1;
  border-radius: 16px;
  padding: 20px;
  margin-top: 16px;
}

.gpc-list-card h4 {
  margin: 0 0 12px;
  color: var(--gpc-dark, #2c1b10);
  font-size: 20px;
}

.gpc-list-card ul {
  margin: 0;
  padding-left: 22px;
}

.gpc-list-card li {
  margin-bottom: 8px;
  color: #4d3a2a;
  font-size: 16px;
}

.gpc-note {
  background: #fff0d9;
  border-left: 5px solid var(--gpc-primary, #b86524);
  padding: 15px;
  margin-top: 20px;
  border-radius: 10px;
  color: #4a3020;
  line-height: 1.5;
}

.gpc-copy-btn {
  margin-top: 20px;
  width: 100%;
  background: var(--gpc-dark, #2c1b10);
  color: #ffffff;
  border: none;
  padding: 14px 18px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
}

.gpc-copy-btn:hover {
  filter: brightness(0.85);
}

.gpc-copy-message {
  text-align: center;
  color: #2f7d32;
  font-weight: bold;
  margin-top: 10px;
}

@media (max-width: 900px) {
  .gpc-calculator,
  .gpc-result-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .gpc-tool-wrapper {
    padding: 12px;
    margin: 25px auto;
  }

  .gpc-tool-card {
    padding: 24px 18px;
  }

  .gpc-tool-header h2 {
    font-size: 28px;
  }

  .gpc-calculator,
  .gpc-result-grid {
    grid-template-columns: 1fr;
  }
}