:root {
  --primary: #5c7548;
  --primary-dark: #3d4d32;
  --primary-soft: #6c7460;
  --accent: #e8913a;
  --success: #4a7a3a;
  --error: #c0392b;
  --bg: #f4f6f2;
  --card: #ffffff;
  --border: #d4dece;
  --text: #2c3e2c;
  --muted: #7a8c78;
}

.isi-calculator-widget {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  line-height: 1.5;
}

.isi-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: white;
  padding: 32px 24px;
  text-align: center;
  border-radius: 12px 12px 0 0;
  margin-bottom: 20px;
}

.isi-title {
  font-size: 1.75em;
  font-weight: 700;
  margin-bottom: 8px;
}

.isi-subtitle {
  opacity: 0.9;
  font-size: 0.95em;
}

.isi-score-banner {
  background: var(--card);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.isi-score-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.isi-score-number {
  font-size: 3.5em;
  font-weight: 800;
  transition: color 0.3s ease;
}

.isi-score-number.pass {
  color: var(--success);
}

.isi-score-number.fail {
  color: var(--error);
}

.isi-score-label {
  font-size: 0.85em;
  color: var(--muted);
  font-weight: 500;
}

.isi-progress-section {
  flex: 1;
  min-width: 200px;
}

.isi-progress-bar {
  width: 100%;
  height: 12px;
  background: #dde4d8;
  border-radius: 6px;
  overflow: hidden;
}

.isi-progress-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.4s ease, background 0.3s;
}

.isi-progress-fill.pass {
  background: var(--success);
}

.isi-progress-fill.fail {
  background: var(--accent);
}

.isi-progress-label {
  font-size: 0.85em;
  color: var(--muted);
  font-weight: 600;
  margin-top: 6px;
}

.isi-score-target {
  text-align: right;
}

.isi-target {
  font-size: 0.95em;
  font-weight: 600;
  color: var(--text);
}

.isi-form {
  max-width: 900px;
  margin: 0 auto;
}

.isi-section {
  background: var(--card);
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.isi-section-header {
  background: var(--primary-dark);
  color: white;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.isi-section-header h3 {
  font-size: 1em;
  font-weight: 600;
  margin: 0;
}

.isi-section-score {
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.9em;
}

.isi-section-body {
  padding: 20px;
}

.isi-form-group {
  margin-bottom: 16px;
}

.isi-form-group:last-child {
  margin-bottom: 0;
}

.isi-form-group label,
.isi-checkbox-item label,
.isi-radio-item label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text);
}

.isi-form-group select,
.isi-form-group input[type='number'] {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95em;
  background: white;
  color: var(--text);
  transition: border-color 0.2s;
  font-family: inherit;
}

.isi-form-group select:focus,
.isi-form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.isi-checkbox-group,
.isi-radio-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.isi-checkbox-item,
.isi-radio-item {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
  user-select: none;
}

.isi-checkbox-item input[type='checkbox'],
.isi-radio-item input[type='radio'] {
  margin-top: 4px;
  margin-right: 10px;
  cursor: pointer;
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.isi-checkbox-item label,
.isi-radio-item label {
  margin: 0;
  cursor: pointer;
}

.isi-result-box {
  margin-top: 32px;
  padding: 24px;
  border-radius: 12px;
  border-left: 4px solid;
  transition: all 0.3s ease;
}

.isi-result-box.pass {
  background: #f0f7eb;
  border-left-color: var(--success);
  color: #2d5a2d;
}

.isi-result-box.fail {
  background: #fdf4f3;
  border-left-color: var(--error);
  color: var(--text);
}

.isi-result-box h3 {
  font-size: 1.25em;
  margin: 0 0 12px 0;
  font-weight: 700;
}

.isi-result-box p {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.6;
}

.isi-result-box strong {
  font-weight: 700;
}

.isi-form-container {
  margin-top: 32px;
  padding: 24px;
  background: var(--card);
  border-radius: 12px;
  border: 2px solid var(--success);
}

.isi-form-container h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--success);
  font-size: 1.1em;
}

.isi-btn-reset {
  display: block;
  margin-top: 24px;
  padding: 12px 24px;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 8px;
  font-size: 0.95em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.isi-btn-reset:hover {
  background: var(--primary);
  color: white;
}

.isi-btn-reset:active {
  transform: scale(0.98);
}

/* Responsive */
@media (max-width: 768px) {
  .isi-header {
    padding: 24px 16px;
  }

  .isi-title {
    font-size: 1.5em;
  }

  .isi-score-banner {
    flex-direction: column;
    gap: 16px;
  }

  .isi-score-number {
    font-size: 2.5em;
  }

  .isi-progress-section {
    width: 100%;
  }

  .isi-score-target {
    text-align: center;
  }

  .isi-section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .isi-section-score {
    align-self: flex-start;
  }

  .isi-checkbox-group,
  .isi-radio-group {
    gap: 10px;
  }
}

/* Print styles */
@media print {
  .isi-btn-reset {
    display: none;
  }

  .isi-calculator-widget {
    box-shadow: none;
  }

  .isi-section {
    page-break-inside: avoid;
  }
}