/* Profit Genie Calculator - Compact Design */
/* Improved, more compact and professional design */

:root {
  --primary-color: #34495e;
  --primary-color-dark: #2c3e50;
  --secondary-color: #3498db;
  --success-color: #27ae60;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --background-color: #f5f7fa;
  --card-background: #ffffff;
  --text-color: #2c3e50;
  --border-color: #dcdfe6;
  --section-heading-bg: #ecf0f1;
  --readonly-background: #f8f9fa;
  --input-background: #ffffff;
  --input-border: #d1d5db;
}

[data-theme="dark"] {
  --primary-color: #5dade2;
  --primary-color-dark: #3498db;
  --secondary-color: #5dade2;
  --success-color: #2ecc71;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --background-color: #1a1d23;
  --card-background: #2c3e50;
  --text-color: #ecf0f1;
  --border-color: #34495e;
  --section-heading-bg: #34495e;
  --readonly-background: #1c2833;
  --input-background: #34495e;
  --input-border: #4a5568;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.5;
  transition: background-color 0.3s, color 0.3s;
}

header {
  background-color: var(--primary-color);
  color: white;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
  font-size: 1.3rem;
  font-weight: 600;
}

.theme-toggle-container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.4s;
}

input:checked + .slider {
  background-color: var(--secondary-color);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

.slider.round {
  border-radius: 24px;
}

.slider.round:before {
  border-radius: 50%;
}

/* Compact Tabs Design */
.tabs {
  overflow-x: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  -webkit-overflow-scrolling: touch;
  background-color: var(--card-background);
  border-bottom: 1px solid var(--border-color);
}

.tab,
.tab-button {
  flex: 0 0 auto;
  min-width: 100px;
  padding: 8px 12px;
  text-align: center;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-color);
  border-bottom: 3px solid transparent;
  transition: all 0.3s;
  white-space: nowrap;
  min-height: 40px;
  height: 40px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
}

.tab:hover,
.tab-button:hover {
  background-color: var(--section-heading-bg);
  color: var(--primary-color);
}

.tab.active,
.tab-button.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  font-weight: 600;
  background-color: var(--section-heading-bg);
}

/* Compact Tab Content */
.tab-content {
  padding: 16px;
  background-color: var(--card-background);
  border-radius: 0 0 8px 8px;
  max-width: 1200px;
  margin: 0 auto;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Control Section (Loan Data Status, etc.) */
.control-section {
  padding: 16px;
  margin: 16px 0;
  background-color: var(--card-background);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.control-section h3,
.control-section h4 {
  color: var(--text-color);
  margin-bottom: 12px;
  font-size: 1rem;
  font-weight: 600;
}

.control-section p {
  color: var(--text-color);
  margin: 6px 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Compact Section Headings */
.section-heading {
  background-color: var(--section-heading-bg);
  padding: 8px 12px;
  margin: 14px 0 10px 0;
  border-left: 3px solid var(--primary-color);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-color);
  border-radius: 4px;
}

/* Inline Form Groups - Labels on Left, Inputs on Right */
.form-group {
  margin-bottom: 8px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: center;
  max-width: 800px;
}

.form-group label {
  display: block;
  margin-bottom: 0;
  font-weight: 500;
  color: var(--text-color);
  font-size: 0.85rem;
  text-align: right;
  padding-right: 8px;
}

/* Mobile: Stack labels above inputs */
@media (max-width: 640px) {
  .form-group {
    grid-template-columns: 1fr;
    gap: 3px;
  }
  
  .form-group label {
    text-align: left;
    padding-right: 0;
  }
}

/* Compact Input Fields */
input[type="text"],
input[type="number"],
input[type="date"],
.form-group input,
.form-group select {
  font-size: 0.9rem;
  min-height: 32px;
  width: 350px;
  padding: 6px 10px;
  margin-left: auto;
  border-radius: 6px;
  border: 1px solid var(--input-border);
  background-color: var(--input-background);
  color: var(--text-color);
  box-sizing: border-box;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(52, 73, 94, 0.15);
}

.form-group input[readonly] {
  background-color: var(--readonly-background);
  cursor: not-allowed;
  font-weight: 500;
}

/* Compact Form Rows */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

@media (min-width: 480px) {
  .form-row {
    flex-direction: row;
    gap: 10px;
  }
}

@media (min-width: 768px) {
  .tab-content {
    padding: 20px 24px;
  }
  
  header h1 {
    font-size: 1.5rem;
  }
}

/* Compact Checkboxes */
.checkbox-group {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  min-height: 36px;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-right: 8px;
  min-height: 18px;
}

/* Compact Loan Selection Buttons */
.loan-selection-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.loan-btn {
  padding: 8px 14px;
  border: 2px solid var(--border-color);
  background: var(--card-background);
  color: var(--text-color);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  flex: 1;
  min-width: 120px;
  min-height: 36px;
  text-align: center;
}

.loan-btn:hover {
  background: var(--section-heading-bg);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.loan-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.loan-btn.combined {
  background: var(--success-color);
  border-color: var(--success-color);
  color: white;
}

/* Compact Results Section */
.results-section {
  margin-top: 20px;
  padding: 16px;
  background-color: var(--section-heading-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.result-item {
  padding: 12px;
  background-color: var(--card-background);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.result-label {
  font-size: 0.8rem;
  color: var(--text-color);
  margin-bottom: 4px;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.result-value.positive {
  color: var(--success-color);
}

.result-value.negative {
  color: var(--danger-color);
}

/* Compact Export Buttons */
.export-buttons {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.export-button {
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background-color 0.3s;
  flex: 1;
  min-width: 110px;
  min-height: 36px;
}

.export-button:hover {
  background-color: var(--primary-color-dark);
}

/* Profit/Loss Color Coding */
.profit-loss.positive {
  color: var(--success-color);
  font-weight: 600;
}

.profit-loss.negative {
  color: var(--danger-color);
  font-weight: 600;
}

/* Amortization Tables */
.amortization-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 0.85rem;
}

.amortization-table th,
.amortization-table td {
  padding: 8px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.amortization-table th {
  background-color: var(--section-heading-bg);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.amortization-table tr:hover {
  background-color: var(--section-heading-bg);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background-color);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Mobile Optimizations */
@media (max-width: 480px) {
  header {
    padding: 12px;
  }
  
  header h1 {
    font-size: 1.1rem;
  }
  
  .tab-content {
    padding: 12px;
  }
  
  .tabs {
    padding: 0 8px;
  }
  
  .tab,
  .tab-button {
    min-width: 85px;
    font-size: 0.8rem;
    padding: 6px 10px;
  }
}