/* StripeFee - German Stripe Fee Calculator */
/* Based on Stripe's design language but adapted for German audience */

:root {
  --stripe-purple: #635bff;
  --stripe-purple-light: #7a73ff;
  --stripe-purple-dark: #4b45cc;
  --surface-bg: #f6f9fc;
  --card-bg: #ffffff;
  --text-primary: #1a1f36;
  --text-secondary: #4f566b;
  --border-color: #e3e8ee;
  --success-green: #32976e;
  --warning-orange: #f5a623;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
}

body.dark {
  --surface-bg: #0a0e1a;
  --card-bg: #121826;
  --text-primary: #ffffff;
  --text-secondary: #adbdcc;
  --border-color: #2a3547;
  --stripe-purple: #7a73ff;
  --stripe-purple-light: #9b94ff;
  --stripe-purple-dark: #554ec2;
}

/* Global App Header (for unified navigation) */
.app-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
  text-decoration: none;
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dark-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  color: var(--text-secondary);
}

.dark-btn:hover {
  border-color: var(--stripe-purple);
  color: var(--stripe-purple);
}

.back-link {
  font-size: 13px;
  color: var(--stripe-purple);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.back-link:hover {
  text-decoration: underline;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--surface-bg);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 40px;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

header .subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Calculator Form */
.calculator {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  margin-bottom: 32px;
}

.form-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field select,
.field input[type="number"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--card-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field select:focus,
.field input[type="number"]:focus {
  outline: none;
  border-color: var(--stripe-purple);
  box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.15);
}

.input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group:focus-within {
  border-color: var(--stripe-purple);
  box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.15);
}

.input-group .prefix,
.input-group .suffix {
  padding: 12px 12px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--surface-bg);
  border: none;
  white-space: nowrap;
}

.input-group .prefix {
  border-right: 1px solid var(--border-color);
}

.input-group .suffix {
  border-left: 1px solid var(--border-color);
}

.input-group input[type="number"] {
  border: none;
  border-radius: 0;
  flex: 1;
  min-width: 0;
}

.input-group input[type="number"]:focus {
  box-shadow: none;
}

/* Toggles & Collapsible Sections */
.toggles {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
}

.collapsible-section {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--card-bg);
  transition: box-shadow 0.2s, border-color 0.2s;
  overflow: hidden;
}

.collapsible-section[open] {
  border-color: var(--stripe-purple-light);
  box-shadow: 0 4px 12px rgba(99, 91, 255, 0.08);
}

.collapsible-section summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  list-style: none; /* Hide default arrow */
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.collapsible-section summary::after {
  content: '→';
  font-size: 1.1rem;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.collapsible-section[open] summary::after {
  transform: rotate(90deg);
  color: var(--stripe-purple);
}

.collapsible-section summary::-webkit-details-marker {
  display: none; /* Hide default Safari arrow */
}

.details-content {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  background: var(--surface-bg);
}

.toggle-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.toggle-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  padding: 12px;
  border-radius: 8px;
  transition: background 0.2s;
}

.toggle-item:hover {
  background: var(--surface-bg);
}

.toggle-main {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  width: 100%;
}

.toggle-desc {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.toggle-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--stripe-purple);
  flex-shrink: 0;
}

.toggle-item label,
.toggle-label-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.toggle-item .info {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.nested-field {
  padding-left: 30px;
  margin-top: 4px;
}

.mini-input {
  max-width: 120px;
  height: 36px;
}

.mini-input input[type="number"] {
  padding: 6px 10px;
  font-size: 0.9rem;
}

.mini-input .suffix {
  padding: 6px 8px;
  font-size: 0.8rem;
}

/* Results */
.results {
  margin-bottom: 32px;
}

.result-section h2 {
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.result-section h3 {
  font-size: 1.125rem;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.result-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.result-card h3 {
  font-size: 1rem;
  text-align: left;
  margin-bottom: 16px;
  color: var(--text-primary);
  font-weight: 600;
}

.result-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
}

.result-card dt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: left;
}

.result-card dd {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 700;
  text-align: right;
}

/* Table */
.result-section table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.result-section table th,
.result-section table td {
  padding: 14px 16px;
  text-align: right;
  font-size: 0.875rem;
}

.result-section table th {
  background: var(--stripe-purple);
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.result-section table th:first-child,
.result-section table td:first-child {
  text-align: left;
}

.result-section table tr:nth-child(even) {
  background: var(--surface-bg);
}

.result-section table td {
  border-top: 1px solid var(--border-color);
  font-weight: 500;
}

.result-section table td:first-child {
  font-weight: 600;
  color: var(--text-secondary);
}

/* Footer */
footer {
  margin-top: 60px;
  padding: 48px 0 32px 0;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand h3 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--stripe-purple);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--stripe-purple);
}

footer p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.copyright {
  margin-top: 12px;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 20px 16px;
  }

  header h1 {
    font-size: 1.75rem;
  }

  header .subtitle {
    font-size: 1rem;
  }

  .calculator {
    padding: 20px;
  }

  .form-inputs {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .toggle-group {
    grid-template-columns: 1fr;
  }

  .sub-fields {
    grid-template-columns: 1fr;
  }

  .result-card {
    padding: 16px;
  }

  .result-section table {
    font-size: 0.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }

  .calculator {
    padding: 16px;
  }
}

/* ── Processor Comparison Styling ── */
.section-desc {
  text-align: center;
  color: var(--text-secondary);
  margin-top: -16px;
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.chart-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 32px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 16px;
}

.chart-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: center;
  gap: 16px;
}

.bar-label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.bar-wrapper {
  background: var(--border-color);
  border-radius: 8px;
  height: 32px;
  width: 100%;
  overflow: hidden;
  position: relative;
}

.bar {
  height: 100%;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 50px;
}

.bar-value {
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.stripe-bar {
  background: linear-gradient(90deg, #635bff, #7a73ff);
}

.paypal-bar {
  background: linear-gradient(90deg, #003087, #0070ba);
}

.payone-bar {
  background: linear-gradient(90deg, #0f2d59, #1c4a8a);
}

.adyen-bar {
  background: linear-gradient(90deg, #0abf53, #13d664);
}

/* Provider Cards Grid */
.providers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.provider-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.provider-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.provider-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.provider-badge.startup {
  background: rgba(99, 91, 255, 0.1);
  color: #635bff;
}

.provider-badge.conversion {
  background: rgba(0, 112, 186, 0.1);
  color: #0070ba;
}

.provider-badge.retail {
  background: rgba(15, 45, 89, 0.1);
  color: #0f2d59;
}

.provider-badge.enterprise {
  background: rgba(10, 191, 83, 0.1);
  color: #0abf53;
}

.provider-header {
  margin-bottom: 16px;
}

.provider-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.tagline {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.fee-summary {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.fee-amount {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  display: block;
}

.fee-percent {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.provider-features {
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  flex-grow: 1;
}

.provider-features li {
  position: relative;
  padding-left: 18px;
}

.provider-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-green);
  font-weight: bold;
}

.net-payout {
  font-size: 0.9rem;
  background: var(--surface-bg);
  padding: 10px;
  border-radius: 8px;
  text-align: center;
  color: var(--text-secondary);
}

.net-payout strong {
  color: var(--text-primary);
}

/* Cheapest Highlight */
.provider-card.cheapest-card {
  border-color: #0abf53;
  box-shadow: 0 4px 16px rgba(10, 191, 83, 0.15);
}

.provider-card.cheapest-card::after {
  content: '🏆 GÜNSTIGSTE';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: #0abf53;
  color: white;
  text-align: center;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 0;
  letter-spacing: 0.05em;
}

.provider-card.cheapest-card .provider-header {
  margin-top: 10px;
}

/* Table styling adjustments */
.table-section {
  margin-top: 24px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.result-section table {
  box-shadow: none;
  border-radius: 0;
}

/* Responsive adjustment for chart */
@media (max-width: 768px) {
  .chart-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .bar-label {
    margin-bottom: 2px;
  }
}