/* ==============================
   PDV CALCULATOR (UKRAINIAN)
   Reuses .vat-* classes for compatibility with existing style.css
   ============================== */

/* Breadcrumb */
.breadcrumb {
  padding: 12px 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  transition: background var(--transition), border var(--transition);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
}
.breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: 8px;
  color: var(--text-muted);
  font-size: 1.1rem;
}
.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}
.breadcrumb a:hover {
  text-decoration: underline;
}
.breadcrumb [aria-current="page"] {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Hero */
.vat-hero {
  padding: 40px 0 32px;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
}
.vat-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.vat-hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 14px;
}
.vat-hero-badge {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.vat-hero-badge span:first-child {
  color: #16a34a;
  font-weight: 500;
}

/* Calculator section */
.vat-calculator-section {
  padding: 40px 0 24px;
}
.vat-calculator-wrapper {
  max-width: 900px;
  margin: 0 auto;
}
.vat-calculator-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
  letter-spacing: -0.02em;
}
.vat-calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: background var(--transition), border var(--transition);
}
.vat-calculator-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.vat-form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.vat-form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.vat-form-group input,
.vat-form-group select {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: border var(--transition), background var(--transition), color var(--transition);
  width: 100%;
  min-height: 48px;
}
.vat-form-group input:focus,
.vat-form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.vat-form-group input::placeholder {
  color: var(--text-muted);
}

.vat-radio-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 2px;
}
.vat-radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background var(--transition), border var(--transition), color var(--transition);
}
.vat-radio-label:hover {
  background: var(--bg-secondary);
}
.vat-radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
  min-height: auto;
}
.vat-radio-label:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--text);
}

.vat-rate-info {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.vat-rate-info p {
  margin: 2px 0;
}
.vat-rate-info .vat-rate-note {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.vat-rate-info a {
  color: var(--accent);
  text-decoration: none;
}
.vat-rate-info a:hover {
  text-decoration: underline;
}

.vat-form-actions {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}
.vat-btn {
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s, box-shadow 0.2s;
  min-height: 48px;
  font-family: inherit;
}
.vat-btn:hover {
  transform: translateY(-1px);
}
.vat-btn.primary {
  background: var(--accent);
  color: #fff;
  flex: 1;
}
.vat-btn.primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.vat-btn.secondary {
  background: var(--bg-secondary);
  color: var(--text);
  border: 1px solid var(--border);
  flex: 0.5;
}
.vat-btn.secondary:hover {
  background: var(--border);
}

/* Results */
.vat-results {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 24px;
  transition: background var(--transition);
}
.vat-results h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}
.vat-result-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.vat-result-item:last-of-type {
  border-bottom: none;
}
.vat-result-item.total-result {
  padding: 12px 0;
  border-bottom: 2px solid var(--accent);
  margin-bottom: 4px;
}
.vat-result-item.total-result .vat-result-label {
  font-weight: 700;
  font-size: 1.1rem;
}
.vat-result-item.total-result .vat-result-value {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent);
}
.vat-result-label {
  color: var(--text-secondary);
}
.vat-result-value {
  font-weight: 600;
  color: var(--text);
}
.vat-result-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.copy-btn {
  padding: 10px 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text);
  transition: background var(--transition), border var(--transition);
  font-family: inherit;
  min-height: 40px;
}
.copy-btn:hover {
  background: var(--border);
}
.vat-copy-feedback {
  font-size: 0.9rem;
  color: #16a34a;
  opacity: 0;
  transition: opacity 0.3s;
}
.vat-copy-feedback.show {
  opacity: 1;
}

.vat-disclaimer {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border-left: 3px solid #f59e0b;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.vat-disclaimer strong {
  color: var(--text);
}

/* Formula section */
.vat-formula-section {
  padding: 40px 0 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.vat-formula-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}
.vat-formula-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 850px;
  margin: 0 auto;
}
.vat-formula-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
}
.vat-formula-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.vat-formula-box {
  background: var(--bg-secondary);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  overflow-x: auto;
}
.vat-formula-box p {
  margin: 4px 0;
  color: var(--text-secondary);
}
.vat-formula-example {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.vat-formula-example p {
  margin: 2px 0;
}
.vat-formula-example strong {
  color: var(--text);
}

/* Examples */
.vat-examples-section {
  padding: 40px 0;
}
.vat-examples-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}
.vat-examples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.vat-example-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.vat-example-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.vat-example-table {
  width: 100%;
  font-size: 0.9rem;
  border-collapse: collapse;
}
.vat-example-table tr {
  border-bottom: 1px solid var(--border);
}
.vat-example-table tr:last-child {
  border-bottom: none;
}
.vat-example-table td {
  padding: 6px 4px;
  color: var(--text-secondary);
}
.vat-example-table td:last-child {
  text-align: right;
  font-weight: 500;
  color: var(--text);
}
.vat-example-table .vat-example-total td {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  padding-top: 8px;
  border-top: 2px solid var(--border);
}

/* Rates */
.vat-rates-section {
  padding: 40px 0 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.vat-rates-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}
.vat-rates-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.vat-rate-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
}
.vat-rate-badge {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.vat-rate-badge.standard { background: #2563eb; }
.vat-rate-badge.reduced { background: #7c3aed; }
.vat-rate-badge.zero { background: #16a34a; }
.vat-rate-badge.exempt { background: #6b7280; }
.vat-rate-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.vat-rate-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.vat-rates-note {
  max-width: 750px;
  margin: 24px auto 0;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
}
.vat-rates-note a {
  color: var(--accent);
  text-decoration: none;
}
.vat-rates-note a:hover {
  text-decoration: underline;
}

/* SEO Content */
.vat-seo-content {
  padding: 40px 0 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.vat-seo-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.vat-seo-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 28px 0 12px;
}
.vat-seo-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.vat-seo-content ul,
.vat-seo-content ol {
  margin: 12px 0 20px 24px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.vat-seo-content ul li,
.vat-seo-content ol li {
  margin-bottom: 6px;
}
.vat-seo-content strong {
  color: var(--text);
}
.vat-seo-content code {
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.92em;
  color: var(--text);
}
.vat-internal-links {
  margin-top: 28px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 1.05rem;
}
.vat-internal-links p {
  margin-bottom: 8px;
}
.vat-internal-links p:last-child {
  margin-bottom: 0;
}
.vat-internal-links a {
  color: var(--accent);
  font-weight: 600;
}
.vat-internal-links a:hover {
  text-decoration: underline;
}

/* FAQ */
.vat-faq {
  padding: 40px 0 48px;
}
.vat-faq h2 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

/* ==============================
   RESPONSIVE
   ============================== */

@media (max-width: 900px) {
  .vat-rates-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 820px) {
  .vat-calculator-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px;
  }
  .vat-formula-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .vat-examples-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

@media (max-width: 700px) {
  .vat-hero h1 { font-size: 2rem; }
  .vat-hero-subtitle { font-size: 1rem; }
  .vat-hero-badge { font-size: 0.8rem; gap: 4px; }
  .vat-calculator-title { font-size: 1.4rem; }
  .vat-calculator-grid { padding: 18px 16px; border-radius: var(--radius); }
  .vat-form-actions { flex-direction: column; }
  .vat-btn.secondary { flex: 1; }
  .vat-radio-group { flex-direction: column; gap: 8px; }
  .vat-radio-label { padding: 10px 14px; }
  .vat-results { padding: 18px 16px; }
  .vat-examples-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .vat-formula-card { padding: 18px 16px; }
  .vat-formula-box { padding: 12px 14px; font-size: 0.85rem; }
  .vat-seo-content h2 { font-size: 1.4rem; }
  .vat-seo-content p,
  .vat-seo-content ul,
  .vat-seo-content ol { font-size: 0.98rem; }
  .vat-faq h2 { font-size: 1.4rem; }
  .vat-result-actions { flex-direction: column; align-items: stretch; }
  .copy-btn { width: 100%; justify-content: center; }
  .vat-copy-feedback { text-align: center; }
  .breadcrumb { padding: 8px 0; font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .vat-hero { padding: 32px 0 24px; }
  .vat-hero h1 { font-size: 1.7rem; }
  .vat-calculator-grid { padding: 14px 12px; border-radius: var(--radius); }
  .vat-form-group input,
  .vat-form-group select { padding: 10px 12px; font-size: 16px !important; min-height: 44px; }
  .vat-btn { padding: 10px 20px; font-size: 0.95rem; min-height: 44px; }
  .vat-results h3 { font-size: 1rem; }
  .vat-result-item { font-size: 0.85rem; padding: 6px 0; }
  .vat-result-item.total-result .vat-result-value { font-size: 1.1rem; }
  .vat-formula-section h2,
  .vat-examples-section h2,
  .vat-rates-section h2,
  .vat-seo-content h2,
  .vat-faq h2 { font-size: 1.4rem; }
  .vat-example-card { padding: 16px; }
  .vat-example-table { font-size: 0.8rem; }
  .vat-disclaimer { padding: 12px 14px; font-size: 0.8rem; }
  .vat-internal-links { padding: 14px 16px; font-size: 0.95rem; }
  .vat-rates-grid { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }
  .vat-rate-info { padding: 10px 12px; font-size: 0.8rem; }
  .breadcrumb ol { gap: 4px 8px; font-size: 0.75rem; }
}

/* Dark mode tweaks */
[data-theme="dark"] .vat-radio-label:has(input:checked) { background: #1a2740; }
[data-theme="dark"] .vat-result-item.total-result { border-bottom-color: #3b82f6; }
[data-theme="dark"] .vat-result-item.total-result .vat-result-value { color: #3b82f6; }
[data-theme="dark"] .vat-disclaimer { border-left-color: #d97706; }
[data-theme="dark"] .vat-rate-badge.standard { background: #3b82f6; }
[data-theme="dark"] .vat-rate-badge.reduced { background: #8b5cf6; }
[data-theme="dark"] .vat-rate-badge.zero { background: #22c55e; }
[data-theme="dark"] .vat-rate-badge.exempt { background: #6b7280; }