/* Expert NDS Calculator - Modern, Bright, Adaptive Design */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
  --enc-radius: 20px;
  --enc-radius-sm: 12px;
  --enc-radius-sm2: 8px;
  --enc-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --enc-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.enc-wrapper {
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 2rem);
  color: var(--enc-text);
  background: linear-gradient(160deg, var(--enc-bg, #0c0a1d) 0%, var(--enc-bg-card, #16132a) 40%, var(--enc-bg, #0f0d1f) 100%);
  border-radius: var(--enc-radius);
  box-shadow: var(--enc-shadow), var(--enc-shadow-glow);
  border: 1px solid var(--enc-border, rgba(99, 102, 241, 0.2));
}

.enc-header {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

.enc-header-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--enc-primary), var(--enc-accent));
  border-radius: 14px;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: white;
  margin-bottom: 1rem;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.enc-header h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  background: linear-gradient(90deg, var(--enc-primary-light), var(--enc-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 0.5rem;
}

.enc-header p {
  color: var(--enc-text-muted);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.5;
}

/* Tabs */
.enc-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.enc-tab {
  padding: 0.65rem 1.25rem;
  border: 1px solid var(--enc-border);
  border-radius: var(--enc-radius-sm2);
  background: var(--enc-bg-input);
  color: var(--enc-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--enc-transition);
}

.enc-tab:hover {
  background: var(--enc-border);
  color: var(--enc-text);
  border-color: var(--enc-primary);
}

.enc-tab.active {
  background: linear-gradient(135deg, var(--enc-primary), var(--enc-primary-dark));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

/* Panels */
.enc-panel {
  display: none;
}

.enc-panel.active {
  display: block;
  animation: enc-fadeIn 0.3s ease;
}

@keyframes enc-fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.enc-card {
  background: var(--enc-bg-card);
  border-radius: var(--enc-radius);
  padding: 1.5rem;
  border: 1px solid var(--enc-border);
  transition: var(--enc-transition);
}

.enc-card:hover {
  background: var(--enc-bg-card-hover);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.2);
}

.enc-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--enc-text);
  margin: 0 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.enc-card-title::before {
  content: '';
  width: 4px;
  height: 1.2em;
  background: linear-gradient(180deg, var(--enc-primary), var(--enc-accent));
  border-radius: 2px;
}

.enc-card-title.enc-card-sales::before {
  background: var(--enc-sales);
}

.enc-card-title.enc-card-purchases::before {
  background: var(--enc-purchases);
}

.enc-card-desc {
  font-size: 0.85rem;
  color: var(--enc-text-muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

/* Rate buttons */
.enc-rate-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.enc-rate-buttons-sm {
  margin-bottom: 0;
}

.enc-rate-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--enc-border);
  border-radius: var(--enc-radius-sm2);
  background: var(--enc-bg-input);
  color: var(--enc-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--enc-transition);
}

.enc-rate-btn:hover {
  border-color: var(--enc-primary);
  color: var(--enc-primary-light);
}

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

.enc-rate-btn.enc-rate-calc {
  font-size: 0.8rem;
  padding: 0.45rem 0.85rem;
}

/* Form */
.enc-form-grid {
  display: grid;
  gap: 1rem;
}

.enc-form-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 640px) {
  .enc-form-grid-3 {
    grid-template-columns: 1fr;
  }
}

.enc-form-group {
  margin-bottom: 1rem;
}

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

.enc-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--enc-text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.enc-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  background: var(--enc-bg-input);
  border: 2px solid var(--enc-border);
  border-radius: var(--enc-radius-sm2);
  color: var(--enc-text);
  transition: var(--enc-transition);
  box-sizing: border-box;
}

.enc-input:focus {
  outline: none;
  border-color: var(--enc-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.enc-input::placeholder {
  color: var(--enc-text-muted);
  opacity: 0.6;
}

/* Radio */
.enc-radio-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.enc-radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--enc-text-muted);
}

.enc-radio-label input {
  accent-color: var(--enc-primary);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.enc-radio-label input:checked + span {
  color: var(--enc-text);
  font-weight: 600;
}

/* Results block */
.enc-results-inline {
  margin-top: 1.25rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--enc-radius-sm2);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.enc-results-inline .enc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.enc-results-inline .enc-result-row:last-child {
  border-bottom: none;
}

.enc-results-inline .enc-result-label {
  font-size: 0.9rem;
  color: var(--enc-text-muted);
}

.enc-results-inline .enc-result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--enc-accent-light);
}

.enc-card-result {
  margin-top: 1.5rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(16, 185, 129, 0.1) 100%);
  border-color: rgba(99, 102, 241, 0.3);
}

.enc-card-result .enc-result-main {
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  color: var(--enc-accent-light);
  margin: 0.5rem 0;
}

.enc-card-result .enc-result-main.negative {
  color: var(--enc-danger);
}

.enc-card-result .enc-result-main-label {
  font-size: 0.9rem;
  color: var(--enc-text-muted);
  text-align: center;
  margin-bottom: 0.5rem;
}

.enc-card-result .enc-result-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--enc-border);
}

@media (max-width: 480px) {
  .enc-card-result .enc-result-details {
    grid-template-columns: 1fr;
  }
}

.enc-card-result .enc-result-detail {
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--enc-radius-sm2);
  text-align: center;
}

.enc-card-result .enc-result-detail-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--enc-accent-light);
}

.enc-card-result .enc-result-detail-label {
  font-size: 0.75rem;
  color: var(--enc-text-muted);
  margin-top: 0.25rem;
}

/* Words block */
.enc-words-block {
  margin-top: 1.25rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--enc-radius-sm2);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--enc-text-muted);
  line-height: 1.5;
  min-height: 2.5rem;
}

.enc-words-block:empty {
  display: none;
}

.enc-words-block:not(:empty)::before {
  content: attr(data-label);
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--enc-primary-light);
  margin-bottom: 0.5rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Grid */
.enc-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .enc-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Responsive */
@media (max-width: 480px) {
  .enc-wrapper {
    padding: 1rem;
  }

  .enc-tabs {
    flex-direction: column;
  }

  .enc-tab {
    width: 100%;
    justify-content: center;
  }

  .enc-rate-buttons {
    justify-content: center;
  }

  .enc-rate-btn {
    flex: 1;
    min-width: 60px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .enc-wrapper *,
  .enc-tab,
  .enc-rate-btn,
  .enc-input {
    transition: none;
  }

  .enc-panel.active {
    animation: none;
  }
}

/* Content blocks controlled from settings */
.enc-intro {
  max-width: 900px;
  margin: 0 auto 1.25rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--enc-text, #333);
}

.enc-intro p { margin: 0 0 0.5rem; }
.enc-intro p:last-child { margin-bottom: 0; }

.enc-disclaimer-inline {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--enc-text-muted, #94a3b8);
}

.enc-disclaimer-inline p { margin: 0 0 0.35rem; }
.enc-disclaimer-inline p:last-child { margin-bottom: 0; }

.enc-plain {
  max-width: 900px;
  margin: 2rem auto 0;
  padding: 0 20px;
}

.enc-plain .enc-disclaimer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--enc-border, #e0e0e0);
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--enc-text-muted, #50575e);
}

.enc-plain .enc-disclaimer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--enc-text, #333);
  margin: 0 0 1rem;
}

.enc-plain .enc-disclaimer-text {
  margin: 0;
  font-size: 1rem;
  font-weight: normal;
  color: var(--enc-text, #333);
  line-height: 1.5;
}

.enc-plain .enc-faq { margin-top: 1rem; }

.enc-plain .enc-faq-item {
  margin-bottom: 0.5rem;
  border: 1px solid var(--enc-border, #e0e0e0);
  border-radius: 6px;
  overflow: hidden;
}

.enc-plain .enc-faq-ask {
  width: 100%;
  display: block;
  padding: 0.5rem 0.75rem 0.5rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--enc-text, #333);
  text-align: left;
  background: var(--enc-bg-input, rgba(0, 0, 0, 0.04));
  border: none;
  cursor: pointer;
  position: relative;
}

.enc-plain .enc-faq-ask:hover { background: var(--enc-bg-card-hover, rgba(0, 0, 0, 0.07)); }

.enc-plain .enc-faq-ask::before {
  content: '▶';
  position: absolute;
  left: 0.6rem;
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.enc-plain .enc-faq-item.enc-faq-item--expanded .enc-faq-ask::before {
  transform: rotate(90deg);
}

.enc-plain .enc-faq-answer-wrap {
  display: none;
  padding: 0.75rem 1rem;
  background: var(--enc-bg-card, #fff);
  border-top: 1px solid var(--enc-border, #e0e0e0);
}

.enc-plain .enc-faq-item.enc-faq-item--expanded .enc-faq-answer-wrap {
  display: block;
}

.enc-plain .enc-faq-answer-text {
  margin: 0;
  font-size: 1rem;
  font-weight: normal;
  color: var(--enc-text, #333);
  line-height: 1.5;
}