/* Body Mass Index Calculator - Bright Modern Responsive Styles */
.bmi-wrap *,
.bmi-wrap *::before,
.bmi-wrap *::after {
  box-sizing: border-box;
}

.bmi-wrap {
  --bmi-bg: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 100%);
  --bmi-surface: rgba(255, 255, 255, 0.95);
  --bmi-surface-card: rgba(255, 255, 255, 0.98);
  --bmi-border: rgba(102, 126, 234, 0.25);
  --bmi-text: #1a1a2e;
  --bmi-text-muted: #64748b;
  --bmi-accent: #667eea;
  --bmi-accent-secondary: #f5576c;
  --bmi-accent-soft: rgba(102, 126, 234, 0.2);
  --bmi-success: #10b981;
  --bmi-warning: #f59e0b;
  --bmi-danger: #ef4444;
  --bmi-shadow: 0 10px 40px rgba(102, 126, 234, 0.2);
  --bmi-radius: 20px;
  --bmi-radius-sm: 14px;
  --bmi-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--bmi-text);
  padding: 1.5rem 0;
  margin: 2rem 0;
  min-height: 100%;
  background: var(--bmi-bg);
  border-radius: var(--bmi-radius);
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 100%;
}

.bmi-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 20% 20%, rgba(255,255,255,0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(245,87,108,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.bmi-container {
  max-width: 100%;
  width: 100%;
  margin: 0 auto;
  padding: 0 0.75rem;
  position: relative;
  z-index: 1;
}

@media (min-width: 480px) {
  .bmi-container {
    padding: 0 1rem;
    max-width: 100%;
  }
}

@media (min-width: 768px) {
  .bmi-container {
    padding: 0 1.5rem;
    max-width: 100%;
  }
}

@media (min-width: 1024px) {
  .bmi-container {
    padding: 0 2rem;
    max-width: 100%;
  }
}

.bmi-header {
  text-align: center;
  margin-bottom: 2rem;
}

.bmi-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.9) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 0.5rem;
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.bmi-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.bmi-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: 0.35rem;
  border-radius: var(--bmi-radius-sm);
  border: 1px solid rgba(255,255,255,0.3);
}

.bmi-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  min-height: 44px;
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  background: transparent;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--bmi-transition);
}

.bmi-tab:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.bmi-tab--active {
  background: #fff;
  color: var(--bmi-accent);
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.bmi-panel {
  display: none;
  animation: bmi-fadeIn 0.3s ease;
}

.bmi-panel--active {
  display: block !important;
}

@keyframes bmi-fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

.bmi-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.bmi-card {
  background: var(--bmi-surface-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(102, 126, 234, 0.15);
  border-radius: var(--bmi-radius);
  padding: 1.5rem;
  box-shadow: var(--bmi-shadow);
  overflow: hidden;
  min-width: 0;
}

.bmi-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
  color: var(--bmi-text);
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--bmi-accent-soft);
}

.bmi-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (min-width: 480px) {
  .bmi-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .bmi-row {
    gap: 1.25rem;
  }
}

.bmi-field {
  margin-bottom: 1rem;
}

.bmi-row .bmi-field {
  margin-bottom: 0;
}

.bmi-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bmi-text-muted);
  margin-bottom: 0.4rem;
}

.bmi-input,
.bmi-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  color: var(--bmi-text);
  background: #fff;
  border: 2px solid #e2e8f0;
  border-radius: var(--bmi-radius-sm);
  transition: all var(--bmi-transition);
  -webkit-tap-highlight-color: transparent;
}

.bmi-input::placeholder {
  color: #94a3b8;
}

.bmi-input:focus,
.bmi-select:focus {
  outline: none;
  border-color: var(--bmi-accent);
  box-shadow: 0 0 0 4px var(--bmi-accent-soft);
}

.bmi-input:hover,
.bmi-select:hover {
  border-color: #cbd5e1;
}

.bmi-input[type="number"] {
  -moz-appearance: textfield;
}

.bmi-input[type="number"]::-webkit-inner-spin-button,
.bmi-input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}

.bmi-select {
  cursor: pointer;
}

.bmi-radio-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.5rem 0;
}

.bmi-radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--bmi-text-muted);
}

.bmi-radio:hover {
  color: var(--bmi-text);
}

.bmi-radio input {
  accent-color: var(--bmi-accent);
  width: 1.2em;
  height: 1.2em;
  cursor: pointer;
}

.bmi-hint {
  font-size: 0.875rem;
  color: var(--bmi-text-muted);
  margin: 0.75rem 0 0;
  line-height: 1.5;
}

.bmi-btn {
  width: 100%;
  padding: 1rem 1.5rem;
  min-height: 48px;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  border-radius: var(--bmi-radius-sm);
  cursor: pointer;
  transition: all var(--bmi-transition);
  margin-top: 1rem;
}

.bmi-btn--primary {
  background: linear-gradient(135deg, var(--bmi-accent) 0%, #764ba2 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
  -webkit-tap-highlight-color: transparent;
}

.bmi-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.bmi-btn--primary:active {
  transform: translateY(0);
}

/* Results */
.bmi-results-placeholder {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--bmi-text-muted);
}

.bmi-placeholder-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.bmi-results-placeholder p {
  margin: 0;
  font-size: 0.95rem;
}

.bmi-bmi-block {
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
  border-radius: var(--bmi-radius-sm);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.bmi-bmi-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bmi-accent);
  line-height: 1.2;
}

.bmi-bmi-label {
  font-size: 0.875rem;
  color: var(--bmi-text-muted);
  margin-bottom: 0.75rem;
}

.bmi-scale-wrap {
  margin-top: 0.75rem;
}

.bmi-scale {
  height: 12px;
  background: linear-gradient(90deg, #6366f1 0%, #10b981 35%, #f59e0b 65%, #ef4444 100%);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.bmi-scale-bar {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 20px;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  transition: left var(--bmi-transition);
}

.bmi-scale-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-size: 0.7rem;
  color: var(--bmi-text-muted);
}

.bmi-category {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 0.5rem;
  padding: 0.5rem;
  border-radius: 8px;
  text-align: center;
}

.bmi-category--deficit { background: rgba(99, 102, 241, 0.15); color: #6366f1; }
.bmi-category--normal { background: rgba(16, 185, 129, 0.15); color: #059669; }
.bmi-category--overweight { background: rgba(245, 158, 11, 0.15); color: #d97706; }
.bmi-category--obesity { background: rgba(239, 68, 68, 0.15); color: #dc2626; }

.bmi-summary {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

.bmi-summary-item {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: #f8fafc;
  border-radius: var(--bmi-radius-sm);
  border-left: 4px solid transparent;
}

.bmi-summary-item--extended {
  border-left-color: var(--bmi-accent-secondary);
}

.bmi-summary-label {
  font-size: 0.8125rem;
  color: var(--bmi-text-muted);
  flex: 1 1 auto;
  min-width: 0;
}

.bmi-summary-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bmi-accent);
  flex-shrink: 0;
}

@media (min-width: 480px) {
  .bmi-summary-label {
    font-size: 0.875rem;
  }

  .bmi-summary-value {
    font-size: 1.05rem;
  }
}

.bmi-summary-value--highlight {
  font-size: 1.2rem;
  color: var(--bmi-accent-secondary);
}

.bmi-block-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--bmi-text);
}

.bmi-calories-block {
  margin-bottom: 1.5rem;
}

.bmi-calories-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 480px) {
  .bmi-calories-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .bmi-calories-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

.bmi-calorie-card {
  padding: 1rem;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-radius: var(--bmi-radius-sm);
  text-align: center;
  border: 1px solid rgba(102, 126, 234, 0.15);
}

.bmi-calorie-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bmi-text-muted);
  margin-bottom: 0.4rem;
}

.bmi-calorie-value {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--bmi-accent);
}

.bmi-recommendations {
  padding: 1rem;
  background: #fffbeb;
  border-radius: var(--bmi-radius-sm);
  border-left: 4px solid var(--bmi-warning);
  font-size: 0.9rem;
  line-height: 1.6;
  color: #92400e;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.bmi-recommendations:empty {
  display: none;
}

/* Plain blocks: disclaimer, instructions, FAQ */
.lc-plain {
  max-width: 100%;
  width: 100%;
  margin: 2rem auto 0;
  padding: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: #374151;
}

@media (min-width: 480px) {
  .lc-plain {
    padding: 0;
    max-width: 100%;
    font-size: 0.875rem;
  }
}

@media (min-width: 768px) {
  .lc-plain {
    padding: 0;
    max-width: 100%;
  }
}

@media (min-width: 1024px) {
  .lc-plain {
    padding: 0;
    max-width: 100%;
  }
}

.lc-plain .lc-disclaimer {
  margin-top: 1.25rem;
  padding-top: 0;
  border-top: 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: #50575e;
}

.lc-plain .lc-disclaimer-title {
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  margin: 0 0 1rem;
}

.lc-plain .lc-disclaimer-notice {
  margin: 0 0 1rem;
}

.lc-plain .lc-disclaimer-text {
  margin: 0;
  font-size: 1rem;
  font-weight: normal;
  color: #333;
  line-height: 1.5;
}

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

.lc-plain .lc-faq-item {
  margin-bottom: 0.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
  background: #f9fafb;
}

.lc-plain .lc-faq-ask {
  width: 100%;
  display: block;
  padding: 0.75rem 1rem 0.75rem 2.25rem;
  min-height: 44px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #1f2937;
  text-align: left;
  background: #f3f4f6;
  border: none;
  cursor: pointer;
  position: relative;
  transition: background 0.2s ease;
  box-sizing: border-box;
}

.lc-plain .lc-faq-ask:hover {
  background: #e5e7eb;
}

.lc-plain .lc-faq-ask::before {
  content: '▶';
  position: absolute;
  left: 0.75rem;
  font-size: 0.65rem;
  color: #6b7280;
  transition: transform 0.2s ease;
}

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

.lc-plain .lc-faq-answer-wrap {
  display: none;
  padding: 0.75rem 1rem;
  background: #fff;
  border-top: 1px solid #e5e7eb;
}

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

.lc-plain .lc-faq-answer-text {
  margin: 0;
  font-size: 0.9rem;
  font-weight: normal;
  color: #4b5563;
  line-height: 1.5;
}


/* Mobile (< 480px) */
@media (max-width: 479px) {
  .bmi-wrap {
    padding: 1rem 0;
    border-radius: 12px;
  }

  .bmi-card {
    padding: 1rem;
    border-radius: 14px;
  }

  .bmi-card__title {
    font-size: 1rem;
  }

  .bmi-title {
    font-size: 1.5rem;
  }

  .bmi-subtitle {
    font-size: 0.9rem;
  }

  .bmi-tabs {
    flex-direction: column;
    padding: 0.25rem;
  }

  .bmi-tab {
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  .bmi-input,
  .bmi-select {
    padding: 0.75rem 0.9rem;
    font-size: 1rem;
  }

  .bmi-btn {
    padding: 0.9rem 1.25rem;
    font-size: 1rem;
  }

  .bmi-bmi-block {
    padding: 1rem;
  }

  .bmi-bmi-value {
    font-size: 2rem;
  }

  .bmi-summary-value {
    font-size: 0.95rem;
  }

  .bmi-summary-value--highlight {
    font-size: 1.05rem;
  }

  .bmi-scale-labels {
    font-size: 0.65rem;
  }

  .bmi-results-placeholder {
    padding: 2rem 1.5rem;
  }

  .bmi-placeholder-icon {
    font-size: 2.5rem;
  }

  .lc-plain .lc-disclaimer-text {
    font-size: 0.9rem;
  }

  .lc-plain .lc-faq-ask {
    font-size: 0.9rem;
    padding: 0.6rem 0.75rem 0.6rem 2rem;
  }

  .lc-plain .lc-faq-answer-text {
    font-size: 0.85rem;
  }

  .lc-plain {
    margin-top: 1.5rem;
  }

  .lc-plain .lc-disclaimer {
    margin-top: 1rem;
    padding-top: 0;
  }
}

/* Tablet (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
  .bmi-wrap {
    padding: 1.25rem 0;
  }

  .bmi-card {
    padding: 1.25rem;
  }

  .bmi-bmi-value {
    font-size: 2.25rem;
  }
}

/* Desktop (768px+) */
@media (min-width: 768px) {
  .bmi-bmi-value {
    font-size: 2.5rem;
  }

  .bmi-summary-value--highlight {
    font-size: 1.2rem;
  }
}

/* Small mobile - overflow protection */
@media (max-width: 359px) {
  .bmi-container {
    padding: 0 0.5rem;
  }

  .lc-plain {
    padding: 0;
  }

  .bmi-card {
    padding: 0.75rem;
  }

  .bmi-calorie-card {
    padding: 0.75rem;
  }
}