/* Scoped Variables */
.tc-wrapper {
  /* Palette */
  --tc-primary: #3b82f6;
  --tc-primary-hover: #2563eb;
  --tc-bg-page: #f8fafc;
  --tc-bg-card: #ffffff;
  --tc-text-main: #0f172a;
  --tc-text-muted: #64748b;
  --tc-border: #e2e8f0;
  --tc-danger: #ef4444;
  --tc-success: #10b981;
  
  /* Spacing & Radius */
  --tc-radius-lg: 12px;
  --tc-radius-md: 6px;
  
  /* Shadows */
  --tc-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --tc-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --tc-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--tc-text-main);
  box-sizing: border-box;
  max-width: 100%;
}

.tc-wrapper * {
  box-sizing: border-box;
}

.tc-container {
  width: 100%;
  max-width: 800px;
  background: var(--tc-bg-card);
  border-radius: var(--tc-radius-lg);
  box-shadow: var(--tc-shadow-lg);
  border: 1px solid var(--tc-border);
  overflow: hidden;
  margin: 0 auto; /* Center it */
}

/* Header */
.tc-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--tc-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fff;
}

.tc-header-content h3 { /* Changed h1 to h3 for SEO/semantics inside a page */
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--tc-text-main);
}

.tc-header-content p {
  margin: 2px 0 0;
  font-size: 0.8rem;
  color: var(--tc-text-muted);
}

.tc-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: #f1f5f9;
  color: var(--tc-text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.tc-status-badge.active {
  background: #ecfdf5;
  color: var(--tc-success);
}

.tc-status-dot {
  width: 6px;
  height: 6px;
  background-color: currentColor;
  border-radius: 50%;
}

/* Main Content */
.tc-grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 700px) {
  .tc-grid-layout { grid-template-columns: 1fr; }
}

/* Left Column: Inputs */
.tc-input-section {
  padding: 24px;
  border-right: 1px solid var(--tc-border);
}

@media (max-width: 700px) {
  .tc-input-section { border-right: none; border-bottom: 1px solid var(--tc-border); }
}

.tc-input-group {
  margin-bottom: 16px;
}

.tc-input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--tc-text-main);
}

.tc-input-group .helper {
  font-size: 0.75rem;
  color: var(--tc-text-muted);
  margin-bottom: 6px;
  display: block;
}

.tc-input-wrapper {
  position: relative;
}

.tc-input-wrapper input {
  width: 100%;
  padding: 10px 14px;
  padding-right: 36px;
  font-size: 0.95rem;
  border: 1px solid var(--tc-border);
  border-radius: var(--tc-radius-md);
  transition: all 0.2s;
  font-family: inherit;
  color: var(--tc-text-main);
  background: #fff;
}

.tc-input-wrapper input:focus {
  outline: none;
  border-color: var(--tc-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.tc-input-unit {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--tc-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  pointer-events: none;
}

/* Right Column: Results */
.tc-results-section {
  background: var(--tc-bg-page);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tc-section-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tc-text-muted);
  margin: 0 0 6px 0;
}

.tc-result-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.tc-stat-card {
  background: #fff;
  padding: 14px;
  border-radius: var(--tc-radius-md);
  box-shadow: var(--tc-shadow-sm);
  border: 1px solid var(--tc-border);
  display: flex;
  flex-direction: column;
}

.tc-stat-card.highlight {
  border-color: #bfdbfe;
  background: #eff6ff;
}

.tc-stat-label {
  font-size: 0.7rem;
  color: var(--tc-text-muted);
  margin-bottom: 4px;
  font-weight: 600;
}

.tc-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--tc-text-main);
}

.tc-stat-unit {
  font-size: 0.8rem;
  color: var(--tc-text-muted);
  font-weight: 500;
  margin-left: 2px;
}

/* Total Weight Large Display */
.tc-total-display {
  margin-top: auto;
  background: var(--tc-text-main);
  color: #fff;
  padding: 16px;
  border-radius: var(--tc-radius-md);
  text-align: center;
  box-shadow: var(--tc-shadow-md);
}

.tc-total-display .label {
  font-size: 0.8rem;
  opacity: 0.9;
  margin-bottom: 4px;
  display: block;
}

.tc-total-display .value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Footer */
.tc-footer {
  border-top: 1px solid var(--tc-border);
  padding: 12px 24px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.tc-status-text {
  font-size: 0.8rem;
  color: var(--tc-text-muted);
  text-align: center;
  margin: 0;
}