/* Base Styles & Utility Classes */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* Fixed Contrast Input Styles */
.calc-input {
  width: 100%;
  background-color: #f9fafb; /* Light mode bg */
  border: 1px solid #e5e7eb;
  color: #111827; /* Dark text */
  border-radius: 0.5rem;
  padding: 0.75rem;
  outline: none;
  font-weight: 500;
  transition: all 0.2s;
}
.dark .calc-input {
  background-color: #374151; /* Dark mode bg */
  border-color: #4b5563;
  color: #f9fafb; /* Light text */
}
.calc-input:focus {
  border-color: #10b981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

/* Fix for <select> options in dark mode */
select.calc-input option {
  background-color: #ffffff;
  color: #111827;
}
.dark select.calc-input option {
  background-color: #1f2937;
  color: #f9fafb;
}

/* Labels & Buttons */
.input-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: #374151;
}
.dark .input-label {
  color: #d1d5db;
}

.save-btn {
  width: 100%;
  padding: 0.5rem 0;
  background-color: #f3f4f6;
  color: #374151;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: background-color 0.2s;
  margin-top: 0.5rem;
}
.save-btn:hover { background-color: #e5e7eb; }
.dark .save-btn {
  background-color: #374151;
  color: #e5e7eb;
}
.dark .save-btn:hover { background-color: #4b5563; }

.copy-btn {
  color: #9ca3af;
  transition: color 0.2s;
}
.copy-btn:hover { color: #10b981; }

.result-container {
  background-color: #f9fafb;
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid #e5e7eb;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.dark .result-container {
  background-color: rgba(31, 41, 55, 0.5);
  border-color: #374151;
}

/* Tab Styles */
.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}
.active-tab {
  background-color: #10b981;
  color: #ffffff;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.inactive-tab {
  color: #6b7280;
}
.inactive-tab:hover {
  background-color: #f3f4f6;
}
.dark .inactive-tab {
  color: #9ca3af;
}
.dark .inactive-tab:hover {
  background-color: #374151;
}

/* Radio Button Grid styling */
.radio-btn {
  padding: 0.5rem 1rem;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  font-weight: 500;
  color: #374151;
  transition: all 0.2s;
}
.dark .radio-btn {
  border-color: #4b5563;
  color: #d1d5db;
}
.peer:checked + .radio-btn {
  background-color: #10b981;
  color: #ffffff;
  border-color: #10b981;
}

/* Toast Animation */
.toast-show {
  transform: translateY(0) !important;
  opacity: 1 !important;
}

/* BMI Status Colors */
.bmi-under { background-color: #fef08a; color: #854d0e; }
.bmi-normal { background-color: #bbf7d0; color: #166534; }
.bmi-over { background-color: #fed7aa; color: #9a3412; }
.bmi-obese { background-color: #fecaca; color: #991b1b; }
.dark .bmi-under { background-color: rgba(254, 240, 138, 0.2); color: #fde047; border: 1px solid #fde047; }
.dark .bmi-normal { background-color: rgba(187, 247, 208, 0.2); color: #86efac; border: 1px solid #86efac; }
.dark .bmi-over { background-color: rgba(254, 215, 170, 0.2); color: #fdba74; border: 1px solid #fdba74; }
.dark .bmi-obese { background-color: rgba(254, 202, 202, 0.2); color: #fca5a5; border: 1px solid #fca5a5; }

/* --- SECRET EASTER EGG LINK --- */
.secret-link {
  color: #10b981; /* primary */
  text-decoration: none;
  transition: all 0.3s ease;
}
.secret-link:hover {
  color: #059669; /* primaryHover */
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
  cursor: pointer;
}