/* ================================
   Base Styles
================================ */

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  user-select: none;
}

/* ================================
   Remove Number Input Spinners
================================ */

/* Chrome, Safari, Edge */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type="number"] {
  -moz-appearance: textfield;
}

/* ================================
   Range Slider (Custom, Clean)
================================ */

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: #e5e7eb;
  border-radius: 2px;
  cursor: pointer;
}

.dark input[type="range"] {
  background: #374151;
}

/* Slider Thumb */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: #4f46e5;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

input[type="range"]::-moz-range-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: #4f46e5;
  cursor: pointer;
  border: none;
}

/* ================================
   Pie Chart (Single System)
================================ */

.pie {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: conic-gradient(#4f46e5 var(--p), #e5e7eb 0);
  transition: background 0.4s ease;
}

.dark .pie {
  background: conic-gradient(#6366f1 var(--p), #374151 0);
}

/* Responsive Pie */
@media (max-width: 360px) {
  .pie {
    width: 120px;
    height: 120px;
  }
}

/* ================================
   Subtle Page Animation
================================ */

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}