:root {
  --bg-color: #0f172a;
  --text-color: #f1f5f9;
  --card-bg: rgba(30, 41, 59, 0.5);
  --accent-color: #6366f1;
  --accent-hover: #4f46e5;
  --border-color: rgba(255, 255, 255, 0.1);
  --input-bg: rgba(15, 23, 42, 0.6);
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(to right, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

/* Cards */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Form */
.form-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: center;
}

input, select {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: white;
  font-size: 1rem;
  transition: border-color 0.2s;
}

input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

button {
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  border: none;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.btn-remove {
  padding: 0.5rem;
  background: transparent;
  color: #ef4444;
  font-size: 1.25rem;
}

/* Results Grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

canvas {
  width: 100% !important;
  height: auto !important;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th {
  text-align: left;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  color: #94a3b8;
  font-weight: 500;
}

td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

tr:last-child td {
  border-bottom: none;
}