* {
  box-sizing: border-box;
  font-family: 'Inter', system-ui, Arial, sans-serif;
}

body {
  margin: 0;
  background: #f4f6fb;
  color: #1f2937;
}

a {
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

/* ====== HEADER ====== */
.header {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: #fff;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 20px;
}

/* ====== BUTTON ====== */
.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  transition: 0.2s;
}

.btn-primary {
  background: #4f46e5;
  color: #fff;
}

.btn-primary:hover {
  background: #4338ca;
}

.btn-danger {
  background: #ef4444;
  color: #fff;
}

/* ====== CARD ====== */
.card {
  background: #fff;
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

/* ====== FORM ====== */
input {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  margin-bottom: 12px;
}

input:focus {
  outline: none;
  border-color: #4f46e5;
}

/* ====== GRID ====== */
.grid {
  display: grid;
  gap: 16px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* ====== BADGE ====== */
.badge {
  display: inline-block;
  background: #e0e7ff;
  color: #3730a3;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}