:root {
  --radius: 1rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

.glass-effect {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.app-shell {
  max-width: 72rem;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.form-panel {
  border-radius: 1.25rem;
  border: 1px solid rgb(226 232 240);
  background: white;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.text-input,
.text-output,
.input-field,
.select-field {
  width: 100%;
  border: 1px solid rgb(203 213 225);
  border-radius: 1rem;
  padding: 0.95rem 1rem;
  font: inherit;
  color: rgb(15 23 42);
  background: white;
  outline: none;
}

.text-input,
.text-output {
  min-height: 280px;
  resize: vertical;
}

.input-field:focus,
.select-field:focus,
.text-input:focus,
.text-output:focus {
  border-color: rgb(99 102 241);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.button-primary,
.button-secondary {
  border: none;
  border-radius: 1rem;
  padding: 0.95rem 1.15rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.button-primary:hover,
.button-secondary:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: rgb(79 70 229);
  color: white;
  box-shadow: 0 10px 24px rgba(79, 70, 229, 0.18);
}

.button-primary:hover {
  background: rgb(67 56 202);
}

.button-secondary {
  background: rgb(241 245 249);
  color: rgb(15 23 42);
}

.metrics-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.metric-card {
  border-radius: 1rem;
  border: 1px solid rgb(226 232 240);
  background: rgb(248 250 252);
  padding: 1rem;
}

.metric-card strong {
  display: block;
  margin-top: 0.4rem;
  font-size: 1.5rem;
  line-height: 1;
  color: rgb(15 23 42);
}

.helper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.helper-links a {
  text-decoration: none;
  color: rgb(79 70 229);
  font-weight: 600;
}

.section-divider {
  height: 1px;
  background: rgb(226 232 240);
  flex: 1 1 auto;
}

.preview-box {
  white-space: pre-wrap;
}

@media (max-width: 767px) {
  .app-shell {
    padding: 2rem 1rem;
  }
}