body {
  background: DarkSlateBlue !important;
}
:root {
  --bg1: #667eea;
  --bg2: #764ba2;
  --card: rgba(255, 255, 255, 0.92);
  --text: #172033;
  --muted: #64748b;
  --blue: #2563eb;
  --cyan: #e0f7fa;
  --violet: #ede9fe;
  --orange: #fff1dd;
  --green: #dcfce7;
  --border: rgba(148, 163, 184, 0.35);
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.25);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.35), transparent 35%),
    linear-gradient(135deg, var(--bg1), var(--bg2));
}

.app {
  width: min(1180px, 94%);
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero {
  text-align: center;
  color: white;
  margin-bottom: 28px;
}

.main-title {
  width: 100%;
  border: 0;
  background: transparent;
  color: white;
  text-align: center;
  font-size: clamp(2.3rem, 6vw, 4.8rem);
  font-weight: 900;
  letter-spacing: -0.06em;
  outline: none;
}

.hero p {
  margin: 8px 0 0;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.86);
}

.comparison-card,
.similarities-card {
  background: var(--card);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.55);
  border-radius: 32px;
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 26px;
}

.comparison-card::before {
  content: "Diferencias";
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #dbeafe;
  color: #1d4ed8;
  font-weight: 900;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.comparison-header,
.comparison-row {
  display: grid;
  grid-template-columns: 1fr 0.72fr 1fr 48px;
  gap: 14px;
}

.comparison-header {
  margin-bottom: 14px;
}

.comparison-header input,
.comparison-header div {
  min-height: 70px;
  border: 0;
  border-radius: 24px;
  padding: 16px;
  text-align: center;
  font-weight: 900;
  font-size: 1.15rem;
  outline: none;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.6);
}

.comparison-header input:first-child {
  background: linear-gradient(135deg, #cffafe, #ecfeff);
  color: #155e75;
}

.comparison-header div {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #ddd6fe, #f5f3ff);
  color: #5b21b6;
}

.comparison-header input:last-child {
  background: linear-gradient(135deg, #fed7aa, #fff7ed);
  color: #9a3412;
}

.comparison-row {
  margin-bottom: 14px;
}

textarea,
input {
  font: inherit;
}

.comparison-row textarea,
.similarity-item textarea {
  width: 100%;
  border: 2px solid transparent;
  border-radius: 24px;
  padding: 16px;
  resize: vertical;
  outline: none;
  line-height: 1.45;
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.comparison-row textarea {
  min-height: 120px;
}

textarea:focus,
input:focus {
  border-color: rgba(37, 99, 235, 0.65);
  box-shadow:
    inset 0 0 0 1px rgba(37, 99, 235, 0.4),
    0 0 0 5px rgba(37, 99, 235, 0.13);
}

.left-field {
  background: linear-gradient(180deg, #ecfeff, #cffafe);
}

.middle-field {
  background: linear-gradient(180deg, #f5f3ff, #ede9fe);
  text-align: center;
  font-weight: 800;
}

.right-field {
  background: linear-gradient(180deg, #fff7ed, #ffedd5);
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 13px 20px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.primary {
  margin-top: 8px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.32);
}

.primary:hover {
  box-shadow: 0 16px 34px rgba(37, 99, 235, 0.42);
}

.delete-row,
.delete-similarity {
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 18px;
  background: rgba(255,255,255,0.8);
  color: #64748b;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 900;
  box-shadow: inset 0 0 0 1px var(--border);
  transition: 0.15s ease;
}

.delete-row:hover,
.delete-similarity:hover {
  background: #fee2e2;
  color: #dc2626;
  transform: scale(1.04);
}

.similarities-card {
  background:
    linear-gradient(135deg, rgba(240,253,244,0.95), rgba(255,255,255,0.92));
}

.similarities-card h2 {
  margin: 0 0 14px;
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.similarities-card h2::before {
  content: "≈ ";
  color: #16a34a;
}

.similarity-item {
  display: grid;
  grid-template-columns: 1fr 48px;
  gap: 14px;
  margin-bottom: 14px;
}

.similarity-item textarea {
  min-height: 82px;
  background: linear-gradient(180deg, #f0fdf4, #dcfce7);
}

.actions {
  text-align: center;
}

.danger {
  background: rgba(255,255,255,0.88);
  color: #dc2626;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.16);
}

.danger:hover {
  background: #fee2e2;
}

@media (max-width: 850px) {
  .app {
    width: min(96%, 680px);
    padding-top: 26px;
  }

  .comparison-card,
  .similarities-card {
    border-radius: 24px;
    padding: 18px;
  }

  .comparison-header,
  .comparison-row {
    grid-template-columns: 1fr;
  }

  .comparison-header div {
    order: -1;
  }

  .delete-row,
  .delete-similarity {
    width: 100%;
    border-radius: 16px;
  }

  .main-title {
    font-size: 2.4rem;
  }
}