:root {
  --bg-main: #f3f8f7;
  --bg-gradient-a: #daf0ea;
  --bg-gradient-b: #fef7e8;
  --panel: #ffffff;
  --text: #132322;
  --muted: #4d6563;
  --accent: #0f766e;
  --border: #d5e3df;

  --group2-bg: #fff4bf;
  --group2-border: #d39a00;
  --group2-text: #5e4300;

  --group3-bg: #ffe0c7;
  --group3-border: #d24a00;
  --group3-text: #602004;

  --neutral-bg: #eef4f3;
  --neutral-border: #abc0bc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, var(--bg-gradient-a), transparent 45%),
    radial-gradient(circle at 85% 15%, var(--bg-gradient-b), transparent 50%),
    var(--bg-main);
}

.app-shell {
  width: min(760px, 92vw);
  margin: 3rem auto;
}

.hero h1,
.panel h2,
.result h3 {
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  letter-spacing: 0.01em;
}

.hero {
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 0.35rem 0 0.5rem;
  font-size: clamp(1.6rem, 2.5vw, 2.15rem);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 65ch;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.15rem;
  box-shadow: 0 10px 24px rgba(19, 35, 34, 0.08);
}

.panel h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.search-row {
  display: grid;
  gap: 0.7rem;
}

label {
  font-weight: 600;
}

input,
button {
  border-radius: 12px;
  border: 1px solid #a7c4be;
  font: inherit;
  min-height: 44px;
  padding: 0.65rem 0.8rem;
}

input:focus,
button:focus-visible {
  outline: 3px solid #84d2c7;
  outline-offset: 1px;
}

button {
  cursor: pointer;
  background: linear-gradient(135deg, #0f766e, #0b4f4a);
  color: #ffffff;
  border: none;
  font-weight: 600;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(15, 118, 110, 0.24);
}

.help-text {
  margin: 0.65rem 0 0;
  color: var(--muted);
}

.result {
  margin-top: 1rem;
  border-radius: 14px;
  border: 2px solid var(--neutral-border);
  background: var(--neutral-bg);
  padding: 1rem;
  animation: fade-in 280ms ease;
}

.result h3 {
  margin: 0 0 0.4rem;
}

.result p {
  margin: 0.35rem 0;
}

.result-group2 {
  background: var(--group2-bg);
  border-color: var(--group2-border);
  color: var(--group2-text);
}

.result-group3 {
  background: var(--group3-bg);
  border-color: var(--group3-border);
  color: var(--group3-text);
}

.result-neutral {
  background: var(--neutral-bg);
  border-color: var(--neutral-border);
}

.btn-secondary {
  margin-top: 0.8rem;
  background: linear-gradient(135deg, #667b76, #556e6a);
  font-size: 0.95rem;
}

.btn-secondary:hover {
  box-shadow: 0 6px 18px rgba(86, 110, 106, 0.24);
}

.table-panel {
  margin-top: 1.5rem;
}

.table-panel.hidden {
  display: none;
}

.table-controls {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1rem;
}

.table-controls label {
  white-space: nowrap;
}

.table-controls select {
  flex: 1;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid #a7c4be;
  padding: 0.65rem 0.8rem;
  font: inherit;
  cursor: pointer;
}

.table-controls select:focus-visible {
  outline: 3px solid #84d2c7;
  outline-offset: 1px;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(19, 35, 34, 0.08);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

thead {
  background: linear-gradient(135deg, #0f766e 0%, #0b4f4a 100%);
  color: white;
  font-weight: 600;
}

th {
  padding: 1rem 0.8rem;
  text-align: left;
  font-size: 0.95rem;
}

td {
  padding: 0.8rem;
  border-bottom: 1px solid #e5ebe8;
  font-size: 0.95rem;
}

tbody tr {
  transition: background 150ms ease;
}

tbody tr:hover {
  background: #f9fdfb;
}

tbody tr.group-2 {
  border-left: 4px solid var(--group2-border);
}

tbody tr.group-2:hover {
  background: #fffbf0;
}

tbody tr.group-3 {
  border-left: 4px solid var(--group3-border);
}

tbody tr.group-3:hover {
  background: #fff6f0;
}

.cell-nombre {
  font-weight: 600;
  color: var(--text);
}

.cell-grupo {
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.cell-mensaje {
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 250px;
}

.info-panel {
  margin-top: 2rem;
  background: linear-gradient(135deg, #f8fcfb 0%, #f3f8f7 100%);
}

.info-panel h2 {
  color: var(--accent);
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

.info-panel h3 {
  color: var(--accent);
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

.info-list {
  list-style: none;
  padding-left: 0;
  margin: 0.8rem 0;
}

.info-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.info-list li:last-child {
  border-bottom: none;
}

.info-panel a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 150ms ease;
}

.info-panel a:hover {
  color: #0b4f4a;
  text-decoration: underline;
}

.external-icon {
  font-size: 0.85em;
  margin-left: 0.2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.feature {
  background: white;
  padding: 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.feature:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.12);
}

.feature strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.github-link {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--border);
  text-align: center;
}

.github-link p {
  margin: 0;
  font-size: 1rem;
}

.noscript {
  width: min(760px, 92vw);
  margin: 0 auto 2rem;
  background: #fff3f3;
  border: 1px solid #cc3f3f;
  color: #6f1f1f;
  border-radius: 10px;
  padding: 0.8rem;
}

@media (max-width: 640px) {
  .app-shell {
    margin: 1.6rem auto;
  }

  .panel {
    padding: 1rem;
  }

  .table-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .table-controls label {
    margin-bottom: 0.3rem;
  }

  .cell-mensaje {
    max-width: 150px;
    font-size: 0.85rem;
  }

  th,
  td {
    padding: 0.7rem 0.5rem;
    font-size: 0.9rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }
}

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