:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #22d3ee;
  --border: rgba(148, 163, 184, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.15), transparent 35%),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: var(--text);
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header,
.site-footer {
  padding: 2rem 0;
}

.site-header {
  text-align: center;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 3vw, 3rem);
}

.site-header p {
  margin: 0;
  color: var(--muted);
}

.nav-menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.nav-menu a {
  display: inline-block;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
}

.nav-menu a.active,
.nav-menu a:hover {
  transform: translateY(-1px);
  background: rgba(56, 189, 248, 0.16);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  display: block;
  padding: 1.5rem;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.35);
}

.card h3 {
  margin: 0 0 0.5rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.tool-form {
  display: grid;
  gap: 1rem;
}

.tool-form label,
fieldset {
  display: grid;
  gap: 0.65rem;
}

label {
  color: var(--muted);
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.95);
  color: var(--text);
  padding: 0.85rem 1rem;
  font-size: 1rem;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button.btn {
  width: fit-content;
  align-self: start;
  padding: 0.95rem 1.5rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #06283d;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

button.btn:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.result-box {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.14);
}

.result-box table {
  width: 100%;
  border-collapse: collapse;
}

.result-box th,
.result-box td {
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  text-align: left;
}

.result-box th {
  color: #cbd5e1;
}

.row,
.grid-2 {
  display: grid;
  gap: 1rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.team-filter {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.team-filter label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted);
}

.team-filter select {
  max-width: 320px;
}

.team-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.team-panel h3 {
  margin-top: 0;
  margin-bottom: 0.85rem;
}

fieldset {
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 16px;
  padding: 1rem;
}

legend {
  padding: 0 0.5rem;
  font-weight: 700;
}

.site-footer {
  color: var(--muted);
  text-align: center;
}

@media (max-width: 640px) {
  .nav-menu {
    flex-direction: column;
  }
}