:root {
  --bg: #0e1116;
  --panel: #171b22;
  --panel-2: #1f242e;
  --border: #2d3340;
  --text: #f4f5f7;
  --muted: #9aa3b2;
  --accent: #6cb6ff;
  --accent-2: #3dd68c;
  --err: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1a2740 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.2rem 1.2rem 3rem;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.6rem;
}
.brand { font-weight: 700; letter-spacing: -0.03em; font-size: 1.15rem; }
.brand span { color: var(--accent); }
.muted { color: var(--muted); }
.nav { display: flex; gap: 0.7rem; align-items: center; }
.nav a, .nav form button {
  color: var(--muted);
  text-decoration: none;
  background: none;
  border: 0;
  font: inherit;
  cursor: pointer;
}
.nav a:hover, .nav form button:hover { color: var(--text); }

h1 { margin: 0 0 0.4rem; letter-spacing: -0.03em; font-size: 1.9rem; }
.lead { color: var(--muted); margin: 0 0 1.5rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.3rem;
}
.panel h2 { margin: 0 0 0.85rem; font-size: 1rem; color: var(--muted); font-weight: 600; }

label { display: block; font-size: 0.84rem; color: var(--muted); margin: 0.7rem 0 0.3rem; }
input[type="text"], input[type="password"] {
  width: 100%;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  font: inherit;
}
.alert {
  background: rgba(255, 107, 107, 0.12);
  border-left: 4px solid var(--err);
  padding: 0.7rem 0.85rem;
  border-radius: 8px;
  margin-bottom: 0.9rem;
}
.ok {
  background: rgba(61, 214, 140, 0.12);
  border-left-color: var(--accent-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
  border: 0;
  border-radius: 10px;
  padding: 0.65rem 1rem;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  background: var(--accent);
  color: #081018;
  text-decoration: none;
}
.btn.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.choice a {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.4rem 1.2rem;
  text-decoration: none;
  color: inherit;
  min-height: 150px;
  transition: border-color 0.15s, transform 0.15s;
}
.choice a:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.choice h2 { margin: 0 0 0.4rem; font-size: 1.35rem; }
.choice p { margin: 0; color: var(--muted); }

.section { margin-top: 1.6rem; }
.section h2 {
  margin: 0 0 0.75rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.tools { display: grid; gap: 0.75rem; }
.tool {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.05rem 1.1rem;
  text-decoration: none;
  color: inherit;
}
.tool:hover { border-color: var(--accent); }
.tool strong { display: block; margin-bottom: 0.25rem; }
.tool span { color: var(--muted); font-size: 0.9rem; }

@media (max-width: 720px) {
  .choice { grid-template-columns: 1fr; }
}