:root {
  --bg: #0f1220;
  --surface: #171b2e;
  --accent: #6c5ce7;
  --accent-2: #00d1b2;
  --text: #e8e8f0;
  --muted: #9a9ec2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.navbar {
  background: var(--surface);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.brand span { color: var(--accent-2); }

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
}

nav a:hover { color: var(--text); }

.welcome { color: var(--muted); margin-right: 0.5rem; }

.hero {
  text-align: center;
  padding: 5rem 1.5rem 3rem;
  background: radial-gradient(circle at 50% 0%, rgba(108,92,231,0.25), transparent 60%);
}

.hero h1 {
  font-size: 3rem;
  margin: 0;
  letter-spacing: 0.05em;
}

.hero .subtitle {
  color: var(--muted);
  font-size: 1.2rem;
  margin-top: 0.5rem;
}

.hero .details {
  margin-top: 1rem;
  color: var(--text);
}

.cta {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
}

.cta:hover { background: #5a48d8; }

.info {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 1.5rem;
}

.card h2 { margin-top: 0; color: var(--accent-2); }
.card code {
  background: rgba(255,255,255,0.08);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.login-section {
  display: flex;
  justify-content: center;
  padding: 4rem 1.5rem;
}

.login-form {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 2rem;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
}

.login-form h2 { margin-top: 0; text-align: center; }

.login-form label {
  margin-top: 1rem;
  margin-bottom: 0.3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.login-form input {
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.15);
  background: #10131f;
  color: var(--text);
}

.login-form button {
  margin-top: 1.5rem;
  padding: 0.7rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-weight: 600;
  cursor: pointer;
}

.login-form button:hover { background: #5a48d8; }

.login-form .error {
  background: rgba(255, 99, 99, 0.15);
  color: #ff8080;
  padding: 0.6rem;
  border-radius: 6px;
  text-align: center;
}

.login-form .hint {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}