:root {
  --bg: #101418;
  --panel: #1c2127;
  --accent: #3498db;
  --error: #e74c3c;
  --text: #e0e0e0;
  --font: 'Segoe UI', sans-serif;
}
* {
  box-sizing: border-box;
  font-family: var(--font);
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  padding-top: 60px;
}
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: #1a1f26;
  border-bottom: 1px solid #2c2f35;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  z-index: 1000;
}
nav h1 {
  color: var(--accent);
  margin: 0;
  font-size: 1.3rem;
}
main.container {
  max-width: 400px;
  margin: 5rem auto;
  padding: 2rem;
  background: var(--panel);
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
h2 {
  text-align: center;
  margin-bottom: 2rem;
}
form input, form select {
  width: 100%;
  padding: 0.8rem;
  margin-bottom: 1.2rem;
  border: 1px solid #333;
  border-radius: 6px;
  background: #2a2f36;
  color: var(--text);
  font-size: 1rem;
}
button.save {
  width: 100%;
  padding: 0.8rem;
  background: var(--accent);
  color: white;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
}
button.save:hover {
  background: #2980b9;
}
.loginbtn {
  display: block;
  text-align: center;
  margin-top: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.loginbtn:hover {
  text-decoration: underline;
}
.error {
  text-align: center;
  color: var(--error);
  margin-top: 1rem;
  font-size: 0.95rem;
}