:root {
  --bg: #0f1724;
  --card: #182235;
  --accent: #00bcd4;
  --muted: #9aa4b2;
  --white: #e6eef6;
  --radius: 8px;
  --transition: 0.2s ease;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--white);
}

.container {
  max-width: 1000px;
  margin: 40px auto;
  padding: 32px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

h1, h2, h3 {
  color: var(--white);
  margin-top: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  color: var(--muted);
}

input, textarea, select {
  background: #101a2a;
  border: 1px solid #22304a;
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--white);
  font-size: 1rem;
  transition: border var(--transition), background var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  background: #16243b;
}

button {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
button:hover {
  background: #00acc1;
  transform: translateY(-1px);
}

hr {
  border: none;
  border-top: 1px solid #22304a;
  margin: 2rem 0;
}

ul {
  list-style: none;
  padding: 0;
}
ul li {
  background: #101a2a;
  margin-bottom: 6px;
  padding: 10px 12px;
  border-radius: var(--radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.notice {
  background: rgba(0, 188, 212, 0.15);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 8px 12px;
  border-radius: var(--radius);
}
.error {
  background: rgba(255, 0, 0, 0.15);
  color: #ff8080;
  border: 1px solid #ff4d4d;
  padding: 8px 12px;
  border-radius: var(--radius);
}