:root {
  --bg: #343541;
  --card: #202123;
  --accent: #19c37d;
  --accent-hover: #17b36d;
  --muted: #6b6b6b;
  --text: #ffffff;
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
}

body, html {
  height: 100%;
  width: 100%;
  background: var(--bg);
  color: var(--text);
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.card {
  background: var(--card);
  padding: 40px 30px;
  border-radius: 16px;
  width: 350px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
}

.card h2 {
  text-align: center;
  margin-bottom: 8px;
}

.card .sub {
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

label {
  font-size: 14px;
  margin-bottom: 4px;
}

input {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid #444654;
  background: #2a2a37;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s ease;
}

input::placeholder {
  color: var(--muted);
}

input:focus {
  outline: none;
  border-color: var(--accent);
  background: #3a3a4a;
}

.btn {
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s ease;
}

.btn:hover {
  background: var(--accent-hover);
}

.login-link {
  text-align: center;
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
}

.login-link a {
  color: var(--accent);
  text-decoration: none;
}

.login-link a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 400px) {
  .card {
    width: 90%;
    padding: 30px 20px;
  }
}