* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  background: #0f172a;
  color: #e5e7eb;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: #020617;
  padding: 30px;
  width: 100%;
  max-width: 420px;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
  text-align: center;
}

.logo {
  font-size: 26px;
  font-weight: bold;
  letter-spacing: 2px;
  margin-bottom: 5px;
}

.tagline {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 20px;
}

h2 {
  margin-bottom: 15px;
}

input[type="file"],
input[type="password"] {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 6px;
  color: #e5e7eb;
}

input::placeholder {
  color: #64748b;
}

button {
  width: 100%;
  padding: 12px;
  margin-top: 15px;
  background: #2563eb;
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.hint {
  font-size: 12px;
  color: #94a3b8;
}

#status {
  margin-top: 12px;
  font-size: 13px;
}

.nav {
  margin-top: 20px;
  font-size: 13px;
}

.nav a {
  color: #60a5fa;
  text-decoration: none;
}

.nav a:hover {
  text-decoration: underline;
}

.pass-box {
  position: relative;
}

#togglePass {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 16px;
  color: #94a3b8;
}

#togglePass:hover {
  color: #e5e7eb;
}

.top-nav {
  position: center;
  top: 15px;
  right: 20px;
}

.top-nav a {
  color: #ffffff;
  text-decoration: none;
  margin-left: 15px;
  font-size: 13px;
  font-weight: 500;
}

.top-nav a:hover {
  text-decoration: underline;
}