* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 500px;
}

.card {
  background: white;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

h1 {
  color: #333;
  font-size: 28px;
  margin-bottom: 30px;
}

.header h1 {
  margin-bottom: 0;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #555;
  font-weight: 500;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="file"] {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 6px;
  font-size: 14px;
  transition: border-color 0.3s;
}

input[type="email"]:focus,
input[type="password"]:focus,
input[type="text"]:focus,
input[type="file"]:focus {
  outline: none;
  border-color: #667eea;
}

small {
  display: block;
  margin-top: 5px;
  color: #888;
  font-size: 12px;
}

.btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn:active {
  transform: translateY(0);
}

.logout-btn {
  padding: 8px 16px;
  background: #f44336;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  transition: background 0.3s;
}

.logout-btn:hover {
  background: #d32f2f;
}

.error {
  background: #ffebee;
  color: #c62828;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 20px;
  border-left: 4px solid #c62828;
}

.success {
  background: #e8f5e9;
  color: #2e7d32;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 20px;
  border-left: 4px solid #2e7d32;
  line-height: 1.6;
}

.success a {
  color: #1565c0;
  text-decoration: none;
  word-break: break-all;
}

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