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

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea, #764ba2);
  padding: 20px;
}

.login-container {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  max-width: 420px;
  width: 100%;
  overflow: hidden;
}

.login-header {
  background: linear-gradient(135deg, #ff6b35, #f7c948);
  padding: 40px 30px;
  text-align: center;
  color: #fff;
}

.login-header .logo { font-size: 60px; }
.login-header h1 { font-size: 1.5rem; margin-top: 10px; }
.login-header p { font-size: 0.9rem; opacity: 0.9; margin-top: 5px; }

.login-form { padding: 30px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; color: #333; margin-bottom: 6px; font-size: 0.9rem; }
.form-group input {
  width: 100%; padding: 12px 16px;
  border: 2px solid #e0e0e0; border-radius: 10px;
  font-size: 1rem; outline: none;
}
.form-group input:focus { border-color: #ff6b35; }

.btn-login {
  width: 100%; padding: 14px;
  background: linear-gradient(135deg, #ff6b35, #e85d26);
  color: #fff; border: none; border-radius: 10px;
  font-size: 1.1rem; font-weight: 700; cursor: pointer;
}
.btn-login:hover { box-shadow: 0 8px 25px rgba(255,107,53,0.4); }
.btn-login:disabled { opacity: 0.6; cursor: not-allowed; }

.error-msg {
  background: #ffe0e0; color: #c0392b;
  padding: 10px 16px; border-radius: 8px;
  margin-bottom: 15px; font-size: 0.85rem;
  display: none;
}

.login-footer { text-align: center; padding: 0 30px 25px; font-size: 0.8rem; color: #999; }
.login-footer a { color: #ff6b35; text-decoration: none; }

.spinner {
  display: inline-block; width: 18px; height: 18px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }