* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Arial, sans-serif; background: linear-gradient(135deg, #232F3E 0%, #131921 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-container { background: white; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.3); width: 100%; max-width: 420px; overflow: hidden; }
.login-header { background: #131921; color: white; padding: 30px; text-align: center; }
.login-header h1 { font-size: 2em; margin-bottom: 5px; }
.login-header h1 span { color: #FF9900; }
.login-header p { color: #999; font-size: 0.9em; }
.login-body { padding: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: #333; font-size: 0.9em; }
.form-group input { width: 100%; padding: 14px; border: 2px solid #ddd; border-radius: 8px; font-size: 1em; transition: border-color 0.3s; }
.form-group input:focus { outline: none; border-color: #FF9900; }
.btn-login { width: 100%; padding: 14px; background: #FF9900; color: white; border: none; border-radius: 8px; font-size: 1.1em; font-weight: bold; cursor: pointer; transition: background 0.3s; }
.btn-login:hover { background: #E68A00; }
.btn-login:disabled { background: #ccc; cursor: not-allowed; }
.error-msg { background: #FFEBEE; color: #C62828; padding: 12px; border-radius: 8px; margin-bottom: 20px; font-size: 0.9em; display: none; }
.loading { text-align: center; padding: 20px; }
.loading.hidden { display: none; }
.spinner { width: 40px; height: 40px; border: 4px solid #f3f3f3; border-top: 4px solid #FF9900; border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 10px; }
@keyframes spin { to { transform: rotate(360deg); } }
.forgot-password { text-align: center; margin-top: 15px; }
.forgot-password a { color: #007185; font-size: 0.85em; text-decoration: none; }
.forgot-password a:hover { text-decoration: underline; }
.footer-note { text-align: center; padding: 15px; background: #f7f7f7; font-size: 0.8em; color: #666; }
.hidden { display: none !important; }