body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f4f7f6; display: flex; flex-direction: column; min-height: 100vh; margin: 0; }
.header { background-color: #003366; color: white; padding: 15px 30px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.header .logo { font-size: 24px; font-weight: 600; letter-spacing: 0.5px; display: flex; align-items: center; gap: 10px; }
.header .logo img { display: block; }
.header .support { font-size: 14px; opacity: 0.9; }
.container { flex: 1; display: flex; justify-content: center; align-items: center; padding: 20px; }
.login-box { background: white; padding: 40px; border-radius: 6px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); width: 100%; max-width: 380px; border-top: 4px solid #0055a5; }
.login-box h2 { text-align: center; color: #2c3e50; margin-top: 0; margin-bottom: 25px; font-weight: 500; font-size: 22px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; color: #555; font-size: 13px; font-weight: 600; }
.form-group input { width: 100%; padding: 12px; border: 1px solid #ccd0d5; border-radius: 4px; box-sizing: border-box; font-size: 14px; transition: border-color 0.2s; }
.form-group input:focus { border-color: #0055a5; outline: none; }
.btn { width: 100%; padding: 12px; background-color: #0055a5; color: white; border: none; border-radius: 4px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background-color 0.2s; }
.btn:hover { background-color: #003366; }
.btn:disabled { background-color: #99badd; cursor: not-allowed; }
.footer { background-color: #e9ecef; color: #666; text-align: center; padding: 20px; font-size: 12px; line-height: 1.5; }
.error { margin-top: 15px; text-align: center; padding: 10px; background: #fdf7f7; border-radius: 4px; border: 1px solid #f2dede; color: #d9534f; font-size: 13px; display: none; }
.notice { margin-top: 15px; text-align: center; padding: 10px; background: #fdf7f7; border-radius: 4px; border: 1px solid #f2dede; color: #d9534f; font-size: 13px; }
.page-title { text-align: center; color: #2c3e50; margin-top: 0; margin-bottom: 25px; font-weight: 500; font-size: 22px; }