* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, sans-serif;
            background: linear-gradient(135deg, #0a1128 0%, #1a2332 50%, #0a1128 100%);
            background-attachment: fixed;
            color: #e0e6ed;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            animation: bgShift 20s ease infinite;
            background-size: 200% 200%;
        }
        @keyframes bgShift {
            0%   { background-position: 0% 50%; }
            50%  { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        .login-card {
            background: linear-gradient(145deg, rgba(20, 30, 55, 0.95), rgba(10, 15, 30, 0.95));
            border: 3px solid #d4a017;
            border-radius: 16px;
            padding: 40px 36px;
            max-width: 440px;
            width: 100%;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
            position: relative;
        }
        .login-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 4px;
            background: linear-gradient(90deg, #d4a017, #ffd700, #d4a017);
            border-radius: 16px 16px 0 0;
        }
        .login-emblem {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            display: block;
            filter: drop-shadow(0 0 10px rgba(212, 160, 23, 0.6));
            object-fit: contain;
        }
        .login-card h1 {
            color: #ffffff;
            font-size: 22px;
            text-align: center;
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 6px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
        }
        .login-card .subtitle {
            color: #d4a017;
            font-size: 11px;
            text-align: center;
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 30px;
        }
        .error-box {
            background: rgba(248, 113, 113, 0.15);
            border: 1px solid #f87171;
            color: #fca5a5;
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 13px;
            text-align: center;
        }
        .form-group { margin-bottom: 20px; }
        .form-group label {
            display: block;
            color: #8fa5c4;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .form-group input {
            width: 100%;
            padding: 12px 14px;
            background: rgba(10, 20, 40, 0.7);
            border: 1px solid rgba(80, 130, 255, 0.3);
            border-radius: 8px;
            color: #ffffff;
            font-size: 15px;
            transition: all 0.2s;
        }
        .form-group input:focus {
            outline: none;
            border-color: #d4a017;
            box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.15);
        }
        .btn-login {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #8b0000 0%, #5c0000 100%);
            border: 2px solid #d4a017;
            border-radius: 8px;
            color: #ffffff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.25s;
            margin-top: 8px;
        }
        .btn-login:hover {
            box-shadow: 0 8px 25px rgba(212, 160, 23, 0.4);
            transform: translateY(-2px);
        }
        .login-footer {
            text-align: center;
            color: #5a6b82;
            font-size: 11px;
            letter-spacing: 2px;
            margin-top: 25px;
        }